Merge pull request #1 from flickerlist/flicker-master-2

Support keyboardDisplayRequiresUserAction to focus automaticlly in iOS

Author: nirmal0707

dev_packages/generators/pubspec.yaml

@@ -4,8 +4,8 @@ version: 1.0.0
 publish_to: none
 
 environment:
-  sdk: ^3.5.0
-  flutter: ">=3.24.0"
+  sdk: ">=3.4.0"
+  flutter: ">=3.22.3"
 
 dependencies:
   flutter:

flutter_inappwebview/lib/src/in_app_webview/in_app_webview_controller.dart

@@ -290,6 +290,9 @@ class InAppWebViewController {
   Future<InAppWebViewHitTestResult?> getHitTestResult() =>
       platform.getHitTestResult();
 
+  ///{@macro flutter_inappwebview_platform_interface.PlatformInAppWebViewController.requestFocus}
+  Future<void> requestFocus() => platform.requestFocus();
+
   ///{@macro flutter_inappwebview_platform_interface.PlatformInAppWebViewController.clearFocus}
   Future<void> clearFocus() => platform.clearFocus();
 

flutter_inappwebview/pubspec.yaml

@@ -14,8 +14,8 @@ topics:
   - browser
 
 environment:
-  sdk: ^3.5.0
-  flutter: ">=3.24.0"
+  sdk: ^3.4.0
+  flutter: ">=3.22.3"
 
 dependencies:
   flutter:

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

@@ -468,6 +468,12 @@ public void onReceiveValue(String value) {
           result.success(false);
         }
         break;
+      case requestFocus:
+        if (webView != null) {
+          webView.requestFocus();
+        }
+        result.success(true);
+        break;
       case clearFocus:
         if (webView != null) {
           webView.clearFocus();

flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/webview/WebViewChannelDelegateMethods.java

@@ -62,6 +62,7 @@ public enum WebViewChannelDelegateMethods {
   saveWebArchive,
   zoomIn,
   zoomOut,
+  requestFocus,
   clearFocus,
   setContextMenu,
   requestFocusNodeHref,

flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/webview/in_app_webview/InputAwareWebView.java

@@ -150,6 +150,11 @@ public boolean checkInputConnectionProxy(final View view) {
   public void clearFocus() {
     super.clearFocus();
 
+    InputMethodManager inputManager = (InputMethodManager) this.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+    if (inputManager != null) {
+      inputManager.hideSoftInputFromWindow(this.getWindowToken(), 0);
+    }
+
     if (useHybridComposition) {
       return;
     }

flutter_inappwebview_android/lib/src/in_app_webview/in_app_webview_controller.dart

@@ -2241,6 +2241,12 @@ class AndroidInAppWebViewController extends PlatformInAppWebViewController
     return InAppWebViewHitTestResult(type: type, extra: extra);
   }
 
+  @override
+  Future<void> requestFocus() async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    return await channel?.invokeMethod('requestFocus', args);
+  }
+
   @override
   Future<void> clearFocus() async {
     Map<String, dynamic> args = <String, dynamic>{};

flutter_inappwebview_android/pubspec.yaml

@@ -14,8 +14,8 @@ topics:
   - browser
 
 environment:
-  sdk: ^3.5.0
-  flutter: ">=3.24.0"
+  sdk: ">=3.4.0"
+  flutter: ">=3.22.3"
 
 dependencies:
   flutter:

flutter_inappwebview_ios/ios/Classes/InAppWebView/InAppWebView.swift

@@ -9,6 +9,75 @@ import Flutter
 import Foundation
 import WebKit
 
+// Support `keyboardDisplayRequiresUserAction` to focus automaticlly
+typealias OldClosureType =  @convention(c) (Any, Selector, UnsafeRawPointer, Bool, Bool, Any?) -> Void
+typealias NewClosureType =  @convention(c) (Any, Selector, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void
+extension WKWebView{
+    var keyboardDisplayRequiresUserAction: Bool? {
+        get {
+            return self.keyboardDisplayRequiresUserAction
+        }
+        set {
+            self.setKeyboardRequiresUserInteraction(newValue ?? true)
+        }
+    }
+
+    func setKeyboardRequiresUserInteraction( _ value: Bool) {
+        guard let WKContentView: AnyClass = NSClassFromString("WKContentView") else {
+            print("keyboardDisplayRequiresUserAction extension: Cannot find the WKContentView class")
+            return
+        }
+        // For iOS 10, *
+        let sel_10: Selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:")
+        // For iOS 11.3, *
+        let sel_11_3: Selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:")
+        // For iOS 12.2, *
+        let sel_12_2: Selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:changingActivityState:userObject:")
+        // For iOS 13.0, *
+        let sel_13_0: Selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:activityStateChanges:userObject:")
+
+        if let method = class_getInstanceMethod(WKContentView, sel_10) {
+            let originalImp: IMP = method_getImplementation(method)
+            let original: OldClosureType = unsafeBitCast(originalImp, to: OldClosureType.self)
+            let block : @convention(block) (Any, UnsafeRawPointer, Bool, Bool, Any?) -> Void = { (me, arg0, arg1, arg2, arg3) in
+                original(me, sel_10, arg0, !value, arg2, arg3)
+            }
+            let imp: IMP = imp_implementationWithBlock(block)
+            method_setImplementation(method, imp)
+        }
+
+        if let method = class_getInstanceMethod(WKContentView, sel_11_3) {
+            let originalImp: IMP = method_getImplementation(method)
+            let original: NewClosureType = unsafeBitCast(originalImp, to: NewClosureType.self)
+            let block : @convention(block) (Any, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void = { (me, arg0, arg1, arg2, arg3, arg4) in
+                original(me, sel_11_3, arg0, !value, arg2, arg3, arg4)
+            }
+            let imp: IMP = imp_implementationWithBlock(block)
+            method_setImplementation(method, imp)
+        }
+
+        if let method = class_getInstanceMethod(WKContentView, sel_12_2) {
+            let originalImp: IMP = method_getImplementation(method)
+            let original: NewClosureType = unsafeBitCast(originalImp, to: NewClosureType.self)
+            let block : @convention(block) (Any, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void = { (me, arg0, arg1, arg2, arg3, arg4) in
+                original(me, sel_12_2, arg0, !value, arg2, arg3, arg4)
+            }
+            let imp: IMP = imp_implementationWithBlock(block)
+            method_setImplementation(method, imp)
+        }
+
+        if let method = class_getInstanceMethod(WKContentView, sel_13_0) {
+            let originalImp: IMP = method_getImplementation(method)
+            let original: NewClosureType = unsafeBitCast(originalImp, to: NewClosureType.self)
+            let block : @convention(block) (Any, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void = { (me, arg0, arg1, arg2, arg3, arg4) in
+                original(me, sel_13_0, arg0, !value, arg2, arg3, arg4)
+            }
+            let imp: IMP = imp_implementationWithBlock(block)
+            method_setImplementation(method, imp)
+        }
+    }
+}
+
 public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate,
                             WKNavigationDelegate, WKScriptMessageHandler, UIGestureRecognizerDelegate,
                             WKDownloadDelegate,
@@ -81,6 +150,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate,
         }
         self.contextMenu = contextMenu
         self.initialUserScripts = userScripts
+        self.keyboardDisplayRequiresUserAction = false
         uiDelegate = self
         navigationDelegate = self
         scrollView.delegate = self
@@ -3138,6 +3208,10 @@ if(window.\(JAVASCRIPT_BRIDGE_NAME)[\(_callHandlerID)] != null) {
         }
     }
 
+    public func requestFocus() {
+        self.scrollView.subviews.first?.becomeFirstResponder()
+    }
+    
     public func clearFocus() {
         self.scrollView.subviews.first?.resignFirstResponder()
     }

flutter_inappwebview_ios/ios/Classes/InAppWebView/WebViewChannelDelegate.swift

@@ -344,6 +344,10 @@ public class WebViewChannelDelegate: ChannelDelegate {
                 result(nil)
             }
             break
+        case .requestFocus:
+            webView?.requestFocus()
+            result(true)
+            break
         case .clearFocus:
             webView?.clearFocus()
             result(true)