added loadSimulatedRequest iOS webview method

CHANGELOG.md

@@ -6,7 +6,7 @@
 - Added `PrintJobController` to manage print jobs
 - Added `WebAuthenticationSession` for iOS
 - Added `FindInteractionController` for Android and iOS
-- Added `pauseAllMediaPlayback`, `setAllMediaPlaybackSuspended`, `closeAllMediaPresentations`, `requestMediaPlaybackState`, `isInFullscreen`, `getCameraCaptureState`, `setCameraCaptureState`, `getMicrophoneCaptureState`, `setMicrophoneCaptureState` WebView controller methods
+- Added `pauseAllMediaPlayback`, `setAllMediaPlaybackSuspended`, `closeAllMediaPresentations`, `requestMediaPlaybackState`, `isInFullscreen`, `getCameraCaptureState`, `setCameraCaptureState`, `getMicrophoneCaptureState`, `setMicrophoneCaptureState`, `loadSimulatedRequest` WebView controller methods
 - Added `underPageBackgroundColor`, `isTextInteractionEnabled`, `isSiteSpecificQuirksModeEnabled`, `upgradeKnownHostsToHTTPS`, `forceDarkStrategy`, `willSuppressErrorPage`, `algorithmicDarkeningAllowed`, `requestedWithHeaderMode`, `enterpriseAuthenticationAppLinkPolicyEnabled`, `isElementFullscreenEnabled`, `isFindInteractionEnabled`, `minimumViewportInset`, `maximumViewportInset` WebView settings
 - Added `onCameraCaptureStateChanged`, `onMicrophoneCaptureStateChanged` WebView events
 - Added support for `onPermissionRequest` event on iOS 15.0+

example/integration_test/in_app_webview/load_url.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
@@ -8,7 +9,7 @@ import 'package:flutter_test/flutter_test.dart';
 import '../constants.dart';
 
 void loadUrl() {
-  final shouldSkip = kIsWeb ? false :
+  final shouldSkip1 = kIsWeb ? false :
       ![
         TargetPlatform.android,
         TargetPlatform.iOS,
@@ -49,5 +50,49 @@ void loadUrl() {
     await controller.loadUrl(
         urlRequest: URLRequest(url: TEST_CROSS_PLATFORM_URL_1));
     expect(await loadedUrl.future, TEST_CROSS_PLATFORM_URL_1.toString());
-  }, skip: shouldSkip);
+  }, skip: shouldSkip1);
+
+  final shouldSkip2 = kIsWeb ? false :
+  ![
+    TargetPlatform.iOS,
+    TargetPlatform.macOS,
+  ].contains(defaultTargetPlatform);
+
+  testWidgets('loadSimulatedRequest', (WidgetTester tester) async {
+    final Completer controllerCompleter = Completer<InAppWebViewController>();
+    final Completer<String> firstUrlLoad = Completer<String>();
+    final Completer<String> loadedUrl = Completer<String>();
+
+    await tester.pumpWidget(
+      Directionality(
+        textDirection: TextDirection.ltr,
+        child: InAppWebView(
+          key: GlobalKey(),
+          initialUrlRequest:
+          URLRequest(url: initialUrl),
+          onWebViewCreated: (controller) {
+            controllerCompleter.complete(controller);
+          },
+          onLoadStop: (controller, url) {
+            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;
+    expect(await firstUrlLoad.future, initialUrl.toString());
+
+    final htmlCode = "<h1>Hello</h1>";
+    await controller.loadSimulatedRequest(
+        urlRequest: URLRequest(url: TEST_CROSS_PLATFORM_URL_1),
+        data: Uint8List.fromList(utf8.encode(htmlCode))
+    );
+    expect(await loadedUrl.future, TEST_CROSS_PLATFORM_URL_1.toString());
+    expect(await controller.evaluateJavascript(source: "document.body").toString().trim(), htmlCode);
+  }, skip: shouldSkip2);
 }

ios/Classes/InAppWebView/WebViewChannelDelegate.swift

@@ -640,6 +640,23 @@ public class WebViewChannelDelegate : ChannelDelegate {
                 result(false)
             }
             break
+        case .loadSimulatedRequest:
+            if let webView = webView, #available(iOS 15.0, *) {
+                let request = URLRequest.init(fromPluginMap: arguments!["urlRequest"] as! [String:Any?])
+                let data = arguments!["data"] as! FlutterStandardTypedData
+                var response: URLResponse? = nil
+                if let urlResponse = arguments!["urlResponse"] as? [String:Any?] {
+                    response = URLResponse.init(fromPluginMap: urlResponse)
+                }
+                if let response = response {
+                    webView.loadSimulatedRequest(request, response: response, responseData: data.data)
+                } else {
+                    webView.loadSimulatedRequest(request, responseHTML: String(decoding: data.data, as: UTF8.self))
+                }
+                result(true)
+            } else {
+                result(false)
+            }
         }
     }
     

ios/Classes/InAppWebView/WebViewChannelDelegateMethods.swift

@@ -86,4 +86,5 @@ public enum WebViewChannelDelegateMethods: String {
     case setCameraCaptureState = "setCameraCaptureState"
     case getMicrophoneCaptureState = "getMicrophoneCaptureState"
     case setMicrophoneCaptureState = "setMicrophoneCaptureState"
+    case loadSimulatedRequest = "loadSimulatedRequest"
 }

ios/Classes/Types/URLResponse.swift

@@ -8,6 +8,14 @@
 import Foundation
 
 extension URLResponse {
+    public convenience init?(fromPluginMap: [String:Any?]) {
+        let url = URL(string: fromPluginMap["url"] as? String ?? "about:blank")!
+        let mimeType = fromPluginMap["mimeType"] as? String
+        let expectedContentLength = fromPluginMap["expectedContentLength"] as? Int64 ?? 0
+        let textEncodingName = fromPluginMap["textEncodingName"] as? String
+        self.init(url: url, mimeType: mimeType, expectedContentLength: Int(expectedContentLength), textEncodingName: textEncodingName)
+    }
+    
     public func toMap () -> [String:Any?] {
         let httpResponse: HTTPURLResponse? = self as? HTTPURLResponse
         return [

lib/src/in_app_webview/in_app_webview_controller.dart

@@ -1619,7 +1619,7 @@ class InAppWebViewController {
 
   ///Loads the given [url] with [postData] (x-www-form-urlencoded) using `POST` method into this WebView.
   ///
-  ///Example
+  ///Example:
   ///```dart
   ///var postData = Uint8List.fromList(utf8.encode("firstname=Foo&surname=Bar"));
   ///controller.postUrl(url: Uri.parse("https://www.example.com/"), postData: postData);
@@ -3371,6 +3371,36 @@ class InAppWebViewController {
     await _channel.invokeMethod('setMicrophoneCaptureState', args);
   }
 
+  ///Loads the web content from the data you provide as if the data were the response to the request.
+  ///If [urlResponse] is `null`, it loads the web content from the data as an utf8 encoded HTML string as the response to the request.
+  ///
+  ///[urlRequest] represents a URL request that specifies the base URL and other loading details the system uses to interpret the data you provide.
+  ///
+  ///[urlResponse] represents a response the system uses to interpret the data you provide.
+  ///
+  ///[data] represents the data or the utf8 encoded HTML string to use as the contents of the webpage.
+  ///
+  ///Example:
+  ///```dart
+  ///controller.loadSimulateloadSimulatedRequestdRequest(urlRequest: URLRequest(
+  ///    url: Uri.parse("https://flutter.dev"),
+  ///  ),
+  ///  data: Uint8List.fromList(utf8.encode("<h1>Hello</h1>"))
+  ///);
+  ///```
+  ///
+  ///**NOTE for iOS**: available on iOS 15.0+.
+  ///
+  ///**Supported Platforms/Implementations**:
+  ///- iOS ([Official API - WKWebView.loadSimulatedRequest(_:response:responseData:)](https://developer.apple.com/documentation/webkit/wkwebview/3763094-loadsimulatedrequest) and [Official API - WKWebView.loadSimulatedRequest(_:responseHTML:)](https://developer.apple.com/documentation/webkit/wkwebview/3763095-loadsimulatedrequest)).
+  Future<void> loadSimulatedRequest({required URLRequest urlRequest, required Uint8List data, URLResponse? urlResponse}) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('urlRequest', () => urlRequest.toMap());
+    args.putIfAbsent('data', () => data);
+    args.putIfAbsent('urlResponse', () => urlResponse?.toMap());
+    await _channel.invokeMethod('loadSimulatedRequest', args);
+  }
+
   ///Returns the iframe `id` attribute used on the Web platform.
   ///
   ///**Supported Platforms/Implementations**: