Merge branch 'feature/exchangeable-annotations' into develop

CHANGELOG.md

@@ -16,8 +16,10 @@
 
 ### BREAKING CHANGES
 
-- On Android, the `InAppWebView` widget uses hybrid composition by default (`useHybridComposition: true`).
-- All properties of `GeolocationPermissionShowPromptResponse` cannot be `null`;
+- On Android, the `InAppWebView` widget uses hybrid composition by default (`useHybridComposition: true`)
+- All properties of `GeolocationPermissionShowPromptResponse` cannot be `null`
+- Removed `URLProtectionSpace.iosIsProxy` property
+- `historyUrl` and `baseUrl` of `InAppWebViewInitialData` can be `null`
 
 ## 5.4.4+3
 
@@ -92,7 +94,7 @@
 
 ## 5.4.1
 
-- Managed iOS native `detachFromEngine` flutter plugin event and updated `dispose` methods
+- Managed iOS native `detachFromEngine` flutter plugin event and updated `dispose` methods
 - Updated Android native `HeadlessInAppWebViewManager.dispose` and `HeadlessInAppWebView.dispose` methods
 
 ## 5.4.0+3
@@ -347,7 +349,7 @@
 - Renamed `toolbarTop` InAppBrowser cross-platform option to `hideToolbarTop`
 - Renamed `toolbarBottom` InAppBrowser ios-specific option to `hideToolbarBottom`
 - Removed `debuggingEnabled` WebView option; on Android you should use now the `AndroidInAppWebViewController.setWebContentsDebuggingEnabled(bool debuggingEnabled)` static method; on iOS, debugging is always enabled
-- Removed `androidOnRequestFocus` event because it is never called
+- Removed `androidOnRequestFocus` event because it is never called
 - Removed `initialHeaders` WebView attribute. Use `URLRequest.headers` attribute
 - Removed `headers` argument from `loadFile` WebView method
 - Removed `headers` argument from `openFile` InAppBrowser method
@@ -363,11 +365,11 @@
 - Changed return type of `getOriginalUrl` Android-specific WebView method to `Uri`
 - Changed return type of `getSafeBrowsingPrivacyPolicyUrl` Android-specific WebView method to `Uri`
 - Changed type of `url` argument of `onLoadStart`, `onLoadStop`, `onLoadError`, `onLoadHttpError`, `onLoadResourceCustomScheme`, `onUpdateVisitedHistory`, `onPrint`, `onPageCommitVisible`, `androidOnSafeBrowsingHit`, `androidOnRenderProcessUnresponsive`, `androidOnRenderProcessResponsive`, `androidOnFormResubmission`, `androidOnReceivedTouchIconUrl` WebView events to `Uri`
-- Changed type of `baseUrl` and `androidHistoryUrl` arguments of `loadData` WebView method and `openData` InAppBrowser method
+- Changed type of `baseUrl` and `androidHistoryUrl` arguments of `loadData` WebView method and `openData` InAppBrowser method
 - Changed `openUrl` InAppBrowser method to `openUrlRequest`
 - Changed type of `url` argument of `openWithSystemBrowser` InAppBrowser method to `Uri`
-- Changed all InAppBrowser color options type from `String` to `Color`
-- Changed all ChromeSafariBrowser color options type from `String` to `Color`
+- Changed all InAppBrowser color options type from `String` to `Color`
+- Changed all ChromeSafariBrowser color options type from `String` to `Color`
 - Updated attributes of `ShouldOverrideUrlLoadingRequest`, `ServerTrustChallenge` and `ClientCertChallenge` classes
 - Changed type of `url` attribute to `Uri` for `JsAlertRequest`, `JsAlertConfirm`, `JsPromptRequest` classes
 

analysis_options.yaml

@@ -1,4 +1,11 @@
-include: package:flutter_lints/flutter.yaml
+include: package:lints/recommended.yaml
+
+linter:
+  rules:
+    constant_identifier_names: ignore
 
 # Additional information about this file can be found at
 # https://dart.dev/guides/language/analysis-options
+analyzer:
+  errors:
+    deprecated_member_use_from_same_package: ignore

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/plugin_scripts_js/InterceptAjaxRequestJS.java

@@ -197,7 +197,7 @@ public class InterceptAjaxRequestJS {
           "        };" +
           "        window." + JavaScriptBridgeJS.JAVASCRIPT_BRIDGE_NAME + ".callHandler('shouldInterceptAjaxRequest', ajaxRequest).then(function(result) {" +
           "          if (result != null) {" +
-          "            switch (result.action) {" +
+          "            switch (result) {" +
           "              case 0:" +
           "                self.abort();" +
           "                return;" +

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/types/WebResourceErrorExt.java

@@ -10,12 +10,12 @@ import java.util.HashMap;
 import java.util.Map;
 
 public class WebResourceErrorExt {
-  private int errorCode;
+  private int type;
   @NonNull
   private String description;
 
-  public WebResourceErrorExt(int errorCode, @NonNull String description) {
-    this.errorCode = errorCode;
+  public WebResourceErrorExt(int type, @NonNull String description) {
+    this.type = type;
     this.description = description;
   }
 
@@ -26,17 +26,17 @@ public class WebResourceErrorExt {
 
   public Map<String, Object> toMap() {
     Map<String, Object> webResourceErrorMap = new HashMap<>();
-    webResourceErrorMap.put("errorCode", getErrorCode());
+    webResourceErrorMap.put("type", getType());
     webResourceErrorMap.put("description", getDescription());
     return webResourceErrorMap;
   }
 
-  public int getErrorCode() {
-    return errorCode;
+  public int getType() {
+    return type;
   }
 
-  public void setErrorCode(int errorCode) {
-    this.errorCode = errorCode;
+  public void setType(int type) {
+    this.type = type;
   }
 
   @NonNull
@@ -55,13 +55,13 @@ public class WebResourceErrorExt {
 
     WebResourceErrorExt that = (WebResourceErrorExt) o;
 
-    if (errorCode != that.errorCode) return false;
+    if (type != that.type) return false;
     return description.equals(that.description);
   }
 
   @Override
   public int hashCode() {
-    int result = errorCode;
+    int result = type;
     result = 31 * result + description.hashCode();
     return result;
   }
@@ -69,7 +69,7 @@ public class WebResourceErrorExt {
   @Override
   public String toString() {
     return "WebResourceErrorExt{" +
-            "errorCode=" + errorCode +
+            "type=" + type +
             ", description='" + description + '\'' +
             '}';
   }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/WebViewChannelDelegate.java

@@ -925,8 +925,7 @@ public class WebViewChannelDelegate extends ChannelDelegateImpl {
     @Nullable
     @Override
     public NavigationActionPolicy decodeResult(@Nullable Object obj) {
-      Integer action = Util.<Integer>getOrDefault((Map<String, Object>) obj, 
-              "action", NavigationActionPolicy.CANCEL.rawValue());
+      Integer action = obj instanceof Integer ? (Integer) obj : NavigationActionPolicy.CANCEL.rawValue();
       return NavigationActionPolicy.fromValue(action);
     }
   }
@@ -1067,7 +1066,7 @@ public class WebViewChannelDelegate extends ChannelDelegateImpl {
     @Nullable
     @Override
     public Integer decodeResult(@Nullable Object obj) {
-      return obj != null ? (Integer) ((Map<String, Object>) obj).get("action") : null;
+      return obj instanceof Integer ? (Integer) obj : null;
     }
   }
 
@@ -1183,7 +1182,7 @@ public class WebViewChannelDelegate extends ChannelDelegateImpl {
     @Nullable
     @Override
     public Integer decodeResult(@Nullable Object obj) {
-      return obj != null ? (Integer) ((Map<String, Object>) obj).get("action") : null;
+      return obj instanceof Integer ? (Integer) obj : null;
     }
   }
 
@@ -1202,7 +1201,7 @@ public class WebViewChannelDelegate extends ChannelDelegateImpl {
     @Nullable
     @Override
     public Integer decodeResult(@Nullable Object obj) {
-      return obj != null ? (Integer) ((Map<String, Object>) obj).get("action") : null;
+      return obj instanceof Integer ? (Integer) obj : null;
     }
   }
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/InAppWebView.java

@@ -1201,7 +1201,7 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
 
     HashMap<String, Object> result = new HashMap<>();
 
-    result.put("history", history);
+    result.put("list", history);
     result.put("currentIndex", currentIndex);
 
     return result;

dev_packages/flutter_inappwebview_internal_annotations/lib/flutter_inappwebview_internal_annotations.dart

@@ -0,0 +1,10 @@
+library flutter_inappwebview_internal_annotations;
+
+export 'src/exchangeable_object.dart';
+export 'src/exchangeable_object_constructor.dart';
+export 'src/exchangeable_object_property.dart';
+export 'src/exchangeable_object_method.dart';
+export 'src/exchangeable_enum.dart';
+export 'src/exchangeable_enum_custom_value.dart';
+export 'src/supported_platforms.dart';
+export 'src/enum_supported_platforms.dart';

dev_packages/flutter_inappwebview_internal_annotations/lib/src/enum_supported_platforms.dart

@@ -0,0 +1,115 @@
+import 'supported_platforms.dart';
+
+abstract class EnumPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "";
+  final targetPlatformName = "";
+}
+
+class EnumAndroidPlatform implements EnumPlatform, AndroidPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumAndroidPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "Android native WebView";
+  final targetPlatformName = "android";
+}
+
+class EnumIOSPlatform implements EnumPlatform, IOSPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumIOSPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "iOS";
+  final targetPlatformName = "iOS";
+}
+
+class EnumMacOSPlatform implements EnumPlatform, MacOSPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumMacOSPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "MacOS";
+  final targetPlatformName = "macOS";
+}
+
+class EnumWindowsPlatform implements EnumPlatform, WindowsPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumWindowsPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "Windows";
+  final targetPlatformName = "windows";
+}
+
+class EnumLinuxPlatform implements EnumPlatform, LinuxPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+
+  const EnumLinuxPlatform(
+      {this.available, this.apiName, this.apiUrl, this.note, this.value});
+
+  final name = "Linux";
+  final targetPlatformName = "linux";
+}
+
+class EnumWebPlatform implements EnumPlatform, WebPlatform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final dynamic value;
+  final bool requiresSameOrigin;
+
+  const EnumWebPlatform(
+      {this.available,
+        this.apiName,
+        this.apiUrl,
+        this.note,
+        this.value,
+        this.requiresSameOrigin = true});
+
+  final name = "Web";
+  final targetPlatformName = "web";
+}
+
+class EnumSupportedPlatforms {
+  final List<EnumPlatform> platforms;
+  final dynamic defaultValue;
+
+  const EnumSupportedPlatforms({
+    required this.platforms,
+    this.defaultValue,
+  });
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_enum.dart

@@ -0,0 +1,23 @@
+class ExchangeableEnum {
+  final bool valuesProperty;
+  final bool toValueMethod;
+  final bool fromValueMethod;
+  final bool toNativeValueMethod;
+  final bool fromNativeValueMethod;
+  final bool toStringMethod;
+  final bool hashCodeMethod;
+  final bool equalsOperator;
+  final bool bitwiseOrOperator;
+
+  const ExchangeableEnum({
+    this.valuesProperty = true,
+    this.toValueMethod = true,
+    this.fromValueMethod = true,
+    this.toNativeValueMethod = true,
+    this.fromNativeValueMethod = true,
+    this.toStringMethod = true,
+    this.hashCodeMethod = true,
+    this.equalsOperator = true,
+    this.bitwiseOrOperator = false
+  });
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_enum_custom_value.dart

@@ -0,0 +1,3 @@
+class ExchangeableEnumCustomValue {
+  const ExchangeableEnumCustomValue();
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_object.dart

@@ -0,0 +1,15 @@
+class ExchangeableObject {
+  final bool toMapMethod;
+  final bool toJsonMethod;
+  final bool fromMapFactory;
+  final bool nullableFromMapFactory;
+  final bool toStringMethod;
+
+  const ExchangeableObject({
+    this.toMapMethod = true,
+    this.toJsonMethod = true,
+    this.fromMapFactory = true,
+    this.nullableFromMapFactory = true,
+    this.toStringMethod = true,
+  });
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_object_constructor.dart

@@ -0,0 +1,3 @@
+class ExchangeableObjectConstructor {
+  const ExchangeableObjectConstructor();
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_object_method.dart

@@ -0,0 +1,9 @@
+class ExchangeableObjectMethod {
+  final bool ignore;
+  final bool toMapMergeWith;
+
+  const ExchangeableObjectMethod({
+    this.ignore = false,
+    this.toMapMergeWith = false
+  });
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/exchangeable_object_property.dart

@@ -0,0 +1,9 @@
+class ExchangeableObjectProperty {
+  final Function? serializer;
+  final Function? deserializer;
+
+  const ExchangeableObjectProperty({
+    this.serializer,
+    this.deserializer
+  });
+}

dev_packages/flutter_inappwebview_internal_annotations/lib/src/supported_platforms.dart

@@ -0,0 +1,95 @@
+abstract class Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const Platform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "";
+  final targetPlatformName = "";
+}
+
+class AndroidPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const AndroidPlatform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "Android native WebView";
+  final targetPlatformName = "android";
+}
+
+class IOSPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const IOSPlatform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "iOS";
+  final targetPlatformName = "iOS";
+}
+
+class MacOSPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const MacOSPlatform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "MacOS";
+  final targetPlatformName = "macOS";
+}
+
+class WindowsPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const WindowsPlatform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "Windows";
+  final targetPlatformName = "windows";
+}
+
+class LinuxPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+
+  const LinuxPlatform({this.available, this.apiName, this.apiUrl, this.note});
+
+  final name = "Linux";
+  final targetPlatformName = "linux";
+}
+
+class WebPlatform implements Platform {
+  final String? available;
+  final String? apiName;
+  final String? apiUrl;
+  final String? note;
+  final bool requiresSameOrigin;
+
+  const WebPlatform(
+      {this.available,
+      this.apiName,
+      this.apiUrl,
+      this.note,
+      this.requiresSameOrigin = true});
+
+  final name = "Web";
+  final targetPlatformName = "web";
+}
+
+class SupportedPlatforms {
+  final List<Platform> platforms;
+
+  const SupportedPlatforms({required this.platforms});
+}

dev_packages/flutter_inappwebview_internal_annotations/pubspec.lock

@@ -0,0 +1,320 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "49.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.3.1"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.9.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.4"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.1"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.4"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.12"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.7.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.1"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.0"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.10.10"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.9.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.21.6"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.14"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.18"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.4.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.1"
+sdks:
+  dart: ">=2.18.0 <3.0.0"

dev_packages/flutter_inappwebview_internal_annotations/pubspec.yaml

@@ -0,0 +1,10 @@
+name: flutter_inappwebview_internal_annotations
+description: A Flutter plugin that allows you to add an inline webview, to use an headless webview, and to open an in-app browser window.
+version: 1.0.0
+homepage: https://github.com/pichillilorenzo/flutter_inappwebview
+
+environment:
+  sdk: ">=2.14.0 <3.0.0"
+
+dev_dependencies:
+  test: ^1.21.6

dev_packages/generators/build.yaml

@@ -0,0 +1,21 @@
+targets:
+  $default:
+    builders:
+      generators|flutter_inappwebview_internal_annotations:
+        enabled: true
+
+builders:
+  generators:
+    target: ":generators"
+    # 1
+    import: "package:generators/builder.dart"
+    # 2
+    builder_factories: ["generateExchangeableObject", "generateExchangeableEnum"]
+    # 3
+    build_extensions: { ".dart": [".g.dart"] }
+    auto_apply: dependents
+    build_to: cache
+    applies_builders: ["source_gen|combining_builder"]
+    defaults:
+      generate_for:
+        - lib/src/**.dart

dev_packages/generators/lib/builder.dart

@@ -0,0 +1,10 @@
+import 'package:build/build.dart';
+import 'package:source_gen/source_gen.dart';
+import 'src/exchangeable_object_generator.dart';
+import 'src/exchangeable_enum_generator.dart';
+
+Builder generateExchangeableObject(BuilderOptions options) =>
+    SharedPartBuilder([ExchangeableObjectGenerator()], 'exchangeable_object');
+
+Builder generateExchangeableEnum(BuilderOptions options) =>
+    SharedPartBuilder([ExchangeableEnumGenerator()], 'exchangeable_enum');

dev_packages/generators/lib/generators.dart

@@ -0,0 +1 @@
+library generators;

dev_packages/generators/lib/src/exchangeable_enum_generator.dart

@@ -0,0 +1,317 @@
+import 'package:build/src/builder/build_step.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:source_gen/source_gen.dart';
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+import 'package:analyzer/dart/constant/value.dart';
+
+import 'model_visitor.dart';
+import 'util.dart';
+
+final _coreCheckerEnumSupportedPlatforms =
+    const TypeChecker.fromRuntime(EnumSupportedPlatforms);
+final _coreCheckerDeprecated = const TypeChecker.fromRuntime(Deprecated);
+final _coreCheckerEnumCustomValue =
+    const TypeChecker.fromRuntime(ExchangeableEnumCustomValue);
+
+class ExchangeableEnumGenerator
+    extends GeneratorForAnnotation<ExchangeableEnum> {
+  @override
+  String generateForAnnotatedElement(
+      Element element, ConstantReader annotation, BuildStep buildStep) {
+    final visitor = ModelVisitor();
+    // Visits all the children of element in no particular order.
+    element.visitChildren(visitor);
+
+    final className = visitor.constructor.returnType.element2.name;
+    // remove "_" to generate the correct class name
+    final extClassName = className.replaceFirst("_", "");
+
+    final classBuffer = StringBuffer();
+    final classDocs =
+        visitor.constructor.returnType.element2.documentationComment;
+    if (classDocs != null) {
+      classBuffer.writeln(classDocs);
+    }
+    final classSupportedDocs = Util.getSupportedDocs(
+        _coreCheckerEnumSupportedPlatforms,
+        visitor.constructor.returnType.element2);
+    if (classSupportedDocs != null) {
+      classBuffer.writeln(classSupportedDocs);
+    }
+    if (visitor.constructor.returnType.element2.hasDeprecated) {
+      classBuffer.writeln(
+          "@Deprecated('${_coreCheckerDeprecated.firstAnnotationOfExact(visitor.constructor.returnType.element2)?.getField("message")?.toStringValue()}')");
+    }
+    classBuffer.writeln('class $extClassName {');
+
+    final FieldElement enumValue = visitor.fields.entries
+        .firstWhere((element) => element.key == "_value")
+        .value;
+    final FieldElement enumNativeValue = visitor.fields.entries
+        .firstWhere((element) => element.key == "_nativeValue",
+            orElse: () => MapEntry("_nativeValue", enumValue))
+        .value;
+
+    classBuffer.writeln("final ${enumValue.type} _value;");
+    classBuffer.writeln("final ${enumNativeValue.type} _nativeValue;");
+
+    classBuffer.writeln(
+        "const $extClassName._internal(this._value, this._nativeValue);");
+    classBuffer.writeln("// ignore: unused_element");
+    classBuffer.writeln(
+        "factory $extClassName._internalMultiPlatform(${enumValue.type} value, Function nativeValue) => $extClassName._internal(value, nativeValue());");
+
+    for (final entry in visitor.fields.entries) {
+      final fieldName = entry.key;
+      final fieldElement = entry.value;
+      if (fieldName == "_value" || fieldName == "_nativeValue") {
+        continue;
+      }
+      final isEnumCustomValue = _coreCheckerEnumCustomValue
+          .firstAnnotationOf(fieldElement) != null;
+      if (isEnumCustomValue) {
+        ParsedLibraryResult parsed = fieldElement.session
+            ?.getParsedLibraryByElement(fieldElement.library)
+            as ParsedLibraryResult;
+        final fieldBody = parsed
+            .getElementDeclaration(fieldElement)
+            ?.node
+            .toString()
+            .replaceAll(className, extClassName);
+        if (fieldBody != null) {
+          final docs = fieldElement.documentationComment;
+          if (docs != null) {
+            classBuffer.writeln(docs);
+          }
+          if (fieldElement.isStatic) {
+            classBuffer.write("static ");
+          }
+          if (fieldElement.isLate) {
+            classBuffer.write("late ");
+          }
+          if (fieldElement.isFinal) {
+            classBuffer.write("final ");
+          }
+          if (fieldElement.isConst) {
+            classBuffer.write("const ");
+          }
+          classBuffer.writeln("$fieldBody;");
+        }
+        continue;
+      }
+      final docs = fieldElement.documentationComment;
+      if (docs != null) {
+        classBuffer.writeln(docs);
+      }
+      final fieldSupportedDocs = Util.getSupportedDocs(
+          _coreCheckerEnumSupportedPlatforms, fieldElement);
+      if (fieldSupportedDocs != null) {
+        classBuffer.writeln(fieldSupportedDocs);
+      }
+      if (fieldName == '_value' || fieldName == '_nativeValue') {
+        classBuffer.writeln(
+            "final ${fieldElement.type.toString().replaceFirst("_", "")} $fieldName;");
+      } else {
+        final fieldValue =
+            fieldElement.computeConstantValue()?.getField("_value");
+        final constantValue = fieldValue != null && !fieldValue.isNull
+            ? fieldValue.toIntValue() ?? "\'${fieldValue.toStringValue()}\'"
+            : null;
+
+        final fieldAnnotation = _coreCheckerEnumSupportedPlatforms
+            .firstAnnotationOfExact(fieldElement);
+        if (fieldAnnotation != null) {
+          final defaultField = fieldAnnotation.getField('defaultValue')!;
+          final defaultValue = !defaultField.isNull
+              ? defaultField.toIntValue() ?? "'${defaultField.toStringValue()}'"
+              : null;
+
+          var nativeValueBody = "() {";
+          nativeValueBody += "switch (defaultTargetPlatform) {";
+          final platforms =
+              fieldAnnotation.getField('platforms')?.toListValue() ??
+                  <DartObject>[];
+          var hasWebSupport = false;
+          var webSupportValue = null;
+          if (platforms.isNotEmpty) {
+            for (var platform in platforms) {
+              final targetPlatformName =
+                  platform.getField("targetPlatformName")!.toStringValue();
+              final platformValueField = platform.getField('value');
+              final platformValue =
+                  platformValueField != null && !platformValueField.isNull
+                      ? platformValueField.toIntValue() ??
+                          "'${platformValueField.toStringValue()}'"
+                      : null;
+              if (targetPlatformName == "web") {
+                hasWebSupport = true;
+                webSupportValue = platformValue;
+                continue;
+              }
+              nativeValueBody += "case TargetPlatform.$targetPlatformName:";
+              nativeValueBody += "return $platformValue;";
+            }
+            nativeValueBody += "default:";
+            nativeValueBody += "break;";
+          }
+          nativeValueBody += "}";
+          if (hasWebSupport) {
+            nativeValueBody += "if (kIsWeb) {";
+            nativeValueBody += "return $webSupportValue;";
+            nativeValueBody += "}";
+          }
+          nativeValueBody += "return $defaultValue;";
+          nativeValueBody += "}";
+
+          classBuffer.writeln(
+              "static final $fieldName = $extClassName._internalMultiPlatform($constantValue, $nativeValueBody);");
+        } else {
+          classBuffer.writeln(
+              "static const $fieldName = $extClassName._internal($constantValue, $constantValue);");
+        }
+      }
+    }
+
+    if (annotation.read("valuesProperty").boolValue) {
+      classBuffer.writeln('///Set of all values of [$extClassName].');
+      classBuffer.writeln('static final Set<$extClassName> values = [');
+      for (final entry in visitor.fields.entries) {
+        final fieldName = entry.key;
+        final fieldElement = entry.value;
+        final isEnumCustomValue = _coreCheckerEnumCustomValue
+            .firstAnnotationOf(fieldElement) != null;
+        if (!fieldElement.isPrivate && fieldElement.isStatic && !isEnumCustomValue) {
+          classBuffer.writeln('$extClassName.$fieldName,');
+        }
+      }
+      classBuffer.writeln('].toSet();');
+    }
+
+    if (annotation.read("fromValueMethod").boolValue && (!visitor.methods.containsKey("fromValue") ||
+        Util.methodHasIgnore(visitor.methods['fromNativeValue']!))) {
+      final hasBitwiseOrOperator =
+          annotation.read("bitwiseOrOperator").boolValue;
+      classBuffer.writeln("""
+      ///Gets a possible [$extClassName] instance from [${enumValue.type}] value.
+      static $extClassName? fromValue(${enumValue.type}${!Util.typeIsNullable(enumValue.type) ? '?' : ''} value) {
+          if (value != null) {
+          try {
+            return $extClassName.values
+                .firstWhere((element) => element.toValue() == value);
+          } catch (e) {
+            return ${!hasBitwiseOrOperator ? 'null' : "$extClassName._internal(value, value)"};
+          }
+        }
+        return null;
+      }
+      """);
+    }
+
+    if (annotation.read("fromNativeValueMethod").boolValue && (!visitor.methods.containsKey("fromNativeValue") ||
+        Util.methodHasIgnore(visitor.methods['fromNativeValue']!))) {
+      final hasBitwiseOrOperator =
+          annotation.read("bitwiseOrOperator").boolValue;
+      classBuffer.writeln("""
+      ///Gets a possible [$extClassName] instance from a native value.
+      static $extClassName? fromNativeValue(${enumNativeValue.type}${!Util.typeIsNullable(enumNativeValue.type) ? '?' : ''} value) {
+          if (value != null) {
+          try {
+            return $extClassName.values
+                .firstWhere((element) => element.toNativeValue() == value);
+          } catch (e) {
+            return ${!hasBitwiseOrOperator ? 'null' : "$extClassName._internal(value, value)"};
+          }
+        }
+        return null;
+      }
+      """);
+    }
+
+    for (final entry in visitor.methods.entries) {
+      final methodElement = entry.value;
+      if (Util.methodHasIgnore(methodElement)) {
+        continue;
+      }
+      ParsedLibraryResult parsed = methodElement.session?.getParsedLibraryByElement(methodElement.library) as ParsedLibraryResult;
+      final methodBody = parsed.getElementDeclaration(methodElement)?.node
+          .toString()
+          .replaceAll(className, extClassName);
+      if (methodBody != null) {
+        final docs = methodElement.documentationComment;
+        if (docs != null) {
+          classBuffer.writeln(docs);
+        }
+        final fieldSupportedDocs =
+        Util.getSupportedDocs(_coreCheckerEnumSupportedPlatforms, methodElement);
+        if (fieldSupportedDocs != null) {
+          classBuffer.writeln(fieldSupportedDocs);
+        }
+        classBuffer.writeln(methodBody);
+      }
+    }
+
+    if (annotation.read("toValueMethod").boolValue && (!visitor.methods.containsKey("toValue") ||
+        Util.methodHasIgnore(visitor.methods['toValue']!))) {
+      classBuffer.writeln("""
+      ///Gets [${enumValue.type}] value.
+      ${enumValue.type} toValue() => _value;
+      """);
+    }
+
+    if (annotation.read("toNativeValueMethod").boolValue && (!visitor.methods.containsKey("toNativeValue") ||
+        Util.methodHasIgnore(visitor.methods['toNativeValue']!))) {
+      classBuffer.writeln("""
+      ///Gets [${enumNativeValue.type}] native value.
+      ${enumNativeValue.type} toNativeValue() => _nativeValue;
+      """);
+    }
+
+    if (annotation.read("hashCodeMethod").boolValue && (!visitor.fields.containsKey("hashCode") ||
+        Util.methodHasIgnore(visitor.methods['hashCode']!))) {
+      classBuffer.writeln("""
+      @override
+      int get hashCode => _value.hashCode;
+      """);
+    }
+
+    if (annotation.read("equalsOperator").boolValue) {
+      classBuffer.writeln("""
+      @override
+      bool operator ==(value) => value == _value;
+      """);
+    }
+
+    if (annotation.read("bitwiseOrOperator").boolValue) {
+      classBuffer.writeln(
+          "$extClassName operator |($extClassName value) => $extClassName._internal(value.toValue() | _value, value.toNativeValue() | _nativeValue);");
+    }
+
+    if (annotation.read("toStringMethod").boolValue && (!visitor.methods.containsKey("toString") ||
+        Util.methodHasIgnore(visitor.methods['toString']!))) {
+      classBuffer.writeln('@override');
+      classBuffer.writeln('String toString() {');
+      if (enumValue.type.isDartCoreString) {
+        classBuffer.writeln('return _value;');
+      } else {
+        classBuffer.writeln('switch(_value) {');
+        for (final entry in visitor.fields.entries) {
+          final fieldName = entry.key;
+          final fieldElement = entry.value;
+          if (!fieldElement.isPrivate && fieldElement.isStatic) {
+            final fieldValue =
+                fieldElement.computeConstantValue()?.getField("_value");
+            final constantValue = fieldValue?.toIntValue();
+            classBuffer.writeln("case $constantValue: return '$fieldName';");
+          }
+        }
+        classBuffer.writeln('}');
+        classBuffer.writeln('return _value.toString();');
+      }
+      classBuffer.writeln('}');
+    }
+
+    classBuffer.writeln('}');
+    return classBuffer.toString();
+  }
+}

dev_packages/generators/lib/src/exchangeable_object_generator.dart

@@ -0,0 +1,771 @@
+import 'package:build/src/builder/build_step.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/element/type.dart';
+import 'package:source_gen/source_gen.dart';
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+import 'model_visitor.dart';
+import 'util.dart';
+
+final _coreChecker = const TypeChecker.fromRuntime(ExchangeableObject);
+final _coreCheckerObjectConstructor =
+    const TypeChecker.fromRuntime(ExchangeableObjectConstructor);
+final _coreCheckerObjectProperty =
+    const TypeChecker.fromRuntime(ExchangeableObjectProperty);
+final _coreCheckerObjectMethod =
+    const TypeChecker.fromRuntime(ExchangeableObjectMethod);
+final _coreCheckerEnum = const TypeChecker.fromRuntime(ExchangeableEnum);
+final _coreCheckerDeprecated = const TypeChecker.fromRuntime(Deprecated);
+final _coreCheckerSupportedPlatforms =
+    const TypeChecker.fromRuntime(SupportedPlatforms);
+
+class ExchangeableObjectGenerator
+    extends GeneratorForAnnotation<ExchangeableObject> {
+  @override
+  String generateForAnnotatedElement(
+      Element element, ConstantReader annotation, BuildStep buildStep) {
+    final visitor = ModelVisitor();
+    // Visits all the children of element in no particular order.
+    element.visitChildren(visitor);
+
+    final className = visitor.constructor.returnType.element2.name;
+    final superClass =
+        visitor.constructor.returnType.superclass?.element2.name != 'Object'
+            ? visitor.constructor.returnType.superclass
+            : null;
+    final interfaces = visitor.constructor.returnType.interfaces;
+    final superClassName = superClass?.element2.name.replaceFirst("_", "");
+    // remove "_" to generate the correct class name
+    final extClassName = className.replaceFirst("_", "");
+
+    final classBuffer = StringBuffer();
+    final classDocs =
+        visitor.constructor.returnType.element2.documentationComment;
+    if (classDocs != null) {
+      classBuffer.writeln(classDocs);
+    }
+    final classSupportedDocs = Util.getSupportedDocs(
+        _coreCheckerSupportedPlatforms, visitor.constructor.returnType.element2);
+    if (classSupportedDocs != null) {
+      classBuffer.writeln(classSupportedDocs);
+    }
+    if (visitor.constructor.returnType.element2.hasDeprecated) {
+      classBuffer.writeln(
+          "@Deprecated('${_coreCheckerDeprecated.firstAnnotationOfExact(visitor.constructor.returnType.element2)?.getField("message")?.toStringValue()}')");
+    }
+
+    classBuffer.write('${(visitor.constructor.enclosingElement3 as ClassElement).isAbstract ? 'abstract ' : ''}class $extClassName');
+    if (interfaces.isNotEmpty) {
+      classBuffer.writeln(' implements ${interfaces.map((i) => i.element2.name.replaceFirst("_", "")).join(', ')}');
+    }
+    if (superClass != null) {
+      classBuffer.writeln(' extends ${superClassName}');
+    }
+    classBuffer.writeln(' {');
+
+    final deprecatedFields = <VariableElement>[];
+    final constructorFields = <String>[];
+    final superConstructorFields = <String>[];
+    for (final entry in visitor.fields.entries) {
+      final fieldName = entry.key;
+      final fieldElement = entry.value;
+      if (!fieldElement.isPrivate) {
+        final isNullable = Util.typeIsNullable(fieldElement.type);
+        final constructorParameter = visitor.constructorParameters[fieldName];
+        if (constructorParameter != null) {
+          // remove class reference terminating with "_"
+          var defaultValueCode =
+              constructorParameter.defaultValueCode?.replaceFirst("_.", ".");
+          var constructorField =
+              '${!isNullable && defaultValueCode == null ? 'required ' : ''}this.$fieldName${defaultValueCode != null ? ' = $defaultValueCode' : ''}';
+          if (fieldElement.hasDeprecated) {
+            deprecatedFields.add(fieldElement);
+            constructorField =
+                "@Deprecated('${_coreCheckerDeprecated.firstAnnotationOfExact(fieldElement)?.getField("message")?.toStringValue()}') " +
+                    constructorField;
+          }
+          constructorFields.add(constructorField);
+        }
+      }
+      final docs = fieldElement.documentationComment;
+      if (docs != null) {
+        classBuffer.writeln(docs);
+      }
+      final fieldSupportedDocs =
+          Util.getSupportedDocs(_coreCheckerSupportedPlatforms, fieldElement);
+      if (fieldSupportedDocs != null) {
+        classBuffer.writeln(fieldSupportedDocs);
+      }
+      if (fieldElement.hasDeprecated) {
+        classBuffer.writeln(
+            "@Deprecated('${_coreCheckerDeprecated.firstAnnotationOfExact(fieldElement)?.getField("message")?.toStringValue()}')");
+      }
+      if (fieldElement.isStatic) {
+        classBuffer.write("static ");
+      }
+      if (fieldElement.isLate) {
+        classBuffer.write("late ");
+      }
+      if (fieldElement.isFinal) {
+        classBuffer.write("final ");
+      }
+      if (fieldElement.isConst) {
+        classBuffer.write("const ");
+      }
+      // remove class reference terminating with "_"
+      classBuffer
+          .write("${fieldElement.type.toString().replaceFirst("_", "")} ");
+      if (!fieldElement.hasInitializer) {
+        classBuffer.writeln("$fieldName;");
+      } else {
+        ParsedLibraryResult parsed = fieldElement.session
+                ?.getParsedLibraryByElement(fieldElement.library)
+            as ParsedLibraryResult;
+        final fieldBody = parsed
+            .getElementDeclaration(fieldElement)
+            ?.node
+            .toString()
+            .replaceAll(className, extClassName);
+        classBuffer.writeln("$fieldBody;");
+      }
+    }
+
+    if (superClass != null) {
+      ConstructorElement superConstructor = superClass.constructors.first;
+      for (final parameter in superConstructor.parameters) {
+        final parameterName = parameter.name;
+        final parameterType = parameter.type;
+        final isNullable = Util.typeIsNullable(parameter.type);
+        // remove class reference terminating with "_"
+        var defaultValueCode =
+            parameter.defaultValueCode?.replaceFirst("_.", ".");
+        var constructorField =
+            '${!isNullable && defaultValueCode == null ? 'required ' : ''}${parameterType.toString().replaceFirst("_", "")} $parameterName${defaultValueCode != null ? ' = $defaultValueCode' : ''}';
+        if (parameter.hasDeprecated) {
+          deprecatedFields.add(parameter);
+          constructorField =
+              "@Deprecated('${_coreCheckerDeprecated.firstAnnotationOfExact(parameter)?.getField("message")?.toStringValue()}') " +
+                  constructorField;
+        }
+        constructorFields.add(constructorField);
+        superConstructorFields.add("$parameterName: $parameterName");
+      }
+    }
+
+    final hasCustomConstructor =
+        _coreCheckerObjectConstructor.hasAnnotationOf(visitor.constructor);
+    final constructorDocs = visitor.constructor.documentationComment;
+    if (constructorDocs != null) {
+      classBuffer.writeln(constructorDocs);
+    }
+    var constructorSupportedDocs = Util.getSupportedDocs(
+        _coreCheckerSupportedPlatforms, visitor.constructor);
+    if (constructorSupportedDocs == null) {
+      constructorSupportedDocs = Util.getSupportedDocs(
+          _coreCheckerSupportedPlatforms,
+          visitor.constructor.returnType.element2);
+    }
+    if (constructorSupportedDocs != null) {
+      classBuffer.writeln(constructorSupportedDocs);
+    }
+    if (hasCustomConstructor) {
+      ParsedLibraryResult parsed = visitor.constructor.session
+              ?.getParsedLibraryByElement(visitor.constructor.library)
+          as ParsedLibraryResult;
+      final constructorBody =
+          parsed.getElementDeclaration(visitor.constructor)?.node;
+      if (constructorBody != null) {
+        classBuffer.writeln(constructorBody
+            .toString()
+            .replaceAll(className, extClassName)
+            .replaceAll("_.", ".")
+            .replaceAll("@ExchangeableObjectConstructor()", ""));
+      }
+    } else if (constructorFields.length > 0) {
+      if (visitor.constructor.isConst) {
+        classBuffer.write('const ');
+      }
+      classBuffer.writeln('$extClassName({');
+      classBuffer.writeln(constructorFields.join(', '));
+    } else {
+      if (visitor.constructor.isConst) {
+        classBuffer.write('const ');
+      }
+      classBuffer.writeln('$extClassName(');
+    }
+
+    if (!hasCustomConstructor && constructorFields.length > 0) {
+      classBuffer.write('})');
+    } else if (!hasCustomConstructor) {
+      classBuffer.write(')');
+    }
+
+    if (superClass != null) {
+      classBuffer.write(': super(');
+      if (superConstructorFields.isNotEmpty) {
+        classBuffer.write('${superConstructorFields.join(", ")}');
+      }
+      classBuffer.write(')');
+    }
+
+    if (!hasCustomConstructor && deprecatedFields.length > 0) {
+      classBuffer.writeln(' {');
+      for (final deprecatedField in deprecatedFields) {
+        final deprecatedFieldName = deprecatedField.name;
+        final message = _coreCheckerDeprecated
+            .firstAnnotationOfExact(deprecatedField)!
+            .getField("message")!
+            .toStringValue()!;
+        final fieldName = message
+            .replaceFirst("Use ", "")
+            .replaceFirst(" instead", "")
+            .trim();
+        final fieldElement = visitor.fields[fieldName];
+        if (fieldElement != null) {
+          final fieldTypeElement = fieldElement.type.element2;
+          final deprecatedFieldTypeElement = deprecatedField.type.element2;
+
+          final isNullable = Util.typeIsNullable(fieldElement.type);
+          var hasDefaultValue = (fieldElement is ParameterElement) ? (fieldElement as ParameterElement).hasDefaultValue : false;
+          if (!isNullable && hasDefaultValue) {
+            continue;
+          }
+
+          classBuffer.write('$fieldName = $fieldName ?? ');
+          if (fieldTypeElement != null && deprecatedFieldTypeElement != null) {
+            final deprecatedIsNullable =
+                Util.typeIsNullable(deprecatedField.type);
+            final hasFromMap = hasFromMapMethod(fieldTypeElement);
+            final hasFromNativeValue =
+                hasFromNativeValueMethod(fieldTypeElement);
+            final hasFromValue = hasFromValueMethod(fieldTypeElement);
+            final deprecatedHasToMap =
+                hasFromMapMethod(deprecatedFieldTypeElement);
+            final deprecatedHasToNativeValue =
+                hasToNativeValueMethod(deprecatedFieldTypeElement);
+            final deprecatedHasToValue =
+                hasToValueMethod(deprecatedFieldTypeElement);
+            if (hasFromMap && deprecatedHasToMap) {
+              final hasNullableFromMap =
+                  hasNullableFromMapFactory(fieldTypeElement);
+              classBuffer.write(fieldTypeElement.name!.replaceFirst("_", "") +
+                  ".fromMap($deprecatedFieldName${deprecatedIsNullable ? '?' : ''}.toMap())${!isNullable && hasNullableFromMap ? '!' : ''}");
+            } else if (hasFromNativeValue && deprecatedHasToNativeValue) {
+              classBuffer.write(fieldTypeElement.name!.replaceFirst("_", "") +
+                  '.fromNativeValue($deprecatedFieldName${deprecatedIsNullable ? '?' : ''}.toNativeValue())${!isNullable ? '!' : ''}');
+            } else if (hasFromValue && deprecatedHasToValue) {
+              classBuffer.write(fieldTypeElement.name!.replaceFirst("_", "") +
+                  '.fromValue($deprecatedFieldName${deprecatedIsNullable ? '?' : ''}.toValue())${!isNullable ? '!' : ''}');
+            } else {
+              classBuffer.write(deprecatedFieldName);
+            }
+          } else {
+            classBuffer.write(deprecatedFieldName);
+          }
+          classBuffer.writeln(';');
+        }
+      }
+      classBuffer.writeln('}');
+    } else if (!hasCustomConstructor) {
+      classBuffer.writeln(';');
+    }
+
+    if (annotation.read("fromMapFactory").boolValue && (!visitor.methods.containsKey("fromMap") ||
+        Util.methodHasIgnore(visitor.methods['fromMap']!))) {
+      classBuffer.writeln(
+          '///Gets a possible [$extClassName] instance from a [Map] value.');
+      final nullable = annotation.read("nullableFromMapFactory").boolValue;
+      classBuffer
+          .writeln('static $extClassName${nullable ? '?' : ''} fromMap(');
+      classBuffer.writeln('Map<String, dynamic>${nullable ? '?' : ''} map');
+      classBuffer.writeln(') {');
+      if (nullable) {
+        classBuffer.writeln('if (map == null) { return null; }');
+      }
+      classBuffer.writeln('final instance = $extClassName(');
+      final fieldElements = <FieldElement>[];
+      if (superClass != null) {
+        fieldElements.addAll(superClass.element2.fields);
+      }
+      fieldElements.addAll(visitor.fields.values);
+      final nonRequiredFields = <String>[];
+      final requiredFields = <String>[];
+      for (final fieldElement in fieldElements) {
+        final fieldName = fieldElement.name;
+        if (!fieldElement.isPrivate &&
+            !fieldElement.isStatic &&
+            !fieldElement.type.isDartCoreFunction) {
+          var value = "map['$fieldName']";
+          final deprecationMessage = _coreCheckerDeprecated
+              .firstAnnotationOfExact(fieldElement)
+              ?.getField("message")
+              ?.toStringValue();
+          if (deprecationMessage != null) {
+            final newFieldName = deprecationMessage
+                .replaceFirst("Use ", "")
+                .replaceFirst(" instead", "")
+                .trim();
+            value = "map['$newFieldName']";
+          }
+
+          final customDeserializer = _coreCheckerObjectProperty
+              .firstAnnotationOf(fieldElement)
+              ?.getField("deserializer")
+              ?.toFunctionValue();
+          if (customDeserializer != null) {
+            final deserializerClassName =
+                customDeserializer.enclosingElement3.name;
+            if (deserializerClassName != null) {
+              value =
+                  "$deserializerClassName.${customDeserializer.name}($value)";
+            } else {
+              value = "${customDeserializer.name}($value)";
+            }
+          } else {
+            value = getFromMapValue(value, fieldElement.type);
+          }
+          final constructorParameter = visitor.constructorParameters[fieldName];
+          final isRequiredParameter = constructorParameter != null &&
+              (constructorParameter.isRequiredNamed ||
+                  constructorParameter.isFinal ||
+                  !Util.typeIsNullable(constructorParameter.type)) &&
+              !constructorParameter.hasDefaultValue;
+          if (isRequiredParameter) {
+            requiredFields.add('$fieldName: $value,');
+          } else {
+            nonRequiredFields.add("instance.$fieldName = $value;");
+          }
+        }
+      }
+      classBuffer.writeln(requiredFields.join("\n") + ');');
+      if (nonRequiredFields.isNotEmpty) {
+        classBuffer.writeln(nonRequiredFields.join("\n"));
+      }
+      classBuffer.writeln('return instance;');
+      classBuffer.writeln('}');
+    }
+
+    for (final entry in visitor.methods.entries) {
+      final methodElement = entry.value;
+      if (Util.methodHasIgnore(methodElement)) {
+        continue;
+      }
+      ParsedLibraryResult parsed = methodElement.session
+              ?.getParsedLibraryByElement(methodElement.library)
+          as ParsedLibraryResult;
+      final methodBody = parsed.getElementDeclaration(methodElement)?.node;
+      if (methodBody != null) {
+        final docs = methodElement.documentationComment;
+        if (docs != null) {
+          classBuffer.writeln(docs);
+        }
+        final fieldSupportedDocs = Util.getSupportedDocs(
+            _coreCheckerSupportedPlatforms, methodElement);
+        if (fieldSupportedDocs != null) {
+          classBuffer.writeln(fieldSupportedDocs);
+        }
+        classBuffer
+            .writeln(methodBody.toString().replaceAll(className, extClassName));
+      }
+    }
+
+    if (annotation.read("toMapMethod").boolValue && (!visitor.methods.containsKey("toMap") ||
+        Util.methodHasIgnore(visitor.methods['toMap']!))) {
+      classBuffer.writeln('///Converts instance to a map.');
+      classBuffer.writeln('Map<String, dynamic> toMap() {');
+      classBuffer.writeln('return {');
+      for (final entry in visitor.methods.entries) {
+        final methodElement = entry.value;
+        final toMapMergeWith = _coreCheckerObjectMethod
+            .firstAnnotationOf(methodElement)
+            ?.getField("toMapMergeWith")
+            ?.toBoolValue();
+        if (toMapMergeWith == true) {
+          classBuffer.writeln('...${methodElement.name}(),');
+        }
+      }
+      final fieldElements = <FieldElement>[];
+      if (superClass != null) {
+        for (final fieldElement in superClass.element2.fields) {
+          if (!fieldElement.isPrivate &&
+              !fieldElement.hasDeprecated &&
+              !fieldElement.isStatic &&
+              !fieldElement.type.isDartCoreFunction) {
+            fieldElements.add(fieldElement);
+          }
+        }
+      }
+      for (final entry in visitor.fields.entries) {
+        final fieldElement = entry.value;
+        if (!fieldElement.isPrivate &&
+            !fieldElement.hasDeprecated &&
+            !fieldElement.isStatic &&
+            !fieldElement.type.isDartCoreFunction) {
+          fieldElements.add(fieldElement);
+        }
+      }
+      for (final fieldElement in fieldElements) {
+        if (!fieldElement.isPrivate &&
+            !fieldElement.hasDeprecated &&
+            !fieldElement.isStatic &&
+            !fieldElement.type.isDartCoreFunction) {
+          final fieldName = fieldElement.name;
+          var mapValue = fieldName;
+          final customSerializer = _coreCheckerObjectProperty
+              .firstAnnotationOf(fieldElement)
+              ?.getField("serializer")
+              ?.toFunctionValue();
+          if (customSerializer != null) {
+            final serializerClassName = customSerializer.enclosingElement3.name;
+            if (serializerClassName != null) {
+              mapValue =
+                  "$serializerClassName.${customSerializer.name}($mapValue)";
+            } else {
+              mapValue = "${customSerializer.name}($mapValue)";
+            }
+          } else {
+            mapValue = getToMapValue(fieldName, fieldElement.type);
+          }
+
+          classBuffer.writeln('"$fieldName": $mapValue,');
+        }
+      }
+      classBuffer.writeln('};');
+      classBuffer.writeln('}');
+    }
+
+    if (annotation.read("toJsonMethod").boolValue && (!visitor.methods.containsKey("toJson") ||
+        Util.methodHasIgnore(visitor.methods['toJson']!))) {
+      classBuffer.writeln('///Converts instance to a map.');
+      classBuffer.writeln('Map<String, dynamic> toJson() {');
+      classBuffer.writeln('return toMap();');
+      classBuffer.writeln('}');
+    }
+
+    if (annotation.read("toStringMethod").boolValue && (!visitor.methods.containsKey("toString") ||
+        Util.methodHasIgnore(visitor.methods['toString']!))) {
+      classBuffer.writeln('@override');
+      classBuffer.writeln('String toString() {');
+      classBuffer.write('return \'$extClassName{');
+      final fieldNames = <String>[];
+      if (superClass != null) {
+        for (final fieldElement in superClass.element2.fields) {
+          final fieldName = fieldElement.name;
+          if (!fieldElement.isPrivate &&
+              !fieldElement.hasDeprecated &&
+              !fieldElement.isStatic &&
+              !fieldElement.type.isDartCoreFunction) {
+            fieldNames.add('$fieldName: \$$fieldName');
+          }
+        }
+      }
+      for (final entry in visitor.fields.entries) {
+        final fieldName = entry.key;
+        final fieldElement = entry.value;
+        if (!fieldElement.isPrivate &&
+            !fieldElement.hasDeprecated &&
+            !fieldElement.isStatic &&
+            !fieldElement.type.isDartCoreFunction) {
+          fieldNames.add('$fieldName: \$$fieldName');
+        }
+      }
+      classBuffer.write(fieldNames.join(', '));
+      classBuffer.writeln('}\';');
+      classBuffer.writeln('}');
+    }
+
+    classBuffer.writeln('}');
+    return classBuffer.toString();
+  }
+
+  String getFromMapValue(String value, DartType elementType) {
+    final fieldTypeElement = elementType.element2;
+    final isNullable = Util.typeIsNullable(elementType);
+    if (elementType.getDisplayString(withNullability: false) == "Uri") {
+      if (!isNullable) {
+        return "Uri.parse($value)";
+      } else {
+        return "$value != null ? Uri.parse($value) : null";
+      }
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "Color") {
+      if (!isNullable) {
+        return "UtilColor.fromStringRepresentation($value)!";
+      } else {
+        return "$value != null ? UtilColor.fromStringRepresentation($value) : null";
+      }
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "EdgeInsets") {
+      return "MapEdgeInsets.fromMap($value?.cast<String, dynamic>())${isNullable ? '!' : ''}";
+    } else if (elementType.getDisplayString(withNullability: false) == "Size") {
+      return "MapSize.fromMap($value?.cast<String, dynamic>())${isNullable ? '!' : ''}";
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "DateTime") {
+      if (!isNullable) {
+        return "DateTime.fromMillisecondsSinceEpoch($value)!";
+      } else {
+        return "$value != null ? DateTime.fromMillisecondsSinceEpoch($value) : null";
+      }
+    } else if (elementType.isDartCoreList || elementType.isDartCoreSet) {
+      final genericTypes = Util.getGenericTypes(elementType);
+      final genericType = genericTypes.isNotEmpty ? genericTypes.first : null;
+      final genericTypeReplaced = genericType != null ? genericType.toString().replaceAll("_", "") : null;
+      if (genericType != null && !Util.isDartCoreType(genericType)) {
+        final genericTypeFieldName = 'e';
+        return (isNullable ? '$value != null ? ' : '') +
+            "${elementType.isDartCoreSet ? 'Set' : 'List'}<$genericTypeReplaced>.from(" +
+            value +
+            '.map(($genericTypeFieldName) => ' +
+            getFromMapValue('$genericTypeFieldName', genericType) +
+            '))' +
+            (isNullable ? ' : null' : '');
+      } else {
+        if (genericType != null) {
+          return "$value${isNullable ? '?' : ''}.cast<${genericTypeReplaced}>()";
+        } else {
+          return value;
+        }
+      }
+    } else if (elementType.isDartCoreMap) {
+      final genericTypes = Util.getGenericTypes(elementType);
+      return "$value${isNullable ? '?' : ''}.cast<${genericTypes.elementAt(0)}, ${genericTypes.elementAt(1)}>()";
+    } else if (fieldTypeElement != null && hasFromMapMethod(fieldTypeElement)) {
+      final hasNullableFromMap = hasNullableFromMapFactory(fieldTypeElement);
+      // remove class reference terminating with "_"
+      return fieldTypeElement.name!.replaceFirst("_", "") +
+          ".fromMap($value?.cast<String, dynamic>())${!isNullable && hasNullableFromMap ? '!' : ''}";
+    } else {
+      final hasFromValue =
+          fieldTypeElement != null && hasFromValueMethod(fieldTypeElement);
+      final hasFromNativeValue = fieldTypeElement != null &&
+          hasFromNativeValueMethod(fieldTypeElement);
+      if (fieldTypeElement != null && (hasFromValue || hasFromNativeValue)) {
+        if (hasFromNativeValue) {
+          // remove class reference terminating with "_"
+          value = fieldTypeElement.name!.replaceFirst("_", "") +
+              '.fromNativeValue($value)';
+        } else {
+          // remove class reference terminating with "_"
+          value = fieldTypeElement.name!.replaceFirst("_", "") +
+              '.fromValue($value)';
+        }
+        if (!isNullable) {
+          value += '!';
+        }
+        return value;
+      }
+    }
+
+    return value;
+  }
+
+  String getToMapValue(String fieldName, DartType elementType) {
+    final fieldTypeElement = elementType.element2;
+    final isNullable = Util.typeIsNullable(elementType);
+    if (elementType.getDisplayString(withNullability: false) == "Uri") {
+      return fieldName + (isNullable ? '?' : '') + '.toString()';
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "Color") {
+      return fieldName + (isNullable ? '?' : '') + '.toHex()';
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "EdgeInsets") {
+      return fieldName + (isNullable ? '?' : '') + '.toMap()';
+    } else if (elementType.getDisplayString(withNullability: false) == "Size") {
+      return fieldName + (isNullable ? '?' : '') + '.toMap()';
+    } else if (elementType.getDisplayString(withNullability: false) ==
+        "DateTime") {
+      return fieldName + (isNullable ? '?' : '') + '.millisecondsSinceEpoch';
+    } else if (elementType.isDartCoreList || elementType.isDartCoreSet) {
+      final genericType = Util.getGenericTypes(elementType).first;
+      if (!Util.isDartCoreType(genericType)) {
+        final genericTypeFieldName = 'e';
+        return fieldName +
+            (isNullable ? '?' : '') +
+            '.map(($genericTypeFieldName) => ' +
+            getToMapValue('$genericTypeFieldName', genericType) +
+            ').toList()';
+      } else {
+        return fieldName;
+      }
+    } else if (fieldTypeElement != null && hasToMapMethod(fieldTypeElement)) {
+      return fieldName +
+          (Util.typeIsNullable(elementType) ? '?' : '') +
+          '.toMap()';
+    } else {
+      final hasToValue =
+          fieldTypeElement != null && hasToValueMethod(fieldTypeElement);
+      final hasToNativeValue =
+          fieldTypeElement != null && hasToNativeValueMethod(fieldTypeElement);
+      if (fieldTypeElement != null && (hasToValue || hasToNativeValue)) {
+        if (hasToNativeValue) {
+          return fieldName + (isNullable ? '?' : '') + '.toNativeValue()';
+        } else {
+          return fieldName + (isNullable ? '?' : '') + '.toValue()';
+        }
+      }
+    }
+
+    return fieldName;
+  }
+
+  bool hasToMapMethod(Element element) {
+    final hasAnnotation = _coreChecker.hasAnnotationOf(element);
+    final toMapMethod = _coreChecker
+            .firstAnnotationOfExact(element)
+            ?.getField('toMapMethod')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && toMapMethod) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "toMap") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasFromMapMethod(Element element) {
+    final hasAnnotation = _coreChecker.hasAnnotationOf(element);
+    final fromMapFactory = _coreChecker
+            .firstAnnotationOfExact(element)
+            ?.getField('fromMapFactory')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && fromMapFactory) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "fromMap") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasNullableFromMapFactory(Element element) {
+    final hasAnnotation = _coreChecker.hasAnnotationOf(element);
+    final fromMapFactory = _coreChecker
+            .firstAnnotationOfExact(element)
+            ?.getField('fromMapFactory')
+            ?.toBoolValue() ??
+        false;
+    final nullableFromMapFactory = _coreChecker
+            .firstAnnotationOfExact(element)
+            ?.getField('nullableFromMapFactory')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && fromMapFactory && nullableFromMapFactory) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "fromMap" &&
+          Util.typeIsNullable(entry.value.returnType)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasFromValueMethod(Element element) {
+    final hasAnnotation = _coreCheckerEnum.hasAnnotationOf(element);
+    final fromValueMethod = _coreCheckerEnum
+            .firstAnnotationOfExact(element)
+            ?.getField('fromValueMethod')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && fromValueMethod) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "fromValue") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasFromNativeValueMethod(Element element) {
+    final hasAnnotation = _coreCheckerEnum.hasAnnotationOf(element);
+    final fromNativeValueMethod = _coreCheckerEnum
+            .firstAnnotationOfExact(element)
+            ?.getField('fromNativeValueMethod')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && fromNativeValueMethod) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "fromNativeValue") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasToValueMethod(Element element) {
+    final hasAnnotation = _coreCheckerEnum.hasAnnotationOf(element);
+    final hasToValueMethod = _coreCheckerEnum
+            .firstAnnotationOfExact(element)
+            ?.getField('toValueMethod')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && hasToValueMethod) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "toValue") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  bool hasToNativeValueMethod(Element element) {
+    final hasAnnotation = _coreCheckerEnum.hasAnnotationOf(element);
+    final hasToNativeValueMethod = _coreCheckerEnum
+            .firstAnnotationOfExact(element)
+            ?.getField('toNativeValueMethod')
+            ?.toBoolValue() ??
+        false;
+    if (hasAnnotation && hasToNativeValueMethod) {
+      return true;
+    }
+
+    final fieldVisitor = ModelVisitor();
+    element.visitChildren(fieldVisitor);
+    for (var entry in fieldVisitor.methods.entries) {
+      if (entry.key == "toNativeValue") {
+        return true;
+      }
+    }
+
+    return false;
+  }
+}

dev_packages/generators/lib/src/model_visitor.dart

@@ -0,0 +1,27 @@
+import 'package:analyzer/dart/element/visitor.dart';
+import 'package:analyzer/dart/element/element.dart';
+
+class ModelVisitor extends SimpleElementVisitor<void> {
+  late ConstructorElement constructor;
+  final constructorParameters = <String, ParameterElement>{};
+  final fields = <String, FieldElement>{};
+  final methods = <String, MethodElement>{};
+
+  @override
+  void visitConstructorElement(ConstructorElement element) {
+    constructor = element;
+    for (final param in element.parameters) {
+      constructorParameters.putIfAbsent(param.name, () => param);
+    }
+  }
+
+  @override
+  void visitFieldElement(FieldElement element) {
+    fields[element.name] = element;
+  }
+
+  @override
+  void visitMethodElement(MethodElement element) {
+    methods[element.name] = element;
+  }
+}

dev_packages/generators/lib/src/util.dart

@@ -0,0 +1,103 @@
+import 'package:analyzer/dart/element/element.dart';
+import 'package:source_gen/source_gen.dart';
+import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/dart/element/nullability_suffix.dart';
+import 'package:analyzer/dart/constant/value.dart';
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+final _coreCheckerObjectMethod =
+    const TypeChecker.fromRuntime(ExchangeableObjectMethod);
+
+abstract class Util {
+  static bool typeIsNullable(DartType type) {
+    return type.nullabilitySuffix != NullabilitySuffix.none ||
+        type.toString() == 'dynamic';
+  }
+
+  static bool methodHasIgnore(MethodElement method) {
+    return _coreCheckerObjectMethod
+            .firstAnnotationOf(method)
+            ?.getField("ignore")
+            ?.toBoolValue() ==
+        true;
+  }
+
+  static String? getSupportedDocs(TypeChecker checker, Element element) {
+    final platformNoteList = <String>[];
+    final platformSupportedList = <String>[];
+    final platforms = checker
+            .firstAnnotationOfExact(element)
+            ?.getField('platforms')
+            ?.toListValue() ??
+        <DartObject>[];
+    for (var platform in platforms) {
+      final platformName = platform.getField("name")!.toStringValue();
+      final note = platform.getField("note")?.toStringValue();
+      if (note != null) {
+        platformNoteList.add("///**NOTE for $platformName**: $note");
+      }
+
+      final apiName = platform.getField("apiName")?.toStringValue();
+      final apiUrl = platform.getField("apiUrl")?.toStringValue();
+      final available = platform.getField("available")?.toStringValue();
+      final requiresSameOrigin =
+          platform.getField("requiresSameOrigin")?.toBoolValue() ?? false;
+      var api = available != null ? "$available+ " : "";
+      if (requiresSameOrigin) {
+        api += "but iframe requires same origin ";
+      }
+      if (apiName != null && apiUrl != null) {
+        api += "([Official API - $apiName]($apiUrl))";
+      } else if (apiName != null) {
+        api += "(Official API - $apiName)";
+      } else if (apiUrl != null) {
+        api += "([Official API]($apiUrl))";
+      }
+      platformSupportedList.add("///- $platformName $api");
+    }
+    if (platformSupportedList.isNotEmpty) {
+      if (platformNoteList.isNotEmpty) {
+        return """///
+        ${platformNoteList.join("\n///\n")}
+        ///
+        ///**Supported Platforms/Implementations**:
+        ${platformSupportedList.join("\n")}""";
+      } else {
+        return """///
+        ///**Supported Platforms/Implementations**:
+        ${platformSupportedList.join("\n")}""";
+      }
+    }
+    return null;
+  }
+
+  static Iterable<DartType> getGenericTypes(DartType type) {
+    return type is ParameterizedType ? type.typeArguments : const [];
+  }
+
+  static bool canHaveGenerics(DartType type) {
+    final element = type.element2;
+    if (element is ClassElement) {
+      return element.typeParameters.isNotEmpty;
+    }
+    return false;
+  }
+
+  static bool isDartCoreType(DartType type) {
+    return type.isDartCoreBool ||
+        type.isDartCoreDouble ||
+        type.isDartCoreEnum ||
+        type.isDartCoreFunction ||
+        type.isDartCoreInt ||
+        type.isDartCoreIterable ||
+        type.isDartCoreList ||
+        type.isDartCoreMap ||
+        type.isDartCoreNull ||
+        type.isDartCoreNum ||
+        type.isDartCoreObject ||
+        type.isDartCoreSet ||
+        type.isDartCoreString ||
+        type.isDartCoreSymbol ||
+        type.isDynamic;
+  }
+}

dev_packages/generators/pubspec.lock

@@ -0,0 +1,506 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "49.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.3.1"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.9.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  build:
+    dependency: "direct main"
+    description:
+      name: build
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.3.1"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
+  build_resolvers:
+    dependency: transitive
+    description:
+      name: build_resolvers
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.10"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
+  build_runner_core:
+    dependency: transitive
+    description:
+      name: build_runner_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "7.2.4"
+  build_test:
+    dependency: "direct dev"
+    description:
+      name: build_test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.5"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.4.1"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.3.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.16.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  csslib:
+    dependency: transitive
+    description:
+      name: csslib
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.2"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.4"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.4"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_inappwebview_internal_annotations:
+    dependency: "direct main"
+    description:
+      path: "../flutter_inappwebview_internal_annotations"
+      relative: true
+    source: path
+    version: "1.0.0"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  html:
+    dependency: transitive
+    description:
+      name: html
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.15.0"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.1"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.4"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.7.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.12"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.5"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.2"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.0"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_gen:
+    dependency: "direct main"
+    description:
+      name: source_gen
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.5"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.10.10"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.9.1"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.21.6"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.14"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.18"
+  timing:
+    dependency: transitive
+    description:
+      name: timing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.2"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.4.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.1"
+sdks:
+  dart: ">=2.18.0 <3.0.0"
+  flutter: ">=2.5.0"

dev_packages/generators/pubspec.yaml

@@ -0,0 +1,21 @@
+name: generators
+version: 1.0.0
+
+publish_to: none
+
+environment:
+  sdk: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  build: ^2.3.1
+  source_gen: ^1.2.5
+  flutter_inappwebview_internal_annotations:
+    path: ../flutter_inappwebview_internal_annotations/
+
+dev_dependencies:
+  build_runner: ^2.2.1
+  build_test: ^2.1.5
+  test: ^1.21.1

dev_packages/test_gen/analysis_options.yaml

@@ -0,0 +1,11 @@
+include: package:lints/recommended.yaml
+
+linter:
+  rules:
+    constant_identifier_names: ignore
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options
+analyzer:
+  errors:
+    deprecated_member_use_from_same_package: ignore

dev_packages/test_gen/lib/src/main.dart

@@ -0,0 +1,6 @@
+import 'package:test_gen/src/types/main.dart';
+import 'package:test_gen/src/types/test_enum.dart';
+
+void main() {
+  TestClass test = TestClass(test1: "test1", test2: TestClass2(test1: ""), actionModeMenuItem: ActionModeMenuItem.MENU_ITEM_NONE);
+}

dev_packages/test_gen/lib/src/test/test_class_2.dart

@@ -0,0 +1,10 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+part 'test_class_2.g.dart';
+
+@ExchangeableObject()
+class TestClass2_ {
+  String test1;
+
+  TestClass2_({required this.test1});
+}

dev_packages/test_gen/lib/src/types/main.dart

@@ -0,0 +1,2 @@
+export 'test_class.dart' show TestClass;
+export '../test/test_class_2.dart' show TestClass2;

dev_packages/test_gen/lib/src/types/test_class.dart

@@ -0,0 +1,186 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+import '../test/test_class_2.dart';
+import 'test_enum.dart';
+
+part 'test_class.g.dart';
+
+///Custom docs
+// @ExchangeableObject()
+@SupportedPlatforms(platforms: [
+  AndroidPlatform(
+      apiName: "TestClass",
+      available: "24",
+      note: "[test1] is always `null`."
+  ),
+  IOSPlatform(
+      apiName: "TestClass",
+      available: "15.0",
+      note: "[test2] is always `null`."
+  ),
+  WebPlatform(),
+])
+class TestClass_ extends TestClass3_ {
+  ///Docs 1
+  String test1;
+  ///Docs 2
+  List<TestClass2_> test2;
+
+  List<Color?>? colors;
+
+  Function? onLoad;
+
+  ///Docs 3
+  @SupportedPlatforms(platforms: [
+    AndroidPlatform(
+        apiName: "WebSettings.setDisabledActionModeMenuItems",
+        apiUrl: "https://developer.android.com/reference/android/webkit/WebSettings#setDisabledActionModeMenuItems(int)",
+        available: "24"
+    )
+  ])
+  List<ActionModeMenuItem_?> actionModeMenuItem;
+
+  @ExchangeableObjectProperty(
+    serializer: Util.serializeTest,
+    deserializer: Util.deserializeTest
+  )
+  int test = 0;
+
+  DateTime? validNotAfterDate;
+
+  TestClass_({required String asd, this.test1 = "asdasd", required this.test2,
+    this.actionModeMenuItem = const [ActionModeMenuItem_.MENU_ITEM_NONE]}) : super(asd: asd);
+
+}
+
+@ExchangeableObject()
+class TestClass3_ {
+  String asd;
+
+  Function? onLoad;
+  TestClass3_({required this.asd});
+}
+
+///Class that represents the navigation request used by the [WebView.onCreateWindow] event.
+@ExchangeableObject()
+class CreateWindowAction_ extends NavigationAction_ {
+  ///The window id. Used by [WebView] to create a new WebView.
+  int windowId;
+
+  ///Use [isDialog] instead.
+  @Deprecated("Use isDialog instead")
+  bool? androidIsDialog;
+
+  ///Indicates if the new window should be a dialog, rather than a full-size window.
+  @SupportedPlatforms(
+      platforms: [
+        AndroidPlatform()
+      ]
+  )
+  bool? isDialog;
+
+  CreateWindowAction_(
+      {required this.windowId,
+        @Deprecated('Use isDialog instead')
+        this.androidIsDialog,
+        this.isDialog,
+        required bool isForMainFrame,
+        @Deprecated('Use hasGesture instead')
+        bool? androidHasGesture,
+        @Deprecated('Use isRedirect instead')
+        bool? androidIsRedirect,
+        bool? hasGesture,
+        bool? isRedirect,
+        @Deprecated('Use navigationType instead')
+        // ignore: deprecated_member_use_from_same_package
+        TestClass3_? iosWKNavigationType,
+        TestClass3_? navigationType}) : super(
+      isForMainFrame: isForMainFrame,
+    hasGesture: hasGesture,
+    isRedirect: isRedirect,
+    navigationType: navigationType
+  );
+}
+
+///An object that contains information about an action that causes navigation to occur.
+@ExchangeableObject()
+class NavigationAction_ {
+  ///Indicates whether the request was made for the main frame.
+  ///
+  ///**NOTE for Android**: If the request is associated to the [WebView.onCreateWindow] event, this is always `true`.
+  ///Also, on Android < 21, this is always `true`.
+  bool isForMainFrame;
+
+  ///Use [hasGesture] instead.
+  @Deprecated('Use hasGesture instead')
+  bool? androidHasGesture;
+
+  ///Gets whether a gesture (such as a click) was associated with the request.
+  ///For security reasons in certain situations this method may return `false` even though
+  ///the sequence of events which caused the request to be created was initiated by a user
+  ///gesture.
+  @SupportedPlatforms(
+      platforms: [
+        AndroidPlatform(
+            available: "21",
+            apiName: "WebResourceRequest.hasGesture",
+            apiUrl: "https://developer.android.com/reference/android/webkit/WebResourceRequest#hasGesture()",
+            note: "On Android < 21, this is always `false`"
+        )
+      ]
+  )
+  bool? hasGesture;
+
+  ///Use [isRedirect] instead.
+  @Deprecated('Use isRedirect instead')
+  bool? androidIsRedirect;
+
+  ///Gets whether the request was a result of a server-side redirect.
+  ///
+  ///**NOTE**: If the request is associated to the [WebView.onCreateWindow] event, this is always `false`.
+  ///Also, on Android < 21, this is always `false`.
+  @SupportedPlatforms(
+      platforms: [
+        AndroidPlatform(
+            available: "21",
+            apiName: "WebResourceRequest.isRedirect",
+            apiUrl: "https://developer.android.com/reference/android/webkit/WebResourceRequest#isRedirect()"
+        )
+      ]
+  )
+  bool? isRedirect;
+
+  ///Use [navigationType] instead.
+  @Deprecated("Use navigationType instead")
+  TestClass3_? iosWKNavigationType;
+
+  ///The type of action triggering the navigation.
+  ///
+  ///**NOTE**: available only on iOS.
+  TestClass3_? navigationType;
+
+  ///A value indicating whether the web content used a download attribute to indicate that this should be downloaded.
+  ///
+  ///**NOTE**: available only on iOS.
+  bool? shouldPerformDownload;
+
+  NavigationAction_(
+      {required this.isForMainFrame,
+        @Deprecated('Use hasGesture instead') this.androidHasGesture,
+        this.hasGesture,
+        @Deprecated('Use isRedirect instead') this.androidIsRedirect,
+        this.isRedirect,
+        @Deprecated("Use navigationType instead") this.iosWKNavigationType,
+        this.navigationType,
+        this.shouldPerformDownload});
+}
+
+class Util {
+  static String serializeTest(int source) {
+    return source.toString();
+  }
+
+  static int deserializeTest(String source) {
+    return int.parse(source);
+  }
+}

dev_packages/test_gen/lib/src/types/test_enum.dart

@@ -0,0 +1,160 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+import 'package:flutter/foundation.dart';
+
+part 'test_enum.g.dart';
+
+typedef myInt = int;
+
+///Docs
+@ExchangeableEnum(
+    bitwiseOrOperator: true
+)
+@EnumSupportedPlatforms(platforms: [
+  EnumAndroidPlatform(
+      apiName: "TestClass",
+      available: "24",
+      note: "[test1] is always `null`."
+  ),
+  EnumIOSPlatform(
+      apiName: "TestClass",
+      available: "15.0",
+      note: "[test2] is always `null`."
+  ),
+  EnumWebPlatform(),
+])
+class ActionModeMenuItem_ {
+  final int _value;
+  const ActionModeMenuItem_._internal(this._value);
+
+  ///No menu items should be disabled.
+  static const MENU_ITEM_NONE = const ActionModeMenuItem_._internal(0);
+
+  ///Disable menu item "Share".
+  static const MENU_ITEM_SHARE = const ActionModeMenuItem_._internal(1);
+
+  ///Disable menu item "Web Search".
+  static const MENU_ITEM_WEB_SEARCH = const ActionModeMenuItem_._internal(2);
+
+  ///Disable all the action mode menu items for text processing.
+  @EnumSupportedPlatforms(platforms: [
+    EnumAndroidPlatform(
+        apiName: "TestClass",
+        available: "24",
+        note: "[test1] is always `null`."
+    ),
+    EnumIOSPlatform(
+        apiName: "TestClass",
+        available: "15.0",
+        note: "[test2] is always `null`."
+    ),
+    EnumWebPlatform(),
+  ])
+  static const MENU_ITEM_PROCESS_TEXT = const ActionModeMenuItem_._internal(4);
+}
+
+
+typedef myString = String;
+
+@ExchangeableEnum()
+///Class that represents a type of resource used to ask user's permission.
+class PermissionResourceType_ {
+  final String _value;
+  final dynamic _nativeValue = null;
+  const PermissionResourceType_._internal(this._value);
+
+  ///Resource belongs to audio capture device, like microphone.
+  @EnumSupportedPlatforms(platforms: [
+    EnumAndroidPlatform(
+        apiName: "PermissionRequest.RESOURCE_AUDIO_CAPTURE",
+        apiUrl: "https://developer.android.com/reference/android/webkit/PermissionRequest#RESOURCE_AUDIO_CAPTURE",
+        value: 'android.webkit.resource.AUDIO_CAPTURE'
+    ),
+    EnumIOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.microphone",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/microphone",
+        value: 1
+    ),
+    EnumMacOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.microphone",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/microphone",
+        value: 1
+    ),
+  ])
+  static const MICROPHONE = PermissionResourceType_._internal('MICROPHONE');
+
+  ///Resource will allow sysex messages to be sent to or received from MIDI devices.
+  ///These messages are privileged operations, e.g. modifying sound libraries and sampling data, or even updating the MIDI device's firmware.
+  ///Permission may be requested for this resource in API levels 21 and above, if the Android device has been updated to WebView 45 or above.
+  @EnumSupportedPlatforms(platforms: [
+    EnumAndroidPlatform(
+        apiName: "PermissionRequest.RESOURCE_MIDI_SYSEX",
+        apiUrl: "https://developer.android.com/reference/android/webkit/PermissionRequest#RESOURCE_MIDI_SYSEX",
+        value: 'android.webkit.resource.RESOURCE_MIDI_SYSEX'
+    )
+  ])
+  static const MIDI_SYSEX = PermissionResourceType_._internal('MIDI_SYSEX');
+
+  ///Resource belongs to protected media identifier. After the user grants this resource, the origin can use EME APIs to generate the license requests.
+  @EnumSupportedPlatforms(platforms: [
+    EnumAndroidPlatform(
+        apiName: "PermissionRequest.RESOURCE_PROTECTED_MEDIA_ID",
+        apiUrl: "https://developer.android.com/reference/android/webkit/PermissionRequest#RESOURCE_PROTECTED_MEDIA_ID",
+        value: 'android.webkit.resource.PROTECTED_MEDIA_ID'
+    )
+  ])
+  static const PROTECTED_MEDIA_ID = PermissionResourceType_._internal('PROTECTED_MEDIA_ID');
+
+  ///Resource belongs to video capture device, like camera.
+  @EnumSupportedPlatforms(platforms: [
+    EnumAndroidPlatform(
+        apiName: "PermissionRequest.RESOURCE_VIDEO_CAPTURE",
+        apiUrl: "https://developer.android.com/reference/android/webkit/PermissionRequest#RESOURCE_VIDEO_CAPTURE",
+        value: 'android.webkit.resource.VIDEO_CAPTURE'
+    ),
+    EnumIOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.camera",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/camera",
+        value: 0
+    ),
+    EnumMacOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.camera",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/camera",
+        value: 0
+    ),
+  ])
+  static const CAMERA = PermissionResourceType_._internal('CAMERA');
+
+  ///A media device or devices that can capture audio and video.
+  @EnumSupportedPlatforms(platforms: [
+    EnumIOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.cameraAndMicrophone",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/cameraandmicrophone",
+        value: 2
+    ),
+    EnumMacOSPlatform(
+        available: "15.0",
+        apiName: "WKMediaCaptureType.cameraAndMicrophone",
+        apiUrl: "https://developer.apple.com/documentation/webkit/wkmediacapturetype/cameraandmicrophone",
+        value: 2
+    ),
+  ])
+  static const CAMERA_AND_MICROPHONE = PermissionResourceType_._internal('CAMERA_AND_MICROPHONE');
+
+  ///Resource belongs to the device’s orientation and motion.
+  @EnumSupportedPlatforms(platforms: [
+    EnumIOSPlatform(
+        available: "15.0",
+        value: 'deviceOrientationAndMotion'
+    ),
+    EnumMacOSPlatform(
+        available: "15.0",
+        value: 'deviceOrientationAndMotion'
+    ),
+  ])
+  static const DEVICE_ORIENTATION_AND_MOTION = PermissionResourceType_._internal('DEVICE_ORIENTATION_AND_MOTION');
+}

dev_packages/test_gen/lib/test_gen.dart

@@ -0,0 +1,10 @@
+library test_gen;
+
+import 'package:test_gen/src/types/test_class.dart';
+import 'package:test_gen/src/test/test_class_2.dart';
+import 'package:test_gen/src/types/test_enum.dart';
+
+void main() {
+  TestClass a = TestClass(test1: "test1", test2: TestClass2(test1: "test2"), actionModeMenuItem: ActionModeMenuItem.MENU_ITEM_NONE);
+  a.toMap();
+}

dev_packages/test_gen/pubspec.lock

@@ -0,0 +1,415 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "49.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.3.1"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.9.0"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.3.1"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
+  build_resolvers:
+    dependency: transitive
+    description:
+      name: build_resolvers
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.10"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
+  build_runner_core:
+    dependency: transitive
+    description:
+      name: build_runner_core
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "7.2.4"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.4.1"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.3.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.16.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.4"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.4"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_inappwebview_internal_annotations:
+    dependency: "direct main"
+    description:
+      path: "../flutter_inappwebview_internal_annotations"
+      relative: true
+    source: path
+    version: "1.0.0"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
+  generators:
+    dependency: "direct dev"
+    description:
+      path: "../generators"
+      relative: true
+    source: path
+    version: "1.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.0.1"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.6.4"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.7.0"
+  lints:
+    dependency: "direct dev"
+    description:
+      name: lints
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.12.12"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.5"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.2"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.0"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.5"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.9.1"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.1"
+  timing:
+    dependency: transitive
+    description:
+      name: timing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.2"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.1"
+sdks:
+  dart: ">=2.17.0 <3.0.0"
+  flutter: ">=2.5.0"

dev_packages/test_gen/pubspec.yaml

@@ -0,0 +1,20 @@
+name: test_gen
+version: 1.0.0
+
+publish_to: none
+
+environment:
+  sdk: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  flutter_inappwebview_internal_annotations:
+    path: ../flutter_inappwebview_internal_annotations/
+
+dev_dependencies:
+  build_runner: ^2.2.1
+  generators:
+    path: ../generators/
+  lints: ^1.0.1

example/integration_test/in_app_webview/initial_url_request.dart

@@ -17,36 +17,6 @@ void initialUrlRequest() {
         ].contains(defaultTargetPlatform);
 
   group('initial url request', () {
-    final shouldSkipTest1 = kIsWeb
-        ? false
-        : ![
-            TargetPlatform.android,
-            TargetPlatform.iOS,
-            TargetPlatform.macOS,
-          ].contains(defaultTargetPlatform);
-
-    testWidgets('basic', (WidgetTester tester) async {
-      final Completer controllerCompleter = Completer<InAppWebViewController>();
-      await tester.pumpWidget(
-        Directionality(
-          textDirection: TextDirection.ltr,
-          child: InAppWebView(
-            key: GlobalKey(),
-            initialUrlRequest: URLRequest(url: TEST_CROSS_PLATFORM_URL_1),
-            onWebViewCreated: (controller) {
-              controllerCompleter.complete(controller);
-            },
-          ),
-        ),
-      );
-
-      final InAppWebViewController controller =
-          await controllerCompleter.future;
-      final String? currentUrl = (await controller.getUrl())?.toString();
-
-      expect(currentUrl, TEST_CROSS_PLATFORM_URL_1.toString());
-    }, skip: shouldSkipTest1);
-
     final shouldSkipTest2 = kIsWeb
         ? true
         : ![
@@ -56,7 +26,9 @@ void initialUrlRequest() {
 
     testWidgets('launches with allowsBackForwardNavigationGestures true',
         (WidgetTester tester) async {
+      final Completer<void> pageLoaded = Completer<void>();
       final Completer controllerCompleter = Completer<InAppWebViewController>();
+
       await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
@@ -71,14 +43,54 @@ void initialUrlRequest() {
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
               },
+              onLoadStop: (controller, url) {
+                pageLoaded.complete();
+              },
             ),
           ),
         ),
       );
+      await pageLoaded.future;
       final InAppWebViewController controller =
           await controllerCompleter.future;
       final String? currentUrl = (await controller.getUrl())?.toString();
       expect(currentUrl, TEST_URL_1.toString());
     }, skip: shouldSkipTest2);
+
+    final shouldSkipTest1 = kIsWeb
+        ? false
+        : ![
+      TargetPlatform.android,
+      TargetPlatform.iOS,
+      TargetPlatform.macOS,
+    ].contains(defaultTargetPlatform);
+
+    testWidgets('basic', (WidgetTester tester) async {
+      final Completer<void> pageLoaded = Completer<void>();
+      final Completer controllerCompleter = Completer<InAppWebViewController>();
+
+      await tester.pumpWidget(
+        Directionality(
+          textDirection: TextDirection.ltr,
+          child: InAppWebView(
+            key: GlobalKey(),
+            initialUrlRequest: URLRequest(url: TEST_CROSS_PLATFORM_URL_1),
+            onWebViewCreated: (controller) {
+              controllerCompleter.complete(controller);
+            },
+            onLoadStop: (controller, url) {
+              pageLoaded.complete();
+            },
+          ),
+        ),
+      );
+
+      await pageLoaded.future;
+      final InAppWebViewController controller =
+      await controllerCompleter.future;
+      final String? currentUrl = (await controller.getUrl())?.toString();
+
+      expect(currentUrl, TEST_CROSS_PLATFORM_URL_1.toString());
+    }, skip: shouldSkipTest1);
   }, skip: shouldSkip);
 }

example/integration_test/in_app_webview/load_url.dart

@@ -19,8 +19,8 @@ void loadUrl() {
 
   testWidgets('loadUrl', (WidgetTester tester) async {
     final Completer controllerCompleter = Completer<InAppWebViewController>();
-    final StreamController<String> pageLoads =
-    StreamController<String>.broadcast();
+    final Completer<String> firstUrlLoad = Completer<String>();
+    final Completer<String> loadedUrl = Completer<String>();
 
     await tester.pumpWidget(
       Directionality(
@@ -33,21 +33,21 @@ void loadUrl() {
             controllerCompleter.complete(controller);
           },
           onLoadStop: (controller, url) {
-            pageLoads.add(url!.toString());
+            if (url.toString() == initialUrl.toString() && !firstUrlLoad.isCompleted) {
+              firstUrlLoad.complete(url.toString());
+            } else if (url.toString() == TEST_CROSS_PLATFORM_URL_1.toString() && !loadedUrl.isCompleted) {
+              loadedUrl.complete(url.toString());
+            }
           },
         ),
       ),
     );
     final InAppWebViewController controller =
     await controllerCompleter.future;
-    var url = await pageLoads.stream.first;
-    expect(url, initialUrl.toString());
+    expect(await firstUrlLoad.future, initialUrl.toString());
 
     await controller.loadUrl(
         urlRequest: URLRequest(url: TEST_CROSS_PLATFORM_URL_1));
-    url = await pageLoads.stream.first;
-    expect(url, TEST_CROSS_PLATFORM_URL_1.toString());
-
-    pageLoads.close();
+    expect(await loadedUrl.future, TEST_CROSS_PLATFORM_URL_1.toString());
   }, skip: shouldSkip);
 }

example/integration_test/in_app_webview/on_progress_changed.dart

@@ -28,7 +28,7 @@ void onProgressChanged() {
             clearCache: true,
           ),
           onProgressChanged: (controller, progress) {
-            if (progress == 100) {
+            if (progress == 100 && !onProgressChangedCompleter.isCompleted) {
               onProgressChangedCompleter.complete();
             }
           },

example/integration_test/in_app_webview/on_title_changed.dart

@@ -33,7 +33,9 @@ void onTitleChanged() {
             controllerCompleter.complete(controller);
           },
           onLoadStop: (controller, url) {
-            pageLoaded.complete();
+            if (!pageLoaded.isCompleted) {
+              pageLoaded.complete();
+            }
           },
           onTitleChanged: (controller, title) {
             if (title == "title test") {

example/integration_test/in_app_webview/on_update_visited_history.dart

@@ -20,8 +20,8 @@ void onUpdateVisitedHistory() {
 
   testWidgets('onUpdateVisitedHistory', (WidgetTester tester) async {
     final Completer controllerCompleter = Completer<InAppWebViewController>();
-    final Completer<void> firstPushCompleter = Completer<void>();
-    final Completer<void> secondPushCompleter = Completer<void>();
+    final Completer<String> firstPushCompleter = Completer<String>();
+    final Completer<String> secondPushCompleter = Completer<String>();
     final Completer<void> pageLoaded = Completer<void>();
 
     await tester.pumpWidget(
@@ -39,9 +39,9 @@ void onUpdateVisitedHistory() {
           },
           onUpdateVisitedHistory: (controller, url, androidIsReload) async {
             if (url!.toString().endsWith("second-push")) {
-              secondPushCompleter.complete();
+              secondPushCompleter.complete(url.toString());
             } else if (url.toString().endsWith("first-push")) {
-              firstPushCompleter.complete();
+              firstPushCompleter.complete(url.toString());
             }
           },
         ),
@@ -63,12 +63,12 @@ setTimeout(function() {
 }, 500);
 """);
 
-    await firstPushCompleter.future;
-    expect((await controller.getUrl())?.toString(),
+    var firstPushUrl = await firstPushCompleter.future;
+    expect(firstPushUrl,
         '${!kIsWeb ? TEST_CROSS_PLATFORM_URL_1 : TEST_WEB_PLATFORM_BASE_URL}first-push');
 
-    await secondPushCompleter.future;
-    expect((await controller.getUrl())?.toString(),
+    var secondPushUrl = await secondPushCompleter.future;
+    expect(secondPushUrl,
         '${!kIsWeb ? TEST_CROSS_PLATFORM_URL_1 : TEST_WEB_PLATFORM_BASE_URL}second-push');
   }, skip: shouldSkip);
 }

example/integration_test/in_app_webview/programmatic_zoom_scale.dart

@@ -68,7 +68,9 @@ void programmaticZoomScale() {
               controllerCompleter.complete(controller);
             },
             onLoadStop: (controller, url) {
-              pageLoaded.complete();
+              if (!pageLoaded.isCompleted) {
+                pageLoaded.complete();
+              }
             },
             onZoomScaleChanged: (controller, oldScale, newScale) {
               if (listenForScaleChange) {

example/integration_test/in_app_webview/reload.dart

@@ -40,7 +40,9 @@ void reload() {
               controllerCompleter.complete(controller);
             },
             onLoadStop: (controller, url) {
-              pageLoaded.complete();
+              if (!pageLoaded.isCompleted) {
+                pageLoaded.complete();
+              }
             },
           ),
         ),

example/integration_test/webview_flutter_test.dart

@@ -18,6 +18,15 @@ void main() {
     InAppWebViewController.setWebContentsDebuggingEnabled(true);
   }
 
+  WebView.debugLoggingSettings.usePrint = true;
+  WebView.debugLoggingSettings.maxLogMessageLength = 7000;
+  InAppBrowser.debugLoggingSettings.usePrint = true;
+  InAppBrowser.debugLoggingSettings.maxLogMessageLength = 7000;
+  ChromeSafariBrowser.debugLoggingSettings.usePrint = true;
+  ChromeSafariBrowser.debugLoggingSettings.maxLogMessageLength = 7000;
+  WebAuthenticationSession.debugLoggingSettings.usePrint = true;
+  WebAuthenticationSession.debugLoggingSettings.maxLogMessageLength = 7000;
+
   in_app_webview_tests.main();
   service_worker_controller_tests.main();
   proxy_controller_tests.main();

example/ios/Flutter/flutter_export_environment.sh

@@ -3,11 +3,11 @@
 export "FLUTTER_ROOT=/Users/lorenzopichilli/fvm/versions/2.10.4"
 export "FLUTTER_APPLICATION_PATH=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example"
 export "COCOAPODS_PARALLEL_CODE_SIGN=true"
-export "FLUTTER_TARGET=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example/lib/main.dart"
+export "FLUTTER_TARGET=integration_test/webview_flutter_test.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
-export "DART_DEFINES=Zmx1dHRlci5pbnNwZWN0b3Iuc3RydWN0dXJlZEVycm9ycz10cnVl,RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ=="
+export "DART_DEFINES=RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ=="
 export "DART_OBFUSCATION=false"
 export "TRACK_WIDGET_CREATION=true"
 export "TREE_SHAKE_ICONS=false"

example/test_assets/in_app_webview_on_load_resource_custom_scheme_test.html

@@ -10,14 +10,17 @@
         <div class="cover-container d-flex w-100 h-100 p-3 mx-auto flex-column">
             <main role="main" class="inner cover">
                 <h1 class="cover-heading">InAppWebViewOnLoadResourceCustomSchemeTest</h1>
-                <img id="image" src="my-special-custom-scheme://images/flutter-logo.svg" alt="flutter logo">
+                <img id="image" alt="flutter logo">
             </main>
         </div>
     </body>
     <script>
         var image = document.querySelector("#image");
-        image.addEventListener('load', function() {
-            window.flutter_inappwebview.callHandler('imageLoaded');
+        window.addEventListener("flutterInAppWebViewPlatformReady", function(event) {
+            image.src = "my-special-custom-scheme://images/flutter-logo.svg";
+            image.addEventListener('load', function() {
+                window.flutter_inappwebview.callHandler('imageLoaded');
+            });
         });
     </script>
 </html>

ios/Classes/InAppBrowser/InAppBrowserWebViewController.swift

@@ -163,7 +163,7 @@ public class InAppBrowserWebViewController: UIViewController, InAppBrowserDelega
             }
         }
         else if let initialData = initialData {
-            let baseUrl = URL(string: initialBaseUrl!)!
+            let baseUrl = URL(string: initialBaseUrl ?? "about:blank")!
             var allowingReadAccessToURL: URL? = nil
             if let allowingReadAccessTo = webView?.settings?.allowingReadAccessTo, baseUrl.scheme == "file" {
                 allowingReadAccessToURL = URL(string: allowingReadAccessTo)

ios/Classes/InAppWebView/FlutterWebViewController.swift

@@ -95,7 +95,7 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView, Disposable
         let windowId = params["windowId"] as? Int64
         let initialUrlRequest = params["initialUrlRequest"] as? [String: Any?]
         let initialFile = params["initialFile"] as? String
-        let initialData = params["initialData"] as? [String: String]
+        let initialData = params["initialData"] as? [String: String?]
         
         if windowId == nil {
             if #available(iOS 11.0, *) {
@@ -131,7 +131,7 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView, Disposable
         }
     }
     
-    func load(initialUrlRequest: [String:Any?]?, initialFile: String?, initialData: [String: String]?) {
+    func load(initialUrlRequest: [String:Any?]?, initialFile: String?, initialData: [String: String?]?) {
         guard let webView = webView() else {
             return
         }
@@ -144,11 +144,9 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView, Disposable
                 dump(error)
             }
         }
-        else if let initialData = initialData {
-            let data = initialData["data"]!
-            let mimeType = initialData["mimeType"]!
-            let encoding = initialData["encoding"]!
-            let baseUrl = URL(string: initialData["baseUrl"]!)!
+        else if let initialData = initialData, let data = initialData["data"]!,
+                let mimeType = initialData["mimeType"]!, let encoding = initialData["encoding"]!,
+                let baseUrl = URL(string: initialData["baseUrl"]! ?? "about:blank") {
             var allowingReadAccessToURL: URL? = nil
             if let allowingReadAccessTo = webView.settings?.allowingReadAccessTo, baseUrl.scheme == "file" {
                 allowingReadAccessToURL = URL(string: allowingReadAccessTo)
@@ -156,7 +154,11 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView, Disposable
                     allowingReadAccessToURL = nil
                 }
             }
-            webView.loadData(data: data, mimeType: mimeType, encoding: encoding, baseUrl: baseUrl, allowingReadAccessTo: allowingReadAccessToURL)
+            webView.loadData(data: data,
+                             mimeType: mimeType,
+                             encoding: encoding,
+                             baseUrl: baseUrl,
+                             allowingReadAccessTo: allowingReadAccessToURL)
         }
         else if let initialUrlRequest = initialUrlRequest {
             let urlRequest = URLRequest.init(fromPluginMap: initialUrlRequest)

ios/Classes/InAppWebView/InAppWebView.swift

@@ -1527,7 +1527,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate,
         }
         
         var result: [String: Any] = [:]
-        result["history"] = history
+        result["list"] = history
         result["currentIndex"] = currentIndex
         
         return result;
@@ -1818,7 +1818,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate,
         }
         
         let webResourceRequest = WebResourceRequest(url: urlError, headers: nil)
-        let webResourceError = WebResourceError(errorCode: errorCode, errorDescription: errorDescription)
+        let webResourceError = WebResourceError(type: errorCode, errorDescription: errorDescription)
         
         channelDelegate?.onReceivedError(request: webResourceRequest, error: webResourceError)
         

ios/Classes/InAppWebView/WebViewChannelDelegate.swift

@@ -760,7 +760,7 @@ public class WebViewChannelDelegate : ChannelDelegate {
             "defaultValue": defaultValue,
             "isMainFrame": isMainFrame
         ]
-        channel?.invokeMethod("onJsConfirm", arguments: arguments, callback: callback)
+        channel?.invokeMethod("onJsPrompt", arguments: arguments, callback: callback)
     }
     
     public class CreateWindowCallback : BaseCallbackResult<Bool> {
@@ -828,7 +828,7 @@ public class WebViewChannelDelegate : ChannelDelegate {
         override init() {
             super.init()
             self.decodeResult = { (obj: Any?) in
-                if let obj = obj as? [String: Any?], let action = obj["action"] as? Int {
+                if let action = obj as? Int {
                     return WKNavigationActionPolicy.init(rawValue: action) ?? WKNavigationActionPolicy.cancel
                 }
                 return WKNavigationActionPolicy.cancel
@@ -987,7 +987,7 @@ public class WebViewChannelDelegate : ChannelDelegate {
         override init() {
             super.init()
             self.decodeResult = { (obj: Any?) in
-                if let obj = obj as? [String: Any?], let action = obj["action"] as? Int {
+                if let action = obj as? Int {
                     return WKNavigationResponsePolicy.init(rawValue: action) ?? WKNavigationResponsePolicy.cancel
                 }
                 return WKNavigationResponsePolicy.cancel
@@ -1007,7 +1007,7 @@ public class WebViewChannelDelegate : ChannelDelegate {
         override init() {
             super.init()
             self.decodeResult = { (obj: Any?) in
-                if let obj = obj as? [String: Any?], let action = obj["action"] as? Int {
+                if let action = obj as? Int {
                     return action == 1
                 }
                 return false

ios/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift

@@ -197,7 +197,7 @@ let INTERCEPT_AJAX_REQUEST_JS_SOURCE = """
           };
           window.\(JAVASCRIPT_BRIDGE_NAME).callHandler('shouldInterceptAjaxRequest', ajaxRequest).then(function(result) {
             if (result != null) {
-              switch (result.action) {
+              switch (result) {
                 case 0:
                   self.abort();
                   return;

ios/Classes/Types/PermissionResponse.swift

@@ -8,10 +8,10 @@
 import Foundation
 
 public class PermissionResponse : NSObject {
-    var resources: [String]
+    var resources: [Any]
     var action: Int?
     
-    public init(resources: [String], action: Int? = nil) {
+    public init(resources: [Any], action: Int? = nil) {
         self.resources = resources
         self.action = action
     }
@@ -20,7 +20,7 @@ public class PermissionResponse : NSObject {
         guard let map = map else {
             return nil
         }
-        let resources = map["resources"] as! [String]
+        let resources = map["resources"] as! [Any]
         let action = map["action"] as? Int
         return PermissionResponse(resources: resources, action: action)
     }

ios/Classes/Types/URLProtectionSpace.swift

@@ -57,7 +57,6 @@ extension URLProtectionSpace {
             "authenticationMethod": authenticationMethod,
             "distinguishedNames": distinguishedNames,
             "receivesCredentialSecurely": receivesCredentialSecurely,
-            "isProxy": isProxy(),
             "proxyType": proxyType
         ]
     }

ios/Classes/Types/WebResourceError.swift

@@ -8,17 +8,17 @@
 import Foundation
 
 public class WebResourceError: NSObject {
-    var errorCode: Int
+    var type: Int
     var errorDescription: String
     
-    public init(errorCode: Int, errorDescription: String) {
-        self.errorCode = errorCode
+    public init(type: Int, errorDescription: String) {
+        self.type = type
         self.errorDescription = errorDescription
     }
     
     public func toMap () -> [String:Any?] {
         return [
-            "errorCode": errorCode,
+            "type": type,
             "description": errorDescription
         ]
     }

lib/src/android/main.dart

@@ -1,3 +1,3 @@
 export 'service_worker_controller.dart';
-export 'webview_feature.dart';
+export 'webview_feature.dart' show WebViewFeature, AndroidWebViewFeature;
 export 'proxy_controller.dart';

lib/src/android/proxy_controller.dart

@@ -27,7 +27,14 @@ class ProxyController {
   }
 
   static ProxyController _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = ProxyController();
     return _instance!;
   }

lib/src/android/service_worker_controller.dart

@@ -38,7 +38,14 @@ class ServiceWorkerController {
   }
 
   static ServiceWorkerController _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = ServiceWorkerController();
     return _instance!;
   }
@@ -107,7 +114,7 @@ class ServiceWorkerController {
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getCacheMode()
   static Future<CacheMode?> getCacheMode() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return CacheMode.fromValue(
+    return CacheMode.fromNativeValue(
         await _channel.invokeMethod('getCacheMode', args));
   }
 
@@ -155,7 +162,7 @@ class ServiceWorkerController {
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setCacheMode(int)
   static Future<void> setCacheMode(CacheMode mode) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent("mode", () => mode.toValue());
+    args.putIfAbsent("mode", () => mode.toNativeValue());
     await _channel.invokeMethod('setCacheMode', args);
   }
 }
@@ -222,7 +229,14 @@ class AndroidServiceWorkerController {
   }
 
   static AndroidServiceWorkerController _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = AndroidServiceWorkerController();
     return _instance!;
   }
@@ -293,7 +307,7 @@ class AndroidServiceWorkerController {
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getCacheMode()
   static Future<AndroidCacheMode?> getCacheMode() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return AndroidCacheMode.fromValue(
+    return AndroidCacheMode.fromNativeValue(
         await _channel.invokeMethod('getCacheMode', args));
   }
 
@@ -341,7 +355,7 @@ class AndroidServiceWorkerController {
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setCacheMode(int)
   static Future<void> setCacheMode(AndroidCacheMode mode) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent("mode", () => mode.toValue());
+    args.putIfAbsent("mode", () => mode.toNativeValue());
     await _channel.invokeMethod('setCacheMode', args);
   }
 }

lib/src/android/webview_feature.dart

@@ -1,257 +1,200 @@
 import 'dart:async';
 import 'package:flutter/services.dart';
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
 import '../in_app_webview/in_app_webview_controller.dart';
 import '../in_app_webview/in_app_webview_settings.dart';
 import 'proxy_controller.dart';
 import 'service_worker_controller.dart';
 import '../web_message/main.dart';
 
+part 'webview_feature.g.dart';
+
 ///Class that represents an Android-specific utility class for checking which WebView Support Library features are supported on the device.
-class WebViewFeature {
+@ExchangeableEnum()
+class WebViewFeature_ {
+  @ExchangeableEnumCustomValue()
   static const MethodChannel _channel = const MethodChannel(
       'com.pichillilorenzo/flutter_inappwebview_webviewfeature');
 
+  // ignore: unused_field
   final String _value;
+  const WebViewFeature_._internal(this._value);
 
-  const WebViewFeature._internal(this._value);
-
-  static final Set<WebViewFeature> values = [
-    WebViewFeature.CREATE_WEB_MESSAGE_CHANNEL,
-    WebViewFeature.DISABLED_ACTION_MODE_MENU_ITEMS,
-    WebViewFeature.FORCE_DARK,
-    WebViewFeature.FORCE_DARK_STRATEGY,
-    WebViewFeature.GET_WEB_CHROME_CLIENT,
-    WebViewFeature.GET_WEB_VIEW_CLIENT,
-    WebViewFeature.GET_WEB_VIEW_RENDERER,
-    WebViewFeature.MULTI_PROCESS,
-    WebViewFeature.OFF_SCREEN_PRERASTER,
-    WebViewFeature.POST_WEB_MESSAGE,
-    WebViewFeature.PROXY_OVERRIDE,
-    WebViewFeature.RECEIVE_HTTP_ERROR,
-    WebViewFeature.RECEIVE_WEB_RESOURCE_ERROR,
-    WebViewFeature.SAFE_BROWSING_ALLOWLIST,
-    WebViewFeature.SAFE_BROWSING_ENABLE,
-    WebViewFeature.SAFE_BROWSING_HIT,
-    WebViewFeature.SAFE_BROWSING_PRIVACY_POLICY_URL,
-    WebViewFeature.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
-    WebViewFeature.SAFE_BROWSING_RESPONSE_PROCEED,
-    WebViewFeature.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL,
-    WebViewFeature.SERVICE_WORKER_BASIC_USAGE,
-    WebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS,
-    WebViewFeature.SERVICE_WORKER_CACHE_MODE,
-    WebViewFeature.SERVICE_WORKER_CONTENT_ACCESS,
-    WebViewFeature.SERVICE_WORKER_FILE_ACCESS,
-    WebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST,
-    WebViewFeature.SHOULD_OVERRIDE_WITH_REDIRECTS,
-    WebViewFeature.START_SAFE_BROWSING,
-    WebViewFeature.TRACING_CONTROLLER_BASIC_USAGE,
-    WebViewFeature.VISUAL_STATE_CALLBACK,
-    WebViewFeature.WEB_MESSAGE_CALLBACK_ON_MESSAGE,
-    WebViewFeature.WEB_MESSAGE_LISTENER,
-    WebViewFeature.WEB_MESSAGE_PORT_CLOSE,
-    WebViewFeature.WEB_MESSAGE_PORT_POST_MESSAGE,
-    WebViewFeature.WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK,
-    WebViewFeature.WEB_RESOURCE_ERROR_GET_CODE,
-    WebViewFeature.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
-    WebViewFeature.WEB_RESOURCE_REQUEST_IS_REDIRECT,
-    WebViewFeature.WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE,
-    WebViewFeature.WEB_VIEW_RENDERER_TERMINATE,
-  ].toSet();
-
-  static WebViewFeature? fromValue(String? value) {
-    if (value != null) {
-      try {
-        return WebViewFeature.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  String toValue() => _value;
-
-  @override
-  String toString() => _value;
+  @ExchangeableObjectMethod(ignore: true)
+  String toNativeValue() => _value;
 
   ///This feature covers [InAppWebViewController.createWebMessageChannel].
   static const CREATE_WEB_MESSAGE_CHANNEL =
-      const WebViewFeature._internal("CREATE_WEB_MESSAGE_CHANNEL");
+      const WebViewFeature_._internal("CREATE_WEB_MESSAGE_CHANNEL");
 
   ///This feature covers [InAppWebViewSettings.disabledActionModeMenuItems].
   static const DISABLED_ACTION_MODE_MENU_ITEMS =
-      const WebViewFeature._internal("DISABLED_ACTION_MODE_MENU_ITEMS");
+      const WebViewFeature_._internal("DISABLED_ACTION_MODE_MENU_ITEMS");
 
   ///This feature covers [InAppWebViewSettings.forceDark].
-  static const FORCE_DARK = const WebViewFeature._internal("FORCE_DARK");
+  static const FORCE_DARK = const WebViewFeature_._internal("FORCE_DARK");
 
   ///This feature covers [InAppWebViewSettings.forceDarkStrategy].
   static const FORCE_DARK_STRATEGY =
-      const WebViewFeature._internal("FORCE_DARK_STRATEGY");
+      const WebViewFeature_._internal("FORCE_DARK_STRATEGY");
 
   ///
   static const GET_WEB_CHROME_CLIENT =
-      const WebViewFeature._internal("GET_WEB_CHROME_CLIENT");
+      const WebViewFeature_._internal("GET_WEB_CHROME_CLIENT");
 
   ///
   static const GET_WEB_VIEW_CLIENT =
-      const WebViewFeature._internal("GET_WEB_VIEW_CLIENT");
+      const WebViewFeature_._internal("GET_WEB_VIEW_CLIENT");
 
   ///
   static const GET_WEB_VIEW_RENDERER =
-      const WebViewFeature._internal("GET_WEB_VIEW_RENDERER");
+      const WebViewFeature_._internal("GET_WEB_VIEW_RENDERER");
 
   ///
-  static const MULTI_PROCESS = const WebViewFeature._internal("MULTI_PROCESS");
+  static const MULTI_PROCESS = const WebViewFeature_._internal("MULTI_PROCESS");
 
   ///This feature covers [InAppWebViewSettings.offscreenPreRaster].
   static const OFF_SCREEN_PRERASTER =
-      const WebViewFeature._internal("OFF_SCREEN_PRERASTER");
+      const WebViewFeature_._internal("OFF_SCREEN_PRERASTER");
 
   ///This feature covers [InAppWebViewController.postWebMessage].
   static const POST_WEB_MESSAGE =
-      const WebViewFeature._internal("POST_WEB_MESSAGE");
+      const WebViewFeature_._internal("POST_WEB_MESSAGE");
 
   ///This feature covers [ProxyController.setProxyOverride] and [ProxyController.clearProxyOverride].
   static const PROXY_OVERRIDE =
-      const WebViewFeature._internal("PROXY_OVERRIDE");
+      const WebViewFeature_._internal("PROXY_OVERRIDE");
 
   ///
   static const RECEIVE_HTTP_ERROR =
-      const WebViewFeature._internal("RECEIVE_HTTP_ERROR");
+      const WebViewFeature_._internal("RECEIVE_HTTP_ERROR");
 
   ///
   static const RECEIVE_WEB_RESOURCE_ERROR =
-      const WebViewFeature._internal("RECEIVE_WEB_RESOURCE_ERROR");
+      const WebViewFeature_._internal("RECEIVE_WEB_RESOURCE_ERROR");
 
   ///This feature covers [InAppWebViewController.setSafeBrowsingAllowlist].
   static const SAFE_BROWSING_ALLOWLIST =
-      const WebViewFeature._internal("SAFE_BROWSING_ALLOWLIST");
+      const WebViewFeature_._internal("SAFE_BROWSING_ALLOWLIST");
 
   ///This feature covers [InAppWebViewSettings.safeBrowsingEnabled].
   static const SAFE_BROWSING_ENABLE =
-      const WebViewFeature._internal("SAFE_BROWSING_ENABLE");
+      const WebViewFeature_._internal("SAFE_BROWSING_ENABLE");
 
   ///
   static const SAFE_BROWSING_HIT =
-      const WebViewFeature._internal("SAFE_BROWSING_HIT");
+      const WebViewFeature_._internal("SAFE_BROWSING_HIT");
 
   ///This feature covers [InAppWebViewController.getSafeBrowsingPrivacyPolicyUrl].
   static const SAFE_BROWSING_PRIVACY_POLICY_URL =
-      const WebViewFeature._internal("SAFE_BROWSING_PRIVACY_POLICY_URL");
+      const WebViewFeature_._internal("SAFE_BROWSING_PRIVACY_POLICY_URL");
 
   ///
   static const SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY =
-      const WebViewFeature._internal("SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY");
+      const WebViewFeature_._internal("SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY");
 
   ///
   static const SAFE_BROWSING_RESPONSE_PROCEED =
-      const WebViewFeature._internal("SAFE_BROWSING_RESPONSE_PROCEED");
+      const WebViewFeature_._internal("SAFE_BROWSING_RESPONSE_PROCEED");
 
   ///
   static const SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL =
-      const WebViewFeature._internal(
+      const WebViewFeature_._internal(
           "SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL");
 
   ///Use [SAFE_BROWSING_ALLOWLIST] instead.
   @Deprecated('Use SAFE_BROWSING_ALLOWLIST instead')
   static const SAFE_BROWSING_WHITELIST =
-      const WebViewFeature._internal("SAFE_BROWSING_WHITELIST");
+      const WebViewFeature_._internal("SAFE_BROWSING_WHITELIST");
 
   ///This feature covers [ServiceWorkerController].
   static const SERVICE_WORKER_BASIC_USAGE =
-      const WebViewFeature._internal("SERVICE_WORKER_BASIC_USAGE");
+      const WebViewFeature_._internal("SERVICE_WORKER_BASIC_USAGE");
 
   ///This feature covers [ServiceWorkerController.setBlockNetworkLoads] and [ServiceWorkerController.getBlockNetworkLoads].
   static const SERVICE_WORKER_BLOCK_NETWORK_LOADS =
-      const WebViewFeature._internal("SERVICE_WORKER_BLOCK_NETWORK_LOADS");
+      const WebViewFeature_._internal("SERVICE_WORKER_BLOCK_NETWORK_LOADS");
 
   ///This feature covers [ServiceWorkerController.setCacheMode] and [ServiceWorkerController.getCacheMode].
   static const SERVICE_WORKER_CACHE_MODE =
-      const WebViewFeature._internal("SERVICE_WORKER_CACHE_MODE");
+      const WebViewFeature_._internal("SERVICE_WORKER_CACHE_MODE");
 
   ///This feature covers [ServiceWorkerController.setAllowContentAccess] and [ServiceWorkerController.getAllowContentAccess].
   static const SERVICE_WORKER_CONTENT_ACCESS =
-      const WebViewFeature._internal("SERVICE_WORKER_CONTENT_ACCESS");
+      const WebViewFeature_._internal("SERVICE_WORKER_CONTENT_ACCESS");
 
   ///This feature covers [ServiceWorkerController.setAllowFileAccess] and [ServiceWorkerController.getAllowFileAccess].
   static const SERVICE_WORKER_FILE_ACCESS =
-      const WebViewFeature._internal("SERVICE_WORKER_FILE_ACCESS");
+      const WebViewFeature_._internal("SERVICE_WORKER_FILE_ACCESS");
 
   ///This feature covers [ServiceWorkerClient.shouldInterceptRequest].
   static const SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST =
-      const WebViewFeature._internal("SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST");
+      const WebViewFeature_._internal("SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST");
 
   ///
   static const SHOULD_OVERRIDE_WITH_REDIRECTS =
-      const WebViewFeature._internal("SHOULD_OVERRIDE_WITH_REDIRECTS");
+      const WebViewFeature_._internal("SHOULD_OVERRIDE_WITH_REDIRECTS");
 
   ///This feature covers [InAppWebViewController.startSafeBrowsing].
   static const START_SAFE_BROWSING =
-      const WebViewFeature._internal("START_SAFE_BROWSING");
+      const WebViewFeature_._internal("START_SAFE_BROWSING");
 
   ///
   static const TRACING_CONTROLLER_BASIC_USAGE =
-      const WebViewFeature._internal("TRACING_CONTROLLER_BASIC_USAGE");
+      const WebViewFeature_._internal("TRACING_CONTROLLER_BASIC_USAGE");
 
   ///
   static const VISUAL_STATE_CALLBACK =
-      const WebViewFeature._internal("VISUAL_STATE_CALLBACK");
+      const WebViewFeature_._internal("VISUAL_STATE_CALLBACK");
 
   ///
   static const WEB_MESSAGE_CALLBACK_ON_MESSAGE =
-      const WebViewFeature._internal("WEB_MESSAGE_CALLBACK_ON_MESSAGE");
+      const WebViewFeature_._internal("WEB_MESSAGE_CALLBACK_ON_MESSAGE");
 
   ///This feature covers [WebMessageListener].
   static const WEB_MESSAGE_LISTENER =
-      const WebViewFeature._internal("WEB_MESSAGE_LISTENER");
+      const WebViewFeature_._internal("WEB_MESSAGE_LISTENER");
 
   ///
   static const WEB_MESSAGE_PORT_CLOSE =
-      const WebViewFeature._internal("WEB_MESSAGE_PORT_CLOSE");
+      const WebViewFeature_._internal("WEB_MESSAGE_PORT_CLOSE");
 
   ///
   static const WEB_MESSAGE_PORT_POST_MESSAGE =
-      const WebViewFeature._internal("WEB_MESSAGE_PORT_POST_MESSAGE");
+      const WebViewFeature_._internal("WEB_MESSAGE_PORT_POST_MESSAGE");
 
   ///
   static const WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK =
-      const WebViewFeature._internal("WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK");
+      const WebViewFeature_._internal("WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK");
 
   ///
   static const WEB_RESOURCE_ERROR_GET_CODE =
-      const WebViewFeature._internal("WEB_RESOURCE_ERROR_GET_CODE");
+      const WebViewFeature_._internal("WEB_RESOURCE_ERROR_GET_CODE");
 
   ///
   static const WEB_RESOURCE_ERROR_GET_DESCRIPTION =
-      const WebViewFeature._internal("WEB_RESOURCE_ERROR_GET_DESCRIPTION");
+      const WebViewFeature_._internal("WEB_RESOURCE_ERROR_GET_DESCRIPTION");
 
   ///
   static const WEB_RESOURCE_REQUEST_IS_REDIRECT =
-      const WebViewFeature._internal("WEB_RESOURCE_REQUEST_IS_REDIRECT");
+      const WebViewFeature_._internal("WEB_RESOURCE_REQUEST_IS_REDIRECT");
 
   ///
   static const WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE =
-      const WebViewFeature._internal("WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE");
+      const WebViewFeature_._internal("WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE");
 
   ///
   static const WEB_VIEW_RENDERER_TERMINATE =
-      const WebViewFeature._internal("WEB_VIEW_RENDERER_TERMINATE");
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+      const WebViewFeature_._internal("WEB_VIEW_RENDERER_TERMINATE");
 
   ///Return whether a feature is supported at run-time. On devices running Android version `Build.VERSION_CODES.LOLLIPOP` and higher,
   ///this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device,
   ///and the WebView APK on the device. If running on a device with a lower API level, this will always return `false`.
   ///
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewFeature#isFeatureSupported(java.lang.String)
-  static Future<bool> isFeatureSupported(WebViewFeature feature) async {
+  static Future<bool> isFeatureSupported(WebViewFeature_ feature) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent("feature", () => feature.toValue());
+    args.putIfAbsent("feature", () => feature.toNativeValue());
     return await _channel.invokeMethod('isFeatureSupported', args);
   }
 }
@@ -259,258 +202,198 @@ class WebViewFeature {
 ///Class that represents an Android-specific utility class for checking which WebView Support Library features are supported on the device.
 ///Use [WebViewFeature] instead.
 @Deprecated("Use WebViewFeature instead")
-class AndroidWebViewFeature {
+@ExchangeableEnum()
+class AndroidWebViewFeature_ {
+  @ExchangeableEnumCustomValue()
   static const MethodChannel _channel = const MethodChannel(
       'com.pichillilorenzo/flutter_inappwebview_webviewfeature');
 
+  // ignore: unused_field
   final String _value;
+  const AndroidWebViewFeature_._internal(this._value);
 
-  const AndroidWebViewFeature._internal(this._value);
-
-  static final Set<AndroidWebViewFeature> values = [
-    AndroidWebViewFeature.CREATE_WEB_MESSAGE_CHANNEL,
-    AndroidWebViewFeature.DISABLED_ACTION_MODE_MENU_ITEMS,
-    AndroidWebViewFeature.FORCE_DARK,
-    AndroidWebViewFeature.FORCE_DARK_STRATEGY,
-    AndroidWebViewFeature.GET_WEB_CHROME_CLIENT,
-    AndroidWebViewFeature.GET_WEB_VIEW_CLIENT,
-    AndroidWebViewFeature.GET_WEB_VIEW_RENDERER,
-    AndroidWebViewFeature.MULTI_PROCESS,
-    AndroidWebViewFeature.OFF_SCREEN_PRERASTER,
-    AndroidWebViewFeature.POST_WEB_MESSAGE,
-    AndroidWebViewFeature.PROXY_OVERRIDE,
-    AndroidWebViewFeature.RECEIVE_HTTP_ERROR,
-    AndroidWebViewFeature.RECEIVE_WEB_RESOURCE_ERROR,
-    AndroidWebViewFeature.SAFE_BROWSING_ALLOWLIST,
-    AndroidWebViewFeature.SAFE_BROWSING_ENABLE,
-    AndroidWebViewFeature.SAFE_BROWSING_HIT,
-    AndroidWebViewFeature.SAFE_BROWSING_PRIVACY_POLICY_URL,
-    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
-    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_PROCEED,
-    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL,
-    AndroidWebViewFeature.SERVICE_WORKER_BASIC_USAGE,
-    AndroidWebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS,
-    AndroidWebViewFeature.SERVICE_WORKER_CACHE_MODE,
-    AndroidWebViewFeature.SERVICE_WORKER_CONTENT_ACCESS,
-    AndroidWebViewFeature.SERVICE_WORKER_FILE_ACCESS,
-    AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST,
-    AndroidWebViewFeature.SHOULD_OVERRIDE_WITH_REDIRECTS,
-    AndroidWebViewFeature.START_SAFE_BROWSING,
-    AndroidWebViewFeature.TRACING_CONTROLLER_BASIC_USAGE,
-    AndroidWebViewFeature.VISUAL_STATE_CALLBACK,
-    AndroidWebViewFeature.WEB_MESSAGE_CALLBACK_ON_MESSAGE,
-    AndroidWebViewFeature.WEB_MESSAGE_LISTENER,
-    AndroidWebViewFeature.WEB_MESSAGE_PORT_CLOSE,
-    AndroidWebViewFeature.WEB_MESSAGE_PORT_POST_MESSAGE,
-    AndroidWebViewFeature.WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK,
-    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_CODE,
-    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
-    AndroidWebViewFeature.WEB_RESOURCE_REQUEST_IS_REDIRECT,
-    AndroidWebViewFeature.WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE,
-    AndroidWebViewFeature.WEB_VIEW_RENDERER_TERMINATE,
-  ].toSet();
-
-  static AndroidWebViewFeature? fromValue(String? value) {
-    if (value != null) {
-      try {
-        return AndroidWebViewFeature.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  String toValue() => _value;
-
-  @override
-  String toString() => _value;
+  @ExchangeableObjectMethod(ignore: true)
+  String toNativeValue() => _value;
 
   ///
   static const CREATE_WEB_MESSAGE_CHANNEL =
-      const AndroidWebViewFeature._internal("CREATE_WEB_MESSAGE_CHANNEL");
+      const AndroidWebViewFeature_._internal("CREATE_WEB_MESSAGE_CHANNEL");
 
   ///
   static const DISABLED_ACTION_MODE_MENU_ITEMS =
-      const AndroidWebViewFeature._internal("DISABLED_ACTION_MODE_MENU_ITEMS");
+      const AndroidWebViewFeature_._internal("DISABLED_ACTION_MODE_MENU_ITEMS");
 
   ///
-  static const FORCE_DARK = const AndroidWebViewFeature._internal("FORCE_DARK");
+  static const FORCE_DARK = const AndroidWebViewFeature_._internal("FORCE_DARK");
 
   ///
   static const FORCE_DARK_STRATEGY =
-      const AndroidWebViewFeature._internal("FORCE_DARK_STRATEGY");
+      const AndroidWebViewFeature_._internal("FORCE_DARK_STRATEGY");
 
   ///
   static const GET_WEB_CHROME_CLIENT =
-      const AndroidWebViewFeature._internal("GET_WEB_CHROME_CLIENT");
+      const AndroidWebViewFeature_._internal("GET_WEB_CHROME_CLIENT");
 
   ///
   static const GET_WEB_VIEW_CLIENT =
-      const AndroidWebViewFeature._internal("GET_WEB_VIEW_CLIENT");
+      const AndroidWebViewFeature_._internal("GET_WEB_VIEW_CLIENT");
 
   ///
   static const GET_WEB_VIEW_RENDERER =
-      const AndroidWebViewFeature._internal("GET_WEB_VIEW_RENDERER");
+      const AndroidWebViewFeature_._internal("GET_WEB_VIEW_RENDERER");
 
   ///
   static const MULTI_PROCESS =
-      const AndroidWebViewFeature._internal("MULTI_PROCESS");
+      const AndroidWebViewFeature_._internal("MULTI_PROCESS");
 
   ///
   static const OFF_SCREEN_PRERASTER =
-      const AndroidWebViewFeature._internal("OFF_SCREEN_PRERASTER");
+      const AndroidWebViewFeature_._internal("OFF_SCREEN_PRERASTER");
 
   ///
   static const POST_WEB_MESSAGE =
-      const AndroidWebViewFeature._internal("POST_WEB_MESSAGE");
+      const AndroidWebViewFeature_._internal("POST_WEB_MESSAGE");
 
   ///
   static const PROXY_OVERRIDE =
-      const AndroidWebViewFeature._internal("PROXY_OVERRIDE");
+      const AndroidWebViewFeature_._internal("PROXY_OVERRIDE");
 
   ///
   static const RECEIVE_HTTP_ERROR =
-      const AndroidWebViewFeature._internal("RECEIVE_HTTP_ERROR");
+      const AndroidWebViewFeature_._internal("RECEIVE_HTTP_ERROR");
 
   ///
   static const RECEIVE_WEB_RESOURCE_ERROR =
-      const AndroidWebViewFeature._internal("RECEIVE_WEB_RESOURCE_ERROR");
+      const AndroidWebViewFeature_._internal("RECEIVE_WEB_RESOURCE_ERROR");
 
   ///
   static const SAFE_BROWSING_ALLOWLIST =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_ALLOWLIST");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_ALLOWLIST");
 
   ///
   static const SAFE_BROWSING_ENABLE =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_ENABLE");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_ENABLE");
 
   ///
   static const SAFE_BROWSING_HIT =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_HIT");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_HIT");
 
   ///
   static const SAFE_BROWSING_PRIVACY_POLICY_URL =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_PRIVACY_POLICY_URL");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_PRIVACY_POLICY_URL");
 
   ///
   static const SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY");
 
   ///
   static const SAFE_BROWSING_RESPONSE_PROCEED =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_RESPONSE_PROCEED");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_RESPONSE_PROCEED");
 
   ///
   static const SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL");
 
   ///Use [SAFE_BROWSING_ALLOWLIST] instead.
   @Deprecated('Use SAFE_BROWSING_ALLOWLIST instead')
   static const SAFE_BROWSING_WHITELIST =
-      const AndroidWebViewFeature._internal("SAFE_BROWSING_WHITELIST");
+      const AndroidWebViewFeature_._internal("SAFE_BROWSING_WHITELIST");
 
   ///
   static const SERVICE_WORKER_BASIC_USAGE =
-      const AndroidWebViewFeature._internal("SERVICE_WORKER_BASIC_USAGE");
+      const AndroidWebViewFeature_._internal("SERVICE_WORKER_BASIC_USAGE");
 
   ///
   static const SERVICE_WORKER_BLOCK_NETWORK_LOADS =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "SERVICE_WORKER_BLOCK_NETWORK_LOADS");
 
   ///
   static const SERVICE_WORKER_CACHE_MODE =
-      const AndroidWebViewFeature._internal("SERVICE_WORKER_CACHE_MODE");
+      const AndroidWebViewFeature_._internal("SERVICE_WORKER_CACHE_MODE");
 
   ///
   static const SERVICE_WORKER_CONTENT_ACCESS =
-      const AndroidWebViewFeature._internal("SERVICE_WORKER_CONTENT_ACCESS");
+      const AndroidWebViewFeature_._internal("SERVICE_WORKER_CONTENT_ACCESS");
 
   ///
   static const SERVICE_WORKER_FILE_ACCESS =
-      const AndroidWebViewFeature._internal("SERVICE_WORKER_FILE_ACCESS");
+      const AndroidWebViewFeature_._internal("SERVICE_WORKER_FILE_ACCESS");
 
   ///
   static const SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST");
 
   ///
   static const SHOULD_OVERRIDE_WITH_REDIRECTS =
-      const AndroidWebViewFeature._internal("SHOULD_OVERRIDE_WITH_REDIRECTS");
+      const AndroidWebViewFeature_._internal("SHOULD_OVERRIDE_WITH_REDIRECTS");
 
   ///
   static const START_SAFE_BROWSING =
-      const AndroidWebViewFeature._internal("START_SAFE_BROWSING");
+      const AndroidWebViewFeature_._internal("START_SAFE_BROWSING");
 
   ///
   static const TRACING_CONTROLLER_BASIC_USAGE =
-      const AndroidWebViewFeature._internal("TRACING_CONTROLLER_BASIC_USAGE");
+      const AndroidWebViewFeature_._internal("TRACING_CONTROLLER_BASIC_USAGE");
 
   ///
   static const VISUAL_STATE_CALLBACK =
-      const AndroidWebViewFeature._internal("VISUAL_STATE_CALLBACK");
+      const AndroidWebViewFeature_._internal("VISUAL_STATE_CALLBACK");
 
   ///
   static const WEB_MESSAGE_CALLBACK_ON_MESSAGE =
-      const AndroidWebViewFeature._internal("WEB_MESSAGE_CALLBACK_ON_MESSAGE");
+      const AndroidWebViewFeature_._internal("WEB_MESSAGE_CALLBACK_ON_MESSAGE");
 
   ///
   static const WEB_MESSAGE_LISTENER =
-      const AndroidWebViewFeature._internal("WEB_MESSAGE_LISTENER");
+      const AndroidWebViewFeature_._internal("WEB_MESSAGE_LISTENER");
 
   ///
   static const WEB_MESSAGE_PORT_CLOSE =
-      const AndroidWebViewFeature._internal("WEB_MESSAGE_PORT_CLOSE");
+      const AndroidWebViewFeature_._internal("WEB_MESSAGE_PORT_CLOSE");
 
   ///
   static const WEB_MESSAGE_PORT_POST_MESSAGE =
-      const AndroidWebViewFeature._internal("WEB_MESSAGE_PORT_POST_MESSAGE");
+      const AndroidWebViewFeature_._internal("WEB_MESSAGE_PORT_POST_MESSAGE");
 
   ///
   static const WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK");
 
   ///
   static const WEB_RESOURCE_ERROR_GET_CODE =
-      const AndroidWebViewFeature._internal("WEB_RESOURCE_ERROR_GET_CODE");
+      const AndroidWebViewFeature_._internal("WEB_RESOURCE_ERROR_GET_CODE");
 
   ///
   static const WEB_RESOURCE_ERROR_GET_DESCRIPTION =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "WEB_RESOURCE_ERROR_GET_DESCRIPTION");
 
   ///
   static const WEB_RESOURCE_REQUEST_IS_REDIRECT =
-      const AndroidWebViewFeature._internal("WEB_RESOURCE_REQUEST_IS_REDIRECT");
+      const AndroidWebViewFeature_._internal("WEB_RESOURCE_REQUEST_IS_REDIRECT");
 
   ///
   static const WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE =
-      const AndroidWebViewFeature._internal(
+      const AndroidWebViewFeature_._internal(
           "WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE");
 
   ///
   static const WEB_VIEW_RENDERER_TERMINATE =
-      const AndroidWebViewFeature._internal("WEB_VIEW_RENDERER_TERMINATE");
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+      const AndroidWebViewFeature_._internal("WEB_VIEW_RENDERER_TERMINATE");
 
   ///Return whether a feature is supported at run-time. On devices running Android version `Build.VERSION_CODES.LOLLIPOP` and higher,
   ///this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device,
   ///and the WebView APK on the device. If running on a device with a lower API level, this will always return `false`.
   ///
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewFeature#isFeatureSupported(java.lang.String)
-  static Future<bool> isFeatureSupported(AndroidWebViewFeature feature) async {
+  static Future<bool> isFeatureSupported(AndroidWebViewFeature_ feature) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent("feature", () => feature.toValue());
+    args.putIfAbsent("feature", () => feature.toNativeValue());
     return await _channel.invokeMethod('isFeatureSupported', args);
   }
 }

lib/src/android/webview_feature.g.dart

@@ -0,0 +1,580 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'webview_feature.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class that represents an Android-specific utility class for checking which WebView Support Library features are supported on the device.
+class WebViewFeature {
+  final String _value;
+  final String _nativeValue;
+  const WebViewFeature._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory WebViewFeature._internalMultiPlatform(
+          String value, Function nativeValue) =>
+      WebViewFeature._internal(value, nativeValue());
+  static const _channel = const MethodChannel(
+      'com.pichillilorenzo/flutter_inappwebview_webviewfeature');
+
+  ///This feature covers [InAppWebViewController.createWebMessageChannel].
+  static const CREATE_WEB_MESSAGE_CHANNEL = WebViewFeature._internal(
+      'CREATE_WEB_MESSAGE_CHANNEL', 'CREATE_WEB_MESSAGE_CHANNEL');
+
+  ///This feature covers [InAppWebViewSettings.disabledActionModeMenuItems].
+  static const DISABLED_ACTION_MODE_MENU_ITEMS = WebViewFeature._internal(
+      'DISABLED_ACTION_MODE_MENU_ITEMS', 'DISABLED_ACTION_MODE_MENU_ITEMS');
+
+  ///This feature covers [InAppWebViewSettings.forceDark].
+  static const FORCE_DARK =
+      WebViewFeature._internal('FORCE_DARK', 'FORCE_DARK');
+
+  ///This feature covers [InAppWebViewSettings.forceDarkStrategy].
+  static const FORCE_DARK_STRATEGY =
+      WebViewFeature._internal('FORCE_DARK_STRATEGY', 'FORCE_DARK_STRATEGY');
+
+  ///
+  static const GET_WEB_CHROME_CLIENT = WebViewFeature._internal(
+      'GET_WEB_CHROME_CLIENT', 'GET_WEB_CHROME_CLIENT');
+
+  ///
+  static const GET_WEB_VIEW_CLIENT =
+      WebViewFeature._internal('GET_WEB_VIEW_CLIENT', 'GET_WEB_VIEW_CLIENT');
+
+  ///
+  static const GET_WEB_VIEW_RENDERER = WebViewFeature._internal(
+      'GET_WEB_VIEW_RENDERER', 'GET_WEB_VIEW_RENDERER');
+
+  ///
+  static const MULTI_PROCESS =
+      WebViewFeature._internal('MULTI_PROCESS', 'MULTI_PROCESS');
+
+  ///This feature covers [InAppWebViewSettings.offscreenPreRaster].
+  static const OFF_SCREEN_PRERASTER =
+      WebViewFeature._internal('OFF_SCREEN_PRERASTER', 'OFF_SCREEN_PRERASTER');
+
+  ///This feature covers [InAppWebViewController.postWebMessage].
+  static const POST_WEB_MESSAGE =
+      WebViewFeature._internal('POST_WEB_MESSAGE', 'POST_WEB_MESSAGE');
+
+  ///This feature covers [ProxyController.setProxyOverride] and [ProxyController.clearProxyOverride].
+  static const PROXY_OVERRIDE =
+      WebViewFeature._internal('PROXY_OVERRIDE', 'PROXY_OVERRIDE');
+
+  ///
+  static const RECEIVE_HTTP_ERROR =
+      WebViewFeature._internal('RECEIVE_HTTP_ERROR', 'RECEIVE_HTTP_ERROR');
+
+  ///
+  static const RECEIVE_WEB_RESOURCE_ERROR = WebViewFeature._internal(
+      'RECEIVE_WEB_RESOURCE_ERROR', 'RECEIVE_WEB_RESOURCE_ERROR');
+
+  ///This feature covers [InAppWebViewController.setSafeBrowsingAllowlist].
+  static const SAFE_BROWSING_ALLOWLIST = WebViewFeature._internal(
+      'SAFE_BROWSING_ALLOWLIST', 'SAFE_BROWSING_ALLOWLIST');
+
+  ///This feature covers [InAppWebViewSettings.safeBrowsingEnabled].
+  static const SAFE_BROWSING_ENABLE =
+      WebViewFeature._internal('SAFE_BROWSING_ENABLE', 'SAFE_BROWSING_ENABLE');
+
+  ///
+  static const SAFE_BROWSING_HIT =
+      WebViewFeature._internal('SAFE_BROWSING_HIT', 'SAFE_BROWSING_HIT');
+
+  ///This feature covers [InAppWebViewController.getSafeBrowsingPrivacyPolicyUrl].
+  static const SAFE_BROWSING_PRIVACY_POLICY_URL = WebViewFeature._internal(
+      'SAFE_BROWSING_PRIVACY_POLICY_URL', 'SAFE_BROWSING_PRIVACY_POLICY_URL');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY = WebViewFeature._internal(
+      'SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY',
+      'SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_PROCEED = WebViewFeature._internal(
+      'SAFE_BROWSING_RESPONSE_PROCEED', 'SAFE_BROWSING_RESPONSE_PROCEED');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL =
+      WebViewFeature._internal('SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL',
+          'SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL');
+
+  ///Use [SAFE_BROWSING_ALLOWLIST] instead.
+  static const SAFE_BROWSING_WHITELIST = WebViewFeature._internal(
+      'SAFE_BROWSING_WHITELIST', 'SAFE_BROWSING_WHITELIST');
+
+  ///This feature covers [ServiceWorkerController].
+  static const SERVICE_WORKER_BASIC_USAGE = WebViewFeature._internal(
+      'SERVICE_WORKER_BASIC_USAGE', 'SERVICE_WORKER_BASIC_USAGE');
+
+  ///This feature covers [ServiceWorkerController.setBlockNetworkLoads] and [ServiceWorkerController.getBlockNetworkLoads].
+  static const SERVICE_WORKER_BLOCK_NETWORK_LOADS = WebViewFeature._internal(
+      'SERVICE_WORKER_BLOCK_NETWORK_LOADS',
+      'SERVICE_WORKER_BLOCK_NETWORK_LOADS');
+
+  ///This feature covers [ServiceWorkerController.setCacheMode] and [ServiceWorkerController.getCacheMode].
+  static const SERVICE_WORKER_CACHE_MODE = WebViewFeature._internal(
+      'SERVICE_WORKER_CACHE_MODE', 'SERVICE_WORKER_CACHE_MODE');
+
+  ///This feature covers [ServiceWorkerController.setAllowContentAccess] and [ServiceWorkerController.getAllowContentAccess].
+  static const SERVICE_WORKER_CONTENT_ACCESS = WebViewFeature._internal(
+      'SERVICE_WORKER_CONTENT_ACCESS', 'SERVICE_WORKER_CONTENT_ACCESS');
+
+  ///This feature covers [ServiceWorkerController.setAllowFileAccess] and [ServiceWorkerController.getAllowFileAccess].
+  static const SERVICE_WORKER_FILE_ACCESS = WebViewFeature._internal(
+      'SERVICE_WORKER_FILE_ACCESS', 'SERVICE_WORKER_FILE_ACCESS');
+
+  ///This feature covers [ServiceWorkerClient.shouldInterceptRequest].
+  static const SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST =
+      WebViewFeature._internal('SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST',
+          'SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST');
+
+  ///
+  static const SHOULD_OVERRIDE_WITH_REDIRECTS = WebViewFeature._internal(
+      'SHOULD_OVERRIDE_WITH_REDIRECTS', 'SHOULD_OVERRIDE_WITH_REDIRECTS');
+
+  ///This feature covers [InAppWebViewController.startSafeBrowsing].
+  static const START_SAFE_BROWSING =
+      WebViewFeature._internal('START_SAFE_BROWSING', 'START_SAFE_BROWSING');
+
+  ///
+  static const TRACING_CONTROLLER_BASIC_USAGE = WebViewFeature._internal(
+      'TRACING_CONTROLLER_BASIC_USAGE', 'TRACING_CONTROLLER_BASIC_USAGE');
+
+  ///
+  static const VISUAL_STATE_CALLBACK = WebViewFeature._internal(
+      'VISUAL_STATE_CALLBACK', 'VISUAL_STATE_CALLBACK');
+
+  ///
+  static const WEB_MESSAGE_CALLBACK_ON_MESSAGE = WebViewFeature._internal(
+      'WEB_MESSAGE_CALLBACK_ON_MESSAGE', 'WEB_MESSAGE_CALLBACK_ON_MESSAGE');
+
+  ///This feature covers [WebMessageListener].
+  static const WEB_MESSAGE_LISTENER =
+      WebViewFeature._internal('WEB_MESSAGE_LISTENER', 'WEB_MESSAGE_LISTENER');
+
+  ///
+  static const WEB_MESSAGE_PORT_CLOSE = WebViewFeature._internal(
+      'WEB_MESSAGE_PORT_CLOSE', 'WEB_MESSAGE_PORT_CLOSE');
+
+  ///
+  static const WEB_MESSAGE_PORT_POST_MESSAGE = WebViewFeature._internal(
+      'WEB_MESSAGE_PORT_POST_MESSAGE', 'WEB_MESSAGE_PORT_POST_MESSAGE');
+
+  ///
+  static const WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK = WebViewFeature._internal(
+      'WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK',
+      'WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK');
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_CODE = WebViewFeature._internal(
+      'WEB_RESOURCE_ERROR_GET_CODE', 'WEB_RESOURCE_ERROR_GET_CODE');
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_DESCRIPTION = WebViewFeature._internal(
+      'WEB_RESOURCE_ERROR_GET_DESCRIPTION',
+      'WEB_RESOURCE_ERROR_GET_DESCRIPTION');
+
+  ///
+  static const WEB_RESOURCE_REQUEST_IS_REDIRECT = WebViewFeature._internal(
+      'WEB_RESOURCE_REQUEST_IS_REDIRECT', 'WEB_RESOURCE_REQUEST_IS_REDIRECT');
+
+  ///
+  static const WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE = WebViewFeature._internal(
+      'WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE',
+      'WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE');
+
+  ///
+  static const WEB_VIEW_RENDERER_TERMINATE = WebViewFeature._internal(
+      'WEB_VIEW_RENDERER_TERMINATE', 'WEB_VIEW_RENDERER_TERMINATE');
+
+  ///Set of all values of [WebViewFeature].
+  static final Set<WebViewFeature> values = [
+    WebViewFeature.CREATE_WEB_MESSAGE_CHANNEL,
+    WebViewFeature.DISABLED_ACTION_MODE_MENU_ITEMS,
+    WebViewFeature.FORCE_DARK,
+    WebViewFeature.FORCE_DARK_STRATEGY,
+    WebViewFeature.GET_WEB_CHROME_CLIENT,
+    WebViewFeature.GET_WEB_VIEW_CLIENT,
+    WebViewFeature.GET_WEB_VIEW_RENDERER,
+    WebViewFeature.MULTI_PROCESS,
+    WebViewFeature.OFF_SCREEN_PRERASTER,
+    WebViewFeature.POST_WEB_MESSAGE,
+    WebViewFeature.PROXY_OVERRIDE,
+    WebViewFeature.RECEIVE_HTTP_ERROR,
+    WebViewFeature.RECEIVE_WEB_RESOURCE_ERROR,
+    WebViewFeature.SAFE_BROWSING_ALLOWLIST,
+    WebViewFeature.SAFE_BROWSING_ENABLE,
+    WebViewFeature.SAFE_BROWSING_HIT,
+    WebViewFeature.SAFE_BROWSING_PRIVACY_POLICY_URL,
+    WebViewFeature.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
+    WebViewFeature.SAFE_BROWSING_RESPONSE_PROCEED,
+    WebViewFeature.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL,
+    WebViewFeature.SAFE_BROWSING_WHITELIST,
+    WebViewFeature.SERVICE_WORKER_BASIC_USAGE,
+    WebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS,
+    WebViewFeature.SERVICE_WORKER_CACHE_MODE,
+    WebViewFeature.SERVICE_WORKER_CONTENT_ACCESS,
+    WebViewFeature.SERVICE_WORKER_FILE_ACCESS,
+    WebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST,
+    WebViewFeature.SHOULD_OVERRIDE_WITH_REDIRECTS,
+    WebViewFeature.START_SAFE_BROWSING,
+    WebViewFeature.TRACING_CONTROLLER_BASIC_USAGE,
+    WebViewFeature.VISUAL_STATE_CALLBACK,
+    WebViewFeature.WEB_MESSAGE_CALLBACK_ON_MESSAGE,
+    WebViewFeature.WEB_MESSAGE_LISTENER,
+    WebViewFeature.WEB_MESSAGE_PORT_CLOSE,
+    WebViewFeature.WEB_MESSAGE_PORT_POST_MESSAGE,
+    WebViewFeature.WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK,
+    WebViewFeature.WEB_RESOURCE_ERROR_GET_CODE,
+    WebViewFeature.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
+    WebViewFeature.WEB_RESOURCE_REQUEST_IS_REDIRECT,
+    WebViewFeature.WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE,
+    WebViewFeature.WEB_VIEW_RENDERER_TERMINATE,
+  ].toSet();
+
+  ///Gets a possible [WebViewFeature] instance from [String] value.
+  static WebViewFeature? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return WebViewFeature.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [WebViewFeature] instance from a native value.
+  static WebViewFeature? fromNativeValue(String? value) {
+    if (value != null) {
+      try {
+        return WebViewFeature.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Return whether a feature is supported at run-time. On devices running Android version `Build.VERSION_CODES.LOLLIPOP` and higher,
+  ///this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device,
+  ///and the WebView APK on the device. If running on a device with a lower API level, this will always return `false`.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewFeature#isFeatureSupported(java.lang.String)
+  static Future<bool> isFeatureSupported(WebViewFeature feature) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("feature", () => feature.toNativeValue());
+    return await _channel.invokeMethod('isFeatureSupported', args);
+  }
+
+  ///Gets [String] value.
+  String toValue() => _value;
+
+  ///Gets [String] native value.
+  String toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    return _value;
+  }
+}
+
+///Class that represents an Android-specific utility class for checking which WebView Support Library features are supported on the device.
+///Use [WebViewFeature] instead.
+@Deprecated('Use WebViewFeature instead')
+class AndroidWebViewFeature {
+  final String _value;
+  final String _nativeValue;
+  const AndroidWebViewFeature._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory AndroidWebViewFeature._internalMultiPlatform(
+          String value, Function nativeValue) =>
+      AndroidWebViewFeature._internal(value, nativeValue());
+  static const _channel = const MethodChannel(
+      'com.pichillilorenzo/flutter_inappwebview_webviewfeature');
+
+  ///
+  static const CREATE_WEB_MESSAGE_CHANNEL = AndroidWebViewFeature._internal(
+      'CREATE_WEB_MESSAGE_CHANNEL', 'CREATE_WEB_MESSAGE_CHANNEL');
+
+  ///
+  static const DISABLED_ACTION_MODE_MENU_ITEMS =
+      AndroidWebViewFeature._internal(
+          'DISABLED_ACTION_MODE_MENU_ITEMS', 'DISABLED_ACTION_MODE_MENU_ITEMS');
+
+  ///
+  static const FORCE_DARK =
+      AndroidWebViewFeature._internal('FORCE_DARK', 'FORCE_DARK');
+
+  ///
+  static const FORCE_DARK_STRATEGY = AndroidWebViewFeature._internal(
+      'FORCE_DARK_STRATEGY', 'FORCE_DARK_STRATEGY');
+
+  ///
+  static const GET_WEB_CHROME_CLIENT = AndroidWebViewFeature._internal(
+      'GET_WEB_CHROME_CLIENT', 'GET_WEB_CHROME_CLIENT');
+
+  ///
+  static const GET_WEB_VIEW_CLIENT = AndroidWebViewFeature._internal(
+      'GET_WEB_VIEW_CLIENT', 'GET_WEB_VIEW_CLIENT');
+
+  ///
+  static const GET_WEB_VIEW_RENDERER = AndroidWebViewFeature._internal(
+      'GET_WEB_VIEW_RENDERER', 'GET_WEB_VIEW_RENDERER');
+
+  ///
+  static const MULTI_PROCESS =
+      AndroidWebViewFeature._internal('MULTI_PROCESS', 'MULTI_PROCESS');
+
+  ///
+  static const OFF_SCREEN_PRERASTER = AndroidWebViewFeature._internal(
+      'OFF_SCREEN_PRERASTER', 'OFF_SCREEN_PRERASTER');
+
+  ///
+  static const POST_WEB_MESSAGE =
+      AndroidWebViewFeature._internal('POST_WEB_MESSAGE', 'POST_WEB_MESSAGE');
+
+  ///
+  static const PROXY_OVERRIDE =
+      AndroidWebViewFeature._internal('PROXY_OVERRIDE', 'PROXY_OVERRIDE');
+
+  ///
+  static const RECEIVE_HTTP_ERROR = AndroidWebViewFeature._internal(
+      'RECEIVE_HTTP_ERROR', 'RECEIVE_HTTP_ERROR');
+
+  ///
+  static const RECEIVE_WEB_RESOURCE_ERROR = AndroidWebViewFeature._internal(
+      'RECEIVE_WEB_RESOURCE_ERROR', 'RECEIVE_WEB_RESOURCE_ERROR');
+
+  ///
+  static const SAFE_BROWSING_ALLOWLIST = AndroidWebViewFeature._internal(
+      'SAFE_BROWSING_ALLOWLIST', 'SAFE_BROWSING_ALLOWLIST');
+
+  ///
+  static const SAFE_BROWSING_ENABLE = AndroidWebViewFeature._internal(
+      'SAFE_BROWSING_ENABLE', 'SAFE_BROWSING_ENABLE');
+
+  ///
+  static const SAFE_BROWSING_HIT =
+      AndroidWebViewFeature._internal('SAFE_BROWSING_HIT', 'SAFE_BROWSING_HIT');
+
+  ///
+  static const SAFE_BROWSING_PRIVACY_POLICY_URL =
+      AndroidWebViewFeature._internal('SAFE_BROWSING_PRIVACY_POLICY_URL',
+          'SAFE_BROWSING_PRIVACY_POLICY_URL');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY =
+      AndroidWebViewFeature._internal('SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY',
+          'SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_PROCEED = AndroidWebViewFeature._internal(
+      'SAFE_BROWSING_RESPONSE_PROCEED', 'SAFE_BROWSING_RESPONSE_PROCEED');
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL =
+      AndroidWebViewFeature._internal(
+          'SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL',
+          'SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL');
+
+  ///Use [SAFE_BROWSING_ALLOWLIST] instead.
+  static const SAFE_BROWSING_WHITELIST = AndroidWebViewFeature._internal(
+      'SAFE_BROWSING_WHITELIST', 'SAFE_BROWSING_WHITELIST');
+
+  ///
+  static const SERVICE_WORKER_BASIC_USAGE = AndroidWebViewFeature._internal(
+      'SERVICE_WORKER_BASIC_USAGE', 'SERVICE_WORKER_BASIC_USAGE');
+
+  ///
+  static const SERVICE_WORKER_BLOCK_NETWORK_LOADS =
+      AndroidWebViewFeature._internal('SERVICE_WORKER_BLOCK_NETWORK_LOADS',
+          'SERVICE_WORKER_BLOCK_NETWORK_LOADS');
+
+  ///
+  static const SERVICE_WORKER_CACHE_MODE = AndroidWebViewFeature._internal(
+      'SERVICE_WORKER_CACHE_MODE', 'SERVICE_WORKER_CACHE_MODE');
+
+  ///
+  static const SERVICE_WORKER_CONTENT_ACCESS = AndroidWebViewFeature._internal(
+      'SERVICE_WORKER_CONTENT_ACCESS', 'SERVICE_WORKER_CONTENT_ACCESS');
+
+  ///
+  static const SERVICE_WORKER_FILE_ACCESS = AndroidWebViewFeature._internal(
+      'SERVICE_WORKER_FILE_ACCESS', 'SERVICE_WORKER_FILE_ACCESS');
+
+  ///
+  static const SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST =
+      AndroidWebViewFeature._internal('SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST',
+          'SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST');
+
+  ///
+  static const SHOULD_OVERRIDE_WITH_REDIRECTS = AndroidWebViewFeature._internal(
+      'SHOULD_OVERRIDE_WITH_REDIRECTS', 'SHOULD_OVERRIDE_WITH_REDIRECTS');
+
+  ///
+  static const START_SAFE_BROWSING = AndroidWebViewFeature._internal(
+      'START_SAFE_BROWSING', 'START_SAFE_BROWSING');
+
+  ///
+  static const TRACING_CONTROLLER_BASIC_USAGE = AndroidWebViewFeature._internal(
+      'TRACING_CONTROLLER_BASIC_USAGE', 'TRACING_CONTROLLER_BASIC_USAGE');
+
+  ///
+  static const VISUAL_STATE_CALLBACK = AndroidWebViewFeature._internal(
+      'VISUAL_STATE_CALLBACK', 'VISUAL_STATE_CALLBACK');
+
+  ///
+  static const WEB_MESSAGE_CALLBACK_ON_MESSAGE =
+      AndroidWebViewFeature._internal(
+          'WEB_MESSAGE_CALLBACK_ON_MESSAGE', 'WEB_MESSAGE_CALLBACK_ON_MESSAGE');
+
+  ///
+  static const WEB_MESSAGE_LISTENER = AndroidWebViewFeature._internal(
+      'WEB_MESSAGE_LISTENER', 'WEB_MESSAGE_LISTENER');
+
+  ///
+  static const WEB_MESSAGE_PORT_CLOSE = AndroidWebViewFeature._internal(
+      'WEB_MESSAGE_PORT_CLOSE', 'WEB_MESSAGE_PORT_CLOSE');
+
+  ///
+  static const WEB_MESSAGE_PORT_POST_MESSAGE = AndroidWebViewFeature._internal(
+      'WEB_MESSAGE_PORT_POST_MESSAGE', 'WEB_MESSAGE_PORT_POST_MESSAGE');
+
+  ///
+  static const WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK =
+      AndroidWebViewFeature._internal('WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK',
+          'WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK');
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_CODE = AndroidWebViewFeature._internal(
+      'WEB_RESOURCE_ERROR_GET_CODE', 'WEB_RESOURCE_ERROR_GET_CODE');
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_DESCRIPTION =
+      AndroidWebViewFeature._internal('WEB_RESOURCE_ERROR_GET_DESCRIPTION',
+          'WEB_RESOURCE_ERROR_GET_DESCRIPTION');
+
+  ///
+  static const WEB_RESOURCE_REQUEST_IS_REDIRECT =
+      AndroidWebViewFeature._internal('WEB_RESOURCE_REQUEST_IS_REDIRECT',
+          'WEB_RESOURCE_REQUEST_IS_REDIRECT');
+
+  ///
+  static const WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE =
+      AndroidWebViewFeature._internal('WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE',
+          'WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE');
+
+  ///
+  static const WEB_VIEW_RENDERER_TERMINATE = AndroidWebViewFeature._internal(
+      'WEB_VIEW_RENDERER_TERMINATE', 'WEB_VIEW_RENDERER_TERMINATE');
+
+  ///Set of all values of [AndroidWebViewFeature].
+  static final Set<AndroidWebViewFeature> values = [
+    AndroidWebViewFeature.CREATE_WEB_MESSAGE_CHANNEL,
+    AndroidWebViewFeature.DISABLED_ACTION_MODE_MENU_ITEMS,
+    AndroidWebViewFeature.FORCE_DARK,
+    AndroidWebViewFeature.FORCE_DARK_STRATEGY,
+    AndroidWebViewFeature.GET_WEB_CHROME_CLIENT,
+    AndroidWebViewFeature.GET_WEB_VIEW_CLIENT,
+    AndroidWebViewFeature.GET_WEB_VIEW_RENDERER,
+    AndroidWebViewFeature.MULTI_PROCESS,
+    AndroidWebViewFeature.OFF_SCREEN_PRERASTER,
+    AndroidWebViewFeature.POST_WEB_MESSAGE,
+    AndroidWebViewFeature.PROXY_OVERRIDE,
+    AndroidWebViewFeature.RECEIVE_HTTP_ERROR,
+    AndroidWebViewFeature.RECEIVE_WEB_RESOURCE_ERROR,
+    AndroidWebViewFeature.SAFE_BROWSING_ALLOWLIST,
+    AndroidWebViewFeature.SAFE_BROWSING_ENABLE,
+    AndroidWebViewFeature.SAFE_BROWSING_HIT,
+    AndroidWebViewFeature.SAFE_BROWSING_PRIVACY_POLICY_URL,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_PROCEED,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL,
+    AndroidWebViewFeature.SAFE_BROWSING_WHITELIST,
+    AndroidWebViewFeature.SERVICE_WORKER_BASIC_USAGE,
+    AndroidWebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS,
+    AndroidWebViewFeature.SERVICE_WORKER_CACHE_MODE,
+    AndroidWebViewFeature.SERVICE_WORKER_CONTENT_ACCESS,
+    AndroidWebViewFeature.SERVICE_WORKER_FILE_ACCESS,
+    AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST,
+    AndroidWebViewFeature.SHOULD_OVERRIDE_WITH_REDIRECTS,
+    AndroidWebViewFeature.START_SAFE_BROWSING,
+    AndroidWebViewFeature.TRACING_CONTROLLER_BASIC_USAGE,
+    AndroidWebViewFeature.VISUAL_STATE_CALLBACK,
+    AndroidWebViewFeature.WEB_MESSAGE_CALLBACK_ON_MESSAGE,
+    AndroidWebViewFeature.WEB_MESSAGE_LISTENER,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_CLOSE,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_POST_MESSAGE,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK,
+    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_CODE,
+    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
+    AndroidWebViewFeature.WEB_RESOURCE_REQUEST_IS_REDIRECT,
+    AndroidWebViewFeature.WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE,
+    AndroidWebViewFeature.WEB_VIEW_RENDERER_TERMINATE,
+  ].toSet();
+
+  ///Gets a possible [AndroidWebViewFeature] instance from [String] value.
+  static AndroidWebViewFeature? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return AndroidWebViewFeature.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AndroidWebViewFeature] instance from a native value.
+  static AndroidWebViewFeature? fromNativeValue(String? value) {
+    if (value != null) {
+      try {
+        return AndroidWebViewFeature.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Return whether a feature is supported at run-time. On devices running Android version `Build.VERSION_CODES.LOLLIPOP` and higher,
+  ///this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device,
+  ///and the WebView APK on the device. If running on a device with a lower API level, this will always return `false`.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewFeature#isFeatureSupported(java.lang.String)
+  static Future<bool> isFeatureSupported(AndroidWebViewFeature feature) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("feature", () => feature.toNativeValue());
+    return await _channel.invokeMethod('isFeatureSupported', args);
+  }
+
+  ///Gets [String] value.
+  String toValue() => _value;
+
+  ///Gets [String] native value.
+  String toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    return _value;
+  }
+}

lib/src/chrome_safari_browser/android/chrome_custom_tabs_options.dart

@@ -95,7 +95,7 @@ class AndroidChromeCustomTabsOptions
     return {
       // ignore: deprecated_member_use_from_same_package
       "addDefaultShareMenuItem": addDefaultShareMenuItem,
-      "shareState": shareState.toValue(),
+      "shareState": shareState.toNativeValue(),
       "showTitle": showTitle,
       "toolbarBackgroundColor": toolbarBackgroundColor?.toHex(),
       "enableUrlBarHiding": enableUrlBarHiding,
@@ -107,7 +107,7 @@ class AndroidChromeCustomTabsOptions
       "isTrustedWebActivity": isTrustedWebActivity,
       "additionalTrustedOrigins": additionalTrustedOrigins,
       "displayMode": displayMode?.toMap(),
-      "screenOrientation": screenOrientation.toValue()
+      "screenOrientation": screenOrientation.toNativeValue()
     };
   }
 

lib/src/chrome_safari_browser/apple/safari_options.dart

@@ -53,11 +53,11 @@ class IOSSafariOptions implements ChromeSafariBrowserOptions, IosOptions {
     return {
       "entersReaderIfAvailable": entersReaderIfAvailable,
       "barCollapsingEnabled": barCollapsingEnabled,
-      "dismissButtonStyle": dismissButtonStyle.toValue(),
+      "dismissButtonStyle": dismissButtonStyle.toNativeValue(),
       "preferredBarTintColor": preferredBarTintColor?.toHex(),
       "preferredControlTintColor": preferredControlTintColor?.toHex(),
-      "presentationStyle": presentationStyle.toValue(),
-      "transitionStyle": transitionStyle.toValue()
+      "presentationStyle": presentationStyle.toNativeValue(),
+      "transitionStyle": transitionStyle.toNativeValue()
     };
   }
 
@@ -66,15 +66,15 @@ class IOSSafariOptions implements ChromeSafariBrowserOptions, IosOptions {
     options.entersReaderIfAvailable = map["entersReaderIfAvailable"];
     options.barCollapsingEnabled = map["barCollapsingEnabled"];
     options.dismissButtonStyle =
-        IOSSafariDismissButtonStyle.fromValue(map["dismissButtonStyle"])!;
+        IOSSafariDismissButtonStyle.fromNativeValue(map["dismissButtonStyle"])!;
     options.preferredBarTintColor =
         UtilColor.fromHex(map["preferredBarTintColor"]);
     options.preferredControlTintColor =
         UtilColor.fromHex(map["preferredControlTintColor"]);
     options.presentationStyle =
-        IOSUIModalPresentationStyle.fromValue(map["presentationStyle"])!;
+        IOSUIModalPresentationStyle.fromNativeValue(map["presentationStyle"])!;
     options.transitionStyle =
-        IOSUIModalTransitionStyle.fromValue(map["transitionStyle"])!;
+        IOSUIModalTransitionStyle.fromNativeValue(map["transitionStyle"])!;
     return options;
   }
 

lib/src/chrome_safari_browser/chrome_safari_browser.dart

@@ -62,7 +62,14 @@ class ChromeSafariBrowser {
     id = IdGenerator.generate();
     this._channel =
         MethodChannel('com.pichillilorenzo/flutter_chromesafaribrowser_$id');
-    this._channel.setMethodCallHandler(_handleMethod);
+    this._channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _isOpened = false;
   }
 
@@ -83,7 +90,11 @@ class ChromeSafariBrowser {
       if (maxLogMessageLength >= 0 && message.length > maxLogMessageLength) {
         message = message.substring(0, maxLogMessageLength) + "...";
       }
-      developer.log(message, name: this.runtimeType.toString());
+      if (!ChromeSafariBrowser.debugLoggingSettings.usePrint) {
+        developer.log(message, name: this.runtimeType.toString());
+      } else {
+        print("[${this.runtimeType.toString()}] $message");
+      }
     }
   }
 

lib/src/chrome_safari_browser/chrome_safari_browser_settings.dart

@@ -201,7 +201,7 @@ class ChromeSafariBrowserSettings implements ChromeSafariBrowserOptions {
   @override
   Map<String, dynamic> toMap() {
     return {
-      "shareState": shareState.toValue(),
+      "shareState": shareState.toNativeValue(),
       "showTitle": showTitle,
       "toolbarBackgroundColor": toolbarBackgroundColor?.toHex(),
       "enableUrlBarHiding": enableUrlBarHiding,
@@ -213,14 +213,14 @@ class ChromeSafariBrowserSettings implements ChromeSafariBrowserOptions {
       "isTrustedWebActivity": isTrustedWebActivity,
       "additionalTrustedOrigins": additionalTrustedOrigins,
       "displayMode": displayMode?.toMap(),
-      "screenOrientation": screenOrientation.toValue(),
+      "screenOrientation": screenOrientation.toNativeValue(),
       "entersReaderIfAvailable": entersReaderIfAvailable,
       "barCollapsingEnabled": barCollapsingEnabled,
-      "dismissButtonStyle": dismissButtonStyle.toValue(),
+      "dismissButtonStyle": dismissButtonStyle.toNativeValue(),
       "preferredBarTintColor": preferredBarTintColor?.toHex(),
       "preferredControlTintColor": preferredControlTintColor?.toHex(),
-      "presentationStyle": presentationStyle.toValue(),
-      "transitionStyle": transitionStyle.toValue()
+      "presentationStyle": presentationStyle.toNativeValue(),
+      "transitionStyle": transitionStyle.toNativeValue()
     };
   }
 
@@ -256,15 +256,15 @@ class ChromeSafariBrowserSettings implements ChromeSafariBrowserOptions {
       settings.entersReaderIfAvailable = map["entersReaderIfAvailable"];
       settings.barCollapsingEnabled = map["barCollapsingEnabled"];
       settings.dismissButtonStyle =
-          DismissButtonStyle.fromValue(map["dismissButtonStyle"])!;
+          DismissButtonStyle.fromNativeValue(map["dismissButtonStyle"])!;
       settings.preferredBarTintColor =
           UtilColor.fromHex(map["preferredBarTintColor"]);
       settings.preferredControlTintColor =
           UtilColor.fromHex(map["preferredControlTintColor"]);
       settings.presentationStyle =
-          ModalPresentationStyle.fromValue(map["presentationStyle"])!;
+          ModalPresentationStyle.fromNativeValue(map["presentationStyle"])!;
       settings.transitionStyle =
-          ModalTransitionStyle.fromValue(map["transitionStyle"])!;
+          ModalTransitionStyle.fromNativeValue(map["transitionStyle"])!;
     }
     return settings;
   }

lib/src/content_blocker.dart

@@ -88,11 +88,11 @@ class ContentBlockerTrigger {
   Map<String, dynamic> toMap() {
     List<String> resourceTypeStringList = [];
     resourceType.forEach((type) {
-      resourceTypeStringList.add(type.toValue());
+      resourceTypeStringList.add(type.toNativeValue());
     });
     List<String> loadTypeStringList = [];
     loadType.forEach((type) {
-      loadTypeStringList.add(type.toValue());
+      loadTypeStringList.add(type.toNativeValue());
     });
 
     Map<String, dynamic> map = {
@@ -123,7 +123,7 @@ class ContentBlockerTrigger {
     List<String> resourceTypeStringList =
         List<String>.from(map["resource-type"] ?? []);
     resourceTypeStringList.forEach((typeValue) {
-      var type = ContentBlockerTriggerResourceType.fromValue(typeValue);
+      var type = ContentBlockerTriggerResourceType.fromNativeValue(typeValue);
       if (type != null) {
         resourceType.add(type);
       }
@@ -131,7 +131,7 @@ class ContentBlockerTrigger {
 
     List<String> loadTypeStringList = List<String>.from(map["load-type"] ?? []);
     loadTypeStringList.forEach((typeValue) {
-      var type = ContentBlockerTriggerLoadType.fromValue(typeValue);
+      var type = ContentBlockerTriggerLoadType.fromNativeValue(typeValue);
       if (type != null) {
         loadType.add(type);
       }
@@ -172,7 +172,7 @@ class ContentBlockerAction {
   }
 
   Map<String, dynamic> toMap() {
-    Map<String, dynamic> map = {"type": type.toValue(), "selector": selector};
+    Map<String, dynamic> map = {"type": type.toNativeValue(), "selector": selector};
 
     map.keys
         .where((key) =>
@@ -186,7 +186,7 @@ class ContentBlockerAction {
 
   static ContentBlockerAction fromMap(Map<String, dynamic> map) {
     return ContentBlockerAction(
-        type: ContentBlockerActionType.fromValue(map["type"])!,
+        type: ContentBlockerActionType.fromNativeValue(map["type"])!,
         selector: map["selector"]);
   }
 }

lib/src/cookie_manager.dart

@@ -42,7 +42,14 @@ class CookieManager {
   }
 
   static CookieManager _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = CookieManager();
     // ignore: deprecated_member_use_from_same_package
     _instance!.ios = IOSCookieManager.instance();
@@ -128,7 +135,7 @@ class CookieManager {
     args.putIfAbsent('maxAge', () => maxAge);
     args.putIfAbsent('isSecure', () => isSecure);
     args.putIfAbsent('isHttpOnly', () => isHttpOnly);
-    args.putIfAbsent('sameSite', () => sameSite?.toValue());
+    args.putIfAbsent('sameSite', () => sameSite?.toNativeValue());
 
     await _channel.invokeMethod('setCookie', args);
   }
@@ -154,7 +161,7 @@ class CookieManager {
 
     if (isSecure != null && isSecure) cookieValue += "; Secure";
 
-    if (sameSite != null) cookieValue += "; SameSite=" + sameSite.toValue();
+    if (sameSite != null) cookieValue += "; SameSite=" + sameSite.toNativeValue();
 
     cookieValue += ";";
 
@@ -236,7 +243,7 @@ class CookieManager {
           expiresDate: cookieMap["expiresDate"],
           isSessionOnly: cookieMap["isSessionOnly"],
           domain: cookieMap["domain"],
-          sameSite: HTTPCookieSameSitePolicy.fromValue(cookieMap["sameSite"]),
+          sameSite: HTTPCookieSameSitePolicy.fromNativeValue(cookieMap["sameSite"]),
           isSecure: cookieMap["isSecure"],
           isHttpOnly: cookieMap["isHttpOnly"],
           path: cookieMap["path"]));
@@ -358,7 +365,7 @@ class CookieManager {
             isSessionOnly: cookies[i]["isSessionOnly"],
             domain: cookies[i]["domain"],
             sameSite:
-                HTTPCookieSameSitePolicy.fromValue(cookies[i]["sameSite"]),
+                HTTPCookieSameSitePolicy.fromNativeValue(cookies[i]["sameSite"]),
             isSecure: cookies[i]["isSecure"],
             isHttpOnly: cookies[i]["isHttpOnly"],
             path: cookies[i]["path"]);
@@ -526,7 +533,7 @@ class CookieManager {
           expiresDate: cookieMap["expiresDate"],
           isSessionOnly: cookieMap["isSessionOnly"],
           domain: cookieMap["domain"],
-          sameSite: HTTPCookieSameSitePolicy.fromValue(cookieMap["sameSite"]),
+          sameSite: HTTPCookieSameSitePolicy.fromNativeValue(cookieMap["sameSite"]),
           isSecure: cookieMap["isSecure"],
           isHttpOnly: cookieMap["isHttpOnly"],
           path: cookieMap["path"]));
@@ -588,7 +595,7 @@ class IOSCookieManager {
           expiresDate: cookieMap["expiresDate"],
           isSessionOnly: cookieMap["isSessionOnly"],
           domain: cookieMap["domain"],
-          sameSite: HTTPCookieSameSitePolicy.fromValue(cookieMap["sameSite"]),
+          sameSite: HTTPCookieSameSitePolicy.fromNativeValue(cookieMap["sameSite"]),
           isSecure: cookieMap["isSecure"],
           isHttpOnly: cookieMap["isHttpOnly"],
           path: cookieMap["path"]));

lib/src/debug_logging_settings.dart

@@ -1,8 +1,9 @@
 import 'package:flutter/foundation.dart';
 import 'in_app_webview/webview.dart';
 import 'chrome_safari_browser/chrome_safari_browser.dart';
+import 'in_app_browser/in_app_browser.dart';
 
-///Class that represents the debug logging settings used by [WebView] and [ChromeSafariBrowser].
+///Class that represents the debug logging settings used by [WebView], [InAppBrowser] and [ChromeSafariBrowser].
 class DebugLoggingSettings {
   ///Enables debug logging info.
   ///
@@ -20,9 +21,13 @@ class DebugLoggingSettings {
   ///The default value is `-1`.
   int maxLogMessageLength;
 
+  ///Use [print] instead of `developer.log` to log messages.
+  bool usePrint;
+
   DebugLoggingSettings({
     this.enabled = kDebugMode,
     this.excludeFilter = const [],
-    this.maxLogMessageLength = -1
+    this.maxLogMessageLength = -1,
+    this.usePrint = false
   });
 }

lib/src/http_auth_credentials_database.dart

@@ -23,7 +23,14 @@ class HttpAuthCredentialDatabase {
   }
 
   static HttpAuthCredentialDatabase _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = HttpAuthCredentialDatabase();
     return _instance!;
   }

lib/src/in_app_browser/apple/in_app_browser_options.dart

@@ -68,8 +68,8 @@ class IOSInAppBrowserOptions implements BrowserOptions, IosOptions {
       "toolbarBottomTranslucent": toolbarBottomTranslucent,
       "closeButtonCaption": closeButtonCaption,
       "closeButtonColor": closeButtonColor?.toHex(),
-      "presentationStyle": presentationStyle.toValue(),
-      "transitionStyle": transitionStyle.toValue(),
+      "presentationStyle": presentationStyle.toNativeValue(),
+      "transitionStyle": transitionStyle.toNativeValue(),
     };
   }
 
@@ -87,9 +87,9 @@ class IOSInAppBrowserOptions implements BrowserOptions, IosOptions {
     instance.closeButtonCaption = map["closeButtonCaption"];
     instance.closeButtonColor = UtilColor.fromHex(map["closeButtonColor"]);
     instance.presentationStyle =
-        IOSUIModalPresentationStyle.fromValue(map["presentationStyle"])!;
+        IOSUIModalPresentationStyle.fromNativeValue(map["presentationStyle"])!;
     instance.transitionStyle =
-        IOSUIModalTransitionStyle.fromValue(map["transitionStyle"])!;
+        IOSUIModalTransitionStyle.fromNativeValue(map["transitionStyle"])!;
     return instance;
   }
 

lib/src/in_app_browser/in_app_browser.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:collection';
 import 'dart:typed_data';
+import 'dart:developer' as developer;
 
 import 'package:flutter/services.dart';
 
@@ -14,6 +15,7 @@ import '../in_app_webview/in_app_webview_settings.dart';
 import '../util.dart';
 import '../print_job/main.dart';
 import 'in_app_browser_settings.dart';
+import '../debug_logging_settings.dart';
 
 class InAppBrowserAlreadyOpenedException implements Exception {
   final dynamic message;
@@ -46,6 +48,9 @@ class InAppBrowserNotOpenedException implements Exception {
 ///- Android native WebView
 ///- iOS
 class InAppBrowser {
+  ///Debug settings.
+  static DebugLoggingSettings debugLoggingSettings = DebugLoggingSettings();
+
   ///View ID used internally.
   late final String id;
 
@@ -80,20 +85,54 @@ class InAppBrowser {
     id = IdGenerator.generate();
     this._channel =
         MethodChannel('com.pichillilorenzo/flutter_inappbrowser_$id');
-    this._channel.setMethodCallHandler(_handleMethod);
+    this._channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _isOpened = false;
     webViewController = new InAppWebViewController.fromInAppBrowser(
         this._channel, this, this.initialUserScripts);
   }
 
+  _debugLog(String method, dynamic args) {
+    if (InAppBrowser.debugLoggingSettings.enabled) {
+      for (var regExp
+      in InAppBrowser.debugLoggingSettings.excludeFilter) {
+        if (regExp.hasMatch(method)) return;
+      }
+      var maxLogMessageLength =
+          InAppBrowser.debugLoggingSettings.maxLogMessageLength;
+      String message = "InAppBrowser ID " +
+          id +
+          " calling \"" +
+          method.toString() +
+          "\" using " +
+          args.toString();
+      if (maxLogMessageLength >= 0 && message.length > maxLogMessageLength) {
+        message = message.substring(0, maxLogMessageLength) + "...";
+      }
+      if (!InAppBrowser.debugLoggingSettings.usePrint) {
+        developer.log(message, name: this.runtimeType.toString());
+      } else {
+        print("[${this.runtimeType.toString()}] $message");
+      }
+    }
+  }
+
   Future<dynamic> _handleMethod(MethodCall call) async {
     switch (call.method) {
       case "onBrowserCreated":
+        _debugLog(call.method, call.arguments);
         this._isOpened = true;
         this.pullToRefreshController?.initMethodChannel(id);
         onBrowserCreated();
         break;
       case "onExit":
+        _debugLog(call.method, call.arguments);
         this._isOpened = false;
         onExit();
         break;
@@ -133,7 +172,7 @@ class InAppBrowser {
     args.putIfAbsent('settings', () => initialSettings);
     args.putIfAbsent('contextMenu', () => contextMenu?.toMap() ?? {});
     args.putIfAbsent('windowId', () => windowId);
-    args.putIfAbsent('implementation', () => implementation.toValue());
+    args.putIfAbsent('implementation', () => implementation.toNativeValue());
     args.putIfAbsent('initialUserScripts',
         () => initialUserScripts?.map((e) => e.toMap()).toList() ?? []);
     args.putIfAbsent('pullToRefreshSettings', () => pullToRefreshSettings);
@@ -201,7 +240,7 @@ class InAppBrowser {
     args.putIfAbsent('settings', () => initialSettings);
     args.putIfAbsent('contextMenu', () => contextMenu?.toMap() ?? {});
     args.putIfAbsent('windowId', () => windowId);
-    args.putIfAbsent('implementation', () => implementation.toValue());
+    args.putIfAbsent('implementation', () => implementation.toNativeValue());
     args.putIfAbsent('initialUserScripts',
         () => initialUserScripts?.map((e) => e.toMap()).toList() ?? []);
     args.putIfAbsent('pullToRefreshSettings', () => pullToRefreshSettings);
@@ -252,7 +291,7 @@ class InAppBrowser {
         () => (historyUrl ?? androidHistoryUrl)?.toString() ?? "about:blank");
     args.putIfAbsent('contextMenu', () => contextMenu?.toMap() ?? {});
     args.putIfAbsent('windowId', () => windowId);
-    args.putIfAbsent('implementation', () => implementation.toValue());
+    args.putIfAbsent('implementation', () => implementation.toNativeValue());
     args.putIfAbsent('initialUserScripts',
         () => initialUserScripts?.map((e) => e.toMap()).toList() ?? []);
     args.putIfAbsent('pullToRefreshSettings', () => pullToRefreshSettings);

lib/src/in_app_browser/in_app_browser_settings.dart

@@ -261,8 +261,8 @@ class InAppBrowserSettings
       "toolbarBottomTranslucent": toolbarBottomTranslucent,
       "closeButtonCaption": closeButtonCaption,
       "closeButtonColor": closeButtonColor?.toHex(),
-      "presentationStyle": presentationStyle.toValue(),
-      "transitionStyle": transitionStyle.toValue(),
+      "presentationStyle": presentationStyle.toNativeValue(),
+      "transitionStyle": transitionStyle.toNativeValue(),
     };
   }
 
@@ -296,9 +296,9 @@ class InAppBrowserSettings
       settings.closeButtonCaption = map["closeButtonCaption"];
       settings.closeButtonColor = UtilColor.fromHex(map["closeButtonColor"]);
       settings.presentationStyle =
-          ModalPresentationStyle.fromValue(map["presentationStyle"])!;
+          ModalPresentationStyle.fromNativeValue(map["presentationStyle"])!;
       settings.transitionStyle =
-          ModalTransitionStyle.fromValue(map["transitionStyle"])!;
+          ModalTransitionStyle.fromNativeValue(map["transitionStyle"])!;
     }
     return settings;
   }

lib/src/in_app_webview/android/in_app_webview_options.dart

@@ -307,23 +307,23 @@ class AndroidInAppWebViewOptions
       "domStorageEnabled": domStorageEnabled,
       "useWideViewPort": useWideViewPort,
       "safeBrowsingEnabled": safeBrowsingEnabled,
-      "mixedContentMode": mixedContentMode?.toValue(),
+      "mixedContentMode": mixedContentMode?.toNativeValue(),
       "allowContentAccess": allowContentAccess,
       "allowFileAccess": allowFileAccess,
       "appCachePath": appCachePath,
       "blockNetworkImage": blockNetworkImage,
       "blockNetworkLoads": blockNetworkLoads,
-      "cacheMode": cacheMode?.toValue(),
+      "cacheMode": cacheMode?.toNativeValue(),
       "cursiveFontFamily": cursiveFontFamily,
       "defaultFixedFontSize": defaultFixedFontSize,
       "defaultFontSize": defaultFontSize,
       "defaultTextEncodingName": defaultTextEncodingName,
-      "disabledActionModeMenuItems": disabledActionModeMenuItems?.toValue(),
+      "disabledActionModeMenuItems": disabledActionModeMenuItems?.toNativeValue(),
       "fantasyFontFamily": fantasyFontFamily,
       "fixedFontFamily": fixedFontFamily,
-      "forceDark": forceDark?.toValue(),
+      "forceDark": forceDark?.toNativeValue(),
       "geolocationEnabled": geolocationEnabled,
-      "layoutAlgorithm": layoutAlgorithm?.toValue(),
+      "layoutAlgorithm": layoutAlgorithm?.toNativeValue(),
       "loadWithOverviewMode": loadWithOverviewMode,
       "loadsImagesAutomatically": loadsImagesAutomatically,
       "minimumLogicalFontSize": minimumLogicalFontSize,
@@ -341,10 +341,10 @@ class AndroidInAppWebViewOptions
       "regexToCancelSubFramesLoading": regexToCancelSubFramesLoading,
       "useShouldInterceptRequest": useShouldInterceptRequest,
       "useOnRenderProcessGone": useOnRenderProcessGone,
-      "overScrollMode": overScrollMode?.toValue(),
+      "overScrollMode": overScrollMode?.toNativeValue(),
       "networkAvailable": networkAvailable,
-      "scrollBarStyle": scrollBarStyle?.toValue(),
-      "verticalScrollbarPosition": verticalScrollbarPosition?.toValue(),
+      "scrollBarStyle": scrollBarStyle?.toNativeValue(),
+      "verticalScrollbarPosition": verticalScrollbarPosition?.toNativeValue(),
       "scrollBarDefaultDelayBeforeFade": scrollBarDefaultDelayBeforeFade,
       "scrollbarFadingEnabled": scrollbarFadingEnabled,
       "scrollBarFadeDuration": scrollBarFadeDuration,
@@ -368,25 +368,25 @@ class AndroidInAppWebViewOptions
     instance.useWideViewPort = map["useWideViewPort"];
     instance.safeBrowsingEnabled = map["safeBrowsingEnabled"];
     instance.mixedContentMode =
-        AndroidMixedContentMode.fromValue(map["mixedContentMode"]);
+        AndroidMixedContentMode.fromNativeValue(map["mixedContentMode"]);
     instance.allowContentAccess = map["allowContentAccess"];
     instance.allowFileAccess = map["allowFileAccess"];
     instance.appCachePath = map["appCachePath"];
     instance.blockNetworkImage = map["blockNetworkImage"];
     instance.blockNetworkLoads = map["blockNetworkLoads"];
-    instance.cacheMode = AndroidCacheMode.fromValue(map["cacheMode"]);
+    instance.cacheMode = AndroidCacheMode.fromNativeValue(map["cacheMode"]);
     instance.cursiveFontFamily = map["cursiveFontFamily"];
     instance.defaultFixedFontSize = map["defaultFixedFontSize"];
     instance.defaultFontSize = map["defaultFontSize"];
     instance.defaultTextEncodingName = map["defaultTextEncodingName"];
     instance.disabledActionModeMenuItems =
-        AndroidActionModeMenuItem.fromValue(map["disabledActionModeMenuItems"]);
+        AndroidActionModeMenuItem.fromNativeValue(map["disabledActionModeMenuItems"]);
     instance.fantasyFontFamily = map["fantasyFontFamily"];
     instance.fixedFontFamily = map["fixedFontFamily"];
-    instance.forceDark = AndroidForceDark.fromValue(map["forceDark"]);
+    instance.forceDark = AndroidForceDark.fromNativeValue(map["forceDark"]);
     instance.geolocationEnabled = map["geolocationEnabled"];
     instance.layoutAlgorithm =
-        AndroidLayoutAlgorithm.fromValue(map["layoutAlgorithm"]);
+        AndroidLayoutAlgorithm.fromNativeValue(map["layoutAlgorithm"]);
     instance.loadWithOverviewMode = map["loadWithOverviewMode"];
     instance.loadsImagesAutomatically = map["loadsImagesAutomatically"];
     instance.minimumLogicalFontSize = map["minimumLogicalFontSize"];
@@ -406,12 +406,12 @@ class AndroidInAppWebViewOptions
     instance.useShouldInterceptRequest = map["useShouldInterceptRequest"];
     instance.useOnRenderProcessGone = map["useOnRenderProcessGone"];
     instance.overScrollMode =
-        AndroidOverScrollMode.fromValue(map["overScrollMode"]);
+        AndroidOverScrollMode.fromNativeValue(map["overScrollMode"]);
     instance.networkAvailable = map["networkAvailable"];
     instance.scrollBarStyle =
-        AndroidScrollBarStyle.fromValue(map["scrollBarStyle"]);
+        AndroidScrollBarStyle.fromNativeValue(map["scrollBarStyle"]);
     instance.verticalScrollbarPosition =
-        AndroidVerticalScrollbarPosition.fromValue(
+        AndroidVerticalScrollbarPosition.fromNativeValue(
             map["verticalScrollbarPosition"]);
     instance.scrollBarDefaultDelayBeforeFade =
         map["scrollBarDefaultDelayBeforeFade"];

lib/src/in_app_webview/apple/in_app_webview_options.dart

@@ -196,8 +196,8 @@ class IOSInAppWebViewOptions
   ///- [IOSInAppWebViewOptions.enableViewportScale]
   ///
   ///Events affected:
-  ///- the `hitTestResult` argument of [WebView.onLongPressHitTestResult] will be empty
-  ///- the `hitTestResult` argument of [ContextMenu.onCreateContextMenu] will be empty
+  ///- the `hitTestResult` argument of [WebView.onLongPressHitTestResult] will be empty
+  ///- the `hitTestResult` argument of [ContextMenu.onCreateContextMenu] will be empty
   ///- [WebView.onLoadResource]
   ///- [WebView.shouldInterceptAjaxRequest]
   ///- [WebView.onAjaxReadyStateChange]
@@ -214,7 +214,7 @@ class IOSInAppWebViewOptions
 
   ///Used in combination with [WebView.initialUrlRequest] or [WebView.initialData] (using the `file://` scheme), it represents the URL from which to read the web content.
   ///This URL must be a file-based URL (using the `file://` scheme).
-  ///Specify the same value as the [URLRequest.url] if you are using it with the [WebView.initialUrlRequest] parameter or
+  ///Specify the same value as the [URLRequest.url] if you are using it with the [WebView.initialUrlRequest] parameter or
   ///the [InAppWebViewInitialData.baseUrl] if you are using it with the [WebView.initialData] parameter to prevent WebView from reading any other content.
   ///Specify a directory to give WebView permission to read additional files in the specified directory.
   Uri? allowingReadAccessTo;
@@ -270,7 +270,7 @@ class IOSInAppWebViewOptions
   Map<String, dynamic> toMap() {
     List<String> dataDetectorTypesList = [];
     dataDetectorTypes.forEach((dataDetectorType) {
-      dataDetectorTypesList.add(dataDetectorType.toValue());
+      dataDetectorTypesList.add(dataDetectorType.toNativeValue());
     });
 
     return {
@@ -286,13 +286,13 @@ class IOSInAppWebViewOptions
       "allowsPictureInPictureMediaPlayback":
           allowsPictureInPictureMediaPlayback,
       "isFraudulentWebsiteWarningEnabled": isFraudulentWebsiteWarningEnabled,
-      "selectionGranularity": selectionGranularity.toValue(),
+      "selectionGranularity": selectionGranularity.toNativeValue(),
       "dataDetectorTypes": dataDetectorTypesList,
       "sharedCookiesEnabled": sharedCookiesEnabled,
       "automaticallyAdjustsScrollIndicatorInsets":
           automaticallyAdjustsScrollIndicatorInsets,
       "accessibilityIgnoresInvertColors": accessibilityIgnoresInvertColors,
-      "decelerationRate": decelerationRate.toValue(),
+      "decelerationRate": decelerationRate.toNativeValue(),
       "alwaysBounceVertical": alwaysBounceVertical,
       "alwaysBounceHorizontal": alwaysBounceHorizontal,
       "scrollsToTop": scrollsToTop,
@@ -300,7 +300,7 @@ class IOSInAppWebViewOptions
       "maximumZoomScale": maximumZoomScale,
       "minimumZoomScale": minimumZoomScale,
       "contentInsetAdjustmentBehavior":
-          contentInsetAdjustmentBehavior.toValue(),
+          contentInsetAdjustmentBehavior.toNativeValue(),
       "isDirectionalLockEnabled": isDirectionalLockEnabled,
       "mediaType": mediaType,
       "pageZoom": pageZoom,
@@ -319,7 +319,7 @@ class IOSInAppWebViewOptions
         List<String>.from(map["dataDetectorTypes"] ?? []);
     dataDetectorTypesList.forEach((dataDetectorTypeValue) {
       var dataDetectorType =
-          IOSWKDataDetectorTypes.fromValue(dataDetectorTypeValue);
+          IOSWKDataDetectorTypes.fromNativeValue(dataDetectorTypeValue);
       if (dataDetectorType != null) {
         dataDetectorTypes.add(dataDetectorType);
       }
@@ -342,7 +342,7 @@ class IOSInAppWebViewOptions
     instance.isFraudulentWebsiteWarningEnabled =
         map["isFraudulentWebsiteWarningEnabled"];
     instance.selectionGranularity =
-        IOSWKSelectionGranularity.fromValue(map["selectionGranularity"])!;
+        IOSWKSelectionGranularity.fromNativeValue(map["selectionGranularity"])!;
     instance.dataDetectorTypes = dataDetectorTypes;
     instance.sharedCookiesEnabled = map["sharedCookiesEnabled"];
     instance.automaticallyAdjustsScrollIndicatorInsets =
@@ -350,7 +350,7 @@ class IOSInAppWebViewOptions
     instance.accessibilityIgnoresInvertColors =
         map["accessibilityIgnoresInvertColors"];
     instance.decelerationRate =
-        IOSUIScrollViewDecelerationRate.fromValue(map["decelerationRate"])!;
+        IOSUIScrollViewDecelerationRate.fromNativeValue(map["decelerationRate"])!;
     instance.alwaysBounceVertical = map["alwaysBounceVertical"];
     instance.alwaysBounceHorizontal = map["alwaysBounceHorizontal"];
     instance.scrollsToTop = map["scrollsToTop"];
@@ -358,7 +358,7 @@ class IOSInAppWebViewOptions
     instance.maximumZoomScale = map["maximumZoomScale"];
     instance.minimumZoomScale = map["minimumZoomScale"];
     instance.contentInsetAdjustmentBehavior =
-        IOSUIScrollViewContentInsetAdjustmentBehavior.fromValue(
+        IOSUIScrollViewContentInsetAdjustmentBehavior.fromNativeValue(
             map["contentInsetAdjustmentBehavior"])!;
     instance.isDirectionalLockEnabled = map["isDirectionalLockEnabled"];
     instance.mediaType = map["mediaType"];

lib/src/in_app_webview/headless_in_app_webview.dart

@@ -159,7 +159,14 @@ class HeadlessInAppWebView implements WebView, Disposable {
     webViewController = new InAppWebViewController(id, this);
     this._channel =
         MethodChannel('com.pichillilorenzo/flutter_headless_inappwebview_$id');
-    this._channel.setMethodCallHandler(handleMethod);
+    this._channel.setMethodCallHandler((call) async {
+      try {
+        return await handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
   }
 
   Future<dynamic> handleMethod(MethodCall call) async {
@@ -212,7 +219,7 @@ class HeadlessInAppWebView implements WebView, Disposable {
               'initialSettings': initialSettings,
               'contextMenu': this.contextMenu?.toMap() ?? {},
               'windowId': this.windowId,
-              'implementation': this.implementation.toValue(),
+              'implementation': this.implementation.toNativeValue(),
               'initialUserScripts':
                   this.initialUserScripts?.map((e) => e.toMap()).toList() ?? [],
               'pullToRefreshSettings': pullToRefreshSettings,

lib/src/in_app_webview/in_app_webview.dart

@@ -646,7 +646,7 @@ class _InAppWebViewState extends State<InAppWebView> {
                 'initialSettings': initialSettings,
                 'contextMenu': widget.contextMenu?.toMap() ?? {},
                 'windowId': widget.windowId,
-                'implementation': widget.implementation.toValue(),
+                'implementation': widget.implementation.toNativeValue(),
                 'initialUserScripts':
                     widget.initialUserScripts?.map((e) => e.toMap()).toList() ??
                         [],
@@ -673,7 +673,7 @@ class _InAppWebViewState extends State<InAppWebView> {
             'initialSettings': initialSettings,
             'contextMenu': widget.contextMenu?.toMap() ?? {},
             'windowId': widget.windowId,
-            'implementation': widget.implementation.toValue(),
+            'implementation': widget.implementation.toNativeValue(),
             'initialUserScripts':
                 widget.initialUserScripts?.map((e) => e.toMap()).toList() ?? [],
             'pullToRefreshSettings': pullToRefreshSettings
@@ -693,7 +693,7 @@ class _InAppWebViewState extends State<InAppWebView> {
           'initialSettings': initialSettings,
           'contextMenu': widget.contextMenu?.toMap() ?? {},
           'windowId': widget.windowId,
-          'implementation': widget.implementation.toValue(),
+          'implementation': widget.implementation.toNativeValue(),
           'initialUserScripts':
               widget.initialUserScripts?.map((e) => e.toMap()).toList() ?? [],
           'pullToRefreshSettings': pullToRefreshSettings

lib/src/in_app_webview/in_app_webview_controller.dart

@@ -78,7 +78,14 @@ class InAppWebViewController {
     this._id = id;
     this._channel =
         MethodChannel('com.pichillilorenzo/flutter_inappwebview_$id');
-    this._channel.setMethodCallHandler(handleMethod);
+    this._channel.setMethodCallHandler((call) async {
+      try {
+        return await handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     this._webview = webview;
     this._userScripts =
         List<UserScript>.from(webview.initialUserScripts ?? <UserScript>[]);
@@ -123,7 +130,11 @@ class InAppWebViewController {
       if (maxLogMessageLength >= 0 && message.length > maxLogMessageLength) {
         message = message.substring(0, maxLogMessageLength) + "...";
       }
-      developer.log(message, name: this.runtimeType.toString());
+      if (!WebView.debugLoggingSettings.usePrint) {
+        developer.log(message, name: this.runtimeType.toString());
+      } else {
+        print("[${this.runtimeType.toString()}] $message");
+      }
     }
   }
 
@@ -175,13 +186,13 @@ class InAppWebViewController {
             else if (isForMainFrame) {
               // ignore: deprecated_member_use_from_same_package
               _webview!.onLoadError!(this, request.url,
-                  error.type.toNativeValue(), error.description);
+                  error.type.toNativeValue() ?? -1, error.description);
             }
           } else {
             if (isForMainFrame) {
               _inAppBrowser!
                   // ignore: deprecated_member_use_from_same_package
-                  .onLoadError(request.url, error.type.toNativeValue(),
+                  .onLoadError(request.url, error.type.toNativeValue() ?? -1,
                       error.description);
             }
             _inAppBrowser!.onReceivedError(request, error);
@@ -243,10 +254,10 @@ class InAppWebViewController {
           if (_webview != null && _webview!.shouldOverrideUrlLoading != null)
             return (await _webview!.shouldOverrideUrlLoading!(
                     this, navigationAction))
-                ?.toMap();
+                ?.toNativeValue();
           return (await _inAppBrowser!
                   .shouldOverrideUrlLoading(navigationAction))
-              ?.toMap();
+              ?.toNativeValue();
         }
         break;
       case "onConsoleMessage":
@@ -445,19 +456,19 @@ class InAppWebViewController {
           if (_webview != null) {
             if (_webview!.onRenderProcessUnresponsive != null)
               return (await _webview!.onRenderProcessUnresponsive!(this, uri))
-                  ?.toMap();
+                  ?.toNativeValue();
             else {
               // ignore: deprecated_member_use_from_same_package
               return (await _webview!.androidOnRenderProcessUnresponsive!(
                       this, uri))
-                  ?.toMap();
+                  ?.toNativeValue();
             }
           } else {
             return ((await _inAppBrowser!.onRenderProcessUnresponsive(uri)) ??
                     (await _inAppBrowser!
                         // ignore: deprecated_member_use_from_same_package
                         .androidOnRenderProcessUnresponsive(uri)))
-                ?.toMap();
+                ?.toNativeValue();
           }
         }
         break;
@@ -473,19 +484,19 @@ class InAppWebViewController {
           if (_webview != null) {
             if (_webview!.onRenderProcessResponsive != null)
               return (await _webview!.onRenderProcessResponsive!(this, uri))
-                  ?.toMap();
+                  ?.toNativeValue();
             else {
               // ignore: deprecated_member_use_from_same_package
               return (await _webview!.androidOnRenderProcessResponsive!(
                       this, uri))
-                  ?.toMap();
+                  ?.toNativeValue();
             }
           } else {
             return ((await _inAppBrowser!.onRenderProcessResponsive(uri)) ??
                     (await _inAppBrowser!
                         // ignore: deprecated_member_use_from_same_package
                         .androidOnRenderProcessResponsive(uri)))
-                ?.toMap();
+                ?.toNativeValue();
           }
         }
         break;
@@ -525,17 +536,17 @@ class InAppWebViewController {
 
           if (_webview != null) {
             if (_webview!.onFormResubmission != null)
-              return (await _webview!.onFormResubmission!(this, uri))?.toMap();
+              return (await _webview!.onFormResubmission!(this, uri))?.toNativeValue();
             else {
               // ignore: deprecated_member_use_from_same_package
               return (await _webview!.androidOnFormResubmission!(this, uri))
-                  ?.toMap();
+                  ?.toNativeValue();
             }
           } else {
             return ((await _inAppBrowser!.onFormResubmission(uri)) ??
                     // ignore: deprecated_member_use_from_same_package
                     (await _inAppBrowser!.androidOnFormResubmission(uri)))
-                ?.toMap();
+                ?.toNativeValue();
           }
         }
         break;
@@ -692,7 +703,7 @@ class InAppWebViewController {
             _inAppBrowser != null) {
           String url = call.arguments["url"];
           SafeBrowsingThreat? threatType =
-              SafeBrowsingThreat.fromValue(call.arguments["threatType"]);
+              SafeBrowsingThreat.fromNativeValue(call.arguments["threatType"]);
           Uri uri = Uri.parse(url);
 
           if (_webview != null) {
@@ -924,21 +935,21 @@ class InAppWebViewController {
             if (_webview!.onNavigationResponse != null)
               return (await _webview!.onNavigationResponse!(
                       this, navigationResponse))
-                  ?.toMap();
+                  ?.toNativeValue();
             else {
               // ignore: deprecated_member_use_from_same_package
               return (await _webview!.iosOnNavigationResponse!(
                       this, iosOnNavigationResponse))
-                  ?.toMap();
+                  ?.toNativeValue();
             }
           } else {
             return (await _inAppBrowser!
                         .onNavigationResponse(navigationResponse))
-                    ?.toMap() ??
+                    ?.toNativeValue() ??
                 (await _inAppBrowser!
                         // ignore: deprecated_member_use_from_same_package
                         .iosOnNavigationResponse(iosOnNavigationResponse))
-                    ?.toMap();
+                    ?.toNativeValue();
           }
         }
         break;
@@ -957,19 +968,19 @@ class InAppWebViewController {
             if (_webview!.shouldAllowDeprecatedTLS != null)
               return (await _webview!.shouldAllowDeprecatedTLS!(
                       this, challenge))
-                  ?.toMap();
+                  ?.toNativeValue();
             else {
               // ignore: deprecated_member_use_from_same_package
               return (await _webview!.iosShouldAllowDeprecatedTLS!(
                       this, challenge))
-                  ?.toMap();
+                  ?.toNativeValue();
             }
           } else {
             return (await _inAppBrowser!.shouldAllowDeprecatedTLS(challenge))
-                    ?.toMap() ??
+                    ?.toNativeValue() ??
                 // ignore: deprecated_member_use_from_same_package
                 (await _inAppBrowser!.iosShouldAllowDeprecatedTLS(challenge))
-                    ?.toMap();
+                    ?.toNativeValue();
           }
         }
         break;
@@ -1139,9 +1150,9 @@ class InAppWebViewController {
                 _webview!.onCameraCaptureStateChanged != null) ||
             _inAppBrowser != null) {
           var oldState =
-              MediaCaptureState.fromValue(call.arguments["oldState"]);
+              MediaCaptureState.fromNativeValue(call.arguments["oldState"]);
           var newState =
-              MediaCaptureState.fromValue(call.arguments["newState"]);
+              MediaCaptureState.fromNativeValue(call.arguments["newState"]);
 
           if (_webview != null && _webview!.onCameraCaptureStateChanged != null)
             _webview!.onCameraCaptureStateChanged!(this, oldState, newState);
@@ -1154,9 +1165,9 @@ class InAppWebViewController {
                 _webview!.onMicrophoneCaptureStateChanged != null) ||
             _inAppBrowser != null) {
           var oldState =
-              MediaCaptureState.fromValue(call.arguments["oldState"]);
+              MediaCaptureState.fromNativeValue(call.arguments["oldState"]);
           var newState =
-              MediaCaptureState.fromValue(call.arguments["newState"]);
+              MediaCaptureState.fromNativeValue(call.arguments["newState"]);
 
           if (_webview != null &&
               _webview!.onMicrophoneCaptureStateChanged != null)
@@ -1217,11 +1228,9 @@ class InAppWebViewController {
               AjaxRequest request = AjaxRequest.fromMap(arguments)!;
 
               if (_webview != null && _webview!.onAjaxReadyStateChange != null)
-                return jsonEncode(
-                    await _webview!.onAjaxReadyStateChange!(this, request));
+                return (await _webview!.onAjaxReadyStateChange!(this, request))?.toNativeValue();
               else
-                return jsonEncode(
-                    await _inAppBrowser!.onAjaxReadyStateChange(request));
+                return (await _inAppBrowser!.onAjaxReadyStateChange(request))?.toNativeValue();
             }
             return null;
           case "onAjaxProgress":
@@ -1231,10 +1240,9 @@ class InAppWebViewController {
               AjaxRequest request = AjaxRequest.fromMap(arguments)!;
 
               if (_webview != null && _webview!.onAjaxProgress != null)
-                return jsonEncode(
-                    await _webview!.onAjaxProgress!(this, request));
+                return (await _webview!.onAjaxProgress!(this, request))?.toNativeValue();
               else
-                return jsonEncode(await _inAppBrowser!.onAjaxProgress(request));
+                return (await _inAppBrowser!.onAjaxProgress(request))?.toNativeValue();
             }
             return null;
           case "shouldInterceptFetchRequest":
@@ -2281,7 +2289,7 @@ class InAppWebViewController {
   ///Prints the current page.
   ///
   ///To obtain the [PrintJobController], use [settings] argument with [PrintJobSettings.handledByClient] to `true`.
-  ///Otherwise this method will return `null` and the [PrintJobController] will be handled and disposed automatically by the system.
+  ///Otherwise this method will return `null` and the [PrintJobController] will be handled and disposed automatically by the system.
   ///
   ///**NOTE**: available on Android 19+.
   ///
@@ -2418,7 +2426,7 @@ class InAppWebViewController {
     hitTestResultMap = hitTestResultMap.cast<String, dynamic>();
 
     InAppWebViewHitTestResultType? type =
-        InAppWebViewHitTestResultType.fromValue(
+        InAppWebViewHitTestResultType.fromNativeValue(
             hitTestResultMap["type"]?.toInt());
     String? extra = hitTestResultMap["extra"];
     return InAppWebViewHitTestResult(type: type, extra: extra);
@@ -2823,9 +2831,9 @@ class InAppWebViewController {
   ///[autoname] if `false`, takes [filePath] to be a file.
   ///If `true`, [filePath] is assumed to be a directory in which a filename will be chosen according to the URL of the current page.
   ///
-  ///**NOTE for iOS**: Available on iOS 14.0+. If [autoname] is `false`, the [filePath] must ends with the [WebArchiveFormat.WEBARCHIVE] file extension.
+  ///**NOTE for iOS**: Available on iOS 14.0+. If [autoname] is `false`, the [filePath] must ends with the [WebArchiveFormat.WEBARCHIVE] file extension.
   ///
-  ///**NOTE for Android**: if [autoname] is `false`, the [filePath] must ends with the [WebArchiveFormat.MHT] file extension.
+  ///**NOTE for Android**: if [autoname] is `false`, the [filePath] must ends with the [WebArchiveFormat.MHT] file extension.
   ///
   ///**Supported Platforms/Implementations**:
   ///- Android native WebView ([Official API - WebView.saveWebArchive](https://developer.android.com/reference/android/webkit/WebView#saveWebArchive(java.lang.String,%20boolean,%20android.webkit.ValueCallback%3Cjava.lang.String%3E)))
@@ -2834,9 +2842,9 @@ class InAppWebViewController {
       {required String filePath, bool autoname = false}) async {
     if (!autoname) {
       if (defaultTargetPlatform == TargetPlatform.android) {
-        assert(filePath.endsWith("." + WebArchiveFormat.MHT.toValue()));
+        assert(filePath.endsWith("." + WebArchiveFormat.MHT.toNativeValue()));
       } else if (defaultTargetPlatform == TargetPlatform.iOS) {
-        assert(filePath.endsWith("." + WebArchiveFormat.WEBARCHIVE.toValue()));
+        assert(filePath.endsWith("." + WebArchiveFormat.WEBARCHIVE.toNativeValue()));
       }
     }
 
@@ -3303,7 +3311,7 @@ class InAppWebViewController {
   ///- iOS ([Official API - WKWebView.requestMediaPlaybackState](https://developer.apple.com/documentation/webkit/wkwebview/3752241-requestmediaplaybackstate)).
   Future<MediaPlaybackState?> requestMediaPlaybackState() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return MediaPlaybackState.fromValue(
+    return MediaPlaybackState.fromNativeValue(
         await _channel.invokeMethod('requestMediaPlaybackState', args));
   }
 
@@ -3325,7 +3333,7 @@ class InAppWebViewController {
   ///- iOS ([Official API - WKWebView.cameraCaptureState](https://developer.apple.com/documentation/webkit/wkwebview/3763093-cameracapturestate)).
   Future<MediaCaptureState?> getCameraCaptureState() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return MediaCaptureState.fromValue(
+    return MediaCaptureState.fromNativeValue(
         await _channel.invokeMethod('getCameraCaptureState', args));
   }
 
@@ -3337,7 +3345,7 @@ class InAppWebViewController {
   ///- iOS ([Official API - WKWebView.setCameraCaptureState](https://developer.apple.com/documentation/webkit/wkwebview/3763097-setcameracapturestate)).
   Future<void> setCameraCaptureState({required MediaCaptureState state}) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent('state', () => state.toValue());
+    args.putIfAbsent('state', () => state.toNativeValue());
     await _channel.invokeMethod('setCameraCaptureState', args);
   }
 
@@ -3349,7 +3357,7 @@ class InAppWebViewController {
   ///- iOS ([Official API - WKWebView.microphoneCaptureState](https://developer.apple.com/documentation/webkit/wkwebview/3763096-microphonecapturestate)).
   Future<MediaCaptureState?> getMicrophoneCaptureState() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return MediaCaptureState.fromValue(
+    return MediaCaptureState.fromNativeValue(
         await _channel.invokeMethod('getMicrophoneCaptureState', args));
   }
 
@@ -3362,7 +3370,7 @@ class InAppWebViewController {
   Future<void> setMicrophoneCaptureState(
       {required MediaCaptureState state}) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent('state', () => state.toValue());
+    args.putIfAbsent('state', () => state.toNativeValue());
     await _channel.invokeMethod('setMicrophoneCaptureState', args);
   }
 

lib/src/in_app_webview/in_app_webview_settings.dart

@@ -916,8 +916,8 @@ class InAppWebViewSettings {
   ///- [InAppWebViewSettings.enableViewportScale]
   ///
   ///Events affected:
-  ///- the `hitTestResult` argument of [WebView.onLongPressHitTestResult] will be empty
-  ///- the `hitTestResult` argument of [ContextMenu.onCreateContextMenu] will be empty
+  ///- the `hitTestResult` argument of [WebView.onLongPressHitTestResult] will be empty
+  ///- the `hitTestResult` argument of [ContextMenu.onCreateContextMenu] will be empty
   ///- [WebView.onLoadResource]
   ///- [WebView.shouldInterceptAjaxRequest]
   ///- [WebView.onAjaxReadyStateChange]
@@ -937,7 +937,7 @@ class InAppWebViewSettings {
 
   ///Used in combination with [WebView.initialUrlRequest] or [WebView.initialData] (using the `file://` scheme), it represents the URL from which to read the web content.
   ///This URL must be a file-based URL (using the `file://` scheme).
-  ///Specify the same value as the [URLRequest.url] if you are using it with the [WebView.initialUrlRequest] parameter or
+  ///Specify the same value as the [URLRequest.url] if you are using it with the [WebView.initialUrlRequest] parameter or
   ///the [InAppWebViewInitialData.baseUrl] if you are using it with the [WebView.initialData] parameter to prevent WebView from reading any other content.
   ///Specify a directory to give WebView permission to read additional files in the specified directory.
   ///
@@ -1108,7 +1108,7 @@ class InAppWebViewSettings {
     this.useHybridComposition = true,
     this.useShouldInterceptRequest = false,
     this.useOnRenderProcessGone = false,
-    this.overScrollMode = OverScrollMode.OVER_SCROLL_IF_CONTENT_SCROLLS,
+    this.overScrollMode = OverScrollMode.IF_CONTENT_SCROLLS,
     this.networkAvailable,
     this.scrollBarStyle = ScrollBarStyle.SCROLLBARS_INSIDE_OVERLAY,
     this.verticalScrollbarPosition =
@@ -1182,7 +1182,7 @@ class InAppWebViewSettings {
     });
     List<String> dataDetectorTypesList = [];
     dataDetectorTypes.forEach((dataDetectorType) {
-      dataDetectorTypesList.add(dataDetectorType.toValue());
+      dataDetectorTypesList.add(dataDetectorType.toNativeValue());
     });
 
     return {
@@ -1200,7 +1200,7 @@ class InAppWebViewSettings {
       "horizontalScrollBarEnabled": horizontalScrollBarEnabled,
       "resourceCustomSchemes": resourceCustomSchemes,
       "contentBlockers": contentBlockersMapList,
-      "preferredContentMode": preferredContentMode?.toValue(),
+      "preferredContentMode": preferredContentMode?.toNativeValue(),
       "useShouldInterceptAjaxRequest": useShouldInterceptAjaxRequest,
       "useShouldInterceptFetchRequest": useShouldInterceptFetchRequest,
       "incognito": incognito,
@@ -1220,24 +1220,24 @@ class InAppWebViewSettings {
       "domStorageEnabled": domStorageEnabled,
       "useWideViewPort": useWideViewPort,
       "safeBrowsingEnabled": safeBrowsingEnabled,
-      "mixedContentMode": mixedContentMode?.toValue(),
+      "mixedContentMode": mixedContentMode?.toNativeValue(),
       "allowContentAccess": allowContentAccess,
       "allowFileAccess": allowFileAccess,
       "appCachePath": appCachePath,
       "blockNetworkImage": blockNetworkImage,
       "blockNetworkLoads": blockNetworkLoads,
-      "cacheMode": cacheMode?.toValue(),
+      "cacheMode": cacheMode?.toNativeValue(),
       "cursiveFontFamily": cursiveFontFamily,
       "defaultFixedFontSize": defaultFixedFontSize,
       "defaultFontSize": defaultFontSize,
       "defaultTextEncodingName": defaultTextEncodingName,
-      "disabledActionModeMenuItems": disabledActionModeMenuItems?.toValue(),
+      "disabledActionModeMenuItems": disabledActionModeMenuItems?.toNativeValue(),
       "fantasyFontFamily": fantasyFontFamily,
       "fixedFontFamily": fixedFontFamily,
-      "forceDark": forceDark?.toValue(),
-      "forceDarkStrategy": forceDarkStrategy?.toValue(),
+      "forceDark": forceDark?.toNativeValue(),
+      "forceDarkStrategy": forceDarkStrategy?.toNativeValue(),
       "geolocationEnabled": geolocationEnabled,
-      "layoutAlgorithm": layoutAlgorithm?.toValue(),
+      "layoutAlgorithm": layoutAlgorithm?.toNativeValue(),
       "loadWithOverviewMode": loadWithOverviewMode,
       "loadsImagesAutomatically": loadsImagesAutomatically,
       "minimumLogicalFontSize": minimumLogicalFontSize,
@@ -1255,10 +1255,10 @@ class InAppWebViewSettings {
       "regexToCancelSubFramesLoading": regexToCancelSubFramesLoading,
       "useShouldInterceptRequest": useShouldInterceptRequest,
       "useOnRenderProcessGone": useOnRenderProcessGone,
-      "overScrollMode": overScrollMode?.toValue(),
+      "overScrollMode": overScrollMode?.toNativeValue(),
       "networkAvailable": networkAvailable,
-      "scrollBarStyle": scrollBarStyle?.toValue(),
-      "verticalScrollbarPosition": verticalScrollbarPosition?.toValue(),
+      "scrollBarStyle": scrollBarStyle?.toNativeValue(),
+      "verticalScrollbarPosition": verticalScrollbarPosition?.toNativeValue(),
       "scrollBarDefaultDelayBeforeFade": scrollBarDefaultDelayBeforeFade,
       "scrollbarFadingEnabled": scrollbarFadingEnabled,
       "scrollBarFadeDuration": scrollBarFadeDuration,
@@ -1280,13 +1280,13 @@ class InAppWebViewSettings {
       "allowsPictureInPictureMediaPlayback":
           allowsPictureInPictureMediaPlayback,
       "isFraudulentWebsiteWarningEnabled": isFraudulentWebsiteWarningEnabled,
-      "selectionGranularity": selectionGranularity.toValue(),
+      "selectionGranularity": selectionGranularity.toNativeValue(),
       "dataDetectorTypes": dataDetectorTypesList,
       "sharedCookiesEnabled": sharedCookiesEnabled,
       "automaticallyAdjustsScrollIndicatorInsets":
           automaticallyAdjustsScrollIndicatorInsets,
       "accessibilityIgnoresInvertColors": accessibilityIgnoresInvertColors,
-      "decelerationRate": decelerationRate.toValue(),
+      "decelerationRate": decelerationRate.toNativeValue(),
       "alwaysBounceVertical": alwaysBounceVertical,
       "alwaysBounceHorizontal": alwaysBounceHorizontal,
       "scrollsToTop": scrollsToTop,
@@ -1294,7 +1294,7 @@ class InAppWebViewSettings {
       "maximumZoomScale": maximumZoomScale,
       "minimumZoomScale": minimumZoomScale,
       "contentInsetAdjustmentBehavior":
-          contentInsetAdjustmentBehavior.toValue(),
+          contentInsetAdjustmentBehavior.toNativeValue(),
       "isDirectionalLockEnabled": isDirectionalLockEnabled,
       "mediaType": mediaType,
       "pageZoom": pageZoom,
@@ -1310,7 +1310,7 @@ class InAppWebViewSettings {
       "upgradeKnownHostsToHTTPS": upgradeKnownHostsToHTTPS,
       "iframeAllow": iframeAllow,
       "iframeAllowFullscreen": iframeAllowFullscreen,
-      "iframeSandbox": iframeSandbox?.map((e) => e.toValue()).toList(),
+      "iframeSandbox": iframeSandbox?.map((e) => e.toNativeValue()).toList(),
       "iframeReferrerPolicy": iframeReferrerPolicy,
       "iframeName": iframeName,
       "iframeCsp": iframeCsp,
@@ -1332,7 +1332,7 @@ class InAppWebViewSettings {
     List<String> dataDetectorTypesList =
         List<String>.from(map["dataDetectorTypes"] ?? []);
     dataDetectorTypesList.forEach((dataDetectorTypeValue) {
-      var dataDetectorType = DataDetectorTypes.fromValue(dataDetectorTypeValue);
+      var dataDetectorType = DataDetectorTypes.fromNativeValue(dataDetectorTypeValue);
       if (dataDetectorType != null) {
         dataDetectorTypes.add(dataDetectorType);
       }
@@ -1356,7 +1356,7 @@ class InAppWebViewSettings {
         List<String>.from(map["resourceCustomSchemes"] ?? []);
     settings.contentBlockers = contentBlockers;
     settings.preferredContentMode =
-        UserPreferredContentMode.fromValue(map["preferredContentMode"]);
+        UserPreferredContentMode.fromNativeValue(map["preferredContentMode"]);
     settings.useShouldInterceptAjaxRequest =
         map["useShouldInterceptAjaxRequest"];
     settings.useShouldInterceptFetchRequest =
@@ -1376,10 +1376,10 @@ class InAppWebViewSettings {
       settings.iframeAllowFullscreen = map["iframeAllowFullscreen"];
       settings.iframeSandbox = map["iframeSandbox"] != null
           ? Set.from((map["iframeSandbox"].cast<String>() as List<String>)
-              .map((e) => Sandbox.fromValue(e)))
+              .map((e) => Sandbox.fromNativeValue(e)))
           : null;
       settings.iframeReferrerPolicy =
-          ReferrerPolicy.fromValue(map["iframeReferrerPolicy"]);
+          ReferrerPolicy.fromNativeValue(map["iframeReferrerPolicy"]);
       settings.iframeName = map["iframeName"];
       settings.iframeCsp = map["iframeCsp"];
     } else {
@@ -1393,26 +1393,26 @@ class InAppWebViewSettings {
         settings.useWideViewPort = map["useWideViewPort"];
         settings.safeBrowsingEnabled = map["safeBrowsingEnabled"];
         settings.mixedContentMode =
-            MixedContentMode.fromValue(map["mixedContentMode"]);
+            MixedContentMode.fromNativeValue(map["mixedContentMode"]);
         settings.allowContentAccess = map["allowContentAccess"];
         settings.allowFileAccess = map["allowFileAccess"];
         settings.appCachePath = map["appCachePath"];
         settings.blockNetworkImage = map["blockNetworkImage"];
         settings.blockNetworkLoads = map["blockNetworkLoads"];
-        settings.cacheMode = CacheMode.fromValue(map["cacheMode"]);
+        settings.cacheMode = CacheMode.fromNativeValue(map["cacheMode"]);
         settings.cursiveFontFamily = map["cursiveFontFamily"];
         settings.defaultFixedFontSize = map["defaultFixedFontSize"];
         settings.defaultFontSize = map["defaultFontSize"];
         settings.defaultTextEncodingName = map["defaultTextEncodingName"];
         settings.disabledActionModeMenuItems =
-            ActionModeMenuItem.fromValue(map["disabledActionModeMenuItems"]);
+            ActionModeMenuItem.fromNativeValue(map["disabledActionModeMenuItems"]);
         settings.fantasyFontFamily = map["fantasyFontFamily"];
         settings.fixedFontFamily = map["fixedFontFamily"];
-        settings.forceDark = ForceDark.fromValue(map["forceDark"]);
-        settings.forceDarkStrategy = ForceDarkStrategy.fromValue(map["forceDarkStrategy"]);
+        settings.forceDark = ForceDark.fromNativeValue(map["forceDark"]);
+        settings.forceDarkStrategy = ForceDarkStrategy.fromNativeValue(map["forceDarkStrategy"]);
         settings.geolocationEnabled = map["geolocationEnabled"];
         settings.layoutAlgorithm =
-            LayoutAlgorithm.fromValue(map["layoutAlgorithm"]);
+            LayoutAlgorithm.fromNativeValue(map["layoutAlgorithm"]);
         settings.loadWithOverviewMode = map["loadWithOverviewMode"];
         settings.loadsImagesAutomatically = map["loadsImagesAutomatically"];
         settings.minimumLogicalFontSize = map["minimumLogicalFontSize"];
@@ -1431,11 +1431,11 @@ class InAppWebViewSettings {
         settings.useHybridComposition = map["useHybridComposition"];
         settings.useShouldInterceptRequest = map["useShouldInterceptRequest"];
         settings.useOnRenderProcessGone = map["useOnRenderProcessGone"];
-        settings.overScrollMode = OverScrollMode.fromValue(map["overScrollMode"]);
+        settings.overScrollMode = OverScrollMode.fromNativeValue(map["overScrollMode"]);
         settings.networkAvailable = map["networkAvailable"];
-        settings.scrollBarStyle = ScrollBarStyle.fromValue(map["scrollBarStyle"]);
+        settings.scrollBarStyle = ScrollBarStyle.fromNativeValue(map["scrollBarStyle"]);
         settings.verticalScrollbarPosition =
-            VerticalScrollbarPosition.fromValue(map["verticalScrollbarPosition"]);
+            VerticalScrollbarPosition.fromNativeValue(map["verticalScrollbarPosition"]);
         settings.scrollBarDefaultDelayBeforeFade =
         map["scrollBarDefaultDelayBeforeFade"];
         settings.scrollbarFadingEnabled = map["scrollbarFadingEnabled"];
@@ -1470,7 +1470,7 @@ class InAppWebViewSettings {
         settings.isFraudulentWebsiteWarningEnabled =
         map["isFraudulentWebsiteWarningEnabled"];
         settings.selectionGranularity =
-        SelectionGranularity.fromValue(map["selectionGranularity"])!;
+        SelectionGranularity.fromNativeValue(map["selectionGranularity"])!;
         settings.dataDetectorTypes = dataDetectorTypes;
         settings.sharedCookiesEnabled = map["sharedCookiesEnabled"];
         settings.automaticallyAdjustsScrollIndicatorInsets =
@@ -1478,7 +1478,7 @@ class InAppWebViewSettings {
         settings.accessibilityIgnoresInvertColors =
         map["accessibilityIgnoresInvertColors"];
         settings.decelerationRate =
-        ScrollViewDecelerationRate.fromValue(map["decelerationRate"])!;
+        ScrollViewDecelerationRate.fromNativeValue(map["decelerationRate"])!;
         settings.alwaysBounceVertical = map["alwaysBounceVertical"];
         settings.alwaysBounceHorizontal = map["alwaysBounceHorizontal"];
         settings.scrollsToTop = map["scrollsToTop"];
@@ -1486,7 +1486,7 @@ class InAppWebViewSettings {
         settings.maximumZoomScale = map["maximumZoomScale"];
         settings.minimumZoomScale = map["minimumZoomScale"];
         settings.contentInsetAdjustmentBehavior =
-        ScrollViewContentInsetAdjustmentBehavior.fromValue(
+        ScrollViewContentInsetAdjustmentBehavior.fromNativeValue(
             map["contentInsetAdjustmentBehavior"])!;
         settings.isDirectionalLockEnabled = map["isDirectionalLockEnabled"];
         settings.mediaType = map["mediaType"];
@@ -1782,7 +1782,7 @@ class InAppWebViewOptions
       "horizontalScrollBarEnabled": horizontalScrollBarEnabled,
       "resourceCustomSchemes": resourceCustomSchemes,
       "contentBlockers": contentBlockersMapList,
-      "preferredContentMode": preferredContentMode?.toValue(),
+      "preferredContentMode": preferredContentMode?.toNativeValue(),
       "useShouldInterceptAjaxRequest": useShouldInterceptAjaxRequest,
       "useShouldInterceptFetchRequest": useShouldInterceptFetchRequest,
       "incognito": incognito,
@@ -1826,7 +1826,7 @@ class InAppWebViewOptions
         List<String>.from(map["resourceCustomSchemes"] ?? []);
     instance.contentBlockers = contentBlockers;
     instance.preferredContentMode =
-        UserPreferredContentMode.fromValue(map["preferredContentMode"]);
+        UserPreferredContentMode.fromNativeValue(map["preferredContentMode"]);
     instance.useShouldInterceptAjaxRequest =
         map["useShouldInterceptAjaxRequest"];
     instance.useShouldInterceptFetchRequest =

lib/src/platform_util.dart

@@ -12,7 +12,14 @@ class PlatformUtil {
   }
 
   static PlatformUtil _init() {
-    _channel.setMethodCallHandler(_handleMethod);
+    _channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
     _instance = PlatformUtil();
     return _instance!;
   }

lib/src/print_job/print_job_controller.dart

@@ -23,7 +23,14 @@ class PrintJobController implements Disposable {
       {required this.id}) {
     this._channel = MethodChannel(
         'com.pichillilorenzo/flutter_inappwebview_printjobcontroller_$id');
-    this._channel.setMethodCallHandler(_handleMethod);
+    this._channel.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
   }
 
   Future<dynamic> _handleMethod(MethodCall call) async {

lib/src/print_job/print_job_settings.dart

@@ -6,7 +6,7 @@ import 'print_job_controller.dart';
 
 ///Class that represents the settings of a [PrintJobController].
 class PrintJobSettings {
-  ///Set this to `true` to handle the [PrintJobController].
+  ///Set this to `true` to handle the [PrintJobController].
   ///Otherwise, it will be handled and disposed automatically by the system.
   ///The default value is `false`.
   ///
@@ -183,17 +183,17 @@ class PrintJobSettings {
         handledByClient: map["handledByClient"],
         jobName: map["jobName"],
         animated: map["animated"],
-        orientation: PrintJobOrientation.fromValue(map["orientation"]),
+        orientation: PrintJobOrientation.fromNativeValue(map["orientation"]),
         numberOfPages: map["numberOfPages"],
         forceRenderingQuality:
-            PrintJobRenderingQuality.fromValue(map["forceRenderingQuality"]),
+            PrintJobRenderingQuality.fromNativeValue(map["forceRenderingQuality"]),
         margins:
             MapEdgeInsets.fromMap(map["margins"]?.cast<String, dynamic>()),
         mediaSize:
             PrintJobMediaSize.fromMap(map["mediaSize"]?.cast<String, dynamic>()),
-        colorMode: PrintJobColorMode.fromValue(map["colorMode"]),
+        colorMode: PrintJobColorMode.fromNativeValue(map["colorMode"]),
         duplexMode: PrintJobDuplexMode.fromNativeValue(map["duplexMode"]),
-        outputType: PrintJobOutputType.fromValue(map["outputType"]),
+        outputType: PrintJobOutputType.fromNativeValue(map["outputType"]),
         resolution:
             PrintJobResolution.fromMap(map["resolution"]?.cast<String, dynamic>()),
         showsNumberOfCopies: map["showsNumberOfCopies"],
@@ -212,14 +212,14 @@ class PrintJobSettings {
       "handledByClient": handledByClient,
       "jobName": jobName,
       "animated": animated,
-      "orientation": orientation?.toValue(),
+      "orientation": orientation?.toNativeValue(),
       "numberOfPages": numberOfPages,
-      "forceRenderingQuality": forceRenderingQuality?.toValue(),
+      "forceRenderingQuality": forceRenderingQuality?.toNativeValue(),
       "margins": margins?.toMap(),
       "mediaSize": mediaSize?.toMap(),
-      "colorMode": colorMode?.toValue(),
+      "colorMode": colorMode?.toNativeValue(),
       "duplexMode": duplexMode?.toNativeValue(),
-      "outputType": outputType?.toValue(),
+      "outputType": outputType?.toNativeValue(),
       "resolution": resolution?.toMap(),
       "showsNumberOfCopies": showsNumberOfCopies,
       "showsPaperSelectionForLoadedPapers": showsPaperSelectionForLoadedPapers,

lib/src/pull_to_refresh/pull_to_refresh_controller.dart

@@ -133,7 +133,7 @@ class PullToRefreshController {
   @Deprecated("Use setIndicatorSize instead")
   Future<void> setSize(AndroidPullToRefreshSize size) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent('size', () => size.toValue());
+    args.putIfAbsent('size', () => size.toNativeValue());
     await _channel?.invokeMethod('setSize', args);
   }
 
@@ -142,7 +142,7 @@ class PullToRefreshController {
   ///**NOTE**: Available only on Android.
   Future<void> setIndicatorSize(PullToRefreshSize size) async {
     Map<String, dynamic> args = <String, dynamic>{};
-    args.putIfAbsent('size', () => size.toValue());
+    args.putIfAbsent('size', () => size.toNativeValue());
     await _channel?.invokeMethod('setSize', args);
   }
 
@@ -166,6 +166,13 @@ class PullToRefreshController {
   void initMethodChannel(dynamic id) {
     this._channel = MethodChannel(
         'com.pichillilorenzo/flutter_inappwebview_pull_to_refresh_$id');
-    this._channel?.setMethodCallHandler(_handleMethod);
+    this._channel?.setMethodCallHandler((call) async {
+      try {
+        return await _handleMethod(call);
+      } on Error catch (e) {
+        print(e);
+        print(e.stackTrace);
+      }
+    });
   }
 }

lib/src/pull_to_refresh/pull_to_refresh_settings.dart

@@ -49,7 +49,7 @@ class PullToRefreshSettings {
       "backgroundColor": backgroundColor?.toHex(),
       "distanceToTriggerSync": distanceToTriggerSync,
       "slingshotDistance": slingshotDistance,
-      "size": size?.toValue(),
+      "size": size?.toNativeValue(),
       "attributedTitle": attributedTitle?.toMap() ?? {}
     };
   }
@@ -112,7 +112,7 @@ class PullToRefreshOptions {
       "backgroundColor": backgroundColor?.toHex(),
       "distanceToTriggerSync": distanceToTriggerSync,
       "slingshotDistance": slingshotDistance,
-      "size": size?.toValue(),
+      "size": size?.toNativeValue(),
       "attributedTitle": attributedTitle?.toMap() ?? {}
     };
   }

lib/src/types/action_mode_menu_item.dart

@@ -1,68 +1,27 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+part 'action_mode_menu_item.g.dart';
+
 ///Class used to disable the action mode menu items.
-class ActionModeMenuItem {
+@ExchangeableEnum(
+    bitwiseOrOperator: true
+)
+class ActionModeMenuItem_ {
+  // ignore: unused_field
   final int _value;
-
-  const ActionModeMenuItem._internal(this._value);
-
-  ///Set of all values of [ActionModeMenuItem].
-  static final Set<ActionModeMenuItem> values = [
-    ActionModeMenuItem.MENU_ITEM_NONE,
-    ActionModeMenuItem.MENU_ITEM_SHARE,
-    ActionModeMenuItem.MENU_ITEM_WEB_SEARCH,
-    ActionModeMenuItem.MENU_ITEM_PROCESS_TEXT,
-  ].toSet();
-
-  ///Gets a possible [ActionModeMenuItem] instance from an [int] value.
-  static ActionModeMenuItem? fromValue(int? value) {
-    if (value != null) {
-      try {
-        return ActionModeMenuItem.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        // maybe coming from a Bitwise OR operator
-        return ActionModeMenuItem._internal(value);
-      }
-    }
-    return null;
-  }
-
-  ///Gets [int] value.
-  int toValue() => _value;
-
-  @override
-  String toString() {
-    switch (_value) {
-      case 1:
-        return "MENU_ITEM_SHARE";
-      case 2:
-        return "MENU_ITEM_WEB_SEARCH";
-      case 4:
-        return "MENU_ITEM_PROCESS_TEXT";
-      case 0:
-        return "MENU_ITEM_NONE";
-    }
-    return _value.toString();
-  }
+  const ActionModeMenuItem_._internal(this._value);
 
   ///No menu items should be disabled.
-  static const MENU_ITEM_NONE = const ActionModeMenuItem._internal(0);
+  static const MENU_ITEM_NONE = ActionModeMenuItem_._internal(0);
 
   ///Disable menu item "Share".
-  static const MENU_ITEM_SHARE = const ActionModeMenuItem._internal(1);
+  static const MENU_ITEM_SHARE = ActionModeMenuItem_._internal(1);
 
   ///Disable menu item "Web Search".
-  static const MENU_ITEM_WEB_SEARCH = const ActionModeMenuItem._internal(2);
+  static const MENU_ITEM_WEB_SEARCH = ActionModeMenuItem_._internal(2);
 
   ///Disable all the action mode menu items for text processing.
-  static const MENU_ITEM_PROCESS_TEXT = const ActionModeMenuItem._internal(4);
-
-  bool operator ==(value) => value == _value;
-
-  ActionModeMenuItem operator |(ActionModeMenuItem value) =>
-      ActionModeMenuItem._internal(value.toValue() | _value);
-
-  @override
-  int get hashCode => _value.hashCode;
+  static const MENU_ITEM_PROCESS_TEXT = ActionModeMenuItem_._internal(4);
 }
 
 ///An Android-specific class used to disable the action mode menu items.
@@ -71,70 +30,25 @@ class ActionModeMenuItem {
 ///
 ///Use [ActionModeMenuItem] instead.
 @Deprecated("Use ActionModeMenuItem instead")
-class AndroidActionModeMenuItem {
+@ExchangeableEnum(
+    bitwiseOrOperator: true
+)
+class AndroidActionModeMenuItem_ {
+  // ignore: unused_field
   final int _value;
-
-  const AndroidActionModeMenuItem._internal(this._value);
-
-  ///Set of all values of [AndroidActionModeMenuItem].
-  static final Set<AndroidActionModeMenuItem> values = [
-    AndroidActionModeMenuItem.MENU_ITEM_NONE,
-    AndroidActionModeMenuItem.MENU_ITEM_SHARE,
-    AndroidActionModeMenuItem.MENU_ITEM_WEB_SEARCH,
-    AndroidActionModeMenuItem.MENU_ITEM_PROCESS_TEXT,
-  ].toSet();
-
-  ///Gets a possible [AndroidActionModeMenuItem] instance from an [int] value.
-  static AndroidActionModeMenuItem? fromValue(int? value) {
-    if (value != null) {
-      try {
-        return AndroidActionModeMenuItem.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        // maybe coming from a Bitwise OR operator
-        return AndroidActionModeMenuItem._internal(value);
-      }
-    }
-    return null;
-  }
-
-  ///Gets [int] value.
-  int toValue() => _value;
-
-  @override
-  String toString() {
-    switch (_value) {
-      case 1:
-        return "MENU_ITEM_SHARE";
-      case 2:
-        return "MENU_ITEM_WEB_SEARCH";
-      case 4:
-        return "MENU_ITEM_PROCESS_TEXT";
-      case 0:
-        return "MENU_ITEM_NONE";
-    }
-    return _value.toString();
-  }
+  const AndroidActionModeMenuItem_._internal(this._value);
 
   ///No menu items should be disabled.
-  static const MENU_ITEM_NONE = const AndroidActionModeMenuItem._internal(0);
+  static const MENU_ITEM_NONE = const AndroidActionModeMenuItem_._internal(0);
 
   ///Disable menu item "Share".
-  static const MENU_ITEM_SHARE = const AndroidActionModeMenuItem._internal(1);
+  static const MENU_ITEM_SHARE = const AndroidActionModeMenuItem_._internal(1);
 
   ///Disable menu item "Web Search".
   static const MENU_ITEM_WEB_SEARCH =
-  const AndroidActionModeMenuItem._internal(2);
+  const AndroidActionModeMenuItem_._internal(2);
 
   ///Disable all the action mode menu items for text processing.
   static const MENU_ITEM_PROCESS_TEXT =
-  const AndroidActionModeMenuItem._internal(4);
-
-  bool operator ==(value) => value == _value;
-
-  AndroidActionModeMenuItem operator |(AndroidActionModeMenuItem value) =>
-      AndroidActionModeMenuItem._internal(value.toValue() | _value);
-
-  @override
-  int get hashCode => _value.hashCode;
+  const AndroidActionModeMenuItem_._internal(4);
 }

lib/src/types/action_mode_menu_item.g.dart

@@ -0,0 +1,187 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'action_mode_menu_item.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class used to disable the action mode menu items.
+class ActionModeMenuItem {
+  final int _value;
+  final int _nativeValue;
+  const ActionModeMenuItem._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory ActionModeMenuItem._internalMultiPlatform(
+          int value, Function nativeValue) =>
+      ActionModeMenuItem._internal(value, nativeValue());
+
+  ///No menu items should be disabled.
+  static const MENU_ITEM_NONE = ActionModeMenuItem._internal(0, 0);
+
+  ///Disable menu item "Share".
+  static const MENU_ITEM_SHARE = ActionModeMenuItem._internal(1, 1);
+
+  ///Disable menu item "Web Search".
+  static const MENU_ITEM_WEB_SEARCH = ActionModeMenuItem._internal(2, 2);
+
+  ///Disable all the action mode menu items for text processing.
+  static const MENU_ITEM_PROCESS_TEXT = ActionModeMenuItem._internal(4, 4);
+
+  ///Set of all values of [ActionModeMenuItem].
+  static final Set<ActionModeMenuItem> values = [
+    ActionModeMenuItem.MENU_ITEM_NONE,
+    ActionModeMenuItem.MENU_ITEM_SHARE,
+    ActionModeMenuItem.MENU_ITEM_WEB_SEARCH,
+    ActionModeMenuItem.MENU_ITEM_PROCESS_TEXT,
+  ].toSet();
+
+  ///Gets a possible [ActionModeMenuItem] instance from [int] value.
+  static ActionModeMenuItem? fromValue(int? value) {
+    if (value != null) {
+      try {
+        return ActionModeMenuItem.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return ActionModeMenuItem._internal(value, value);
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [ActionModeMenuItem] instance from a native value.
+  static ActionModeMenuItem? fromNativeValue(int? value) {
+    if (value != null) {
+      try {
+        return ActionModeMenuItem.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return ActionModeMenuItem._internal(value, value);
+      }
+    }
+    return null;
+  }
+
+  ///Gets [int] value.
+  int toValue() => _value;
+
+  ///Gets [int] native value.
+  int toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  ActionModeMenuItem operator |(ActionModeMenuItem value) =>
+      ActionModeMenuItem._internal(
+          value.toValue() | _value, value.toNativeValue() | _nativeValue);
+  @override
+  String toString() {
+    switch (_value) {
+      case 0:
+        return 'MENU_ITEM_NONE';
+      case 1:
+        return 'MENU_ITEM_SHARE';
+      case 2:
+        return 'MENU_ITEM_WEB_SEARCH';
+      case 4:
+        return 'MENU_ITEM_PROCESS_TEXT';
+    }
+    return _value.toString();
+  }
+}
+
+///An Android-specific class used to disable the action mode menu items.
+///
+///**NOTE**: available on Android 24+.
+///
+///Use [ActionModeMenuItem] instead.
+@Deprecated('Use ActionModeMenuItem instead')
+class AndroidActionModeMenuItem {
+  final int _value;
+  final int _nativeValue;
+  const AndroidActionModeMenuItem._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory AndroidActionModeMenuItem._internalMultiPlatform(
+          int value, Function nativeValue) =>
+      AndroidActionModeMenuItem._internal(value, nativeValue());
+
+  ///No menu items should be disabled.
+  static const MENU_ITEM_NONE = AndroidActionModeMenuItem._internal(0, 0);
+
+  ///Disable menu item "Share".
+  static const MENU_ITEM_SHARE = AndroidActionModeMenuItem._internal(1, 1);
+
+  ///Disable menu item "Web Search".
+  static const MENU_ITEM_WEB_SEARCH = AndroidActionModeMenuItem._internal(2, 2);
+
+  ///Disable all the action mode menu items for text processing.
+  static const MENU_ITEM_PROCESS_TEXT =
+      AndroidActionModeMenuItem._internal(4, 4);
+
+  ///Set of all values of [AndroidActionModeMenuItem].
+  static final Set<AndroidActionModeMenuItem> values = [
+    AndroidActionModeMenuItem.MENU_ITEM_NONE,
+    AndroidActionModeMenuItem.MENU_ITEM_SHARE,
+    AndroidActionModeMenuItem.MENU_ITEM_WEB_SEARCH,
+    AndroidActionModeMenuItem.MENU_ITEM_PROCESS_TEXT,
+  ].toSet();
+
+  ///Gets a possible [AndroidActionModeMenuItem] instance from [int] value.
+  static AndroidActionModeMenuItem? fromValue(int? value) {
+    if (value != null) {
+      try {
+        return AndroidActionModeMenuItem.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return AndroidActionModeMenuItem._internal(value, value);
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AndroidActionModeMenuItem] instance from a native value.
+  static AndroidActionModeMenuItem? fromNativeValue(int? value) {
+    if (value != null) {
+      try {
+        return AndroidActionModeMenuItem.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return AndroidActionModeMenuItem._internal(value, value);
+      }
+    }
+    return null;
+  }
+
+  ///Gets [int] value.
+  int toValue() => _value;
+
+  ///Gets [int] native value.
+  int toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  AndroidActionModeMenuItem operator |(AndroidActionModeMenuItem value) =>
+      AndroidActionModeMenuItem._internal(
+          value.toValue() | _value, value.toNativeValue() | _nativeValue);
+  @override
+  String toString() {
+    switch (_value) {
+      case 0:
+        return 'MENU_ITEM_NONE';
+      case 1:
+        return 'MENU_ITEM_SHARE';
+      case 2:
+        return 'MENU_ITEM_WEB_SEARCH';
+      case 4:
+        return 'MENU_ITEM_PROCESS_TEXT';
+    }
+    return _value.toString();
+  }
+}

lib/src/types/ajax_request.dart

@@ -1,10 +1,15 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request_headers.dart';
 import 'ajax_request_ready_state.dart';
 import 'ajax_request_event.dart';
 import 'ajax_request_action.dart';
 
+part 'ajax_request.g.dart';
+
 ///Class that represents a JavaScript [XMLHttpRequest](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) object.
-class AjaxRequest {
+@ExchangeableObject()
+class AjaxRequest_ {
   ///Data passed as a parameter to the `XMLHttpRequest.send()` method.
   dynamic data;
 
@@ -30,10 +35,10 @@ class AjaxRequest {
   bool? withCredentials;
 
   ///The HTTP request headers.
-  AjaxRequestHeaders? headers;
+  AjaxRequestHeaders_? headers;
 
   ///The state of the `XMLHttpRequest` request.
-  AjaxRequestReadyState? readyState;
+  AjaxRequestReadyState_? readyState;
 
   ///The numerical HTTP [status code](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status) of the `XMLHttpRequest`'s response.
   int? status;
@@ -67,12 +72,12 @@ class AjaxRequest {
   Map<String, dynamic>? responseHeaders;
 
   ///Event type of the `XMLHttpRequest` request.
-  AjaxRequestEvent? event;
+  AjaxRequestEvent_? event;
 
   ///Indicates the [AjaxRequestAction] that can be used to control the `XMLHttpRequest` request.
-  AjaxRequestAction? action;
+  AjaxRequestAction_? action;
 
-  AjaxRequest(
+  AjaxRequest_(
       {this.data,
         this.method,
         this.url,
@@ -91,68 +96,6 @@ class AjaxRequest {
         this.statusText,
         this.responseHeaders,
         this.event,
-        this.action = AjaxRequestAction.PROCEED});
+        this.action = AjaxRequestAction_.PROCEED});
 
-  ///Gets a possible [AjaxRequest] instance from a [Map] value.
-  static AjaxRequest? fromMap(Map<String, dynamic>? map) {
-    if (map == null) {
-      return null;
-    }
-
-    return AjaxRequest(
-        data: map["data"],
-        method: map["method"],
-        url: map["url"] != null ? Uri.parse(map["url"]) : null,
-        isAsync: map["isAsync"],
-        user: map["user"],
-        password: map["password"],
-        withCredentials: map["withCredentials"],
-        headers:
-        AjaxRequestHeaders.fromMap(map["headers"]?.cast<String, dynamic>()),
-        readyState: AjaxRequestReadyState.fromValue(map["readyState"]),
-        status: map["status"],
-        responseURL:
-        map["responseURL"] != null ? Uri.parse(map["responseURL"]) : null,
-        responseType: map["responseType"],
-        response: map["response"],
-        responseText: map["responseText"],
-        responseXML: map["responseXML"],
-        statusText: map["statusText"],
-        responseHeaders: map["responseHeaders"]?.cast<String, dynamic>(),
-        event: AjaxRequestEvent.fromMap(map["event"]?.cast<String, dynamic>()));
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toMap() {
-    return {
-      "data": data,
-      "method": method,
-      "url": url?.toString(),
-      "isAsync": isAsync,
-      "user": user,
-      "password": password,
-      "withCredentials": withCredentials,
-      "headers": headers?.toMap(),
-      "readyState": readyState?.toValue(),
-      "status": status,
-      "responseURL": responseURL?.toString(),
-      "responseType": responseType,
-      "response": response,
-      "responseText": responseText,
-      "responseXML": responseXML,
-      "statusText": statusText,
-      "responseHeaders": responseHeaders,
-      "action": action?.toValue()
-    };
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toJson() {
-    return this.toMap();
-  }
-
-  @override
-  String toString() {
-    return toMap().toString();
-  }
 }

lib/src/types/ajax_request.g.dart

@@ -0,0 +1,163 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request.dart';
+
+// **************************************************************************
+// ExchangeableObjectGenerator
+// **************************************************************************
+
+///Class that represents a JavaScript [XMLHttpRequest](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) object.
+class AjaxRequest {
+  ///Data passed as a parameter to the `XMLHttpRequest.send()` method.
+  dynamic data;
+
+  ///The HTTP request method of the `XMLHttpRequest` request.
+  String? method;
+
+  ///The URL of the `XMLHttpRequest` request.
+  Uri? url;
+
+  ///An optional Boolean parameter, defaulting to true, indicating whether or not the request is performed asynchronously.
+  bool? isAsync;
+
+  ///The optional user name to use for authentication purposes; by default, this is the null value.
+  String? user;
+
+  ///The optional password to use for authentication purposes; by default, this is the null value.
+  String? password;
+
+  ///The XMLHttpRequest.withCredentials property is a Boolean that indicates whether or not cross-site Access-Control requests
+  ///should be made using credentials such as cookies, authorization headers or TLS client certificates.
+  ///Setting withCredentials has no effect on same-site requests.
+  ///In addition, this flag is also used to indicate when cookies are to be ignored in the response. The default is false.
+  bool? withCredentials;
+
+  ///The HTTP request headers.
+  AjaxRequestHeaders? headers;
+
+  ///The state of the `XMLHttpRequest` request.
+  AjaxRequestReadyState? readyState;
+
+  ///The numerical HTTP [status code](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status) of the `XMLHttpRequest`'s response.
+  int? status;
+
+  ///The serialized URL of the response or the empty string if the URL is null.
+  ///If the URL is returned, any URL fragment present in the URL will be stripped away.
+  ///The value of responseURL will be the final URL obtained after any redirects.
+  Uri? responseURL;
+
+  ///It is an enumerated string value specifying the type of data contained in the response.
+  ///It also lets the author change the [response type](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseType).
+  ///If an empty string is set as the value of responseType, the default value of text is used.
+  String? responseType;
+
+  ///The response's body content. The content-type depends on the [AjaxRequest.reponseType].
+  dynamic response;
+
+  ///The text received from a server following a request being sent.
+  String? responseText;
+
+  ///The HTML or XML string retrieved by the request or null if the request was unsuccessful, has not yet been sent, or if the data can't be parsed as XML or HTML.
+  String? responseXML;
+
+  ///A String containing the response's status message as returned by the HTTP server.
+  ///Unlike [AjaxRequest.status] which indicates a numerical status code, this property contains the text of the response status, such as "OK" or "Not Found".
+  ///If the request's readyState is in [AjaxRequestReadyState.UNSENT] or [AjaxRequestReadyState.OPENED] state, the value of statusText will be an empty string.
+  ///If the server response doesn't explicitly specify a status text, statusText will assume the default value "OK".
+  String? statusText;
+
+  ///All the response headers or returns null if no response has been received. If a network error happened, an empty string is returned.
+  Map<String, dynamic>? responseHeaders;
+
+  ///Event type of the `XMLHttpRequest` request.
+  AjaxRequestEvent? event;
+
+  ///Indicates the [AjaxRequestAction] that can be used to control the `XMLHttpRequest` request.
+  AjaxRequestAction? action;
+  AjaxRequest(
+      {this.data,
+      this.method,
+      this.url,
+      this.isAsync,
+      this.user,
+      this.password,
+      this.withCredentials,
+      this.headers,
+      this.readyState,
+      this.status,
+      this.responseURL,
+      this.responseType,
+      this.response,
+      this.responseText,
+      this.responseXML,
+      this.statusText,
+      this.responseHeaders,
+      this.event,
+      this.action = AjaxRequestAction.PROCEED});
+
+  ///Gets a possible [AjaxRequest] instance from a [Map] value.
+  static AjaxRequest? fromMap(Map<String, dynamic>? map) {
+    if (map == null) {
+      return null;
+    }
+    final instance = AjaxRequest(
+      data: map['data'],
+      method: map['method'],
+      url: map['url'] != null ? Uri.parse(map['url']) : null,
+      isAsync: map['isAsync'],
+      user: map['user'],
+      password: map['password'],
+      withCredentials: map['withCredentials'],
+      headers:
+          AjaxRequestHeaders.fromMap(map['headers']?.cast<String, dynamic>()),
+      readyState: AjaxRequestReadyState.fromNativeValue(map['readyState']),
+      status: map['status'],
+      responseURL:
+          map['responseURL'] != null ? Uri.parse(map['responseURL']) : null,
+      responseType: map['responseType'],
+      response: map['response'],
+      responseText: map['responseText'],
+      responseXML: map['responseXML'],
+      statusText: map['statusText'],
+      responseHeaders: map['responseHeaders']?.cast<String, dynamic>(),
+      event: AjaxRequestEvent.fromMap(map['event']?.cast<String, dynamic>()),
+    );
+    instance.action = AjaxRequestAction.fromNativeValue(map['action']);
+    return instance;
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toMap() {
+    return {
+      "data": data,
+      "method": method,
+      "url": url?.toString(),
+      "isAsync": isAsync,
+      "user": user,
+      "password": password,
+      "withCredentials": withCredentials,
+      "headers": headers?.toMap(),
+      "readyState": readyState?.toNativeValue(),
+      "status": status,
+      "responseURL": responseURL?.toString(),
+      "responseType": responseType,
+      "response": response,
+      "responseText": responseText,
+      "responseXML": responseXML,
+      "statusText": statusText,
+      "responseHeaders": responseHeaders,
+      "event": event?.toMap(),
+      "action": action?.toNativeValue(),
+    };
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toJson() {
+    return toMap();
+  }
+
+  @override
+  String toString() {
+    return 'AjaxRequest{data: $data, method: $method, url: $url, isAsync: $isAsync, user: $user, password: $password, withCredentials: $withCredentials, headers: $headers, readyState: $readyState, status: $status, responseURL: $responseURL, responseType: $responseType, response: $response, responseText: $responseText, responseXML: $responseXML, statusText: $statusText, responseHeaders: $responseHeaders, event: $event, action: $action}';
+  }
+}

lib/src/types/ajax_request_action.dart

@@ -1,39 +1,19 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request.dart';
 
+part 'ajax_request_action.g.dart';
+
 ///Class used by [AjaxRequest] class.
-class AjaxRequestAction {
+@ExchangeableEnum()
+class AjaxRequestAction_ {
+  // ignore: unused_field
   final int _value;
-
-  const AjaxRequestAction._internal(this._value);
-
-  ///Gets [int] value.
-  int toValue() => _value;
+  const AjaxRequestAction_._internal(this._value);
 
   ///Aborts the current [AjaxRequest].
-  static const ABORT = const AjaxRequestAction._internal(0);
+  static const ABORT = const AjaxRequestAction_._internal(0);
 
   ///Proceeds with the current [AjaxRequest].
-  static const PROCEED = const AjaxRequestAction._internal(1);
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toMap() {
-    return {
-      "action": _value,
-    };
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toJson() {
-    return this.toMap();
-  }
-
-  @override
-  String toString() {
-    return toMap().toString();
-  }
+  static const PROCEED = const AjaxRequestAction_._internal(1);
 }

lib/src/types/ajax_request_action.g.dart

@@ -0,0 +1,79 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request_action.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class used by [AjaxRequest] class.
+class AjaxRequestAction {
+  final int _value;
+  final int _nativeValue;
+  const AjaxRequestAction._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory AjaxRequestAction._internalMultiPlatform(
+          int value, Function nativeValue) =>
+      AjaxRequestAction._internal(value, nativeValue());
+
+  ///Aborts the current [AjaxRequest].
+  static const ABORT = AjaxRequestAction._internal(0, 0);
+
+  ///Proceeds with the current [AjaxRequest].
+  static const PROCEED = AjaxRequestAction._internal(1, 1);
+
+  ///Set of all values of [AjaxRequestAction].
+  static final Set<AjaxRequestAction> values = [
+    AjaxRequestAction.ABORT,
+    AjaxRequestAction.PROCEED,
+  ].toSet();
+
+  ///Gets a possible [AjaxRequestAction] instance from [int] value.
+  static AjaxRequestAction? fromValue(int? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestAction.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AjaxRequestAction] instance from a native value.
+  static AjaxRequestAction? fromNativeValue(int? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestAction.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets [int] value.
+  int toValue() => _value;
+
+  ///Gets [int] native value.
+  int toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    switch (_value) {
+      case 0:
+        return 'ABORT';
+      case 1:
+        return 'PROCEED';
+    }
+    return _value.toString();
+  }
+}

lib/src/types/ajax_request_event.dart

@@ -1,10 +1,15 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request.dart';
 import 'ajax_request_event_type.dart';
 
+part 'ajax_request_event.g.dart';
+
 ///Class used by [AjaxRequest] class. It represents events measuring progress of an [AjaxRequest].
-class AjaxRequestEvent {
+@ExchangeableObject()
+class AjaxRequestEvent_ {
   ///Event type.
-  AjaxRequestEventType? type;
+  AjaxRequestEventType_? type;
 
   ///Is a Boolean flag indicating if the total work to be done, and the amount of work already done, by the underlying process is calculable.
   ///In other words, it tells if the progress is measurable or not.
@@ -19,38 +24,5 @@ class AjaxRequestEvent {
   ///When downloading a resource using HTTP, this only represent the content itself, not headers and other overhead.
   int? total;
 
-  AjaxRequestEvent({this.type, this.lengthComputable, this.loaded, this.total});
-
-  ///Gets a possible [AjaxRequestEvent] instance from a [Map] value.
-  static AjaxRequestEvent? fromMap(Map<String, dynamic>? map) {
-    if (map == null) {
-      return null;
-    }
-
-    return AjaxRequestEvent(
-        type: AjaxRequestEventType.fromValue(map["type"]),
-        lengthComputable: map["lengthComputable"],
-        loaded: map["loaded"],
-        total: map["total"]);
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toMap() {
-    return {
-      "type": type?.toValue(),
-      "lengthComputable": lengthComputable,
-      "loaded": loaded,
-      "total": total,
-    };
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toJson() {
-    return this.toMap();
-  }
-
-  @override
-  String toString() {
-    return toMap().toString();
-  }
+  AjaxRequestEvent_({this.type, this.lengthComputable, this.loaded, this.total});
 }

lib/src/types/ajax_request_event.g.dart

@@ -0,0 +1,61 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request_event.dart';
+
+// **************************************************************************
+// ExchangeableObjectGenerator
+// **************************************************************************
+
+///Class used by [AjaxRequest] class. It represents events measuring progress of an [AjaxRequest].
+class AjaxRequestEvent {
+  ///Event type.
+  AjaxRequestEventType? type;
+
+  ///Is a Boolean flag indicating if the total work to be done, and the amount of work already done, by the underlying process is calculable.
+  ///In other words, it tells if the progress is measurable or not.
+  bool? lengthComputable;
+
+  ///Is an integer representing the amount of work already performed by the underlying process.
+  ///The ratio of work done can be calculated with the property and [AjaxRequestEvent.total].
+  ///When downloading a resource using HTTP, this only represent the part of the content itself, not headers and other overhead.
+  int? loaded;
+
+  ///Is an integer representing the total amount of work that the underlying process is in the progress of performing.
+  ///When downloading a resource using HTTP, this only represent the content itself, not headers and other overhead.
+  int? total;
+  AjaxRequestEvent({this.type, this.lengthComputable, this.loaded, this.total});
+
+  ///Gets a possible [AjaxRequestEvent] instance from a [Map] value.
+  static AjaxRequestEvent? fromMap(Map<String, dynamic>? map) {
+    if (map == null) {
+      return null;
+    }
+    final instance = AjaxRequestEvent(
+      type: AjaxRequestEventType.fromNativeValue(map['type']),
+      lengthComputable: map['lengthComputable'],
+      loaded: map['loaded'],
+      total: map['total'],
+    );
+    return instance;
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toMap() {
+    return {
+      "type": type?.toNativeValue(),
+      "lengthComputable": lengthComputable,
+      "loaded": loaded,
+      "total": total,
+    };
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toJson() {
+    return toMap();
+  }
+
+  @override
+  String toString() {
+    return 'AjaxRequestEvent{type: $type, lengthComputable: $lengthComputable, loaded: $loaded, total: $total}';
+  }
+}

lib/src/types/ajax_request_event_type.dart

@@ -1,64 +1,34 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request_event.dart';
 
+part 'ajax_request_event_type.g.dart';
+
 ///Class used by [AjaxRequestEvent] class.
-class AjaxRequestEventType {
+@ExchangeableEnum()
+class AjaxRequestEventType_ {
   final String _value;
-
-  const AjaxRequestEventType._internal(this._value);
-
-  ///Set of all values of [AjaxRequestEventType].
-  static final Set<AjaxRequestEventType> values = [
-    AjaxRequestEventType.LOADSTART,
-    AjaxRequestEventType.LOAD,
-    AjaxRequestEventType.LOADEND,
-    AjaxRequestEventType.PROGRESS,
-    AjaxRequestEventType.ERROR,
-    AjaxRequestEventType.ABORT,
-    AjaxRequestEventType.TIMEOUT,
-  ].toSet();
-
-  ///Gets a possible [AjaxRequestEventType] instance from a [String] value.
-  static AjaxRequestEventType? fromValue(String? value) {
-    if (value != null) {
-      try {
-        return AjaxRequestEventType.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [String] value.
-  String toValue() => _value;
-
-  String toString() => _value;
+  const AjaxRequestEventType_._internal(this._value);
 
   ///The LOADSTART event is fired when a request has started to load data.
-  static const LOADSTART = const AjaxRequestEventType._internal("loadstart");
+  static const LOADSTART = const AjaxRequestEventType_._internal("loadstart");
 
   ///The LOAD event is fired when an `XMLHttpRequest` transaction completes successfully.
-  static const LOAD = const AjaxRequestEventType._internal("load");
+  static const LOAD = const AjaxRequestEventType_._internal("load");
 
   ///The LOADEND event is fired when a request has completed, whether successfully (after [AjaxRequestEventType.LOAD]) or
   ///unsuccessfully (after [AjaxRequestEventType.ABORT] or [AjaxRequestEventType.ERROR]).
-  static const LOADEND = const AjaxRequestEventType._internal("loadend");
+  static const LOADEND = const AjaxRequestEventType_._internal("loadend");
 
   ///The PROGRESS event is fired periodically when a request receives more data.
-  static const PROGRESS = const AjaxRequestEventType._internal("progress");
+  static const PROGRESS = const AjaxRequestEventType_._internal("progress");
 
   ///The ERROR event is fired when the request encountered an error.
-  static const ERROR = const AjaxRequestEventType._internal("error");
+  static const ERROR = const AjaxRequestEventType_._internal("error");
 
   ///The ABORT event is fired when a request has been aborted.
-  static const ABORT = const AjaxRequestEventType._internal("abort");
+  static const ABORT = const AjaxRequestEventType_._internal("abort");
 
   ///The TIMEOUT event is fired when progression is terminated due to preset time expiring.
-  static const TIMEOUT = const AjaxRequestEventType._internal("timeout");
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  static const TIMEOUT = const AjaxRequestEventType_._internal("timeout");
 }

lib/src/types/ajax_request_event_type.g.dart

@@ -0,0 +1,96 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request_event_type.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class used by [AjaxRequestEvent] class.
+class AjaxRequestEventType {
+  final String _value;
+  final String _nativeValue;
+  const AjaxRequestEventType._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory AjaxRequestEventType._internalMultiPlatform(
+          String value, Function nativeValue) =>
+      AjaxRequestEventType._internal(value, nativeValue());
+
+  ///The LOADSTART event is fired when a request has started to load data.
+  static const LOADSTART =
+      AjaxRequestEventType._internal('loadstart', 'loadstart');
+
+  ///The LOAD event is fired when an `XMLHttpRequest` transaction completes successfully.
+  static const LOAD = AjaxRequestEventType._internal('load', 'load');
+
+  ///The LOADEND event is fired when a request has completed, whether successfully (after [AjaxRequestEventType.LOAD]) or
+  ///unsuccessfully (after [AjaxRequestEventType.ABORT] or [AjaxRequestEventType.ERROR]).
+  static const LOADEND = AjaxRequestEventType._internal('loadend', 'loadend');
+
+  ///The PROGRESS event is fired periodically when a request receives more data.
+  static const PROGRESS =
+      AjaxRequestEventType._internal('progress', 'progress');
+
+  ///The ERROR event is fired when the request encountered an error.
+  static const ERROR = AjaxRequestEventType._internal('error', 'error');
+
+  ///The ABORT event is fired when a request has been aborted.
+  static const ABORT = AjaxRequestEventType._internal('abort', 'abort');
+
+  ///The TIMEOUT event is fired when progression is terminated due to preset time expiring.
+  static const TIMEOUT = AjaxRequestEventType._internal('timeout', 'timeout');
+
+  ///Set of all values of [AjaxRequestEventType].
+  static final Set<AjaxRequestEventType> values = [
+    AjaxRequestEventType.LOADSTART,
+    AjaxRequestEventType.LOAD,
+    AjaxRequestEventType.LOADEND,
+    AjaxRequestEventType.PROGRESS,
+    AjaxRequestEventType.ERROR,
+    AjaxRequestEventType.ABORT,
+    AjaxRequestEventType.TIMEOUT,
+  ].toSet();
+
+  ///Gets a possible [AjaxRequestEventType] instance from [String] value.
+  static AjaxRequestEventType? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestEventType.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AjaxRequestEventType] instance from a native value.
+  static AjaxRequestEventType? fromNativeValue(String? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestEventType.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets [String] value.
+  String toValue() => _value;
+
+  ///Gets [String] native value.
+  String toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    return _value;
+  }
+}

lib/src/types/ajax_request_headers.dart

@@ -1,19 +1,25 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request.dart';
 
+part 'ajax_request_headers.g.dart';
+
 ///Class that represents the HTTP headers of an [AjaxRequest].
-class AjaxRequestHeaders {
+@ExchangeableObject()
+class AjaxRequestHeaders_ {
   Map<String, dynamic> _headers;
   Map<String, dynamic> _newHeaders = {};
 
-  AjaxRequestHeaders(this._headers);
+  @ExchangeableObjectConstructor()
+  AjaxRequestHeaders_(this._headers);
 
   ///Gets a possible [AjaxRequestHeaders] instance from a [Map] value.
-  static AjaxRequestHeaders? fromMap(Map<String, dynamic>? map) {
+  static AjaxRequestHeaders_? fromMap(Map<String, dynamic>? map) {
     if (map == null) {
       return null;
     }
 
-    return AjaxRequestHeaders(map);
+    return AjaxRequestHeaders_(map);
   }
 
   ///Gets the HTTP headers of the [AjaxRequest].
@@ -34,13 +40,8 @@ class AjaxRequestHeaders {
     return _newHeaders;
   }
 
-  ///Converts instance to a map.
-  Map<String, dynamic> toJson() {
-    return toMap();
-  }
-
   @override
   String toString() {
-    return toMap().toString();
+    return 'AjaxRequestHeaders{headers: $_headers, requestHeaders: $_newHeaders}';
   }
 }

lib/src/types/ajax_request_headers.g.dart

@@ -0,0 +1,50 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request_headers.dart';
+
+// **************************************************************************
+// ExchangeableObjectGenerator
+// **************************************************************************
+
+///Class that represents the HTTP headers of an [AjaxRequest].
+class AjaxRequestHeaders {
+  Map<String, dynamic> _headers;
+  Map<String, dynamic> _newHeaders = {};
+  AjaxRequestHeaders(this._headers);
+
+  ///Gets a possible [AjaxRequestHeaders] instance from a [Map] value.
+  static AjaxRequestHeaders? fromMap(Map<String, dynamic>? map) {
+    if (map == null) {
+      return null;
+    }
+    return AjaxRequestHeaders(map);
+  }
+
+  ///Gets the HTTP headers of the [AjaxRequest].
+  Map<String, dynamic> getHeaders() {
+    return this._headers;
+  }
+
+  ///Sets/updates an HTTP header of the [AjaxRequest]. If there is already an existing [header] with the same name, the values are merged into one single request header.
+  ///For security reasons, some headers can only be controlled by the user agent.
+  ///These headers include the [forbidden header names](https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name)
+  ///and [forbidden response header names](https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_response_header_name).
+  void setRequestHeader(String header, String value) {
+    _newHeaders[header] = value;
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toMap() {
+    return _newHeaders;
+  }
+
+  @override
+  String toString() {
+    return 'AjaxRequestHeaders{headers: $_headers, requestHeaders: $_newHeaders}';
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toJson() {
+    return toMap();
+  }
+}

lib/src/types/ajax_request_ready_state.dart

@@ -1,70 +1,28 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import 'ajax_request.dart';
 
+part 'ajax_request_ready_state.g.dart';
+
 ///Class used by [AjaxRequest] class. It represents the state of an [AjaxRequest].
-class AjaxRequestReadyState {
+@ExchangeableEnum()
+class AjaxRequestReadyState_ {
+  // ignore: unused_field
   final int _value;
-
-  const AjaxRequestReadyState._internal(this._value);
-
-  ///Set of all values of [AjaxRequestReadyState].
-  static final Set<AjaxRequestReadyState> values = [
-    AjaxRequestReadyState.UNSENT,
-    AjaxRequestReadyState.OPENED,
-    AjaxRequestReadyState.HEADERS_RECEIVED,
-    AjaxRequestReadyState.LOADING,
-    AjaxRequestReadyState.DONE,
-  ].toSet();
-
-  ///Gets a possible [AjaxRequestReadyState] instance from an [int] value.
-  static AjaxRequestReadyState? fromValue(int? value) {
-    if (value != null) {
-      try {
-        return AjaxRequestReadyState.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [int] value.
-  int toValue() => _value;
-
-  @override
-  String toString() {
-    switch (_value) {
-      case 1:
-        return "OPENED";
-      case 2:
-        return "HEADERS_RECEIVED";
-      case 3:
-        return "LOADING";
-      case 4:
-        return "DONE";
-      case 0:
-      default:
-        return "UNSENT";
-    }
-  }
+  const AjaxRequestReadyState_._internal(this._value);
 
   ///Client has been created. `XMLHttpRequest.open()` not called yet.
-  static const UNSENT = const AjaxRequestReadyState._internal(0);
+  static const UNSENT = const AjaxRequestReadyState_._internal(0);
 
   ///`XMLHttpRequest.open()` has been called.
-  static const OPENED = const AjaxRequestReadyState._internal(1);
+  static const OPENED = const AjaxRequestReadyState_._internal(1);
 
   ///`XMLHttpRequest.send()` has been called, and [AjaxRequest.headers] and [AjaxRequest.status] are available.
-  static const HEADERS_RECEIVED = const AjaxRequestReadyState._internal(2);
+  static const HEADERS_RECEIVED = const AjaxRequestReadyState_._internal(2);
 
   ///Downloading; [AjaxRequest.responseText] holds partial data.
-  static const LOADING = const AjaxRequestReadyState._internal(3);
+  static const LOADING = const AjaxRequestReadyState_._internal(3);
 
   ///The operation is complete.
-  static const DONE = const AjaxRequestReadyState._internal(4);
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  static const DONE = const AjaxRequestReadyState_._internal(4);
 }

lib/src/types/ajax_request_ready_state.g.dart

@@ -0,0 +1,97 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ajax_request_ready_state.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class used by [AjaxRequest] class. It represents the state of an [AjaxRequest].
+class AjaxRequestReadyState {
+  final int _value;
+  final int _nativeValue;
+  const AjaxRequestReadyState._internal(this._value, this._nativeValue);
+// ignore: unused_element
+  factory AjaxRequestReadyState._internalMultiPlatform(
+          int value, Function nativeValue) =>
+      AjaxRequestReadyState._internal(value, nativeValue());
+
+  ///Client has been created. `XMLHttpRequest.open()` not called yet.
+  static const UNSENT = AjaxRequestReadyState._internal(0, 0);
+
+  ///`XMLHttpRequest.open()` has been called.
+  static const OPENED = AjaxRequestReadyState._internal(1, 1);
+
+  ///`XMLHttpRequest.send()` has been called, and [AjaxRequest.headers] and [AjaxRequest.status] are available.
+  static const HEADERS_RECEIVED = AjaxRequestReadyState._internal(2, 2);
+
+  ///Downloading; [AjaxRequest.responseText] holds partial data.
+  static const LOADING = AjaxRequestReadyState._internal(3, 3);
+
+  ///The operation is complete.
+  static const DONE = AjaxRequestReadyState._internal(4, 4);
+
+  ///Set of all values of [AjaxRequestReadyState].
+  static final Set<AjaxRequestReadyState> values = [
+    AjaxRequestReadyState.UNSENT,
+    AjaxRequestReadyState.OPENED,
+    AjaxRequestReadyState.HEADERS_RECEIVED,
+    AjaxRequestReadyState.LOADING,
+    AjaxRequestReadyState.DONE,
+  ].toSet();
+
+  ///Gets a possible [AjaxRequestReadyState] instance from [int] value.
+  static AjaxRequestReadyState? fromValue(int? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestReadyState.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AjaxRequestReadyState] instance from a native value.
+  static AjaxRequestReadyState? fromNativeValue(int? value) {
+    if (value != null) {
+      try {
+        return AjaxRequestReadyState.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets [int] value.
+  int toValue() => _value;
+
+  ///Gets [int] native value.
+  int toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    switch (_value) {
+      case 0:
+        return 'UNSENT';
+      case 1:
+        return 'OPENED';
+      case 2:
+        return 'HEADERS_RECEIVED';
+      case 3:
+        return 'LOADING';
+      case 4:
+        return 'DONE';
+    }
+    return _value.toString();
+  }
+}

lib/src/types/attributed_string.dart

@@ -1,13 +1,18 @@
 import 'dart:ui';
 
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
 import '../pull_to_refresh/main.dart';
 import 'underline_style.dart';
 import 'attributed_string_text_effect_style.dart';
 import '../util.dart';
 
+part 'attributed_string.g.dart';
+
 ///Class that represents a string with associated attributes
 ///used by the [PullToRefreshController] and [PullToRefreshSettings] classes.
-class AttributedString {
+@ExchangeableObject()
+class AttributedString_ {
   ///The characters for the new object.
   String string;
 
@@ -69,7 +74,7 @@ class AttributedString {
   ///
   ///This value indicates whether the text has a line through it and corresponds to one of the constants described in [UnderlineStyle].
   ///The default value for this attribute is [UnderlineStyle.STYLE_NONE].
-  UnderlineStyle? strikethroughStyle;
+  UnderlineStyle_? strikethroughStyle;
 
   ///The color of the stroke.
   ///
@@ -92,7 +97,7 @@ class AttributedString {
   ///
   ///The value of this attribute is a [AttributedStringTextEffectStyle] object.
   ///The default value of this property is `null`, indicating no text effect.
-  AttributedStringTextEffectStyle? textEffect;
+  AttributedStringTextEffectStyle_? textEffect;
 
   ///The color of the underline.
   ///
@@ -104,9 +109,9 @@ class AttributedString {
   ///
   ///This value indicates whether the text is underlined and corresponds to one of the constants described in [UnderlineStyle].
   ///The default value for this attribute is [UnderlineStyle.STYLE_NONE].
-  UnderlineStyle? underlineStyle;
+  UnderlineStyle_? underlineStyle;
 
-  AttributedString({
+  AttributedString_({
     required this.string,
     this.backgroundColor,
     this.baselineOffset,
@@ -123,42 +128,14 @@ class AttributedString {
     this.underlineColor,
     this.underlineStyle,
   });
-
-  Map<String, dynamic> toMap() {
-    return {
-      "string": this.string,
-      "backgroundColor": this.backgroundColor?.toHex(),
-      "baselineOffset": this.baselineOffset,
-      "expansion": this.expansion,
-      "foregroundColor": this.foregroundColor?.toHex(),
-      "kern": this.kern,
-      "ligature": this.ligature,
-      "obliqueness": this.obliqueness,
-      "strikethroughColor": this.strikethroughColor?.toHex(),
-      "strikethroughStyle": this.strikethroughStyle?.toValue(),
-      "strokeColor": this.strokeColor?.toHex(),
-      "strokeWidth": this.strokeWidth,
-      "textEffect": this.textEffect?.toValue(),
-      "underlineColor": this.underlineColor?.toHex(),
-      "underlineStyle": this.underlineStyle?.toValue(),
-    };
-  }
-
-  Map<String, dynamic> toJson() {
-    return this.toMap();
-  }
-
-  @override
-  String toString() {
-    return toMap().toString();
-  }
 }
 
 ///An iOS-specific class that represents a string with associated attributes
 ///used by the [PullToRefreshController] and [PullToRefreshOptions] classes.
 ///Use [AttributedString] instead.
 @Deprecated("Use AttributedString instead")
-class IOSNSAttributedString {
+@ExchangeableObject()
+class IOSNSAttributedString_ {
   ///The characters for the new object.
   String string;
 
@@ -220,7 +197,7 @@ class IOSNSAttributedString {
   ///
   ///This value indicates whether the text has a line through it and corresponds to one of the constants described in [IOSNSUnderlineStyle].
   ///The default value for this attribute is [IOSNSUnderlineStyle.STYLE_NONE].
-  IOSNSUnderlineStyle? strikethroughStyle;
+  IOSNSUnderlineStyle_? strikethroughStyle;
 
   ///The color of the stroke.
   ///
@@ -243,7 +220,7 @@ class IOSNSAttributedString {
   ///
   ///The value of this attribute is a [IOSNSAttributedStringTextEffectStyle] object.
   ///The default value of this property is `null`, indicating no text effect.
-  IOSNSAttributedStringTextEffectStyle? textEffect;
+  IOSNSAttributedStringTextEffectStyle_? textEffect;
 
   ///The color of the underline.
   ///
@@ -255,9 +232,9 @@ class IOSNSAttributedString {
   ///
   ///This value indicates whether the text is underlined and corresponds to one of the constants described in [IOSNSUnderlineStyle].
   ///The default value for this attribute is [IOSNSUnderlineStyle.STYLE_NONE].
-  IOSNSUnderlineStyle? underlineStyle;
+  IOSNSUnderlineStyle_? underlineStyle;
 
-  IOSNSAttributedString({
+  IOSNSAttributedString_({
     required this.string,
     this.backgroundColor,
     this.baselineOffset,
@@ -274,35 +251,4 @@ class IOSNSAttributedString {
     this.underlineColor,
     this.underlineStyle,
   });
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toMap() {
-    return {
-      "string": this.string,
-      "backgroundColor": this.backgroundColor?.toHex(),
-      "baselineOffset": this.baselineOffset,
-      "expansion": this.expansion,
-      "foregroundColor": this.foregroundColor?.toHex(),
-      "kern": this.kern,
-      "ligature": this.ligature,
-      "obliqueness": this.obliqueness,
-      "strikethroughColor": this.strikethroughColor?.toHex(),
-      "strikethroughStyle": this.strikethroughStyle?.toValue(),
-      "strokeColor": this.strokeColor?.toHex(),
-      "strokeWidth": this.strokeWidth,
-      "textEffect": this.textEffect?.toValue(),
-      "underlineColor": this.underlineColor?.toHex(),
-      "underlineStyle": this.underlineStyle?.toValue(),
-    };
-  }
-
-  ///Converts instance to a map.
-  Map<String, dynamic> toJson() {
-    return this.toMap();
-  }
-
-  @override
-  String toString() {
-    return toMap().toString();
-  }
 }

lib/src/types/attributed_string.g.dart

@@ -0,0 +1,382 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'attributed_string.dart';
+
+// **************************************************************************
+// ExchangeableObjectGenerator
+// **************************************************************************
+
+///Class that represents a string with associated attributes
+///used by the [PullToRefreshController] and [PullToRefreshSettings] classes.
+class AttributedString {
+  ///The characters for the new object.
+  String string;
+
+  ///The color of the background behind the text.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///Use this attribute to specify the color of the background area behind the text.
+  ///If you do not specify this attribute, no background color is drawn.
+  Color? backgroundColor;
+
+  ///The vertical offset for the position of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating the character’s offset from the baseline, in points.
+  ///The default value is `0`.
+  double? baselineOffset;
+
+  ///The expansion factor of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating the log of the expansion factor to be applied to glyphs.
+  ///The default value is `0`, indicating no expansion.
+  double? expansion;
+
+  ///The color of the text.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///Use this attribute to specify the color of the text during rendering.
+  ///If you do not specify this attribute, the text is rendered in black.
+  Color? foregroundColor;
+
+  ///The kerning of the text.
+  ///
+  ///The value of this attribute is a number containing a floating-point value.
+  ///This value specifies the number of points by which to adjust kern-pair characters.
+  ///Kerning prevents unwanted space from occurring between specific characters and depends on the font.
+  ///The value `0` means kerning is disabled. The default value for this attribute is `0`.
+  double? kern;
+
+  ///The ligature of the text.
+  ///
+  ///The value of this attribute is a number containing an integer.
+  ///Ligatures cause specific character combinations to be rendered using a single custom glyph that corresponds to those characters.
+  ///The value `0` indicates no ligatures. The value `1` indicates the use of the default ligatures.
+  ///The value `2` indicates the use of all ligatures.
+  ///The default value for this attribute is `1`. (Value `2` is unsupported on iOS.)
+  int? ligature;
+
+  ///The obliqueness of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating skew to be applied to glyphs.
+  ///The default value is `0`, indicating no skew.
+  double? obliqueness;
+
+  ///The color of the strikethrough.
+  ///
+  ///The value of this attribute is a [Color] object. The default value is `null`, indicating same as foreground color.
+  Color? strikethroughColor;
+
+  ///The strikethrough style of the text.
+  ///
+  ///This value indicates whether the text has a line through it and corresponds to one of the constants described in [UnderlineStyle].
+  ///The default value for this attribute is [UnderlineStyle.STYLE_NONE].
+  UnderlineStyle? strikethroughStyle;
+
+  ///The color of the stroke.
+  ///
+  ///The value of this parameter is a [Color] object.
+  ///If it is not defined (which is the case by default), it is assumed to be the same as the value of foregroundColor;
+  ///otherwise, it describes the outline color.
+  Color? strokeColor;
+
+  ///The width of the stroke.
+  ///
+  ///The value of this attribute is a number containing a floating-point value.
+  ///This value represents the amount to change the stroke width and is specified as a percentage of the font point size.
+  ///Specify `0` (the default) for no additional changes.
+  ///Specify positive values to change the stroke width alone.
+  ///Specify negative values to stroke and fill the text.
+  ///For example, a typical value for outlined text would be `3.0`.
+  double? strokeWidth;
+
+  ///The text effect.
+  ///
+  ///The value of this attribute is a [AttributedStringTextEffectStyle] object.
+  ///The default value of this property is `null`, indicating no text effect.
+  AttributedStringTextEffectStyle? textEffect;
+
+  ///The color of the underline.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///The default value is `null`, indicating same as foreground color.
+  Color? underlineColor;
+
+  ///The underline style of the text.
+  ///
+  ///This value indicates whether the text is underlined and corresponds to one of the constants described in [UnderlineStyle].
+  ///The default value for this attribute is [UnderlineStyle.STYLE_NONE].
+  UnderlineStyle? underlineStyle;
+  AttributedString(
+      {required this.string,
+      this.backgroundColor,
+      this.baselineOffset,
+      this.expansion,
+      this.foregroundColor,
+      this.kern,
+      this.ligature,
+      this.obliqueness,
+      this.strikethroughColor,
+      this.strikethroughStyle,
+      this.strokeColor,
+      this.strokeWidth,
+      this.textEffect,
+      this.underlineColor,
+      this.underlineStyle});
+
+  ///Gets a possible [AttributedString] instance from a [Map] value.
+  static AttributedString? fromMap(Map<String, dynamic>? map) {
+    if (map == null) {
+      return null;
+    }
+    final instance = AttributedString(
+      string: map['string'],
+      backgroundColor: map['backgroundColor'] != null
+          ? UtilColor.fromStringRepresentation(map['backgroundColor'])
+          : null,
+      baselineOffset: map['baselineOffset'],
+      expansion: map['expansion'],
+      foregroundColor: map['foregroundColor'] != null
+          ? UtilColor.fromStringRepresentation(map['foregroundColor'])
+          : null,
+      kern: map['kern'],
+      ligature: map['ligature'],
+      obliqueness: map['obliqueness'],
+      strikethroughColor: map['strikethroughColor'] != null
+          ? UtilColor.fromStringRepresentation(map['strikethroughColor'])
+          : null,
+      strikethroughStyle:
+          UnderlineStyle.fromNativeValue(map['strikethroughStyle']),
+      strokeColor: map['strokeColor'] != null
+          ? UtilColor.fromStringRepresentation(map['strokeColor'])
+          : null,
+      strokeWidth: map['strokeWidth'],
+      textEffect:
+          AttributedStringTextEffectStyle.fromNativeValue(map['textEffect']),
+      underlineColor: map['underlineColor'] != null
+          ? UtilColor.fromStringRepresentation(map['underlineColor'])
+          : null,
+      underlineStyle: UnderlineStyle.fromNativeValue(map['underlineStyle']),
+    );
+    return instance;
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toMap() {
+    return {
+      "string": string,
+      "backgroundColor": backgroundColor?.toHex(),
+      "baselineOffset": baselineOffset,
+      "expansion": expansion,
+      "foregroundColor": foregroundColor?.toHex(),
+      "kern": kern,
+      "ligature": ligature,
+      "obliqueness": obliqueness,
+      "strikethroughColor": strikethroughColor?.toHex(),
+      "strikethroughStyle": strikethroughStyle?.toNativeValue(),
+      "strokeColor": strokeColor?.toHex(),
+      "strokeWidth": strokeWidth,
+      "textEffect": textEffect?.toNativeValue(),
+      "underlineColor": underlineColor?.toHex(),
+      "underlineStyle": underlineStyle?.toNativeValue(),
+    };
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toJson() {
+    return toMap();
+  }
+
+  @override
+  String toString() {
+    return 'AttributedString{string: $string, backgroundColor: $backgroundColor, baselineOffset: $baselineOffset, expansion: $expansion, foregroundColor: $foregroundColor, kern: $kern, ligature: $ligature, obliqueness: $obliqueness, strikethroughColor: $strikethroughColor, strikethroughStyle: $strikethroughStyle, strokeColor: $strokeColor, strokeWidth: $strokeWidth, textEffect: $textEffect, underlineColor: $underlineColor, underlineStyle: $underlineStyle}';
+  }
+}
+
+///An iOS-specific class that represents a string with associated attributes
+///used by the [PullToRefreshController] and [PullToRefreshOptions] classes.
+///Use [AttributedString] instead.
+@Deprecated('Use AttributedString instead')
+class IOSNSAttributedString {
+  ///The characters for the new object.
+  String string;
+
+  ///The color of the background behind the text.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///Use this attribute to specify the color of the background area behind the text.
+  ///If you do not specify this attribute, no background color is drawn.
+  Color? backgroundColor;
+
+  ///The vertical offset for the position of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating the character’s offset from the baseline, in points.
+  ///The default value is `0`.
+  double? baselineOffset;
+
+  ///The expansion factor of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating the log of the expansion factor to be applied to glyphs.
+  ///The default value is `0`, indicating no expansion.
+  double? expansion;
+
+  ///The color of the text.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///Use this attribute to specify the color of the text during rendering.
+  ///If you do not specify this attribute, the text is rendered in black.
+  Color? foregroundColor;
+
+  ///The kerning of the text.
+  ///
+  ///The value of this attribute is a number containing a floating-point value.
+  ///This value specifies the number of points by which to adjust kern-pair characters.
+  ///Kerning prevents unwanted space from occurring between specific characters and depends on the font.
+  ///The value `0` means kerning is disabled. The default value for this attribute is `0`.
+  double? kern;
+
+  ///The ligature of the text.
+  ///
+  ///The value of this attribute is a number containing an integer.
+  ///Ligatures cause specific character combinations to be rendered using a single custom glyph that corresponds to those characters.
+  ///The value `0` indicates no ligatures. The value `1` indicates the use of the default ligatures.
+  ///The value `2` indicates the use of all ligatures.
+  ///The default value for this attribute is `1`. (Value `2` is unsupported on iOS.)
+  int? ligature;
+
+  ///The obliqueness of the text.
+  ///
+  ///The value of this attribute is a number containing a floating point value indicating skew to be applied to glyphs.
+  ///The default value is `0`, indicating no skew.
+  double? obliqueness;
+
+  ///The color of the strikethrough.
+  ///
+  ///The value of this attribute is a [Color] object. The default value is `null`, indicating same as foreground color.
+  Color? strikethroughColor;
+
+  ///The strikethrough style of the text.
+  ///
+  ///This value indicates whether the text has a line through it and corresponds to one of the constants described in [IOSNSUnderlineStyle].
+  ///The default value for this attribute is [IOSNSUnderlineStyle.STYLE_NONE].
+  IOSNSUnderlineStyle? strikethroughStyle;
+
+  ///The color of the stroke.
+  ///
+  ///The value of this parameter is a [Color] object.
+  ///If it is not defined (which is the case by default), it is assumed to be the same as the value of foregroundColor;
+  ///otherwise, it describes the outline color.
+  Color? strokeColor;
+
+  ///The width of the stroke.
+  ///
+  ///The value of this attribute is a number containing a floating-point value.
+  ///This value represents the amount to change the stroke width and is specified as a percentage of the font point size.
+  ///Specify `0` (the default) for no additional changes.
+  ///Specify positive values to change the stroke width alone.
+  ///Specify negative values to stroke and fill the text.
+  ///For example, a typical value for outlined text would be `3.0`.
+  double? strokeWidth;
+
+  ///The text effect.
+  ///
+  ///The value of this attribute is a [IOSNSAttributedStringTextEffectStyle] object.
+  ///The default value of this property is `null`, indicating no text effect.
+  IOSNSAttributedStringTextEffectStyle? textEffect;
+
+  ///The color of the underline.
+  ///
+  ///The value of this attribute is a [Color] object.
+  ///The default value is `null`, indicating same as foreground color.
+  Color? underlineColor;
+
+  ///The underline style of the text.
+  ///
+  ///This value indicates whether the text is underlined and corresponds to one of the constants described in [IOSNSUnderlineStyle].
+  ///The default value for this attribute is [IOSNSUnderlineStyle.STYLE_NONE].
+  IOSNSUnderlineStyle? underlineStyle;
+  IOSNSAttributedString(
+      {required this.string,
+      this.backgroundColor,
+      this.baselineOffset,
+      this.expansion,
+      this.foregroundColor,
+      this.kern,
+      this.ligature,
+      this.obliqueness,
+      this.strikethroughColor,
+      this.strikethroughStyle,
+      this.strokeColor,
+      this.strokeWidth,
+      this.textEffect,
+      this.underlineColor,
+      this.underlineStyle});
+
+  ///Gets a possible [IOSNSAttributedString] instance from a [Map] value.
+  static IOSNSAttributedString? fromMap(Map<String, dynamic>? map) {
+    if (map == null) {
+      return null;
+    }
+    final instance = IOSNSAttributedString(
+      string: map['string'],
+      backgroundColor: map['backgroundColor'] != null
+          ? UtilColor.fromStringRepresentation(map['backgroundColor'])
+          : null,
+      baselineOffset: map['baselineOffset'],
+      expansion: map['expansion'],
+      foregroundColor: map['foregroundColor'] != null
+          ? UtilColor.fromStringRepresentation(map['foregroundColor'])
+          : null,
+      kern: map['kern'],
+      ligature: map['ligature'],
+      obliqueness: map['obliqueness'],
+      strikethroughColor: map['strikethroughColor'] != null
+          ? UtilColor.fromStringRepresentation(map['strikethroughColor'])
+          : null,
+      strikethroughStyle:
+          IOSNSUnderlineStyle.fromNativeValue(map['strikethroughStyle']),
+      strokeColor: map['strokeColor'] != null
+          ? UtilColor.fromStringRepresentation(map['strokeColor'])
+          : null,
+      strokeWidth: map['strokeWidth'],
+      textEffect: IOSNSAttributedStringTextEffectStyle.fromNativeValue(
+          map['textEffect']),
+      underlineColor: map['underlineColor'] != null
+          ? UtilColor.fromStringRepresentation(map['underlineColor'])
+          : null,
+      underlineStyle:
+          IOSNSUnderlineStyle.fromNativeValue(map['underlineStyle']),
+    );
+    return instance;
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toMap() {
+    return {
+      "string": string,
+      "backgroundColor": backgroundColor?.toHex(),
+      "baselineOffset": baselineOffset,
+      "expansion": expansion,
+      "foregroundColor": foregroundColor?.toHex(),
+      "kern": kern,
+      "ligature": ligature,
+      "obliqueness": obliqueness,
+      "strikethroughColor": strikethroughColor?.toHex(),
+      "strikethroughStyle": strikethroughStyle?.toNativeValue(),
+      "strokeColor": strokeColor?.toHex(),
+      "strokeWidth": strokeWidth,
+      "textEffect": textEffect?.toNativeValue(),
+      "underlineColor": underlineColor?.toHex(),
+      "underlineStyle": underlineStyle?.toNativeValue(),
+    };
+  }
+
+  ///Converts instance to a map.
+  Map<String, dynamic> toJson() {
+    return toMap();
+  }
+
+  @override
+  String toString() {
+    return 'IOSNSAttributedString{string: $string, backgroundColor: $backgroundColor, baselineOffset: $baselineOffset, expansion: $expansion, foregroundColor: $foregroundColor, kern: $kern, ligature: $ligature, obliqueness: $obliqueness, strikethroughColor: $strikethroughColor, strikethroughStyle: $strikethroughStyle, strokeColor: $strokeColor, strokeWidth: $strokeWidth, textEffect: $textEffect, underlineColor: $underlineColor, underlineStyle: $underlineStyle}';
+  }
+}

lib/src/types/attributed_string_text_effect_style.dart

@@ -1,81 +1,29 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+part 'attributed_string_text_effect_style.g.dart';
+
 ///Class that represents the supported proxy types.
-class AttributedStringTextEffectStyle {
+@ExchangeableEnum()
+class AttributedStringTextEffectStyle_ {
+  // ignore: unused_field
   final String _value;
-
-  const AttributedStringTextEffectStyle._internal(this._value);
-
-  ///Set of all values of [AttributedStringTextEffectStyle].
-  static final Set<AttributedStringTextEffectStyle> values = [
-    AttributedStringTextEffectStyle.LETTERPRESS_STYLE,
-  ].toSet();
-
-  ///Gets a possible [AttributedStringTextEffectStyle] instance from a [String] value.
-  static AttributedStringTextEffectStyle? fromValue(String? value) {
-    if (value != null) {
-      try {
-        return AttributedStringTextEffectStyle.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [String] value.
-  String toValue() => _value;
-
-  @override
-  String toString() => _value;
+  const AttributedStringTextEffectStyle_._internal(this._value);
 
   ///A graphical text effect that gives glyphs the appearance of letterpress printing, which involves pressing the type into the paper.
   static const LETTERPRESS_STYLE =
-  const AttributedStringTextEffectStyle._internal("letterpressStyle");
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  const AttributedStringTextEffectStyle_._internal("letterpressStyle");
 }
 
 ///An iOS-specific Class that represents the supported proxy types.
 ///Use [AttributedStringTextEffectStyle] instead.
 @Deprecated("Use AttributedStringTextEffectStyle instead")
-class IOSNSAttributedStringTextEffectStyle {
+@ExchangeableEnum()
+class IOSNSAttributedStringTextEffectStyle_ {
+  // ignore: unused_field
   final String _value;
-
-  const IOSNSAttributedStringTextEffectStyle._internal(this._value);
-
-  ///Set of all values of [IOSNSAttributedStringTextEffectStyle].
-  static final Set<IOSNSAttributedStringTextEffectStyle> values = [
-    IOSNSAttributedStringTextEffectStyle.LETTERPRESS_STYLE,
-  ].toSet();
-
-  ///Gets a possible [IOSNSAttributedStringTextEffectStyle] instance from a [String] value.
-  static IOSNSAttributedStringTextEffectStyle? fromValue(String? value) {
-    if (value != null) {
-      try {
-        return IOSNSAttributedStringTextEffectStyle.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [String] value.
-  String toValue() => _value;
-
-  @override
-  String toString() => _value;
+  const IOSNSAttributedStringTextEffectStyle_._internal(this._value);
 
   ///A graphical text effect that gives glyphs the appearance of letterpress printing, which involves pressing the type into the paper.
   static const LETTERPRESS_STYLE =
-  const IOSNSAttributedStringTextEffectStyle._internal("letterpressStyle");
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  const IOSNSAttributedStringTextEffectStyle_._internal("letterpressStyle");
 }

lib/src/types/attributed_string_text_effect_style.g.dart

@@ -0,0 +1,138 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'attributed_string_text_effect_style.dart';
+
+// **************************************************************************
+// ExchangeableEnumGenerator
+// **************************************************************************
+
+///Class that represents the supported proxy types.
+class AttributedStringTextEffectStyle {
+  final String _value;
+  final String _nativeValue;
+  const AttributedStringTextEffectStyle._internal(
+      this._value, this._nativeValue);
+// ignore: unused_element
+  factory AttributedStringTextEffectStyle._internalMultiPlatform(
+          String value, Function nativeValue) =>
+      AttributedStringTextEffectStyle._internal(value, nativeValue());
+
+  ///A graphical text effect that gives glyphs the appearance of letterpress printing, which involves pressing the type into the paper.
+  static const LETTERPRESS_STYLE = AttributedStringTextEffectStyle._internal(
+      'letterpressStyle', 'letterpressStyle');
+
+  ///Set of all values of [AttributedStringTextEffectStyle].
+  static final Set<AttributedStringTextEffectStyle> values = [
+    AttributedStringTextEffectStyle.LETTERPRESS_STYLE,
+  ].toSet();
+
+  ///Gets a possible [AttributedStringTextEffectStyle] instance from [String] value.
+  static AttributedStringTextEffectStyle? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return AttributedStringTextEffectStyle.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [AttributedStringTextEffectStyle] instance from a native value.
+  static AttributedStringTextEffectStyle? fromNativeValue(String? value) {
+    if (value != null) {
+      try {
+        return AttributedStringTextEffectStyle.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets [String] value.
+  String toValue() => _value;
+
+  ///Gets [String] native value.
+  String toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    return _value;
+  }
+}
+
+///An iOS-specific Class that represents the supported proxy types.
+///Use [AttributedStringTextEffectStyle] instead.
+@Deprecated('Use AttributedStringTextEffectStyle instead')
+class IOSNSAttributedStringTextEffectStyle {
+  final String _value;
+  final String _nativeValue;
+  const IOSNSAttributedStringTextEffectStyle._internal(
+      this._value, this._nativeValue);
+// ignore: unused_element
+  factory IOSNSAttributedStringTextEffectStyle._internalMultiPlatform(
+          String value, Function nativeValue) =>
+      IOSNSAttributedStringTextEffectStyle._internal(value, nativeValue());
+
+  ///A graphical text effect that gives glyphs the appearance of letterpress printing, which involves pressing the type into the paper.
+  static const LETTERPRESS_STYLE =
+      IOSNSAttributedStringTextEffectStyle._internal(
+          'letterpressStyle', 'letterpressStyle');
+
+  ///Set of all values of [IOSNSAttributedStringTextEffectStyle].
+  static final Set<IOSNSAttributedStringTextEffectStyle> values = [
+    IOSNSAttributedStringTextEffectStyle.LETTERPRESS_STYLE,
+  ].toSet();
+
+  ///Gets a possible [IOSNSAttributedStringTextEffectStyle] instance from [String] value.
+  static IOSNSAttributedStringTextEffectStyle? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return IOSNSAttributedStringTextEffectStyle.values
+            .firstWhere((element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets a possible [IOSNSAttributedStringTextEffectStyle] instance from a native value.
+  static IOSNSAttributedStringTextEffectStyle? fromNativeValue(String? value) {
+    if (value != null) {
+      try {
+        return IOSNSAttributedStringTextEffectStyle.values
+            .firstWhere((element) => element.toNativeValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  ///Gets [String] value.
+  String toValue() => _value;
+
+  ///Gets [String] native value.
+  String toNativeValue() => _nativeValue;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  @override
+  bool operator ==(value) => value == _value;
+
+  @override
+  String toString() {
+    return _value;
+  }
+}

lib/src/types/cache_mode.dart

@@ -1,129 +1,47 @@
+import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+
+part 'cache_mode.g.dart';
+
 ///Class used to override the way the cache is used.
-class CacheMode {
+@ExchangeableEnum()
+class CacheMode_ {
+  // ignore: unused_field
   final int _value;
-
-  const CacheMode._internal(this._value);
-
-  ///Set of all values of [CacheMode].
-  static final Set<CacheMode> values = [
-    CacheMode.LOAD_DEFAULT,
-    CacheMode.LOAD_CACHE_ELSE_NETWORK,
-    CacheMode.LOAD_NO_CACHE,
-    CacheMode.LOAD_CACHE_ONLY,
-  ].toSet();
-
-  ///Gets a possible [CacheMode] instance from an [int] value.
-  static CacheMode? fromValue(int? value) {
-    if (value != null) {
-      try {
-        return CacheMode.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [int] value.
-  int toValue() => _value;
-
-  @override
-  String toString() {
-    switch (_value) {
-      case 1:
-        return "LOAD_CACHE_ELSE_NETWORK";
-      case 2:
-        return "LOAD_NO_CACHE";
-      case 3:
-        return "LOAD_CACHE_ONLY";
-      case -1:
-      default:
-        return "LOAD_DEFAULT";
-    }
-  }
+  const CacheMode_._internal(this._value);
 
   ///Default cache usage mode. If the navigation type doesn't impose any specific behavior,
   ///use cached resources when they are available and not expired, otherwise load resources from the network.
-  static const LOAD_DEFAULT = const CacheMode._internal(-1);
+  static const LOAD_DEFAULT = const CacheMode_._internal(-1);
 
   ///Use cached resources when they are available, even if they have expired. Otherwise load resources from the network.
-  static const LOAD_CACHE_ELSE_NETWORK = const CacheMode._internal(1);
+  static const LOAD_CACHE_ELSE_NETWORK = const CacheMode_._internal(1);
 
   ///Don't use the cache, load from the network.
-  static const LOAD_NO_CACHE = const CacheMode._internal(2);
+  static const LOAD_NO_CACHE = const CacheMode_._internal(2);
 
   ///Don't use the network, load from the cache.
-  static const LOAD_CACHE_ONLY = const CacheMode._internal(3);
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  static const LOAD_CACHE_ONLY = const CacheMode_._internal(3);
 }
 
 ///An Android-specific class used to override the way the cache is used.
 ///Use [CacheMode] instead.
 @Deprecated("Use CacheMode instead")
-class AndroidCacheMode {
+@ExchangeableEnum()
+class AndroidCacheMode_ {
+  // ignore: unused_field
   final int _value;
-
-  const AndroidCacheMode._internal(this._value);
-
-  ///Set of all values of [AndroidCacheMode].
-  static final Set<AndroidCacheMode> values = [
-    AndroidCacheMode.LOAD_DEFAULT,
-    AndroidCacheMode.LOAD_CACHE_ELSE_NETWORK,
-    AndroidCacheMode.LOAD_NO_CACHE,
-    AndroidCacheMode.LOAD_CACHE_ONLY,
-  ].toSet();
-
-  ///Gets a possible [AndroidCacheMode] instance from an [int] value.
-  static AndroidCacheMode? fromValue(int? value) {
-    if (value != null) {
-      try {
-        return AndroidCacheMode.values
-            .firstWhere((element) => element.toValue() == value);
-      } catch (e) {
-        return null;
-      }
-    }
-    return null;
-  }
-
-  ///Gets [int] value.
-  int toValue() => _value;
-
-  @override
-  String toString() {
-    switch (_value) {
-      case 1:
-        return "LOAD_CACHE_ELSE_NETWORK";
-      case 2:
-        return "LOAD_NO_CACHE";
-      case 3:
-        return "LOAD_CACHE_ONLY";
-      case -1:
-      default:
-        return "LOAD_DEFAULT";
-    }
-  }
+  const AndroidCacheMode_._internal(this._value);
 
   ///Default cache usage mode. If the navigation type doesn't impose any specific behavior,
   ///use cached resources when they are available and not expired, otherwise load resources from the network.
-  static const LOAD_DEFAULT = const AndroidCacheMode._internal(-1);
+  static const LOAD_DEFAULT = const AndroidCacheMode_._internal(-1);
 
   ///Use cached resources when they are available, even if they have expired. Otherwise load resources from the network.
-  static const LOAD_CACHE_ELSE_NETWORK = const AndroidCacheMode._internal(1);
+  static const LOAD_CACHE_ELSE_NETWORK = const AndroidCacheMode_._internal(1);
 
   ///Don't use the cache, load from the network.
-  static const LOAD_NO_CACHE = const AndroidCacheMode._internal(2);
+  static const LOAD_NO_CACHE = const AndroidCacheMode_._internal(2);
 
   ///Don't use the network, load from the cache.
-  static const LOAD_CACHE_ONLY = const AndroidCacheMode._internal(3);
-
-  bool operator ==(value) => value == _value;
-
-  @override
-  int get hashCode => _value.hashCode;
+  static const LOAD_CACHE_ONLY = const AndroidCacheMode_._internal(3);
 }