working on iOS inline webview implementation

example/ios/Runner/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key></key>
+	<string></string>
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSAllowsLocalNetworking</key>
@@ -44,6 +46,8 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
+	<key>io.flutter.embedded_views_preview</key>
+    <true/>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
 </dict>

flutter_inappbrowser.iml

@@ -20,6 +20,7 @@
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/.dart_tool" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/.pub" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/build" />
+      <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/ios/Flutter/flutter_assets/packages" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/Flutter/flutter_assets/packages" />
     </content>
     <orderEntry type="sourceFolder" forTests="false" />

ios/Classes/InAppBrowserWebViewController.swift

@@ -130,9 +130,9 @@ func convertToDictionary(text: String) -> [String: Any]? {
 //}
 
 class InAppWebView_IBWrapper: InAppWebView {
-    required convenience init?(coder: NSCoder) {
+    required convenience init(coder: NSCoder) {
         let config = WKWebViewConfiguration()
-        self.init(frame: .zero, configuration: config)
+        self.init(frame: .zero, configuration: config, IABController: nil, IAWController: nil)
         self.translatesAutoresizingMaskIntoConstraints = false
     }
 }
@@ -176,6 +176,7 @@ class InAppBrowserWebViewController: UIViewController, UIScrollViewDelegate, WKU
     }
     
     override func viewWillAppear(_ animated: Bool) {
+        self.webView.IABController = self
         if !viewPrepared {
             prepareConstraints()
             prepareWebView()

ios/Classes/SwiftFlutterPlugin.swift

@@ -36,7 +36,7 @@ extension Dictionary where Key: ExpressibleByStringLiteral {
 public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
     
     static var registrar: FlutterPluginRegistrar?
-    var channel: FlutterMethodChannel
+    static var channel: FlutterMethodChannel?
     
     var webViewControllers: [String: InAppBrowserWebViewController?] = [:]
     var safariViewControllers: [String: Any?] = [:]
@@ -45,7 +45,7 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
     private var previousStatusBarStyle = -1
     
     public init(with registrar: FlutterPluginRegistrar) {
-        channel = FlutterMethodChannel(name: "com.pichillilorenzo/flutter_inappbrowser", binaryMessenger: registrar.messenger())
+        SwiftFlutterPlugin.channel = FlutterMethodChannel(name: "com.pichillilorenzo/flutter_inappbrowser", binaryMessenger: registrar.messenger())
     }
     
     public static func register(with registrar: FlutterPluginRegistrar) {
@@ -220,14 +220,14 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                 }
                 break
             case "setOptions":
-                let optionsType = arguments!["optionsType"] as! String;
+                let optionsType = arguments!["optionsType"] as! String
                 switch (optionsType){
                     case "InAppBrowserOptions":
-                        let inAppBrowserOptions = InAppBrowserOptions();
-                        let inAppBroeserOptionsMap = arguments!["options"] as! [String: Any];
-                        inAppBrowserOptions.parse(options: inAppBroeserOptionsMap);
-                        self.setOptions(uuid: uuid, options: inAppBrowserOptions, optionsMap: inAppBroeserOptionsMap);
-                        break;
+                        let inAppBrowserOptions = InAppBrowserOptions()
+                        let inAppBrowserOptionsMap = arguments!["options"] as! [String: Any]
+                        inAppBrowserOptions.parse(options: inAppBrowserOptionsMap)
+                        self.setOptions(uuid: uuid, options: inAppBrowserOptions, optionsMap: inAppBrowserOptionsMap)
+                        break
                     default:
                         result(FlutterError(code: "InAppBrowserFlutterPlugin", message: "Options " + optionsType + " not available.", details: nil))
                 }
@@ -237,8 +237,8 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                 result(self.getOptions(uuid: uuid))
                 break
             case "getCopyBackForwardList":
-                result(self.getCopyBackForwardList(uuid: uuid));
-                break;
+                result(self.getCopyBackForwardList(uuid: uuid))
+                break
             default:
                 result(FlutterMethodNotImplemented)
                 break
@@ -279,7 +279,7 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                 
                 let optionsFallback = (arguments["optionsFallback"] as? [String: Any])!
                 
-                open(uuid: uuid, uuidFallback: uuidFallback, inAppBrowser: absoluteUrl!, headers: headers, withOptions: safariOptions, useChromeSafariBrowser: true, withOptionsFallback: optionsFallback, result: result);
+                open(uuid: uuid, uuidFallback: uuidFallback, inAppBrowser: absoluteUrl!, headers: headers, withOptions: safariOptions, useChromeSafariBrowser: true, withOptionsFallback: optionsFallback, result: result)
             }
             else {
                 let options = (arguments["options"] as? [String: Any])!
@@ -702,21 +702,21 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
     
     func onBrowserCreated(uuid: String, webView: WKWebView) {
         if let webViewController = self.webViewControllers[uuid] {
-            channel.invokeMethod("onBrowserCreated", arguments: ["uuid": uuid])
+            SwiftFlutterPlugin.channel!.invokeMethod("onBrowserCreated", arguments: ["uuid": uuid])
         }
     }
     
     func onLoadStart(uuid: String, webView: WKWebView) {
         if let webViewController = self.webViewControllers[uuid] {
             let url: String = webViewController!.currentURL!.absoluteString
-            channel.invokeMethod("onLoadStart", arguments: ["uuid": uuid, "url": url])
+            SwiftFlutterPlugin.channel!.invokeMethod("onLoadStart", arguments: ["uuid": uuid, "url": url])
         }
     }
     
     func onLoadStop(uuid: String, webView: WKWebView) {
         if let webViewController = self.webViewControllers[uuid] {
             let url: String = webViewController!.currentURL!.absoluteString
-            channel.invokeMethod("onLoadStop", arguments: ["uuid": uuid, "url": url])
+            SwiftFlutterPlugin.channel!.invokeMethod("onLoadStop", arguments: ["uuid": uuid, "url": url])
         }
     }
     
@@ -724,13 +724,13 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
         if let webViewController = self.webViewControllers[uuid] {
             let url: String = webViewController!.currentURL!.absoluteString
             let arguments = ["uuid": uuid, "url": url, "code": error._code, "message": error.localizedDescription] as [String : Any]
-            channel.invokeMethod("onLoadError", arguments: arguments)
+            SwiftFlutterPlugin.channel!.invokeMethod("onLoadError", arguments: arguments)
         }
     }
     
     func onProgressChanged(uuid: String, webView: WKWebView, progress: Int) {
         if let webViewController = self.webViewControllers[uuid] {
-            channel.invokeMethod("onProgressChanged", arguments: ["uuid": uuid, "progress": progress])
+            SwiftFlutterPlugin.channel!.invokeMethod("onProgressChanged", arguments: ["uuid": uuid, "progress": progress])
         }
     }
     
@@ -758,50 +758,50 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                     "method": request!.httpMethod!
                 ]
             ]
-            channel.invokeMethod("onLoadResource", arguments: arguments)
+            SwiftFlutterPlugin.channel!.invokeMethod("onLoadResource", arguments: arguments)
         }
     }
     
     func onScrollChanged(uuid: String, webView: WKWebView, x: Int, y: Int) {
         if let webViewController = self.webViewControllers[uuid] {
-            channel.invokeMethod("onScrollChanged", arguments: ["uuid": uuid, "x": x, "y": y])
+            SwiftFlutterPlugin.channel!.invokeMethod("onScrollChanged", arguments: ["uuid": uuid, "x": x, "y": y])
         }
     }
     
     func onExit(uuid: String) {
-        channel.invokeMethod("onExit", arguments: ["uuid": uuid])
+        SwiftFlutterPlugin.channel!.invokeMethod("onExit", arguments: ["uuid": uuid])
     }
     
     func shouldOverrideUrlLoading(uuid: String, webView: WKWebView, url: URL) {
         if self.webViewControllers[uuid] != nil {
-            channel.invokeMethod("shouldOverrideUrlLoading", arguments: ["uuid": uuid, "url": url.absoluteString])
+            SwiftFlutterPlugin.channel!.invokeMethod("shouldOverrideUrlLoading", arguments: ["uuid": uuid, "url": url.absoluteString])
         }
     }
     
     func onConsoleMessage(uuid: String, sourceURL: String, lineNumber: Int, message: String, messageLevel: String) {
         if self.webViewControllers[uuid] != nil {
-            channel.invokeMethod("onConsoleMessage", arguments: ["uuid": uuid, "sourceURL": sourceURL, "lineNumber": lineNumber, "message": message, "messageLevel": messageLevel])
+            SwiftFlutterPlugin.channel!.invokeMethod("onConsoleMessage", arguments: ["uuid": uuid, "sourceURL": sourceURL, "lineNumber": lineNumber, "message": message, "messageLevel": messageLevel])
         }
     }
     
     func onChromeSafariBrowserOpened(uuid: String) {
         if self.safariViewControllers[uuid] != nil {
-            channel.invokeMethod("onChromeSafariBrowserOpened", arguments: ["uuid": uuid])
+            SwiftFlutterPlugin.channel!.invokeMethod("onChromeSafariBrowserOpened", arguments: ["uuid": uuid])
         }
     }
     
     func onChromeSafariBrowserLoaded(uuid: String) {
         if self.safariViewControllers[uuid] != nil {
-            channel.invokeMethod("onChromeSafariBrowserLoaded", arguments: ["uuid": uuid])
+            SwiftFlutterPlugin.channel!.invokeMethod("onChromeSafariBrowserLoaded", arguments: ["uuid": uuid])
         }
     }
     
     func onChromeSafariBrowserClosed(uuid: String) {
-        channel.invokeMethod("onChromeSafariBrowserClosed", arguments: ["uuid": uuid])
+        SwiftFlutterPlugin.channel!.invokeMethod("onChromeSafariBrowserClosed", arguments: ["uuid": uuid])
     }
     
     func onCallJsHandler(uuid: String, webView: WKWebView, handlerName: String, args: String) {
-        channel.invokeMethod("onCallJsHandler", arguments: ["uuid": uuid, "handlerName": handlerName, "args": args])
+        SwiftFlutterPlugin.channel!.invokeMethod("onCallJsHandler", arguments: ["uuid": uuid, "handlerName": handlerName, "args": args])
     }
     
     func safariExit(uuid: String) {