Added CustomPathHandler class to be able to implement Android custom path handlers for WebViewAssetLoader

flutter_inappwebview/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 6.0.0-rc.2
+
+- Updated minimum platform interface and implementation versions
+- Added `CustomPathHandler` class to be able to implement Android custom path handlers for `WebViewAssetLoader`
+
 ## 6.0.0-rc.1
 
 - Updated minimum platform interface and implementation versions

flutter_inappwebview/example/lib/main.dart

@@ -14,8 +14,7 @@ import 'package:pointer_interceptor/pointer_interceptor.dart';
 // import 'package:path_provider/path_provider.dart';
 // import 'package:permission_handler/permission_handler.dart';
 
-InAppLocalhostServer localhostServer =
-    InAppLocalhostServer(documentRoot: 'assets');
+final localhostServer = InAppLocalhostServer(documentRoot: 'assets');
 
 Future main() async {
   WidgetsFlutterBinding.ensureInitialized();

flutter_inappwebview/example/pubspec.yaml

@@ -27,6 +27,7 @@ dependencies:
   permission_handler: 10.2.0
   url_launcher: 6.1.11
   pointer_interceptor: ^0.9.3+4
+  # mime: ^1.0.4
   # connectivity: ^0.4.5+6
   flutter_inappwebview:
     path: ../

flutter_inappwebview/lib/src/webview_asset_loader.dart

@@ -106,3 +106,27 @@ class InternalStoragePathHandler extends PathHandler {
 
   String get directory => platform.directory;
 }
+
+///{@macro flutter_inappwebview_platform_interface.PlatformCustomPathHandler}
+abstract class CustomPathHandler extends PathHandler {
+  ///{@macro flutter_inappwebview_platform_interface.PlatformCustomPathHandler}
+  CustomPathHandler({required String path})
+      : this.fromPlatformCreationParams(
+            params: PlatformCustomPathHandlerCreationParams(
+                PlatformPathHandlerCreationParams(path: path)));
+
+  /// Constructs a [CustomPathHandler].
+  ///
+  /// See [CustomPathHandler.fromPlatformCreationParams] for setting parameters for
+  /// a specific platform.
+  CustomPathHandler.fromPlatformCreationParams({
+    required PlatformCustomPathHandlerCreationParams params,
+  }) : this.fromPlatform(platform: PlatformCustomPathHandler(params));
+
+  /// Constructs a [CustomPathHandler] from a specific platform implementation.
+  CustomPathHandler.fromPlatform({required this.platform})
+      : super.fromPlatform(platform: platform);
+
+  /// Implementation of [PlatformCustomPathHandler] for the current platform.
+  final PlatformCustomPathHandler platform;
+}

flutter_inappwebview/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview
 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: 6.0.0-rc.1
+version: 6.0.0-rc.2
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues
@@ -18,11 +18,11 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_inappwebview_platform_interface: ^1.0.7
-  flutter_inappwebview_android: ^1.0.9
-  flutter_inappwebview_ios: ^1.0.10
-  flutter_inappwebview_macos: ^1.0.8
-  flutter_inappwebview_web: ^1.0.5
+  flutter_inappwebview_platform_interface: ^1.0.8
+  flutter_inappwebview_android: ^1.0.10
+  flutter_inappwebview_ios: ^1.0.11
+  flutter_inappwebview_macos: ^1.0.9
+  flutter_inappwebview_web: ^1.0.6
 
 dev_dependencies:
   flutter_test:

flutter_inappwebview_android/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.0.10
+
+- Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.8`
+- Implemented `PlatformCustomPathHandler` class
+
 ## 1.0.9
 
 - Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.7`

flutter_inappwebview_android/example/pubspec.lock

@@ -93,10 +93,9 @@ packages:
   flutter_inappwebview_platform_interface:
     dependency: transitive
     description:
-      name: flutter_inappwebview_platform_interface
-      sha256: b4db31621880c4f4a60c9ddfc01d2b9f0133bf7776ddbd3a1d34062c076afec7
-      url: "https://pub.dev"
-    source: hosted
+      path: "../../flutter_inappwebview_platform_interface"
+      relative: true
+    source: path
     version: "1.0.7"
   flutter_lints:
     dependency: "direct dev"

flutter_inappwebview_android/lib/src/inappwebview_platform.dart

@@ -313,6 +313,17 @@ class AndroidInAppWebViewPlatform extends InAppWebViewPlatform {
     return AndroidInternalStoragePathHandler(params);
   }
 
+  /// Creates a new [AndroidCustomPathHandler].
+  ///
+  /// This function should only be called by the app-facing package.
+  /// Look at using [CustomPathHandler] in `flutter_inappwebview` instead.
+  @override
+  AndroidCustomPathHandler createPlatformCustomPathHandler(
+    PlatformCustomPathHandlerCreationParams params,
+  ) {
+    return AndroidCustomPathHandler(params);
+  }
+
   /// Creates a new [wv.AndroidWebViewFeature].
   ///
   /// This function should only be called by the app-facing package.

flutter_inappwebview_android/lib/src/webview_asset_loader.dart

@@ -198,3 +198,40 @@ class AndroidInternalStoragePathHandler
     return {...toMap(), 'directory': directory};
   }
 }
+
+/// Object specifying creation parameters for creating a [AndroidCustomPathHandler].
+///
+/// When adding additional fields make sure they can be null or have a default
+/// value to avoid breaking changes. See [PlatformCustomPathHandlerCreationParams] for
+/// more information.
+@immutable
+class AndroidCustomPathHandlerCreationParams
+    extends PlatformCustomPathHandlerCreationParams {
+  /// Creates a new [AndroidCustomPathHandlerCreationParams] instance.
+  AndroidCustomPathHandlerCreationParams(
+    // This parameter prevents breaking changes later.
+    // ignore: avoid_unused_constructor_parameters
+    PlatformCustomPathHandlerCreationParams params,
+  ) : super(params);
+
+  /// Creates a [AndroidCustomPathHandlerCreationParams] instance based on [PlatformCustomPathHandlerCreationParams].
+  factory AndroidCustomPathHandlerCreationParams.fromPlatformCustomPathHandlerCreationParams(
+      PlatformCustomPathHandlerCreationParams params) {
+    return AndroidCustomPathHandlerCreationParams(params);
+  }
+}
+
+///{@macro flutter_inappwebview_platform_interface.PlatformCustomPathHandler}
+class AndroidCustomPathHandler extends PlatformCustomPathHandler
+    with AndroidPathHandler, ChannelController {
+  /// Constructs a [AndroidCustomPathHandler].
+  AndroidCustomPathHandler(PlatformCustomPathHandlerCreationParams params)
+      : super.implementation(
+          params is AndroidCustomPathHandlerCreationParams
+              ? params
+              : AndroidCustomPathHandlerCreationParams
+                  .fromPlatformCustomPathHandlerCreationParams(params),
+        ) {
+    _init(params);
+  }
+}

flutter_inappwebview_android/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview_android
 description: Android implementation of the flutter_inappwebview plugin.
-version: 1.0.9
+version: 1.0.10
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview/tree/master/flutter_inappwebview_android
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues
@@ -18,7 +18,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_inappwebview_platform_interface: ^1.0.7
+  flutter_inappwebview_platform_interface: ^1.0.8
 
 dev_dependencies:
   flutter_test:

flutter_inappwebview_ios/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.11
+
+- Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.8`
+
 ## 1.0.10
 
 - Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.7`

flutter_inappwebview_ios/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview_ios
 description: iOS implementation of the flutter_inappwebview plugin.
-version: 1.0.10
+version: 1.0.11
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview/tree/master/flutter_inappwebview_ios
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues
@@ -18,7 +18,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_inappwebview_platform_interface: ^1.0.7
+  flutter_inappwebview_platform_interface: ^1.0.8
 
 dev_dependencies:
   flutter_test:

flutter_inappwebview_macos/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.9
+
+- Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.8`
+
 ## 1.0.8
 
 - Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.7`

flutter_inappwebview_macos/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview_macos
 description: macOS implementation of the flutter_inappwebview plugin.
-version: 1.0.8
+version: 1.0.9
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview/tree/master/flutter_inappwebview_macos
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues
@@ -18,7 +18,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_inappwebview_platform_interface: ^1.0.7
+  flutter_inappwebview_platform_interface: ^1.0.8
 
 dev_dependencies:
   flutter_test:

flutter_inappwebview_platform_interface/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.8
+
+- Added `PlatformCustomPathHandler` class to be able to implement custom path handlers for `WebViewAssetLoader`
+
 ## 1.0.7
 
 - Added `InAppBrowser.onMainWindowWillClose` event

flutter_inappwebview_platform_interface/lib/src/inappwebview_platform.dart

@@ -371,6 +371,17 @@ abstract class InAppWebViewPlatform extends PlatformInterface {
         'createPlatformInternalStoragePathHandler is not implemented on the current platform.');
   }
 
+  /// Creates a new [PlatformCustomPathHandler].
+  ///
+  /// This function should only be called by the app-facing package.
+  /// Look at using [CustomPathHandler] in `flutter_inappwebview` instead.
+  PlatformCustomPathHandler createPlatformCustomPathHandler(
+    PlatformCustomPathHandlerCreationParams params,
+  ) {
+    throw UnimplementedError(
+        'createPlatformCustomPathHandler is not implemented on the current platform.');
+  }
+
   /// Creates a new [PlatformWebViewFeature].
   ///
   /// This function should only be called by the app-facing package.

flutter_inappwebview_platform_interface/lib/src/platform_webview_asset_loader.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter_inappwebview_internal_annotations/flutter_inappwebview_internal_annotations.dart';
+import 'package:flutter_inappwebview_platform_interface/flutter_inappwebview_platform_interface.dart';
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
 
 import 'inappwebview_platform.dart';
@@ -122,7 +123,7 @@ class PlatformAssetsPathHandlerCreationParams
     PlatformPathHandlerCreationParams params,
   ) : super(path: params.path);
 
-  /// Creates a [AndroidCookieManagerCreationParams] instance based on [PlatformCookieManagerCreationParams].
+  /// Creates a [PlatformAssetsPathHandlerCreationParams] instance based on [PlatformPathHandlerCreationParams].
   factory PlatformAssetsPathHandlerCreationParams.fromPlatformPathHandlerCreationParams(
       PlatformPathHandlerCreationParams params) {
     return PlatformAssetsPathHandlerCreationParams(params);
@@ -195,7 +196,7 @@ class PlatformResourcesPathHandlerCreationParams
     PlatformPathHandlerCreationParams params,
   ) : super(path: params.path);
 
-  /// Creates a [AndroidCookieManagerCreationParams] instance based on [PlatformCookieManagerCreationParams].
+  /// Creates a [PlatformResourcesPathHandlerCreationParams] instance based on [PlatformPathHandlerCreationParams].
   factory PlatformResourcesPathHandlerCreationParams.fromPlatformPathHandlerCreationParams(
       PlatformPathHandlerCreationParams params) {
     return PlatformResourcesPathHandlerCreationParams(params);
@@ -271,7 +272,7 @@ class PlatformInternalStoragePathHandlerCreationParams
       {required this.directory})
       : super(path: params.path);
 
-  /// Creates a [AndroidCookieManagerCreationParams] instance based on [PlatformCookieManagerCreationParams].
+  /// Creates a [PlatformInternalStoragePathHandlerCreationParams] instance based on [PlatformPathHandlerCreationParams].
   factory PlatformInternalStoragePathHandlerCreationParams.fromPlatformPathHandlerCreationParams(
       PlatformPathHandlerCreationParams params,
       {required String directory}) {
@@ -342,3 +343,74 @@ abstract class PlatformInternalStoragePathHandler extends PlatformInterface
 
   String get directory => params.directory;
 }
+
+/// Object specifying creation parameters for creating a [PlatformCustomPathHandler].
+///
+/// Platform specific implementations can add additional fields by extending
+/// this class.
+@immutable
+class PlatformCustomPathHandlerCreationParams
+    extends PlatformPathHandlerCreationParams {
+  /// Used by the platform implementation to create a new [PlatformCustomPathHandler].
+  PlatformCustomPathHandlerCreationParams(
+    // This parameter prevents breaking changes later.
+    // ignore: avoid_unused_constructor_parameters
+    PlatformPathHandlerCreationParams params,
+  ) : super(path: params.path);
+
+  /// Creates a [PlatformCustomPathHandlerCreationParams] instance based on [PlatformPathHandlerCreationParams].
+  factory PlatformCustomPathHandlerCreationParams.fromPlatformPathHandlerCreationParams(
+      PlatformPathHandlerCreationParams params) {
+    return PlatformCustomPathHandlerCreationParams(params);
+  }
+}
+
+///{@template flutter_inappwebview_platform_interface.PlatformCustomPathHandler}
+///Custom handler class used to implement a custom logic to open a file.
+///
+///The matched prefix path used shouldn't be a prefix of a real web path.
+///Thus, if the requested file cannot be found a [WebResourceResponse] object with a `null` data will be returned instead of `null`.
+///This saves the time of falling back to network and trying to resolve a path that doesn't exist.
+///A [WebResourceResponse] with `null` data will be received as an HTTP response with status code `404` and no body.
+///
+///The MIME type for the file will be determined from the file's extension using
+///[guessContentTypeFromName](https://developer.android.com/reference/java/net/URLConnection.html#guessContentTypeFromName-java.lang.String-).
+///Developers should ensure that asset files are named using standard file extensions.
+///If the file does not have a recognised extension, `text/plain` will be used by default.
+///{@endtemplate}
+abstract class PlatformCustomPathHandler extends PlatformInterface
+    implements PlatformPathHandler {
+  /// Creates a new [PlatformCustomPathHandler]
+  factory PlatformCustomPathHandler(
+      PlatformCustomPathHandlerCreationParams params) {
+    assert(
+      InAppWebViewPlatform.instance != null,
+      'A platform implementation for `flutter_inappwebview` has not been set. Please '
+      'ensure that an implementation of `InAppWebViewPlatform` has been set to '
+      '`InAppWebViewPlatform.instance` before use. For unit testing, '
+      '`InAppWebViewPlatform.instance` can be set with your own test implementation.',
+    );
+    final PlatformCustomPathHandler customPathHandler =
+        InAppWebViewPlatform.instance!.createPlatformCustomPathHandler(params);
+    PlatformInterface.verify(customPathHandler, _token);
+    return customPathHandler;
+  }
+
+  /// Used by the platform implementation to create a new [PlatformCustomPathHandler].
+  ///
+  /// Should only be used by platform implementations because they can't extend
+  /// a class that only contains a factory constructor.
+  @protected
+  PlatformCustomPathHandler.implementation(this.params) : super(token: _token);
+
+  static final Object _token = Object();
+
+  /// The parameters used to initialize the [PlatformCustomPathHandler].
+  final PlatformCustomPathHandlerCreationParams params;
+
+  @override
+  String get type => 'CustomPathHandler';
+
+  @override
+  String get path => params.path;
+}

flutter_inappwebview_platform_interface/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview_platform_interface
 description: A common platform interface for the flutter_inappwebview plugin.
-version: 1.0.7
+version: 1.0.8
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview/tree/master/flutter_inappwebview_platform_interface
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues

flutter_inappwebview_web/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.6
+
+- Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.8`
+
 ## 1.0.5
 
 - Updated `flutter_inappwebview_platform_interface` version dependency to `^1.0.7`

flutter_inappwebview_web/pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview_web
 description: Web implementation of the flutter_inappwebview plugin.
-version: 1.0.5
+version: 1.0.6
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview/tree/master/flutter_inappwebview_web
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues
@@ -21,7 +21,7 @@ dependencies:
   flutter_web_plugins:
     sdk: flutter
   js: ^0.6.4
-  flutter_inappwebview_platform_interface: ^1.0.7
+  flutter_inappwebview_platform_interface: ^1.0.8
 
 dev_dependencies:
   flutter_test: