Added 'toString()' method to various classes in order to have a better output...

Added 'toString()' method to various classes in order to have a better output instead of simply 'Instance of ...', updated getOptions() method

CHANGELOG.md

 ## 3.3.0
 
+- Updated API docs
 - Updated Android context menu workaround
 - Calling `onCreateContextMenu` event on iOS also when the context menu is disabled in order to have the same effect as Android
 - Added Android keyboard workaround to hide the keyboard when clicking other HTML elements, losing the focus on the previous input
@@ -10,11 +11,13 @@
 - Added `getCurrentWebViewPackage` static webview method on Android
 - Added `onPageCommitVisible` webview event
 - Added `androidShouldInterceptRequest`, `androidOnRenderProcessUnresponsive`, `androidOnRenderProcessResponsive`, `androidOnRenderProcessGone`, `androidOnFormResubmission`, `androidOnScaleChanged` Android events
+- Added `toString()` method to various classes in order to have a better output instead of simply `Instance of ...`
 - Fixed `Print preview is not working? java.lang.IllegalStateException: Can print only from an activity` [#128](https://github.com/pichillilorenzo/flutter_inappwebview/issues/128)
 - Fixed `onJsAlert`, `onJsConfirm`, `onJsPrompt` for `InAppBrowser` on Android
 - Fixed `onActivityResult` for `InAppBrowser` on Android
 - Fixed `InAppBrowser.openWithSystemBrowser crash on iOS` [#358](https://github.com/pichillilorenzo/flutter_inappwebview/issues/358)
 - Fixed `Attempt to invoke virtual method 'java.util.Set java.util.HashMap.entrySet()' on a null object reference` [#367](https://github.com/pichillilorenzo/flutter_inappwebview/issues/367)
+- Fixed missing `allowsAirPlayForMediaPlayback` iOS webview options implementation
 
 ### BREAKING CHANGES
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/ChromeCustomTabs/ChromeCustomTabsActivity.java

@@ -29,13 +29,13 @@ public class ChromeCustomTabsActivity extends Activity implements MethodChannel.
   protected static final String LOG_TAG = "CustomTabsActivity";
   public MethodChannel channel;
   public String uuid;
-  private CustomTabsIntent.Builder builder;
-  private ChromeCustomTabsOptions options;
-  private CustomTabActivityHelper customTabActivityHelper;
-  private CustomTabsSession customTabsSession;
-  private final int CHROME_CUSTOM_TAB_REQUEST_CODE = 100;
-  private boolean onChromeSafariBrowserOpened = false;
-  private boolean onChromeSafariBrowserCompletedInitialLoad = false;
+  public CustomTabsIntent.Builder builder;
+  public ChromeCustomTabsOptions options;
+  public CustomTabActivityHelper customTabActivityHelper;
+  public CustomTabsSession customTabsSession;
+  protected final int CHROME_CUSTOM_TAB_REQUEST_CODE = 100;
+  protected boolean onChromeSafariBrowserOpened = false;
+  protected boolean onChromeSafariBrowserCompletedInitialLoad = false;
 
   @Override
   protected void onCreate(Bundle savedInstanceState) {

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/ChromeCustomTabs/ChromeCustomTabsOptions.java

 package com.pichillilorenzo.flutter_inappwebview.ChromeCustomTabs;
 
+import android.content.Intent;
+
 import com.pichillilorenzo.flutter_inappwebview.Options;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class ChromeCustomTabsOptions implements Options {
-
-    final static String LOG_TAG = "ChromeCustomTabsOptions";
+public class ChromeCustomTabsOptions implements Options<ChromeCustomTabsActivity> {
 
-    public Boolean addDefaultShareMenuItem = true;
-    public Boolean showTitle = true;
-    public String toolbarBackgroundColor = "";
-    public Boolean enableUrlBarHiding = false;
-    public Boolean instantAppsEnabled = false;
-    public String packageName;
-    public Boolean keepAliveEnabled = false;
+  final static String LOG_TAG = "ChromeCustomTabsOptions";
 
-    @Override
-    public ChromeCustomTabsOptions parse(HashMap<String, Object> options) {
-        for (Map.Entry<String, Object> pair : options.entrySet()) {
-            String key = pair.getKey();
-            Object value = pair.getValue();
-            if (value == null) {
-                continue;
-            }
+  public Boolean addDefaultShareMenuItem = true;
+  public Boolean showTitle = true;
+  public String toolbarBackgroundColor = "";
+  public Boolean enableUrlBarHiding = false;
+  public Boolean instantAppsEnabled = false;
+  public String packageName;
+  public Boolean keepAliveEnabled = false;
 
-            switch (key) {
-                case "addDefaultShareMenuItem":
-                    addDefaultShareMenuItem = (boolean) value;
-                    break;
-                case "showTitle":
-                    showTitle = (boolean) value;
-                    break;
-                case "toolbarBackgroundColor":
-                    toolbarBackgroundColor = (String) value;
-                    break;
-                case "enableUrlBarHiding":
-                    enableUrlBarHiding = (boolean) value;
-                    break;
-                case "instantAppsEnabled":
-                    instantAppsEnabled = (boolean) value;
-                    break;
-                case "packageName":
-                    packageName = (String) value;
-                    break;
-                case "keepAliveEnabled":
-                    keepAliveEnabled = (boolean) value;
-                    break;
-            }
-        }
+  @Override
+  public ChromeCustomTabsOptions parse(Map<String, Object> options) {
+    for (Map.Entry<String, Object> pair : options.entrySet()) {
+      String key = pair.getKey();
+      Object value = pair.getValue();
+      if (value == null) {
+        continue;
+      }
 
-        return this;
+      switch (key) {
+        case "addDefaultShareMenuItem":
+          addDefaultShareMenuItem = (boolean) value;
+          break;
+        case "showTitle":
+          showTitle = (boolean) value;
+          break;
+        case "toolbarBackgroundColor":
+          toolbarBackgroundColor = (String) value;
+          break;
+        case "enableUrlBarHiding":
+          enableUrlBarHiding = (boolean) value;
+          break;
+        case "instantAppsEnabled":
+          instantAppsEnabled = (boolean) value;
+          break;
+        case "packageName":
+          packageName = (String) value;
+          break;
+        case "keepAliveEnabled":
+          keepAliveEnabled = (boolean) value;
+          break;
+      }
     }
 
-    @Override
-    public HashMap<String, Object> getHashMap() {
-        HashMap<String, Object> options = new HashMap<>();
-        options.put("addDefaultShareMenuItem", addDefaultShareMenuItem);
-        options.put("showTitle", showTitle);
-        options.put("toolbarBackgroundColor", toolbarBackgroundColor);
-        options.put("enableUrlBarHiding", enableUrlBarHiding);
-        options.put("instantAppsEnabled", instantAppsEnabled);
-        options.put("packageName", packageName);
-        options.put("keepAliveEnabled", keepAliveEnabled);
-        return options;
+    return this;
+  }
+
+  @Override
+  public Map<String, Object> toMap() {
+    Map<String, Object> options = new HashMap<>();
+    options.put("addDefaultShareMenuItem", addDefaultShareMenuItem);
+    options.put("showTitle", showTitle);
+    options.put("toolbarBackgroundColor", toolbarBackgroundColor);
+    options.put("enableUrlBarHiding", enableUrlBarHiding);
+    options.put("instantAppsEnabled", instantAppsEnabled);
+    options.put("packageName", packageName);
+    options.put("keepAliveEnabled", keepAliveEnabled);
+    return options;
+  }
+
+  @Override
+  public Map<String, Object> getRealOptions(ChromeCustomTabsActivity chromeCustomTabsActivity) {
+    Map<String, Object> realOptions = toMap();
+    if (chromeCustomTabsActivity != null) {
+      Intent intent = chromeCustomTabsActivity.getIntent();
+      if (intent != null) {
+        realOptions.put("packageName", intent.getPackage());
+        realOptions.put("keepAliveEnabled", intent.hasExtra(CustomTabsHelper.EXTRA_CUSTOM_TABS_KEEP_ALIVE));
+      }
     }
+    return realOptions;
+  }
 }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/ChromeCustomTabs/CustomTabsHelper.java

@@ -18,12 +18,12 @@ import java.util.List;
  * Helper class for Custom Tabs.
  */
 public class CustomTabsHelper {
-    private static final String TAG = "CustomTabsHelper";
+    protected static final String TAG = "CustomTabsHelper";
     static final String STABLE_PACKAGE = "com.android.chrome";
     static final String BETA_PACKAGE = "com.chrome.beta";
     static final String DEV_PACKAGE = "com.chrome.dev";
     static final String LOCAL_PACKAGE = "com.google.android.apps.chrome";
-    private static final String EXTRA_CUSTOM_TABS_KEEP_ALIVE =
+    protected static final String EXTRA_CUSTOM_TABS_KEEP_ALIVE =
             "android.support.customtabs.extra.KEEP_ALIVE";
 
     private static String sPackageNameToUse;

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/ChromeSafariBrowserManager.java

@@ -72,14 +72,14 @@ public class ChromeSafariBrowserManager implements MethodChannel.MethodCallHandl
       intent = new Intent(activity, ChromeCustomTabsActivity.class);
     }
     // check for webview fallback
-    else if (!CustomTabActivityHelper.isAvailable(activity) && !uuidFallback.isEmpty()) {
+    else if (!CustomTabActivityHelper.isAvailable(activity) && uuidFallback != null) {
       Log.d(LOG_TAG, "WebView fallback declared.");
       // overwrite with extras fallback parameters
       extras.putString("uuid", uuidFallback);
       if (optionsFallback != null)
         extras.putSerializable("options", optionsFallback);
       else
-        extras.putSerializable("options", (new InAppBrowserOptions()).getHashMap());
+        extras.putSerializable("options", (Serializable) (new InAppBrowserOptions()).toMap());
       intent = new Intent(activity, InAppBrowserActivity.class);
     }
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppBrowser/InAppBrowserActivity.java

@@ -707,12 +707,12 @@ public class InAppBrowserActivity extends AppCompatActivity implements MethodCha
     options = newOptions;
   }
 
-  public HashMap<String, Object> getOptions() {
-    HashMap<String, Object> webViewOptionsMap = webView.getOptions();
+  public Map<String, Object> getOptions() {
+    Map<String, Object> webViewOptionsMap = webView.getOptions();
     if (options == null || webViewOptionsMap == null)
       return null;
 
-    HashMap<String, Object> optionsMap = options.getHashMap();
+    Map<String, Object> optionsMap = options.getRealOptions(this);
     optionsMap.putAll(webViewOptionsMap);
     return optionsMap;
   }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppBrowser/InAppBrowserOptions.java

@@ -5,7 +5,7 @@ import com.pichillilorenzo.flutter_inappwebview.Options;
 import java.util.HashMap;
 import java.util.Map;
 
-public class InAppBrowserOptions implements Options {
+public class InAppBrowserOptions implements Options<InAppBrowserActivity> {
 
   public static final String LOG_TAG = "InAppBrowserOptions";
 
@@ -20,7 +20,7 @@ public class InAppBrowserOptions implements Options {
   public Boolean progressBar = true;
 
   @Override
-  public InAppBrowserOptions parse(HashMap<String, Object> options) {
+  public InAppBrowserOptions parse(Map<String, Object> options) {
     for (Map.Entry<String, Object> pair : options.entrySet()) {
       String key = pair.getKey();
       Object value = pair.getValue();
@@ -60,8 +60,8 @@ public class InAppBrowserOptions implements Options {
   }
 
   @Override
-  public HashMap<String, Object> getHashMap() {
-    HashMap<String, Object> options = new HashMap<>();
+  public Map<String, Object> toMap() {
+    Map<String, Object> options = new HashMap<>();
     options.put("hidden", hidden);
     options.put("toolbarTop", toolbarTop);
     options.put("toolbarTopBackgroundColor", toolbarTopBackgroundColor);
@@ -72,4 +72,10 @@ public class InAppBrowserOptions implements Options {
     options.put("progressBar", progressBar);
     return options;
   }
+
+  @Override
+  public Map<String, Object> getRealOptions(InAppBrowserActivity inAppBrowserActivity) {
+    Map<String, Object> realOptions = toMap();
+    return realOptions;
+  }
 }

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

 package com.pichillilorenzo.flutter_inappwebview.InAppWebView;
 
 import android.content.Context;
-import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
@@ -73,6 +72,7 @@ final public class InAppWebView extends InputAwareWebView {
   public InAppWebViewClient inAppWebViewClient;
   public InAppWebViewChromeClient inAppWebViewChromeClient;
   public InAppWebViewRenderProcessClient inAppWebViewRenderProcessClient;
+  public JavaScriptBridgeInterface javaScriptBridgeInterface;
   public InAppWebViewOptions options;
   public boolean isLoading = false;
   public OkHttpClient httpClient;
@@ -632,7 +632,8 @@ final public class InAppWebView extends InputAwareWebView {
 
     httpClient = new OkHttpClient().newBuilder().build();
 
-    addJavascriptInterface(new JavaScriptBridgeInterface((isFromInAppBrowserActivity) ? inAppBrowserActivity : flutterWebView), JavaScriptBridgeInterface.name);
+    javaScriptBridgeInterface = new JavaScriptBridgeInterface((isFromInAppBrowserActivity) ? inAppBrowserActivity : flutterWebView);
+    addJavascriptInterface(javaScriptBridgeInterface, JavaScriptBridgeInterface.name);
 
     inAppWebViewChromeClient = new InAppWebViewChromeClient((isFromInAppBrowserActivity) ? inAppBrowserActivity : flutterWebView);
     setWebChromeClient(inAppWebViewChromeClient);
@@ -1373,8 +1374,8 @@ final public class InAppWebView extends InputAwareWebView {
     options = newOptions;
   }
 
-  public HashMap<String, Object> getOptions() {
-    return (options != null) ? options.getHashMap() : null;
+  public Map<String, Object> getOptions() {
+    return (options != null) ? options.getRealOptions(this) : null;
   }
 
   public void injectDeferredObject(String source, String jsWrapper, final MethodChannel.Result result) {

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppWebView/InAppWebViewOptions.java

@@ -5,18 +5,17 @@ import android.util.Log;
 import android.view.View;
 import android.webkit.WebSettings;
 
-import com.pichillilorenzo.flutter_inappwebview.ChromeCustomTabs.ChromeCustomTabsOptions;
 import com.pichillilorenzo.flutter_inappwebview.Options;
 
-import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import static android.webkit.WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
 import static android.webkit.WebSettings.LayoutAlgorithm.NORMAL;
 
-public class InAppWebViewOptions implements Options {
+public class InAppWebViewOptions implements Options<InAppWebView> {
 
   public static final String LOG_TAG = "InAppWebViewOptions";
 
@@ -99,7 +98,7 @@ public class InAppWebViewOptions implements Options {
   public Boolean useOnRenderProcessGone = false;
 
   @Override
-  public InAppWebViewOptions parse(HashMap<String, Object> options) {
+  public InAppWebViewOptions parse(Map<String, Object> options) {
     for (Map.Entry<String, Object> pair : options.entrySet()) {
       String key = pair.getKey();
       Object value = pair.getValue();
@@ -343,8 +342,8 @@ public class InAppWebViewOptions implements Options {
   }
 
   @Override
-  public HashMap<String, Object> getHashMap() {
-    HashMap<String, Object> options = new HashMap<>();
+  public Map<String, Object> toMap() {
+    Map<String, Object> options = new HashMap<>();
     options.put("useShouldOverrideUrlLoading", useShouldOverrideUrlLoading);
     options.put("useOnLoadResource", useOnLoadResource);
     options.put("useOnDownloadStart", useOnDownloadStart);
@@ -424,9 +423,83 @@ public class InAppWebViewOptions implements Options {
     return options;
   }
 
+  @Override
+  public Map<String, Object> getRealOptions(InAppWebView webView) {
+    Map<String, Object> realOptions = toMap();
+    if (webView != null) {
+      WebSettings settings = webView.getSettings();
+      realOptions.put("userAgent", settings.getUserAgentString());
+      realOptions.put("javaScriptEnabled", settings.getJavaScriptEnabled());
+      realOptions.put("javaScriptCanOpenWindowsAutomatically", settings.getJavaScriptCanOpenWindowsAutomatically());
+      realOptions.put("mediaPlaybackRequiresUserGesture", settings.getMediaPlaybackRequiresUserGesture());
+      realOptions.put("minimumFontSize", settings.getMinimumFontSize());
+      realOptions.put("verticalScrollBarEnabled", webView.isVerticalScrollBarEnabled());
+      realOptions.put("horizontalScrollBarEnabled", webView.isHorizontalScrollBarEnabled());
+      realOptions.put("textZoom", settings.getTextZoom());
+      realOptions.put("builtInZoomControls", settings.getBuiltInZoomControls());
+      realOptions.put("supportZoom", settings.supportZoom());
+      realOptions.put("displayZoomControls", settings.getDisplayZoomControls());
+      realOptions.put("databaseEnabled", settings.getDatabaseEnabled());
+      realOptions.put("domStorageEnabled", settings.getDomStorageEnabled());
+      realOptions.put("useWideViewPort", settings.getUseWideViewPort());
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        realOptions.put("safeBrowsingEnabled", settings.getSafeBrowsingEnabled());
+      }
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+        realOptions.put("mixedContentMode", settings.getMixedContentMode());
+      }
+      realOptions.put("allowContentAccess", settings.getAllowContentAccess());
+      realOptions.put("allowFileAccess", settings.getAllowFileAccess());
+      realOptions.put("allowFileAccessFromFileURLs", settings.getAllowFileAccessFromFileURLs());
+      realOptions.put("allowUniversalAccessFromFileURLs", settings.getAllowUniversalAccessFromFileURLs());
+      realOptions.put("blockNetworkImage", settings.getBlockNetworkImage());
+      realOptions.put("blockNetworkLoads", settings.getBlockNetworkLoads());
+      realOptions.put("cacheMode", settings.getCacheMode());
+      realOptions.put("cursiveFontFamily", settings.getCursiveFontFamily());
+      realOptions.put("defaultFixedFontSize", settings.getDefaultFixedFontSize());
+      realOptions.put("defaultFontSize", settings.getDefaultFontSize());
+      realOptions.put("defaultTextEncodingName", settings.getDefaultTextEncodingName());
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+        realOptions.put("disabledActionModeMenuItems", settings.getDisabledActionModeMenuItems());
+      }
+      realOptions.put("fantasyFontFamily", settings.getFantasyFontFamily());
+      realOptions.put("fixedFontFamily", settings.getFixedFontFamily());
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+        realOptions.put("forceDark", settings.getForceDark());
+      }
+      realOptions.put("layoutAlgorithm", settings.getLayoutAlgorithm().name());
+      realOptions.put("loadWithOverviewMode", settings.getLoadWithOverviewMode());
+      realOptions.put("loadsImagesAutomatically", settings.getLoadsImagesAutomatically());
+      realOptions.put("minimumLogicalFontSize", settings.getMinimumLogicalFontSize());
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+        realOptions.put("offscreenPreRaster", settings.getOffscreenPreRaster());
+      }
+      realOptions.put("sansSerifFontFamily", settings.getSansSerifFontFamily());
+      realOptions.put("serifFontFamily", settings.getSerifFontFamily());
+      realOptions.put("standardFontFamily", settings.getStandardFontFamily());
+      realOptions.put("saveFormData", settings.getSaveFormData());
+      realOptions.put("supportMultipleWindows", settings.supportMultipleWindows());
+      realOptions.put("overScrollMode", webView.getOverScrollMode());
+      realOptions.put("scrollBarStyle", webView.getScrollBarStyle());
+      realOptions.put("verticalScrollbarPosition", webView.getVerticalScrollbarPosition());
+      realOptions.put("scrollBarDefaultDelayBeforeFade", webView.getScrollBarDefaultDelayBeforeFade());
+      realOptions.put("scrollbarFadingEnabled", webView.isScrollbarFadingEnabled());
+      realOptions.put("scrollBarFadeDuration", webView.getScrollBarFadeDuration());
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        Map<String, Object> rendererPriorityPolicy = new HashMap<>();
+        rendererPriorityPolicy.put("rendererRequestedPriority", webView.getRendererRequestedPriority());
+        rendererPriorityPolicy.put("waivedWhenNotVisible", webView.getRendererPriorityWaivedWhenNotVisible());
+        realOptions.put("rendererPriorityPolicy", rendererPriorityPolicy);
+      }
+    }
+    return realOptions;
+  }
+
   private void setLayoutAlgorithm(String value) {
     if (value != null) {
       switch (value) {
+        case "NARROW_COLUMNS":
+          layoutAlgorithm = NARROW_COLUMNS;
         case "NORMAL":
           layoutAlgorithm = NORMAL;
         case "TEXT_AUTOSIZING":
@@ -451,6 +524,8 @@ public class InAppWebViewOptions implements Options {
           } else {
             return "NORMAL";
           }
+        case NARROW_COLUMNS:
+          return "NARROW_COLUMNS";
       }
     }
     return null;

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/Options.java

 package com.pichillilorenzo.flutter_inappwebview;
 
-import java.util.HashMap;
+import java.util.Map;
 
-public interface Options {
+public interface Options<T> {
   static String LOG_TAG = "Options";
-  public Options parse(HashMap<String, Object> options);
-  public HashMap<String, Object> getHashMap();
+  public Options parse(Map<String, Object> options);
+  public Map<String, Object> toMap();
+  public Map<String, Object> getRealOptions(T webView);
 }

example/.flutter-plugins-dependencies

-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"e2e","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/e2e-0.2.4+4/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.0+hotfix.6/","dependencies":[]}],"android":[{"name":"e2e","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/e2e-0.2.4+4/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.0+hotfix.6/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"e2e","dependencies":[]},{"name":"flutter_inappwebview","dependencies":[]},{"name":"permission_handler","dependencies":[]}],"date_created":"2020-05-29 10:25:22.515235","version":"1.17.1"}
\ No newline at end of file
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"e2e","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/e2e-0.2.4+4/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.0+hotfix.6/","dependencies":[]}],"android":[{"name":"e2e","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/e2e-0.2.4+4/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.0+hotfix.6/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"e2e","dependencies":[]},{"name":"flutter_inappwebview","dependencies":[]},{"name":"permission_handler","dependencies":[]}],"date_created":"2020-05-29 19:53:44.213613","version":"1.17.1"}
\ No newline at end of file

example/lib/chrome_safari_browser_example.screen.dart

@@ -4,7 +4,7 @@ import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 import 'main.dart';
 
 class MyChromeSafariBrowser extends ChromeSafariBrowser {
-  MyChromeSafariBrowser(browserFallback) : super(bFallback: browserFallback);
+  MyChromeSafariBrowser({browserFallback}) : super(bFallback: browserFallback);
 
   @override
   void onOpened() {
@@ -24,23 +24,23 @@ class MyChromeSafariBrowser extends ChromeSafariBrowser {
 
 class ChromeSafariBrowserExampleScreen extends StatefulWidget {
   final ChromeSafariBrowser browser =
-      new MyChromeSafariBrowser(new InAppBrowser());
+      MyChromeSafariBrowser(browserFallback: InAppBrowser());
 
   @override
   _ChromeSafariBrowserExampleScreenState createState() =>
-      new _ChromeSafariBrowserExampleScreenState();
+      _ChromeSafariBrowserExampleScreenState();
 }
 
 class _ChromeSafariBrowserExampleScreenState
     extends State<ChromeSafariBrowserExampleScreen> {
   @override
   void initState() {
-    widget.browser.addMenuItem(new ChromeSafariBrowserMenuItem(id: 1, label: 'Custom item menu 1', action: (url, title) {
+    widget.browser.addMenuItem(ChromeSafariBrowserMenuItem(id: 1, label: 'Custom item menu 1', action: (url, title) {
       print('Custom item menu 1 clicked!');
       print(url);
       print(title);
     }));
-    widget.browser.addMenuItem(new ChromeSafariBrowserMenuItem(id: 2, label: 'Custom item menu 2', action: (url, title) {
+    widget.browser.addMenuItem(ChromeSafariBrowserMenuItem(id: 2, label: 'Custom item menu 2', action: (url, title) {
       print('Custom item menu 2 clicked!');
       print(url);
       print(title);

ios/Classes/ChromeSafariBrowserManager.swift

@@ -39,10 +39,10 @@ public class ChromeSafariBrowserManager: NSObject, FlutterPlugin {
                 let url = arguments!["url"] as! String
                 let options = arguments!["options"] as! [String: Any?]
                 let menuItemList = arguments!["menuItemList"] as! [[String: Any]]
-                let uuidFallback: String = arguments!["uuidFallback"] as! String
-                let headersFallback = arguments!["headersFallback"] as! [String: String]
-                let optionsFallback = arguments!["optionsFallback"] as! [String: Any?]
-                let contextMenuFallback = arguments!["contextMenuFallback"] as! [String: Any]
+                let uuidFallback = arguments!["uuidFallback"] as? String
+                let headersFallback = arguments!["headersFallback"] as? [String: String]
+                let optionsFallback = arguments!["optionsFallback"] as? [String: Any?]
+                let contextMenuFallback = arguments!["contextMenuFallback"] as? [String: Any]
                 open(uuid: uuid, url: url, options: options,  menuItemList: menuItemList, uuidFallback: uuidFallback, headersFallback: headersFallback, optionsFallback: optionsFallback, contextMenuFallback: contextMenuFallback, result: result)
                 break
             default:
@@ -51,7 +51,7 @@ public class ChromeSafariBrowserManager: NSObject, FlutterPlugin {
         }
     }
     
-    public func open(uuid: String, url: String, options: [String: Any?], menuItemList: [[String: Any]], uuidFallback: String, headersFallback: [String: String], optionsFallback: [String: Any?], contextMenuFallback: [String: Any], result: @escaping FlutterResult) {
+    public func open(uuid: String, url: String, options: [String: Any?], menuItemList: [[String: Any]], uuidFallback: String?, headersFallback: [String: String]?, optionsFallback: [String: Any?]?, contextMenuFallback: [String: Any]?, result: @escaping FlutterResult) {
         let absoluteUrl = URL(string: url)!.absoluteURL
         
         if self.previousStatusBarStyle == -1 {
@@ -106,7 +106,7 @@ public class ChromeSafariBrowserManager: NSObject, FlutterPlugin {
                 
                 return
             }
-            SwiftFlutterPlugin.instance!.inAppBrowserManager!.openUrl(uuid: uuidFallback, url: url, options: optionsFallback, headers: headersFallback, contextMenu: contextMenuFallback)
+            SwiftFlutterPlugin.instance!.inAppBrowserManager!.openUrl(uuid: uuidFallback!, url: url, options: optionsFallback ?? [:], headers: headersFallback ?? [:], contextMenu: contextMenuFallback ?? [:])
         }
     }
 }

ios/Classes/InAppBrowserOptions.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 @objcMembers
-public class InAppBrowserOptions: Options {
+public class InAppBrowserOptions: Options<InAppBrowserWebViewController> {
     
     var hidden = false
     var toolbarTop = true
@@ -29,5 +29,12 @@ public class InAppBrowserOptions: Options {
         super.init()
     }
     
+    override func getRealOptions(obj: InAppBrowserWebViewController?) -> [String: Any?] {
+        var realOptions: [String: Any?] = toMap()
+        if let inAppBrowserWebViewController = obj {
+            realOptions["presentationStyle"] = inAppBrowserWebViewController.modalPresentationStyle.rawValue
+            realOptions["transitionStyle"] = inAppBrowserWebViewController.modalTransitionStyle.rawValue
+        }
+        return realOptions
+    }
 }
-

ios/Classes/InAppBrowserWebViewController.swift

@@ -688,11 +688,12 @@ public class InAppBrowserWebViewController: UIViewController, FlutterPlugin, UIS
     }
     
     public func getOptions() -> [String: Any?]? {
-        if (self.browserOptions == nil || self.webView.getOptions() == nil) {
+        let webViewOptionsMap = self.webView.getOptions()
+        if (self.browserOptions == nil || webViewOptionsMap == nil) {
             return nil
         }
-        var optionsMap = self.browserOptions!.getHashMap()
-        optionsMap.merge(self.webView.getOptions()!, uniquingKeysWith: { (current, _) in current })
+        var optionsMap = self.browserOptions!.getRealOptions(obj: self)
+        optionsMap.merge(webViewOptionsMap!, uniquingKeysWith: { (current, _) in current })
         return optionsMap
     }
     

ios/Classes/InAppWebView.swift

@@ -1056,6 +1056,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         allowsBackForwardNavigationGestures = (options?.allowsBackForwardNavigationGestures)!
         if #available(iOS 9.0, *) {
             allowsLinkPreview = (options?.allowsLinkPreview)!
+            configuration.allowsAirPlayForMediaPlayback = (options?.allowsAirPlayForMediaPlayback)!
             configuration.allowsPictureInPictureMediaPlayback = (options?.allowsPictureInPictureMediaPlayback)!
             if (options?.applicationNameForUserAgent != nil && (options?.applicationNameForUserAgent)! != "") {
                 configuration.applicationNameForUserAgent = (options?.applicationNameForUserAgent)!
@@ -1075,7 +1076,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             
             var dataDetectorTypes = WKDataDetectorTypes.init(rawValue: 0)
             for type in options?.dataDetectorTypes ?? [] {
-                let dataDetectorType = getDataDetectorType(type: type)
+                let dataDetectorType = InAppWebView.getDataDetectorType(type: type)
                 dataDetectorTypes = WKDataDetectorTypes(rawValue: dataDetectorTypes.rawValue | dataDetectorType.rawValue)
             }
             configuration.dataDetectorTypes = dataDetectorTypes
@@ -1094,7 +1095,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         scrollView.showsVerticalScrollIndicator = (options?.verticalScrollBarEnabled)!
         scrollView.showsHorizontalScrollIndicator = (options?.horizontalScrollBarEnabled)!
 
-        scrollView.decelerationRate = getDecelerationRate(type: (options?.decelerationRate)!)
+        scrollView.decelerationRate = InAppWebView.getDecelerationRate(type: (options?.decelerationRate)!)
         scrollView.alwaysBounceVertical = (options?.alwaysBounceVertical)!
         scrollView.alwaysBounceHorizontal = (options?.alwaysBounceHorizontal)!
         scrollView.scrollsToTop = (options?.scrollsToTop)!
@@ -1110,7 +1111,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
     }
     
     @available(iOS 10.0, *)
-    public func getDataDetectorType(type: String) -> WKDataDetectorTypes {
+    static public func getDataDetectorType(type: String) -> WKDataDetectorTypes {
         switch type {
             case "NONE":
                 return WKDataDetectorTypes.init(rawValue: 0)
@@ -1137,7 +1138,44 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         }
     }
     
-    public func getDecelerationRate(type: String) -> UIScrollView.DecelerationRate {
+    @available(iOS 10.0, *)
+    static public func getDataDetectorTypeString(type: WKDataDetectorTypes) -> [String] {
+        var dataDetectorTypeString: [String] = []
+        if type.contains(.all) {
+            dataDetectorTypeString.append("ALL")
+        } else {
+            if type.contains(.phoneNumber) {
+                dataDetectorTypeString.append("PHONE_NUMBER")
+            }
+            if type.contains(.link) {
+                dataDetectorTypeString.append("LINK")
+            }
+            if type.contains(.address) {
+                dataDetectorTypeString.append("ADDRESS")
+            }
+            if type.contains(.calendarEvent) {
+                dataDetectorTypeString.append("CALENDAR_EVENT")
+            }
+            if type.contains(.trackingNumber) {
+                dataDetectorTypeString.append("TRACKING_NUMBER")
+            }
+            if type.contains(.flightNumber) {
+                dataDetectorTypeString.append("FLIGHT_NUMBER")
+            }
+            if type.contains(.lookupSuggestion) {
+                dataDetectorTypeString.append("LOOKUP_SUGGESTION")
+            }
+            if type.contains(.spotlightSuggestion) {
+                dataDetectorTypeString.append("SPOTLIGHT_SUGGESTION")
+            }
+        }
+        if dataDetectorTypeString.count == 0 {
+            dataDetectorTypeString = ["NONE"]
+        }
+        return dataDetectorTypeString
+    }
+    
+    static public func getDecelerationRate(type: String) -> UIScrollView.DecelerationRate {
         switch type {
             case "NORMAL":
                 return .normal
@@ -1148,6 +1186,17 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         }
     }
     
+    static public func getDecelerationRateString(type: UIScrollView.DecelerationRate) -> String {
+        switch type {
+            case .normal:
+                return "NORMAL"
+            case .fast:
+                return "FAST"
+            default:
+                return "NORMAL"
+        }
+    }
+    
     public static func preWKWebViewConfiguration(options: InAppWebViewOptions?) -> WKWebViewConfiguration {
         let configuration = WKWebViewConfiguration()
         
@@ -1403,10 +1452,6 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             allowsBackForwardNavigationGestures = newOptions.allowsBackForwardNavigationGestures
         }
         
-        if newOptionsMap["allowsInlineMediaPlayback"] != nil && options?.allowsInlineMediaPlayback != newOptions.allowsInlineMediaPlayback {
-            configuration.allowsInlineMediaPlayback = newOptions.allowsInlineMediaPlayback
-        }
-        
         if newOptionsMap["javaScriptCanOpenWindowsAutomatically"] != nil && options?.javaScriptCanOpenWindowsAutomatically != newOptions.javaScriptCanOpenWindowsAutomatically {
             configuration.preferences.javaScriptCanOpenWindowsAutomatically = newOptions.javaScriptCanOpenWindowsAutomatically
         }
@@ -1431,7 +1476,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             if newOptionsMap["dataDetectorTypes"] != nil && options?.dataDetectorTypes != newOptions.dataDetectorTypes {
                 var dataDetectorTypes = WKDataDetectorTypes.init(rawValue: 0)
                 for type in newOptions.dataDetectorTypes {
-                    let dataDetectorType = getDataDetectorType(type: type)
+                    let dataDetectorType = InAppWebView.getDataDetectorType(type: type)
                     dataDetectorTypes = WKDataDetectorTypes(rawValue: dataDetectorTypes.rawValue | dataDetectorType.rawValue)
                 }
                 configuration.dataDetectorTypes = dataDetectorTypes
@@ -1465,7 +1510,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         }
         
         if newOptionsMap["decelerationRate"] != nil && options?.decelerationRate != newOptions.decelerationRate {
-            scrollView.decelerationRate = getDecelerationRate(type: newOptions.decelerationRate)
+            scrollView.decelerationRate = InAppWebView.getDecelerationRate(type: newOptions.decelerationRate)
         }
         if newOptionsMap["alwaysBounceVertical"] != nil && options?.alwaysBounceVertical != newOptions.alwaysBounceVertical {
             scrollView.alwaysBounceVertical = newOptions.alwaysBounceVertical
@@ -1490,6 +1535,9 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             if newOptionsMap["allowsLinkPreview"] != nil && options?.allowsLinkPreview != newOptions.allowsLinkPreview {
                 allowsLinkPreview = newOptions.allowsLinkPreview
             }
+            if newOptionsMap["allowsAirPlayForMediaPlayback"] != nil && options?.allowsAirPlayForMediaPlayback != newOptions.allowsAirPlayForMediaPlayback {
+                configuration.allowsAirPlayForMediaPlayback = newOptions.allowsAirPlayForMediaPlayback
+            }
             if newOptionsMap["allowsPictureInPictureMediaPlayback"] != nil && options?.allowsPictureInPictureMediaPlayback != newOptions.allowsPictureInPictureMediaPlayback {
                 configuration.allowsPictureInPictureMediaPlayback = newOptions.allowsPictureInPictureMediaPlayback
             }
@@ -1534,7 +1582,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         if (self.options == nil) {
             return nil
         }
-        return self.options!.getHashMap()
+        return self.options!.getRealOptions(obj: self)
     }
     
     public func clearCache() {

ios/Classes/InAppWebViewOptions.swift

@@ -9,7 +9,7 @@ import Foundation
 import WebKit
 
 @objcMembers
-public class InAppWebViewOptions: Options {
+public class InAppWebViewOptions: Options<InAppWebView> {
     
     var useShouldOverrideUrlLoading = false
     var useOnLoadResource = false
@@ -63,4 +63,47 @@ public class InAppWebViewOptions: Options {
         super.init()
     }
     
+    override func getRealOptions(obj: InAppWebView?) -> [String: Any?] {
+        var realOptions: [String: Any?] = toMap()
+        if let webView = obj {
+            let configuration = webView.configuration
+            if #available(iOS 9.0, *) {
+                realOptions["userAgent"] = webView.customUserAgent
+                realOptions["applicationNameForUserAgent"] = configuration.applicationNameForUserAgent
+                realOptions["allowsAirPlayForMediaPlayback"] = configuration.allowsAirPlayForMediaPlayback
+                realOptions["allowsLinkPreview"] = webView.allowsLinkPreview
+                realOptions["allowsPictureInPictureMediaPlayback"] = configuration.allowsPictureInPictureMediaPlayback
+            }
+            realOptions["javaScriptEnabled"] = configuration.preferences.javaScriptEnabled
+            realOptions["javaScriptCanOpenWindowsAutomatically"] = configuration.preferences.javaScriptCanOpenWindowsAutomatically
+            if #available(iOS 10.0, *) {
+                realOptions["mediaPlaybackRequiresUserGesture"] = configuration.mediaTypesRequiringUserActionForPlayback == .all
+                realOptions["ignoresViewportScaleLimits"] = configuration.ignoresViewportScaleLimits
+                realOptions["dataDetectorTypes"] = InAppWebView.getDataDetectorTypeString(type: configuration.dataDetectorTypes)
+            } else {
+                realOptions["mediaPlaybackRequiresUserGesture"] = configuration.mediaPlaybackRequiresUserAction
+            }
+            realOptions["minimumFontSize"] = configuration.preferences.minimumFontSize
+            realOptions["suppressesIncrementalRendering"] = configuration.suppressesIncrementalRendering
+            realOptions["allowsBackForwardNavigationGestures"] = webView.allowsBackForwardNavigationGestures
+            realOptions["allowsInlineMediaPlayback"] = configuration.allowsInlineMediaPlayback
+            if #available(iOS 13.0, *) {
+                realOptions["isFraudulentWebsiteWarningEnabled"] = configuration.preferences.isFraudulentWebsiteWarningEnabled
+                realOptions["preferredContentMode"] = configuration.defaultWebpagePreferences.preferredContentMode.rawValue
+                realOptions["automaticallyAdjustsScrollIndicatorInsets"] = webView.scrollView.automaticallyAdjustsScrollIndicatorInsets
+            }
+            realOptions["selectionGranularity"] = configuration.selectionGranularity.rawValue
+            if #available(iOS 11.0, *) {
+                realOptions["accessibilityIgnoresInvertColors"] = webView.accessibilityIgnoresInvertColors
+            }
+            realOptions["decelerationRate"] = InAppWebView.getDecelerationRateString(type: webView.scrollView.decelerationRate)
+            realOptions["alwaysBounceVertical"] = webView.scrollView.alwaysBounceVertical
+            realOptions["alwaysBounceHorizontal"] = webView.scrollView.alwaysBounceHorizontal
+            realOptions["scrollsToTop"] = webView.scrollView.scrollsToTop
+            realOptions["isPagingEnabled"] = webView.scrollView.isPagingEnabled
+            realOptions["maximumZoomScale"] = webView.scrollView.maximumZoomScale
+            realOptions["minimumZoomScale"] = webView.scrollView.minimumZoomScale
+        }
+        return realOptions
+    }
 }

ios/Classes/Options.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 @objcMembers
-public class Options: NSObject {
+public class Options<T>: NSObject {
     
     override init(){
         super.init()
@@ -23,7 +23,7 @@ public class Options: NSObject {
         return self
     }
     
-    func getHashMap() -> [String: Any?] {
+    func toMap() -> [String: Any?] {
         var options: [String: Any?] = [:]
         var counts = UInt32();
         let properties = class_copyPropertyList(object_getClass(self), &counts);
@@ -38,4 +38,9 @@ public class Options: NSObject {
         free(properties)
         return options
     }
+    
+    func getRealOptions(obj: T?) -> [String: Any?] {
+        let realOptions: [String: Any?] = toMap()
+        return realOptions
+    }
 }

ios/Classes/SafariBrowserOptions.swift

@@ -7,8 +7,9 @@
 
 import Foundation
 
+@available(iOS 9.0, *)
 @objcMembers
-public class SafariBrowserOptions: Options {
+public class SafariBrowserOptions: Options<SafariViewController> {
     
     var entersReaderIfAvailable = false
     var barCollapsingEnabled = false
@@ -22,4 +23,17 @@ public class SafariBrowserOptions: Options {
         super.init()
     }
     
+    override func getRealOptions(obj: SafariViewController?) -> [String: Any?] {
+        var realOptions: [String: Any?] = toMap()
+        if let safariViewController = obj {
+            if #available(iOS 11.0, *) {
+                realOptions["entersReaderIfAvailable"] = safariViewController.configuration.entersReaderIfAvailable
+                realOptions["barCollapsingEnabled"] = safariViewController.configuration.barCollapsingEnabled
+                realOptions["dismissButtonStyle"] = safariViewController.dismissButtonStyle.rawValue
+            }
+            realOptions["presentationStyle"] = safariViewController.modalPresentationStyle.rawValue
+            realOptions["transitionStyle"] = safariViewController.modalTransitionStyle.rawValue
+        }
+        return realOptions
+    }
 }

lib/src/chrome_safari_browser.dart

@@ -17,7 +17,8 @@ class ChromeSafariBrowser {
   Map<int, ChromeSafariBrowserMenuItem> _menuItems = new HashMap();
   bool _isOpened = false;
   MethodChannel _channel;
-  static const MethodChannel _sharedChannel = const MethodChannel('com.pichillilorenzo/flutter_chromesafaribrowser');
+  static const MethodChannel _sharedChannel =
+      const MethodChannel('com.pichillilorenzo/flutter_chromesafaribrowser');
 
   ///Initialize the [ChromeSafariBrowser] instance with an [InAppBrowser] fallback instance or `null`.
   ChromeSafariBrowser({bFallback}) {
@@ -73,10 +74,7 @@ class ChromeSafariBrowser {
 
     List<Map<String, dynamic>> menuItemList = new List();
     _menuItems.forEach((key, value) {
-      menuItemList.add({
-        "id": value.id,
-        "label": value.label
-      });
+      menuItemList.add({"id": value.id, "label": value.label});
     });
 
     Map<String, dynamic> args = <String, dynamic>{};
@@ -84,11 +82,11 @@ class ChromeSafariBrowser {
     args.putIfAbsent('url', () => url);
     args.putIfAbsent('options', () => options?.toMap() ?? {});
     args.putIfAbsent('menuItemList', () => menuItemList);
-    args.putIfAbsent('uuidFallback',
-            () => (browserFallback != null) ? browserFallback.uuid : '');
-    args.putIfAbsent('headersFallback', () => headersFallback);
+    args.putIfAbsent('uuidFallback', () => browserFallback?.uuid);
+    args.putIfAbsent('headersFallback', () => headersFallback ?? {});
     args.putIfAbsent('optionsFallback', () => optionsFallback?.toMap() ?? {});
-    args.putIfAbsent('contextMenuFallback', () => browserFallback?.contextMenu?.toMap() ?? {});
+    args.putIfAbsent('contextMenuFallback',
+        () => browserFallback?.contextMenu?.toMap() ?? {});
     await _sharedChannel.invokeMethod('open', args);
     this._isOpened = true;
   }
@@ -142,10 +140,30 @@ class ChromeSafariBrowser {
   }
 }
 
+///Class that represents a custom menu item for a [ChromeSafariBrowser] instance.
 class ChromeSafariBrowserMenuItem {
+  ///The menu item id
   int id;
+
+  ///The label of the menu item
   String label;
+
+  ///Callback function to be invoked when the menu item is clicked
   final void Function(String url, String title) action;
 
-  ChromeSafariBrowserMenuItem({@required this.id, @required this.label, @required this.action});
-}
\ No newline at end of file
+  ChromeSafariBrowserMenuItem(
+      {@required this.id, @required this.label, @required this.action});
+
+  Map<String, dynamic> toMap() {
+    return {"id": id, "label": label};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+}

lib/src/context_menu.dart

@@ -7,11 +7,11 @@ import 'types.dart';
 ///
 ///**NOTE**: To make it work properly on Android, JavaScript should be enabled!
 class ContextMenu {
-
   ///Event fired when the context menu for this WebView is being built.
   ///
   ///[hitTestResult] represents the hit result for hitting an HTML elements.
-  final void Function(InAppWebViewHitTestResult hitTestResult) onCreateContextMenu;
+  final void Function(InAppWebViewHitTestResult hitTestResult)
+      onCreateContextMenu;
 
   ///Event fired when the context menu for this WebView is being hidden.
   final void Function() onHideContextMenu;
@@ -19,17 +19,17 @@ class ContextMenu {
   ///Event fired when a context menu item has been clicked.
   ///
   ///[contextMenuItemClicked] represents the [ContextMenuItem] clicked.
-  final void Function(ContextMenuItem contextMenuItemClicked) onContextMenuActionItemClicked;
+  final void Function(ContextMenuItem contextMenuItemClicked)
+      onContextMenuActionItemClicked;
 
   ///List of the custom [ContextMenuItem].
   List<ContextMenuItem> menuItems = List();
 
-  ContextMenu({
-    this.menuItems,
-    this.onCreateContextMenu,
-    this.onHideContextMenu,
-    this.onContextMenuActionItemClicked
-  });
+  ContextMenu(
+      {this.menuItems,
+      this.onCreateContextMenu,
+      this.onHideContextMenu,
+      this.onContextMenuActionItemClicked});
 
   Map<String, dynamic> toMap() {
     return {
@@ -46,21 +46,24 @@ class ContextMenu {
 class ContextMenuItem {
   ///Android menu item ID.
   int androidId;
+
   ///iOS menu item ID.
   String iosId;
+
   ///Menu item title.
   String title;
+
   ///Menu item action that will be called when an user clicks on it.
   Function() action;
 
-  ContextMenuItem({@required this.androidId, @required this.iosId, @required this.title, this.action});
+  ContextMenuItem(
+      {@required this.androidId,
+      @required this.iosId,
+      @required this.title,
+      this.action});
 
   Map<String, dynamic> toMap() {
-    return {
-      "androidId": androidId,
-      "iosId": iosId,
-      "title": title
-    };
+    return {"androidId": androidId, "iosId": iosId, "title": title};
   }
 
   Map<String, dynamic> toJson() {

lib/src/cookie_manager.dart

@@ -22,7 +22,7 @@ class CookieManager {
 
   static CookieManager _init() {
     _channel.setMethodCallHandler(_handleMethod);
-    _instance = new CookieManager();
+    _instance = CookieManager();
     return _instance;
   }
 

lib/src/headless_in_app_webview.dart

@@ -12,61 +12,61 @@ import 'in_app_webview_controller.dart';
 class HeadlessInAppWebView implements WebView {
   String uuid;
   bool _isDisposed = true;
-  static const MethodChannel _sharedChannel = const MethodChannel('com.pichillilorenzo/flutter_headless_inappwebview');
+  static const MethodChannel _sharedChannel =
+      const MethodChannel('com.pichillilorenzo/flutter_headless_inappwebview');
 
   ///WebView Controller that can be used to access the [InAppWebViewController] API.
   InAppWebViewController webViewController;
 
-  HeadlessInAppWebView({
-    this.onWebViewCreated,
-    this.onLoadStart,
-    this.onLoadStop,
-    this.onLoadError,
-    this.onLoadHttpError,
-    this.onProgressChanged,
-    this.onConsoleMessage,
-    this.shouldOverrideUrlLoading,
-    this.onLoadResource,
-    this.onScrollChanged,
-    this.onDownloadStart,
-    this.onLoadResourceCustomScheme,
-    this.onCreateWindow,
-    this.onJsAlert,
-    this.onJsConfirm,
-    this.onJsPrompt,
-    this.onReceivedHttpAuthRequest,
-    this.onReceivedServerTrustAuthRequest,
-    this.onReceivedClientCertRequest,
-    this.onFindResultReceived,
-    this.shouldInterceptAjaxRequest,
-    this.onAjaxReadyStateChange,
-    this.onAjaxProgress,
-    this.shouldInterceptFetchRequest,
-    this.onUpdateVisitedHistory,
-    this.onPrint,
-    this.onLongPressHitTestResult,
-    this.onEnterFullscreen,
-    this.onExitFullscreen,
-    this.onPageCommitVisible,
-    this.androidOnSafeBrowsingHit,
-    this.androidOnPermissionRequest,
-    this.androidOnGeolocationPermissionsShowPrompt,
-    this.androidOnGeolocationPermissionsHidePrompt,
-    this.androidShouldInterceptRequest,
-    this.androidOnRenderProcessGone,
-    this.androidOnRenderProcessResponsive,
-    this.androidOnRenderProcessUnresponsive,
-    this.androidOnFormResubmission,
-    this.androidOnScaleChanged,
-    this.iosOnWebContentProcessDidTerminate,
-    this.iosOnDidReceiveServerRedirectForProvisionalNavigation,
-    this.initialUrl,
-    this.initialFile,
-    this.initialData,
-    this.initialHeaders,
-    this.initialOptions,
-    this.contextMenu
-  }) {
+  HeadlessInAppWebView(
+      {this.onWebViewCreated,
+      this.onLoadStart,
+      this.onLoadStop,
+      this.onLoadError,
+      this.onLoadHttpError,
+      this.onProgressChanged,
+      this.onConsoleMessage,
+      this.shouldOverrideUrlLoading,
+      this.onLoadResource,
+      this.onScrollChanged,
+      this.onDownloadStart,
+      this.onLoadResourceCustomScheme,
+      this.onCreateWindow,
+      this.onJsAlert,
+      this.onJsConfirm,
+      this.onJsPrompt,
+      this.onReceivedHttpAuthRequest,
+      this.onReceivedServerTrustAuthRequest,
+      this.onReceivedClientCertRequest,
+      this.onFindResultReceived,
+      this.shouldInterceptAjaxRequest,
+      this.onAjaxReadyStateChange,
+      this.onAjaxProgress,
+      this.shouldInterceptFetchRequest,
+      this.onUpdateVisitedHistory,
+      this.onPrint,
+      this.onLongPressHitTestResult,
+      this.onEnterFullscreen,
+      this.onExitFullscreen,
+      this.onPageCommitVisible,
+      this.androidOnSafeBrowsingHit,
+      this.androidOnPermissionRequest,
+      this.androidOnGeolocationPermissionsShowPrompt,
+      this.androidOnGeolocationPermissionsHidePrompt,
+      this.androidShouldInterceptRequest,
+      this.androidOnRenderProcessGone,
+      this.androidOnRenderProcessResponsive,
+      this.androidOnRenderProcessUnresponsive,
+      this.androidOnFormResubmission,
+      this.androidOnScaleChanged,
+      this.iosOnWebContentProcessDidTerminate,
+      this.iosOnDidReceiveServerRedirectForProvisionalNavigation,
+      this.initialUrl,
+      this.initialFile,
+      this.initialData,
+      this.initialHeaders,
+      this.initialOptions,
+      this.contextMenu}) {
     uuid = uuidGenerator.v4();
     webViewController = new InAppWebViewController(uuid, this);
   }
@@ -89,14 +89,16 @@ class HeadlessInAppWebView implements WebView {
     _isDisposed = false;
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('uuid', () => uuid);
-    args.putIfAbsent('params', () => <String, dynamic>{
-      'initialUrl': '${Uri.parse(this.initialUrl)}',
-      'initialFile': this.initialFile,
-      'initialData': this.initialData?.toMap(),
-      'initialHeaders': this.initialHeaders,
-      'initialOptions': this.initialOptions?.toMap() ?? {},
-      'contextMenu': this.contextMenu?.toMap() ?? {}
-    });
+    args.putIfAbsent(
+        'params',
+        () => <String, dynamic>{
+              'initialUrl': '${Uri.parse(this.initialUrl)}',
+              'initialFile': this.initialFile,
+              'initialData': this.initialData?.toMap(),
+              'initialHeaders': this.initialHeaders,
+              'initialOptions': this.initialOptions?.toMap() ?? {},
+              'contextMenu': this.contextMenu?.toMap() ?? {}
+            });
     await _sharedChannel.invokeMethod('createHeadlessWebView', args);
   }
 
@@ -113,12 +115,12 @@ class HeadlessInAppWebView implements WebView {
 
   @override
   final Future<void> Function(InAppWebViewController controller)
-  androidOnGeolocationPermissionsHidePrompt;
+      androidOnGeolocationPermissionsHidePrompt;
 
   @override
   final Future<GeolocationPermissionShowPromptResponse> Function(
-      InAppWebViewController controller, String origin)
-  androidOnGeolocationPermissionsShowPrompt;
+          InAppWebViewController controller, String origin)
+      androidOnGeolocationPermissionsShowPrompt;
 
   @override
   final Future<PermissionRequestResponse> Function(
@@ -149,30 +151,31 @@ class HeadlessInAppWebView implements WebView {
   final String initialUrl;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, String url) onPageCommitVisible;
+  final Future<void> Function(InAppWebViewController controller, String url)
+      onPageCommitVisible;
 
   @override
   final Future<void> Function(InAppWebViewController controller)
-  iosOnDidReceiveServerRedirectForProvisionalNavigation;
+      iosOnDidReceiveServerRedirectForProvisionalNavigation;
 
   @override
   final Future<void> Function(InAppWebViewController controller)
-  iosOnWebContentProcessDidTerminate;
+      iosOnWebContentProcessDidTerminate;
 
   @override
   final Future<AjaxRequestAction> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  onAjaxProgress;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      onAjaxProgress;
 
   @override
   final Future<AjaxRequestAction> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  onAjaxReadyStateChange;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      onAjaxReadyStateChange;
 
   @override
   final void Function(
-      InAppWebViewController controller, ConsoleMessage consoleMessage)
-  onConsoleMessage;
+          InAppWebViewController controller, ConsoleMessage consoleMessage)
+      onConsoleMessage;
 
   @override
   final void Function(InAppWebViewController controller,
@@ -180,7 +183,7 @@ class HeadlessInAppWebView implements WebView {
 
   @override
   final void Function(InAppWebViewController controller, String url)
-  onDownloadStart;
+      onDownloadStart;
 
   @override
   final void Function(InAppWebViewController controller, int activeMatchOrdinal,
@@ -208,17 +211,17 @@ class HeadlessInAppWebView implements WebView {
 
   @override
   final void Function(
-      InAppWebViewController controller, LoadedResource resource)
-  onLoadResource;
+          InAppWebViewController controller, LoadedResource resource)
+      onLoadResource;
 
   @override
   final Future<CustomSchemeResponse> Function(
-      InAppWebViewController controller, String scheme, String url)
-  onLoadResourceCustomScheme;
+          InAppWebViewController controller, String scheme, String url)
+      onLoadResourceCustomScheme;
 
   @override
   final void Function(InAppWebViewController controller, String url)
-  onLoadStart;
+      onLoadStart;
 
   @override
   final void Function(InAppWebViewController controller, String url) onLoadStop;
@@ -232,50 +235,50 @@ class HeadlessInAppWebView implements WebView {
 
   @override
   final void Function(InAppWebViewController controller, int progress)
-  onProgressChanged;
+      onProgressChanged;
 
   @override
   final Future<ClientCertResponse> Function(
-      InAppWebViewController controller, ClientCertChallenge challenge)
-  onReceivedClientCertRequest;
+          InAppWebViewController controller, ClientCertChallenge challenge)
+      onReceivedClientCertRequest;
 
   @override
   final Future<HttpAuthResponse> Function(
-      InAppWebViewController controller, HttpAuthChallenge challenge)
-  onReceivedHttpAuthRequest;
+          InAppWebViewController controller, HttpAuthChallenge challenge)
+      onReceivedHttpAuthRequest;
 
   @override
   final Future<ServerTrustAuthResponse> Function(
-      InAppWebViewController controller, ServerTrustChallenge challenge)
-  onReceivedServerTrustAuthRequest;
+          InAppWebViewController controller, ServerTrustChallenge challenge)
+      onReceivedServerTrustAuthRequest;
 
   @override
   final void Function(InAppWebViewController controller, int x, int y)
-  onScrollChanged;
+      onScrollChanged;
 
   @override
   final void Function(
-      InAppWebViewController controller, String url, bool androidIsReload)
-  onUpdateVisitedHistory;
+          InAppWebViewController controller, String url, bool androidIsReload)
+      onUpdateVisitedHistory;
 
   @override
   final void Function(InAppWebViewController controller) onWebViewCreated;
 
   @override
   final Future<AjaxRequest> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  shouldInterceptAjaxRequest;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      shouldInterceptAjaxRequest;
 
   @override
   final Future<FetchRequest> Function(
-      InAppWebViewController controller, FetchRequest fetchRequest)
-  shouldInterceptFetchRequest;
+          InAppWebViewController controller, FetchRequest fetchRequest)
+      shouldInterceptFetchRequest;
 
   @override
   final Future<ShouldOverrideUrlLoadingAction> Function(
-      InAppWebViewController controller,
-      ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest)
-  shouldOverrideUrlLoading;
+          InAppWebViewController controller,
+          ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest)
+      shouldOverrideUrlLoading;
 
   @override
   final void Function(InAppWebViewController controller) onEnterFullscreen;
@@ -284,26 +287,31 @@ class HeadlessInAppWebView implements WebView {
   final void Function(InAppWebViewController controller) onExitFullscreen;
 
   @override
-  final Future<WebResourceResponse> Function(InAppWebViewController controller, WebResourceRequest request)
-  androidShouldInterceptRequest;
+  final Future<WebResourceResponse> Function(
+          InAppWebViewController controller, WebResourceRequest request)
+      androidShouldInterceptRequest;
 
   @override
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessUnresponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessUnresponsive;
 
   @override
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessResponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessResponsive;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, RenderProcessGoneDetail detail)
-  androidOnRenderProcessGone;
+  final Future<void> Function(
+          InAppWebViewController controller, RenderProcessGoneDetail detail)
+      androidOnRenderProcessGone;
 
   @override
-  final Future<FormResubmissionAction> Function(InAppWebViewController controller, String url)
-  androidOnFormResubmission;
+  final Future<FormResubmissionAction> Function(
+      InAppWebViewController controller, String url) androidOnFormResubmission;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, double oldScale, double newScale)
-  androidOnScaleChanged;
-}
\ No newline at end of file
+  final Future<void> Function(
+          InAppWebViewController controller, double oldScale, double newScale)
+      androidOnScaleChanged;
+}

lib/src/http_auth_credentials_database.dart

@@ -22,7 +22,7 @@ class HttpAuthCredentialDatabase {
 
   static HttpAuthCredentialDatabase _init() {
     _channel.setMethodCallHandler(_handleMethod);
-    _instance = new HttpAuthCredentialDatabase();
+    _instance = HttpAuthCredentialDatabase();
     return _instance;
   }
 

lib/src/in_app_browser.dart

@@ -23,7 +23,8 @@ class InAppBrowser {
       HashMap<String, JavaScriptHandlerCallback>();
   bool _isOpened = false;
   MethodChannel _channel;
-  static const MethodChannel _sharedChannel = const MethodChannel('com.pichillilorenzo/flutter_inappbrowser');
+  static const MethodChannel _sharedChannel =
+      const MethodChannel('com.pichillilorenzo/flutter_inappbrowser');
 
   /// WebView Controller that can be used to access the [InAppWebViewController] API.
   InAppWebViewController webViewController;
@@ -35,8 +36,8 @@ class InAppBrowser {
         MethodChannel('com.pichillilorenzo/flutter_inappbrowser_$uuid');
     this._channel.setMethodCallHandler(handleMethod);
     _isOpened = false;
-    webViewController = new InAppWebViewController.fromInAppBrowser(
-        uuid, this._channel, this);
+    webViewController =
+        new InAppWebViewController.fromInAppBrowser(uuid, this._channel, this);
   }
 
   Future<dynamic> handleMethod(MethodCall call) async {
@@ -117,8 +118,6 @@ class InAppBrowser {
     assert(assetFilePath != null && assetFilePath.isNotEmpty);
     this.throwIsAlreadyOpened(message: 'Cannot open $assetFilePath!');
 
-
-
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('uuid', () => uuid);
     args.putIfAbsent('url', () => assetFilePath);
@@ -217,20 +216,19 @@ class InAppBrowser {
       options = options.cast<String, dynamic>();
       inAppBrowserClassOptions.crossPlatform =
           InAppBrowserOptions.fromMap(options);
-      inAppBrowserClassOptions.inAppWebViewGroupOptions = InAppWebViewGroupOptions();
+      inAppBrowserClassOptions.inAppWebViewGroupOptions =
+          InAppWebViewGroupOptions();
       inAppBrowserClassOptions.inAppWebViewGroupOptions.crossPlatform =
           InAppWebViewOptions.fromMap(options);
       if (Platform.isAndroid) {
         inAppBrowserClassOptions.android =
             AndroidInAppBrowserOptions.fromMap(options);
-        inAppBrowserClassOptions
-                .inAppWebViewGroupOptions.android =
+        inAppBrowserClassOptions.inAppWebViewGroupOptions.android =
             AndroidInAppWebViewOptions.fromMap(options);
       } else if (Platform.isIOS) {
-        inAppBrowserClassOptions.ios =
-            IOSInAppBrowserOptions.fromMap(options);
-        inAppBrowserClassOptions.inAppWebViewGroupOptions
-            .ios = IOSInAppWebViewOptions.fromMap(options);
+        inAppBrowserClassOptions.ios = IOSInAppBrowserOptions.fromMap(options);
+        inAppBrowserClassOptions.inAppWebViewGroupOptions.ios =
+            IOSInAppWebViewOptions.fromMap(options);
       }
     }
 
@@ -305,7 +303,8 @@ class InAppBrowser {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#shouldOverrideUrlLoading(android.webkit.WebView,%20java.lang.String)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455641-webview
   // ignore: missing_return
-  Future<ShouldOverrideUrlLoadingAction> shouldOverrideUrlLoading(ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest) {}
+  Future<ShouldOverrideUrlLoadingAction> shouldOverrideUrlLoading(
+      ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest) {}
 
   ///Event fired when the [InAppBrowser] webview loads a resource.
   ///
@@ -555,8 +554,8 @@ class InAppBrowser {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebChromeClient#onGeolocationPermissionsShowPrompt(java.lang.String,%20android.webkit.GeolocationPermissions.Callback)
   Future<GeolocationPermissionShowPromptResponse>
-  // ignore: missing_return
-  androidOnGeolocationPermissionsShowPrompt(String origin) {}
+      // ignore: missing_return
+      androidOnGeolocationPermissionsShowPrompt(String origin) {}
 
   ///Notify the host application that a request for Geolocation permissions, made with a previous call to [androidOnGeolocationPermissionsShowPrompt] has been canceled.
   ///Any related UI should therefore be hidden.
@@ -584,8 +583,8 @@ class InAppBrowser {
   ///- https://developer.android.com/reference/android/webkit/WebViewClient#shouldInterceptRequest(android.webkit.WebView,%20android.webkit.WebResourceRequest)
   ///- https://developer.android.com/reference/android/webkit/WebViewClient#shouldInterceptRequest(android.webkit.WebView,%20java.lang.String)
   Future<WebResourceResponse>
-  // ignore: missing_return
-  androidShouldInterceptRequest(WebResourceRequest request) {}
+      // ignore: missing_return
+      androidShouldInterceptRequest(WebResourceRequest request) {}
 
   ///Event called when the renderer currently associated with the WebView becomes unresponsive as a result of a long running blocking task such as the execution of JavaScript.
   ///
@@ -606,8 +605,8 @@ class InAppBrowser {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewRenderProcessClient#onRenderProcessUnresponsive(android.webkit.WebView,%20android.webkit.WebViewRenderProcess)
   Future<WebViewRenderProcessAction>
-  // ignore: missing_return
-  androidOnRenderProcessUnresponsive(String url) {}
+      // ignore: missing_return
+      androidOnRenderProcessUnresponsive(String url) {}
 
   ///Event called once when an unresponsive renderer currently associated with the WebView becomes responsive.
   ///
@@ -621,8 +620,8 @@ class InAppBrowser {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewRenderProcessClient#onRenderProcessResponsive(android.webkit.WebView,%20android.webkit.WebViewRenderProcess)
   Future<WebViewRenderProcessAction>
-  // ignore: missing_return
-  androidOnRenderProcessResponsive(String url) {}
+      // ignore: missing_return
+      androidOnRenderProcessResponsive(String url) {}
 
   ///Event fired when the given WebView's render process has exited.
   ///The application's implementation of this callback should only attempt to clean up the WebView.
@@ -641,8 +640,8 @@ class InAppBrowser {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onFormResubmission(android.webkit.WebView,%20android.os.Message,%20android.os.Message)
   Future<FormResubmissionAction>
-  // ignore: missing_return
-  androidOnFormResubmission(String url) {}
+      // ignore: missing_return
+      androidOnFormResubmission(String url) {}
 
   ///Event fired when the scale applied to the WebView has changed.
   ///

lib/src/in_app_localhost_server.dart

@@ -29,7 +29,7 @@ class InAppLocalhostServer {
       throw Exception('Server already started on http://localhost:$_port');
     }
 
-    var completer = new Completer();
+    var completer = Completer();
 
     runZoned(() {
       HttpServer.bind('127.0.0.1', _port).then((server) {
@@ -62,7 +62,7 @@ class InAppLocalhostServer {
           }
 
           request.response.headers.contentType =
-              new ContentType(contentType[0], contentType[1], charset: 'utf-8');
+              ContentType(contentType[0], contentType[1], charset: 'utf-8');
           request.response.add(body);
           request.response.close();
         });

lib/src/in_app_webview.dart

@@ -116,7 +116,8 @@ class InAppWebView extends StatefulWidget implements WebView {
   final ContextMenu contextMenu;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, String url) onPageCommitVisible;
+  final Future<void> Function(InAppWebViewController controller, String url)
+      onPageCommitVisible;
 
   @override
   final Future<void> Function(InAppWebViewController controller)
@@ -251,28 +252,33 @@ class InAppWebView extends StatefulWidget implements WebView {
   final void Function(InAppWebViewController controller) onExitFullscreen;
 
   @override
-  final Future<WebResourceResponse> Function(InAppWebViewController controller, WebResourceRequest request)
-  androidShouldInterceptRequest;
+  final Future<WebResourceResponse> Function(
+          InAppWebViewController controller, WebResourceRequest request)
+      androidShouldInterceptRequest;
 
   @override
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessUnresponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessUnresponsive;
 
   @override
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessResponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessResponsive;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, RenderProcessGoneDetail detail)
-  androidOnRenderProcessGone;
+  final Future<void> Function(
+          InAppWebViewController controller, RenderProcessGoneDetail detail)
+      androidOnRenderProcessGone;
 
   @override
-  final Future<FormResubmissionAction> Function(InAppWebViewController controller, String url)
-  androidOnFormResubmission;
+  final Future<FormResubmissionAction> Function(
+      InAppWebViewController controller, String url) androidOnFormResubmission;
 
   @override
-  final Future<void> Function(InAppWebViewController controller, double oldScale, double newScale)
-  androidOnScaleChanged;
+  final Future<void> Function(
+          InAppWebViewController controller, double oldScale, double newScale)
+      androidOnScaleChanged;
 }
 
 class _InAppWebViewState extends State<InAppWebView> {

lib/src/in_app_webview_controller.dart

@@ -1590,7 +1590,8 @@ class AndroidInAppWebViewController {
   ///If `true`, [basename] is assumed to be a directory in which a filename will be chosen according to the URL of the current page.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebView#saveWebArchive(java.lang.String,%20boolean,%20android.webkit.ValueCallback%3Cjava.lang.String%3E)
-  Future<String> saveWebArchive({@required String basename, @required bool autoname}) async {
+  Future<String> saveWebArchive(
+      {@required String basename, @required bool autoname}) async {
     assert(basename != null && autoname != null);
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent("basename", () => basename);
@@ -1681,7 +1682,10 @@ class AndroidInAppWebViewController {
   ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewCompat#getCurrentWebViewPackage(android.content.Context)
   static Future<AndroidWebViewPackageInfo> getCurrentWebViewPackage() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    Map<String, dynamic> packageInfo = (await InAppWebViewController._staticChannel.invokeMethod('getCurrentWebViewPackage', args))?.cast<String, dynamic>();
+    Map<String, dynamic> packageInfo = (await InAppWebViewController
+            ._staticChannel
+            .invokeMethod('getCurrentWebViewPackage', args))
+        ?.cast<String, dynamic>();
     return AndroidWebViewPackageInfo.fromMap(packageInfo);
   }
 }

lib/src/types.dart

@@ -87,6 +87,24 @@ class LoadedResource {
   double duration;
 
   LoadedResource({this.initiatorType, this.url, this.startTime, this.duration});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "initiatorType": initiatorType,
+      "url": url,
+      "startTime": startTime,
+      "duration": duration
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Initial [data] as a content for an [WebView] instance, using [baseUrl] as the base URL for it.
@@ -122,6 +140,15 @@ class InAppWebViewInitialData {
       "historyUrl": historyUrl
     };
   }
+
+  Map<String, String> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class representing a resource request of the WebView used by the event [WebView.androidShouldInterceptRequest].
@@ -131,14 +158,17 @@ class InAppWebViewInitialData {
 class WebResourceRequest {
   ///The URL for which the resource request was made.
   String url;
+
   ///The headers associated with the request.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it will be always `null`.
   Map<String, String> headers;
+
   ///The method associated with the request, for example `GET`.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it will be always "GET".
   String method;
+
   ///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
@@ -146,23 +176,44 @@ class WebResourceRequest {
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it will be always `false`.
   bool hasGesture;
+
   ///Whether the request was made in order to fetch the main frame's document.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it will be always `true`.
   bool isForMainFrame;
+
   ///Whether the request was a result of a server-side redirect.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it will be always `false`.
   bool isRedirect;
 
-  WebResourceRequest({
-    @required this.url,
-    this.headers,
-    this.method,
-    this.hasGesture,
-    this.isForMainFrame,
-    this.isRedirect
-  });
+  WebResourceRequest(
+      {@required this.url,
+      this.headers,
+      this.method,
+      this.hasGesture,
+      this.isForMainFrame,
+      this.isRedirect});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "url": url,
+      "headers": headers,
+      "method": method,
+      "hasGesture": hasGesture,
+      "isForMainFrame": isForMainFrame,
+      "isRedirect": isRedirect
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class representing a resource response of the WebView used by the event [WebView.androidShouldInterceptRequest].
@@ -172,33 +223,37 @@ class WebResourceRequest {
 class WebResourceResponse {
   ///The resource response's MIME type, for example `text/html`.
   String contentType;
+
   ///The resource response's encoding. The default value is `utf-8`.
   String contentEncoding;
+
   ///The data provided by the resource response.
   Uint8List data;
+
   ///The headers for the resource response. If [headers] isn't `null`, then you need to set also [statusCode] and [reasonPhrase].
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it won't be used.
   Map<String, String> headers;
+
   ///The status code needs to be in the ranges [100, 299], [400, 599]. Causing a redirect by specifying a 3xx code is not supported.
   ///If statusCode is set, then you need to set also [headers] and [reasonPhrase]. This value cannot be `null`.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it won't be used.
   int statusCode;
+
   ///The phrase describing the status code, for example `"OK"`. Must be non-empty.
   ///If reasonPhrase is set, then you need to set also [headers] and [reasonPhrase]. This value cannot be `null`.
   ///
   ///**NOTE**: Available on Android 21+. For Android < 21 it won't be used.
   String reasonPhrase;
 
-  WebResourceResponse({
-    this.contentType = "",
-    this.contentEncoding = "utf-8",
-    this.data = null,
-    this.headers,
-    this.statusCode,
-    this.reasonPhrase
-  });
+  WebResourceResponse(
+      {this.contentType = "",
+      this.contentEncoding = "utf-8",
+      this.data = null,
+      this.headers,
+      this.statusCode,
+      this.reasonPhrase});
 
   Map<String, dynamic> toMap() {
     return {
@@ -209,6 +264,15 @@ class WebResourceResponse {
       "reasonPhrase": reasonPhrase
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class representing the response returned by the [WebView.onLoadResourceCustomScheme] event.
@@ -228,13 +292,22 @@ class CustomSchemeResponse {
       @required this.contentType,
       this.contentEnconding = 'utf-8'});
 
-  Map<String, dynamic> toJson() {
+  Map<String, dynamic> toMap() {
     return {
       'content-type': contentType,
       'content-encoding': contentEnconding,
       'data': data
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class representing a JavaScript console message from WebCore.
@@ -247,6 +320,19 @@ class ConsoleMessage {
 
   ConsoleMessage(
       {this.message = "", this.messageLevel = ConsoleMessageLevel.LOG});
+
+  Map<String, dynamic> toMap() {
+    return {"message": message, "messageLevel": messageLevel?.toValue()};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class contains a snapshot of the current back/forward list for a [WebView].
@@ -258,6 +344,19 @@ class WebHistory {
   int currentIndex;
 
   WebHistory({this.list, this.currentIndex});
+
+  Map<String, dynamic> toMap() {
+    return {"list": list, "currentIndex": currentIndex};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///A convenience class for accessing fields in an entry in the back/forward list of a WebView. Each [WebHistoryItem] is a snapshot of the requested history item.
@@ -279,6 +378,25 @@ class WebHistoryItem {
 
   WebHistoryItem(
       {this.originalUrl, this.title, this.url, this.index, this.offset});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "originalUrl": originalUrl,
+      "title": title,
+      "url": url,
+      "index": index,
+      "offset": offset
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by the host application to set the Geolocation permission state for an origin during the [WebView.androidOnGeolocationPermissionsShowPrompt] event.
@@ -298,6 +416,15 @@ class GeolocationPermissionShowPromptResponse {
   Map<String, dynamic> toMap() {
     return {"origin": origin, "allow": allow, "retain": retain};
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [JsAlertResponse] class.
@@ -344,6 +471,15 @@ class JsAlertResponse {
       "action": action?.toValue()
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [JsConfirmResponse] class.
@@ -396,6 +532,15 @@ class JsConfirmResponse {
       "action": action?.toValue()
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [JsPromptResponse] class.
@@ -458,6 +603,15 @@ class JsPromptResponse {
       "action": action?.toValue()
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the reason the resource was caught by Safe Browsing.
@@ -547,6 +701,15 @@ class SafeBrowsingResponse {
   Map<String, dynamic> toMap() {
     return {"report": report, "action": action?.toValue()};
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [HttpAuthResponse] class.
@@ -601,6 +764,15 @@ class HttpAuthResponse {
       "action": action?.toValue()
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the challenge of the [WebView.onReceivedHttpAuthRequest] event.
@@ -615,6 +787,22 @@ class HttpAuthChallenge {
   HttpAuthChallenge(
       {@required this.previousFailureCount, @required this.protectionSpace})
       : assert(previousFailureCount != null && protectionSpace != null);
+
+  Map<String, dynamic> toMap() {
+    return {
+      "previousFailureCount": previousFailureCount,
+      "protectionSpace": protectionSpace?.toMap()
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents a protection space requiring authentication.
@@ -636,6 +824,19 @@ class ProtectionSpace {
   ProtectionSpace(
       {@required this.host, @required this.protocol, this.realm, this.port})
       : assert(host != null && protocol != null);
+
+  Map<String, dynamic> toMap() {
+    return {"host": host, "protocol": protocol, "realm": realm, "port": port};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the credentials of an http authentication.
@@ -649,6 +850,19 @@ class HttpAuthCredential {
 
   HttpAuthCredential({@required this.username, @required this.password})
       : assert(username != null && password != null);
+
+  Map<String, dynamic> toMap() {
+    return {"username": username, "password": password};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [ServerTrustAuthResponse] class.
@@ -681,6 +895,15 @@ class ServerTrustAuthResponse {
   Map<String, dynamic> toMap() {
     return {"action": action?.toValue()};
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the challenge of the [WebView.onReceivedServerTrustAuthRequest] event.
@@ -708,6 +931,24 @@ class ServerTrustChallenge {
       this.message,
       this.serverCertificate})
       : assert(protectionSpace != null && error != null);
+
+  Map<String, dynamic> toMap() {
+    return {
+      "protectionSpace": protectionSpace?.toMap(),
+      "error": error,
+      "message": message,
+      "serverCertificate": serverCertificate
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [ClientCertResponse] class.
@@ -764,6 +1005,15 @@ class ClientCertResponse {
       "action": action?.toValue()
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the challenge of the [WebView.onReceivedClientCertRequest] event.
@@ -774,6 +1024,19 @@ class ClientCertChallenge {
 
   ClientCertChallenge({@required this.protectionSpace})
       : assert(protectionSpace != null);
+
+  Map<String, dynamic> toMap() {
+    return {"protectionSpace": protectionSpace?.toMap()};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents a favicon of a website. It is used by [InAppWebViewController.getFavicons] method.
@@ -793,8 +1056,17 @@ class Favicon {
   Favicon({@required this.url, this.rel, this.width, this.height})
       : assert(url != null);
 
+  Map<String, dynamic> toMap() {
+    return {"url": url, "rel": rel, "width": width, "height": height};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
   String toString() {
-    return "url: $url, rel: $rel, width: $width, height: $height";
+    return toMap().toString();
   }
 }
 
@@ -949,7 +1221,7 @@ class AndroidLayoutAlgorithm {
   const AndroidLayoutAlgorithm._internal(this._value);
 
   static AndroidLayoutAlgorithm fromValue(String value) {
-    return (["NORMAL", "TEXT_AUTOSIZING"].contains(value))
+    return (["NORMAL", "TEXT_AUTOSIZING", "NARROW_COLUMNS"].contains(value))
         ? AndroidLayoutAlgorithm._internal(value)
         : null;
   }
@@ -969,6 +1241,10 @@ class AndroidLayoutAlgorithm {
   static const TEXT_AUTOSIZING =
       const AndroidLayoutAlgorithm._internal("TEXT_AUTOSIZING");
 
+  ///NARROW_COLUMNS makes all columns no wider than the screen if possible. Only use this for API levels prior to `Build.VERSION_CODES.KITKAT`.
+  static const NARROW_COLUMNS =
+      const AndroidLayoutAlgorithm._internal("NARROW_COLUMNS");
+
   bool operator ==(value) => value == _value;
 
   @override
@@ -1414,6 +1690,11 @@ class InAppWebViewGroupOptions {
   Map<String, dynamic> toJson() {
     return this.toMap();
   }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the options that can be used for an [InAppBrowser] WebView.
@@ -1455,6 +1736,11 @@ class InAppBrowserClassOptions {
   Map<String, dynamic> toJson() {
     return this.toMap();
   }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the options that can be used for an [ChromeSafariBrowser] window.
@@ -1479,6 +1765,11 @@ class ChromeSafariBrowserClassOptions {
   Map<String, dynamic> toJson() {
     return this.toMap();
   }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [AjaxRequest] class.
@@ -1509,6 +1800,11 @@ class AjaxRequestAction {
   Map<String, dynamic> toJson() {
     return this.toMap();
   }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [AjaxRequestEvent] class.
@@ -1770,6 +2066,11 @@ class AjaxRequest {
   Map<String, dynamic> toJson() {
     return this.toMap();
   }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [FetchRequest] class.
@@ -1802,6 +2103,15 @@ class FetchRequestCredential {
   Map<String, dynamic> toMap() {
     return {"type": type};
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the default credentials used by an [FetchRequest].
@@ -1817,6 +2127,15 @@ class FetchRequestCredentialDefault extends FetchRequestCredential {
       "value": value,
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents a [FederatedCredential](https://developer.mozilla.org/en-US/docs/Web/API/FederatedCredential) type of credentials.
@@ -1850,6 +2169,15 @@ class FetchRequestFederatedCredential extends FetchRequestCredential {
       "iconURL": iconURL
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents a [PasswordCredential](https://developer.mozilla.org/en-US/docs/Web/API/PasswordCredential) type of credentials.
@@ -1879,6 +2207,15 @@ class FetchRequestPasswordCredential extends FetchRequestCredential {
       "iconURL": iconURL
     };
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents a HTTP request created with JavaScript using the [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch).
@@ -1959,6 +2296,11 @@ class FetchRequest {
     return this.toMap();
   }
 
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+
   static FetchRequestCredential createFetchRequestCredentialFromMap(
       credentialsMap) {
     if (credentialsMap != null) {
@@ -2111,6 +2453,19 @@ class Cookie {
   dynamic value;
 
   Cookie({@required this.name, @required this.value});
+
+  Map<String, dynamic> toMap() {
+    return {"name": name, "value": value};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [PermissionRequestResponse] class.
@@ -2148,6 +2503,15 @@ class PermissionRequestResponse {
   Map<String, dynamic> toMap() {
     return {"resources": resources, "action": action?.toValue()};
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that is used by [WebView.shouldOverrideUrlLoading] event.
@@ -2251,6 +2615,27 @@ class ShouldOverrideUrlLoadingRequest {
       this.androidHasGesture,
       this.androidIsRedirect,
       this.iosWKNavigationType});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "url": url,
+      "headers": headers,
+      "method": method,
+      "isForMainFrame": isForMainFrame,
+      "androidHasGesture": androidHasGesture,
+      "androidIsRedirect": androidIsRedirect,
+      "iosWKNavigationType": iosWKNavigationType?.toValue()
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the navigation request used by the [WebView.onCreateWindow] event.
@@ -2272,6 +2657,24 @@ class OnCreateWindowRequest {
       this.androidIsDialog,
       this.androidIsUserGesture,
       this.iosWKNavigationType});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "url": url,
+      "androidIsDialog": androidIsDialog,
+      "androidIsUserGesture": androidIsUserGesture,
+      "iosWKNavigationType": iosWKNavigationType?.toValue()
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that encapsulates information about the amount of storage currently used by an origin for the JavaScript storage APIs.
@@ -2292,6 +2695,11 @@ class AndroidWebStorageOrigin {
     return {"origin": origin, "quota": quota, "usage": usage};
   }
 
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
   String toString() {
     return toMap().toString();
   }
@@ -2415,6 +2823,11 @@ class IOSWKWebsiteDataRecord {
     return {"displayName": displayName, "dataTypes": dataTypesString};
   }
 
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
   String toString() {
     return toMap().toString();
   }
@@ -2499,6 +2912,19 @@ class InAppWebViewHitTestResult {
   String extra;
 
   InAppWebViewHitTestResult({this.type, this.extra});
+
+  Map<String, dynamic> toMap() {
+    return {"type": type?.toValue(), "extra": extra};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class that represents the action to take used by the [WebView.androidOnRenderProcessUnresponsive] and [WebView.androidOnRenderProcessResponsive] event
@@ -2519,9 +2945,7 @@ class WebViewRenderProcessAction {
   int get hashCode => _value.hashCode;
 
   Map<String, dynamic> toMap() {
-    return {
-      "action": _value
-    };
+    return {"action": _value};
   }
 }
 
@@ -2532,11 +2956,28 @@ class RenderProcessGoneDetail {
   ///
   ///If the render process was killed, this is most likely caused by the system being low on memory.
   bool didCrash;
+
   /// Returns the renderer priority that was set at the time that the renderer exited. This may be greater than the priority that
   /// any individual [WebView] requested using [].
   RendererPriority rendererPriorityAtExit;
 
   RenderProcessGoneDetail({this.didCrash, this.rendererPriorityAtExit});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "didCrash": didCrash,
+      "rendererPriorityAtExit": rendererPriorityAtExit?.toValue()
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///Class used by [RendererPriorityPolicy] class.
@@ -2574,7 +3015,8 @@ class RendererPriority {
   static const RENDERER_PRIORITY_BOUND = const RendererPriority._internal(1);
 
   ///The renderer associated with this WebView is bound with Android `Context#BIND_IMPORTANT`.
-  static const RENDERER_PRIORITY_IMPORTANT = const RendererPriority._internal(2);
+  static const RENDERER_PRIORITY_IMPORTANT =
+      const RendererPriority._internal(2);
 
   bool operator ==(value) => value == _value;
 
@@ -2591,10 +3033,13 @@ class RendererPriority {
 class RendererPriorityPolicy {
   ///The minimum priority at which this WebView desires the renderer process to be bound.
   RendererPriority rendererRequestedPriority;
+
   ///If true, this flag specifies that when this WebView is not visible, it will be treated as if it had requested a priority of [RendererPriority.RENDERER_PRIORITY_WAIVED].
   bool waivedWhenNotVisible;
 
-  RendererPriorityPolicy({@required this.rendererRequestedPriority, @required this.waivedWhenNotVisible});
+  RendererPriorityPolicy(
+      {@required this.rendererRequestedPriority,
+      @required this.waivedWhenNotVisible});
 
   Map<String, dynamic> toMap() {
     return {
@@ -2603,11 +3048,22 @@ class RendererPriorityPolicy {
     };
   }
 
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+
   static RendererPriorityPolicy fromMap(Map<String, dynamic> map) {
-    return map != null ? RendererPriorityPolicy(
-      rendererRequestedPriority: RendererPriority.fromValue(map["rendererRequestedPriority"]),
-      waivedWhenNotVisible: map["waivedWhenNotVisible"]
-    ) : RendererPriorityPolicy();
+    return map != null
+        ? RendererPriorityPolicy(
+            rendererRequestedPriority:
+                RendererPriority.fromValue(map["rendererRequestedPriority"]),
+            waivedWhenNotVisible: map["waivedWhenNotVisible"])
+        : RendererPriorityPolicy();
   }
 }
 
@@ -2631,9 +3087,16 @@ class FormResubmissionAction {
   int get hashCode => _value.hashCode;
 
   Map<String, dynamic> toMap() {
-    return {
-      "action": _value
-    };
+    return {"action": _value};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
   }
 }
 
@@ -2666,16 +3129,14 @@ class AndroidOverScrollMode {
   }
 
   ///Always allow a user to over-scroll this view, provided it is a view that can scroll.
-  static const OVER_SCROLL_ALWAYS =
-  const AndroidOverScrollMode._internal(0);
+  static const OVER_SCROLL_ALWAYS = const AndroidOverScrollMode._internal(0);
 
   ///Allow a user to over-scroll this view only if the content is large enough to meaningfully scroll, provided it is a view that can scroll.
   static const OVER_SCROLL_IF_CONTENT_SCROLLS =
-  const AndroidOverScrollMode._internal(1);
+      const AndroidOverScrollMode._internal(1);
 
   ///Never allow a user to over-scroll this view.
-  static const OVER_SCROLL_NEVER =
-  const AndroidOverScrollMode._internal(2);
+  static const OVER_SCROLL_NEVER = const AndroidOverScrollMode._internal(2);
 
   bool operator ==(value) => value == _value;
 
@@ -2721,22 +3182,22 @@ class AndroidScrollBarStyle {
   ///The scrollbar style to display the scrollbars inside the content area, without increasing the padding.
   ///The scrollbars will be overlaid with translucency on the view's content.
   static const SCROLLBARS_INSIDE_OVERLAY =
-  const AndroidScrollBarStyle._internal(0);
+      const AndroidScrollBarStyle._internal(0);
 
   ///The scrollbar style to display the scrollbars inside the padded area, increasing the padding of the view.
   ///The scrollbars will not overlap the content area of the view.
   static const SCROLLBARS_INSIDE_INSET =
-  const AndroidScrollBarStyle._internal(16777216);
+      const AndroidScrollBarStyle._internal(16777216);
 
   ///The scrollbar style to display the scrollbars at the edge of the view, without increasing the padding.
   ///The scrollbars will be overlaid with translucency.
   static const SCROLLBARS_OUTSIDE_OVERLAY =
-  const AndroidScrollBarStyle._internal(33554432);
+      const AndroidScrollBarStyle._internal(33554432);
 
   ///The scrollbar style to display the scrollbars at the edge of the view, increasing the padding of the view.
   ///The scrollbars will only overlap the background, if any.
   static const SCROLLBARS_OUTSIDE_INSET =
-  const AndroidScrollBarStyle._internal(50331648);
+      const AndroidScrollBarStyle._internal(50331648);
 
   bool operator ==(value) => value == _value;
 
@@ -2773,15 +3234,15 @@ class AndroidVerticalScrollbarPosition {
 
   ///Position the scroll bar at the default position as determined by the system.
   static const SCROLLBAR_POSITION_DEFAULT =
-  const AndroidVerticalScrollbarPosition._internal(0);
+      const AndroidVerticalScrollbarPosition._internal(0);
 
   ///Position the scroll bar along the left edge.
   static const SCROLLBAR_POSITION_LEFT =
-  const AndroidVerticalScrollbarPosition._internal(1);
+      const AndroidVerticalScrollbarPosition._internal(1);
 
   ///Position the scroll bar along the right edge.
   static const SCROLLBAR_POSITION_RIGHT =
-  const AndroidVerticalScrollbarPosition._internal(2);
+      const AndroidVerticalScrollbarPosition._internal(2);
 
   bool operator ==(value) => value == _value;
 
@@ -2793,15 +3254,29 @@ class AndroidVerticalScrollbarPosition {
 class AndroidWebViewPackageInfo {
   ///The version name of this WebView package.
   String versionName;
+
   ///The name of this WebView package.
   String packageName;
 
   AndroidWebViewPackageInfo({this.versionName, this.packageName});
 
   static AndroidWebViewPackageInfo fromMap(Map<String, dynamic> map) {
-    return map != null ? AndroidWebViewPackageInfo(
-      versionName: map["versionName"],
-      packageName: map["packageName"]
-    ) : AndroidWebViewPackageInfo();
+    return map != null
+        ? AndroidWebViewPackageInfo(
+            versionName: map["versionName"], packageName: map["packageName"])
+        : AndroidWebViewPackageInfo();
+  }
+
+  Map<String, dynamic> toMap() {
+    return {"versionName": versionName, "packageName": packageName};
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
   }
 }

lib/src/web_storage_manager.dart

@@ -40,10 +40,15 @@ class AndroidWebStorageManager {
     List<AndroidWebStorageOrigin> originsList = [];
 
     Map<String, dynamic> args = <String, dynamic>{};
-    List<Map<dynamic, dynamic>> origins = (await WebStorageManager._channel.invokeMethod('getOrigins', args)).cast<Map<dynamic, dynamic>>();
-
-    for(var origin in origins) {
-      originsList.add(AndroidWebStorageOrigin(origin: origin["origin"], quota: origin["quota"], usage: origin["usage"]));
+    List<Map<dynamic, dynamic>> origins =
+        (await WebStorageManager._channel.invokeMethod('getOrigins', args))
+            .cast<Map<dynamic, dynamic>>();
+
+    for (var origin in origins) {
+      originsList.add(AndroidWebStorageOrigin(
+          origin: origin["origin"],
+          quota: origin["quota"],
+          usage: origin["usage"]));
     }
 
     return originsList;
@@ -72,7 +77,8 @@ class AndroidWebStorageManager {
     assert(origin != null);
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent("origin", () => origin);
-    return await WebStorageManager._channel.invokeMethod('getQuotaForOrigin', args);
+    return await WebStorageManager._channel
+        .invokeMethod('getQuotaForOrigin', args);
   }
 
   ///Gets the amount of storage currently being used by both the Application Cache and Web SQL Database APIs by the given [origin].
@@ -81,7 +87,8 @@ class AndroidWebStorageManager {
     assert(origin != null);
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent("origin", () => origin);
-    return await WebStorageManager._channel.invokeMethod('getUsageForOrigin', args);
+    return await WebStorageManager._channel
+        .invokeMethod('getUsageForOrigin', args);
   }
 }
 
@@ -93,7 +100,8 @@ class IOSWebStorageManager {
   ///Fetches data records containing the given website data types.
   ///
   ///[dataTypes] represents the website data types to fetch records for.
-  Future<List<IOSWKWebsiteDataRecord>> fetchDataRecords({@required Set<IOSWKWebsiteDataType> dataTypes}) async {
+  Future<List<IOSWKWebsiteDataRecord>> fetchDataRecords(
+      {@required Set<IOSWKWebsiteDataType> dataTypes}) async {
     assert(dataTypes != null);
     List<IOSWKWebsiteDataRecord> recordList = [];
     List<String> dataTypesList = [];
@@ -102,14 +110,17 @@ class IOSWebStorageManager {
     }
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent("dataTypes", () => dataTypesList);
-    List<Map<dynamic, dynamic>> records = (await WebStorageManager._channel.invokeMethod('fetchDataRecords', args)).cast<Map<dynamic, dynamic>>();
-    for(var record in records) {
+    List<Map<dynamic, dynamic>> records = (await WebStorageManager._channel
+            .invokeMethod('fetchDataRecords', args))
+        .cast<Map<dynamic, dynamic>>();
+    for (var record in records) {
       List<String> dataTypesString = record["dataTypes"].cast<String>();
       Set<IOSWKWebsiteDataType> dataTypes = Set();
-      for(var dataType in dataTypesString) {
+      for (var dataType in dataTypesString) {
         dataTypes.add(IOSWKWebsiteDataType.fromValue(dataType));
       }
-      recordList.add(IOSWKWebsiteDataRecord(displayName: record["displayName"], dataTypes: dataTypes));
+      recordList.add(IOSWKWebsiteDataRecord(
+          displayName: record["displayName"], dataTypes: dataTypes));
     }
     return recordList;
   }
@@ -119,7 +130,9 @@ class IOSWebStorageManager {
   ///[dataTypes] represents the website data types that should be removed.
   ///
   ///[dataRecords] represents the website data records to delete website data for.
-  Future<void> removeDataFor({@required Set<IOSWKWebsiteDataType> dataTypes, @required List<IOSWKWebsiteDataRecord> dataRecords}) async {
+  Future<void> removeDataFor(
+      {@required Set<IOSWKWebsiteDataType> dataTypes,
+      @required List<IOSWKWebsiteDataRecord> dataRecords}) async {
     assert(dataTypes != null && dataRecords != null);
 
     List<String> dataTypesList = [];
@@ -143,7 +156,9 @@ class IOSWebStorageManager {
   ///[dataTypes] represents the website data types that should be removed.
   ///
   ///[date] represents a date. All website data modified after this date will be removed.
-  Future<void> removeDataModifiedSince({@required Set<IOSWKWebsiteDataType> dataTypes, @required DateTime date}) async {
+  Future<void> removeDataModifiedSince(
+      {@required Set<IOSWKWebsiteDataType> dataTypes,
+      @required DateTime date}) async {
     assert(dataTypes != null && date != null);
 
     List<String> dataTypesList = [];
@@ -156,6 +171,7 @@ class IOSWebStorageManager {
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent("dataTypes", () => dataTypesList);
     args.putIfAbsent("timestamp", () => timestamp);
-    await WebStorageManager._channel.invokeMethod('removeDataModifiedSince', args);
+    await WebStorageManager._channel
+        .invokeMethod('removeDataModifiedSince', args);
   }
 }

lib/src/webview.dart

@@ -15,7 +15,7 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onPageStarted(android.webkit.WebView,%20java.lang.String,%20android.graphics.Bitmap)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455621-webview
   final void Function(InAppWebViewController controller, String url)
-  onLoadStart;
+      onLoadStart;
 
   ///Event fired when the [WebView] finishes loading an [url].
   ///
@@ -49,14 +49,14 @@ abstract class WebView {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebChromeClient#onProgressChanged(android.webkit.WebView,%20int)
   final void Function(InAppWebViewController controller, int progress)
-  onProgressChanged;
+      onProgressChanged;
 
   ///Event fired when the [WebView] receives a [ConsoleMessage].
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebChromeClient#onConsoleMessage(android.webkit.ConsoleMessage)
   final void Function(
-      InAppWebViewController controller, ConsoleMessage consoleMessage)
-  onConsoleMessage;
+          InAppWebViewController controller, ConsoleMessage consoleMessage)
+      onConsoleMessage;
 
   ///Give the host application a chance to take control when a URL is about to be loaded in the current WebView. This event is not called on the initial load of the WebView.
   ///
@@ -73,16 +73,16 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#shouldOverrideUrlLoading(android.webkit.WebView,%20java.lang.String)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455641-webview
   final Future<ShouldOverrideUrlLoadingAction> Function(
-      InAppWebViewController controller,
-      ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest)
-  shouldOverrideUrlLoading;
+          InAppWebViewController controller,
+          ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest)
+      shouldOverrideUrlLoading;
 
   ///Event fired when the [WebView] loads a resource.
   ///
   ///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useOnLoadResource] and [InAppWebViewOptions.javaScriptEnabled] options to `true`.
   final void Function(
-      InAppWebViewController controller, LoadedResource resource)
-  onLoadResource;
+          InAppWebViewController controller, LoadedResource resource)
+      onLoadResource;
 
   ///Event fired when the [WebView] scrolls.
   ///
@@ -93,7 +93,7 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebView#onScrollChanged(int,%20int,%20int,%20int)
   ///**Official iOS API**: https://developer.apple.com/documentation/uikit/uiscrollviewdelegate/1619392-scrollviewdidscroll
   final void Function(InAppWebViewController controller, int x, int y)
-  onScrollChanged;
+      onScrollChanged;
 
   ///Event fired when [WebView] recognizes a downloadable file.
   ///To download the file, you can use the [flutter_downloader](https://pub.dev/packages/flutter_downloader) plugin.
@@ -105,7 +105,7 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebView#setDownloadListener(android.webkit.DownloadListener)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455643-webview
   final void Function(InAppWebViewController controller, String url)
-  onDownloadStart;
+      onDownloadStart;
 
   ///Event fired when the [WebView] finds the `custom-scheme` while loading a resource. Here you can handle the url request and return a [CustomSchemeResponse] to load a specific resource encoded to `base64`.
   ///
@@ -115,8 +115,8 @@ abstract class WebView {
   ///
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wkurlschemehandler
   final Future<CustomSchemeResponse> Function(
-      InAppWebViewController controller, String scheme, String url)
-  onLoadResourceCustomScheme;
+          InAppWebViewController controller, String scheme, String url)
+      onLoadResourceCustomScheme;
 
   ///Event fired when the [WebView] requests the host application to create a new window,
   ///for example when trying to open a link with `target="_blank"` or when `window.open()` is called by JavaScript side.
@@ -169,8 +169,8 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onReceivedHttpAuthRequest(android.webkit.WebView,%20android.webkit.HttpAuthHandler,%20java.lang.String,%20java.lang.String)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455638-webview
   final Future<HttpAuthResponse> Function(
-      InAppWebViewController controller, HttpAuthChallenge challenge)
-  onReceivedHttpAuthRequest;
+          InAppWebViewController controller, HttpAuthChallenge challenge)
+      onReceivedHttpAuthRequest;
 
   ///Event fired when the WebView need to perform server trust authentication (certificate validation).
   ///The host application must return either [ServerTrustAuthResponse] instance with [ServerTrustAuthResponseAction.CANCEL] or [ServerTrustAuthResponseAction.PROCEED].
@@ -180,8 +180,8 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onReceivedSslError(android.webkit.WebView,%20android.webkit.SslErrorHandler,%20android.net.http.SslError)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455638-webview
   final Future<ServerTrustAuthResponse> Function(
-      InAppWebViewController controller, ServerTrustChallenge challenge)
-  onReceivedServerTrustAuthRequest;
+          InAppWebViewController controller, ServerTrustChallenge challenge)
+      onReceivedServerTrustAuthRequest;
 
   ///Notify the host application to handle an SSL client certificate request.
   ///Webview stores the response in memory (for the life of the application) if [ClientCertResponseAction.PROCEED] or [ClientCertResponseAction.CANCEL]
@@ -193,8 +193,8 @@ abstract class WebView {
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onReceivedClientCertRequest(android.webkit.WebView,%20android.webkit.ClientCertRequest)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455638-webview
   final Future<ClientCertResponse> Function(
-      InAppWebViewController controller, ClientCertChallenge challenge)
-  onReceivedClientCertRequest;
+          InAppWebViewController controller, ClientCertChallenge challenge)
+      onReceivedClientCertRequest;
 
   ///Event fired as find-on-page operations progress.
   ///The listener may be notified multiple times while the operation is underway, and the numberOfMatches value should not be considered final unless [isDoneCounting] is true.
@@ -220,8 +220,8 @@ abstract class WebView {
   ///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
   ///Inside the `window.addEventListener("flutterInAppWebViewPlatformReady")` event, the ajax requests will be intercept for sure.
   final Future<AjaxRequest> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  shouldInterceptAjaxRequest;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      shouldInterceptAjaxRequest;
 
   ///Event fired whenever the `readyState` attribute of an `XMLHttpRequest` changes.
   ///It gives the host application a chance to abort the request.
@@ -234,8 +234,8 @@ abstract class WebView {
   ///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
   ///Inside the `window.addEventListener("flutterInAppWebViewPlatformReady")` event, the ajax requests will be intercept for sure.
   final Future<AjaxRequestAction> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  onAjaxReadyStateChange;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      onAjaxReadyStateChange;
 
   ///Event fired as an `XMLHttpRequest` progress.
   ///It gives the host application a chance to abort the request.
@@ -248,8 +248,8 @@ abstract class WebView {
   ///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
   ///Inside the `window.addEventListener("flutterInAppWebViewPlatformReady")` event, the ajax requests will be intercept for sure.
   final Future<AjaxRequestAction> Function(
-      InAppWebViewController controller, AjaxRequest ajaxRequest)
-  onAjaxProgress;
+          InAppWebViewController controller, AjaxRequest ajaxRequest)
+      onAjaxProgress;
 
   ///Event fired when a request is sent to a server through [Fetch API](https://developer.mozilla.org/it/docs/Web/API/Fetch_API).
   ///It gives the host application a chance to take control over the request before sending it.
@@ -262,8 +262,8 @@ abstract class WebView {
   ///used to intercept fetch requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
   ///Inside the `window.addEventListener("flutterInAppWebViewPlatformReady")` event, the fetch requests will be intercept for sure.
   final Future<FetchRequest> Function(
-      InAppWebViewController controller, FetchRequest fetchRequest)
-  shouldInterceptFetchRequest;
+          InAppWebViewController controller, FetchRequest fetchRequest)
+      shouldInterceptFetchRequest;
 
   ///Event fired when the host application updates its visited links database.
   ///This event is also fired when the navigation state of the [WebView] changes through the usage of
@@ -276,8 +276,8 @@ abstract class WebView {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#doUpdateVisitedHistory(android.webkit.WebView,%20java.lang.String,%20boolean)
   final void Function(
-      InAppWebViewController controller, String url, bool androidIsReload)
-  onUpdateVisitedHistory;
+          InAppWebViewController controller, String url, bool androidIsReload)
+      onUpdateVisitedHistory;
 
   ///Event fired when `window.print()` is called from JavaScript side.
   ///
@@ -316,7 +316,8 @@ abstract class WebView {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onPageCommitVisible(android.webkit.WebView,%20java.lang.String)
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455635-webview
-  final Future<void> Function(InAppWebViewController controller, String url) onPageCommitVisible;
+  final Future<void> Function(InAppWebViewController controller, String url)
+      onPageCommitVisible;
 
   ///Event fired when the webview notifies that a loading URL has been flagged by Safe Browsing.
   ///The default behavior is to show an interstitial to the user, with the reporting checkbox visible.
@@ -355,8 +356,8 @@ abstract class WebView {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebChromeClient#onGeolocationPermissionsShowPrompt(java.lang.String,%20android.webkit.GeolocationPermissions.Callback)
   final Future<GeolocationPermissionShowPromptResponse> Function(
-      InAppWebViewController controller, String origin)
-  androidOnGeolocationPermissionsShowPrompt;
+          InAppWebViewController controller, String origin)
+      androidOnGeolocationPermissionsShowPrompt;
 
   ///Notify the host application that a request for Geolocation permissions, made with a previous call to [androidOnGeolocationPermissionsShowPrompt] has been canceled.
   ///Any related UI should therefore be hidden.
@@ -365,7 +366,7 @@ abstract class WebView {
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebChromeClient#onGeolocationPermissionsHidePrompt()
   final Future<void> Function(InAppWebViewController controller)
-  androidOnGeolocationPermissionsHidePrompt;
+      androidOnGeolocationPermissionsHidePrompt;
 
   ///Notify the host application of a resource request and allow the application to return the data.
   ///If the return value is `null`, the WebView will continue to load the resource as usual.
@@ -384,8 +385,9 @@ abstract class WebView {
   ///**Official Android API**:
   ///- https://developer.android.com/reference/android/webkit/WebViewClient#shouldInterceptRequest(android.webkit.WebView,%20android.webkit.WebResourceRequest)
   ///- https://developer.android.com/reference/android/webkit/WebViewClient#shouldInterceptRequest(android.webkit.WebView,%20java.lang.String)
-  final Future<WebResourceResponse> Function(InAppWebViewController controller, WebResourceRequest request)
-  androidShouldInterceptRequest;
+  final Future<WebResourceResponse> Function(
+          InAppWebViewController controller, WebResourceRequest request)
+      androidShouldInterceptRequest;
 
   ///Event called when the renderer currently associated with the WebView becomes unresponsive as a result of a long running blocking task such as the execution of JavaScript.
   ///
@@ -405,8 +407,9 @@ abstract class WebView {
   ///**NOTE**: available only on Android 29+.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewRenderProcessClient#onRenderProcessUnresponsive(android.webkit.WebView,%20android.webkit.WebViewRenderProcess)
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessUnresponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessUnresponsive;
 
   ///Event called once when an unresponsive renderer currently associated with the WebView becomes responsive.
   ///
@@ -419,8 +422,9 @@ abstract class WebView {
   ///**NOTE**: available only on Android 29+.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewRenderProcessClient#onRenderProcessResponsive(android.webkit.WebView,%20android.webkit.WebViewRenderProcess)
-  final Future<WebViewRenderProcessAction> Function(InAppWebViewController controller, String url)
-  androidOnRenderProcessResponsive;
+  final Future<WebViewRenderProcessAction> Function(
+          InAppWebViewController controller, String url)
+      androidOnRenderProcessResponsive;
 
   ///Event fired when the given WebView's render process has exited.
   ///The application's implementation of this callback should only attempt to clean up the WebView.
@@ -431,16 +435,17 @@ abstract class WebView {
   ///**NOTE**: available only on Android 26+.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onRenderProcessGone(android.webkit.WebView,%20android.webkit.RenderProcessGoneDetail)
-  final Future<void> Function(InAppWebViewController controller, RenderProcessGoneDetail detail)
-  androidOnRenderProcessGone;
+  final Future<void> Function(
+          InAppWebViewController controller, RenderProcessGoneDetail detail)
+      androidOnRenderProcessGone;
 
   ///As the host application if the browser should resend data as the requested page was a result of a POST. The default is to not resend the data.
   ///
   ///**NOTE**: available only on Android.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onFormResubmission(android.webkit.WebView,%20android.os.Message,%20android.os.Message)
-  final Future<FormResubmissionAction> Function(InAppWebViewController controller, String url)
-  androidOnFormResubmission;
+  final Future<FormResubmissionAction> Function(
+      InAppWebViewController controller, String url) androidOnFormResubmission;
 
   ///Event fired when the scale applied to the WebView has changed.
   ///
@@ -451,8 +456,9 @@ abstract class WebView {
   ///**NOTE**: available only on Android.
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebViewClient#onScaleChanged(android.webkit.WebView,%20float,%20float)
-  final Future<void> Function(InAppWebViewController controller, double oldScale, double newScale)
-  androidOnScaleChanged;
+  final Future<void> Function(
+          InAppWebViewController controller, double oldScale, double newScale)
+      androidOnScaleChanged;
 
   ///Invoked when the web view's web content process is terminated.
   ///
@@ -460,7 +466,7 @@ abstract class WebView {
   ///
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455639-webviewwebcontentprocessdidtermi
   final Future<void> Function(InAppWebViewController controller)
-  iosOnWebContentProcessDidTerminate;
+      iosOnWebContentProcessDidTerminate;
 
   ///Called when a web view receives a server redirect.
   ///
@@ -468,7 +474,7 @@ abstract class WebView {
   ///
   ///**Official iOS API**: https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455627-webview
   final Future<void> Function(InAppWebViewController controller)
-  iosOnDidReceiveServerRedirectForProvisionalNavigation;
+      iosOnDidReceiveServerRedirectForProvisionalNavigation;
 
   ///Initial url that will be loaded.
   final String initialUrl;
@@ -488,54 +494,53 @@ abstract class WebView {
   ///Context menu which contains custom menu items to be shown when [ContextMenu] is presented.
   final ContextMenu contextMenu;
 
-  WebView({
-    this.onWebViewCreated,
-    this.onLoadStart,
-    this.onLoadStop,
-    this.onLoadError,
-    this.onLoadHttpError,
-    this.onProgressChanged,
-    this.onConsoleMessage,
-    this.shouldOverrideUrlLoading,
-    this.onLoadResource,
-    this.onScrollChanged,
-    this.onDownloadStart,
-    this.onLoadResourceCustomScheme,
-    this.onCreateWindow,
-    this.onJsAlert,
-    this.onJsConfirm,
-    this.onJsPrompt,
-    this.onReceivedHttpAuthRequest,
-    this.onReceivedServerTrustAuthRequest,
-    this.onReceivedClientCertRequest,
-    this.onFindResultReceived,
-    this.shouldInterceptAjaxRequest,
-    this.onAjaxReadyStateChange,
-    this.onAjaxProgress,
-    this.shouldInterceptFetchRequest,
-    this.onUpdateVisitedHistory,
-    this.onPrint,
-    this.onLongPressHitTestResult,
-    this.onEnterFullscreen,
-    this.onExitFullscreen,
-    this.onPageCommitVisible,
-    this.androidOnSafeBrowsingHit,
-    this.androidOnPermissionRequest,
-    this.androidOnGeolocationPermissionsShowPrompt,
-    this.androidOnGeolocationPermissionsHidePrompt,
-    this.androidShouldInterceptRequest,
-    this.androidOnRenderProcessGone,
-    this.androidOnRenderProcessResponsive,
-    this.androidOnRenderProcessUnresponsive,
-    this.androidOnFormResubmission,
-    this.androidOnScaleChanged,
-    this.iosOnWebContentProcessDidTerminate,
-    this.iosOnDidReceiveServerRedirectForProvisionalNavigation,
-    this.initialUrl,
-    this.initialFile,
-    this.initialData,
-    this.initialHeaders,
-    this.initialOptions,
-    this.contextMenu
-  });
-}
\ No newline at end of file
+  WebView(
+      {this.onWebViewCreated,
+      this.onLoadStart,
+      this.onLoadStop,
+      this.onLoadError,
+      this.onLoadHttpError,
+      this.onProgressChanged,
+      this.onConsoleMessage,
+      this.shouldOverrideUrlLoading,
+      this.onLoadResource,
+      this.onScrollChanged,
+      this.onDownloadStart,
+      this.onLoadResourceCustomScheme,
+      this.onCreateWindow,
+      this.onJsAlert,
+      this.onJsConfirm,
+      this.onJsPrompt,
+      this.onReceivedHttpAuthRequest,
+      this.onReceivedServerTrustAuthRequest,
+      this.onReceivedClientCertRequest,
+      this.onFindResultReceived,
+      this.shouldInterceptAjaxRequest,
+      this.onAjaxReadyStateChange,
+      this.onAjaxProgress,
+      this.shouldInterceptFetchRequest,
+      this.onUpdateVisitedHistory,
+      this.onPrint,
+      this.onLongPressHitTestResult,
+      this.onEnterFullscreen,
+      this.onExitFullscreen,
+      this.onPageCommitVisible,
+      this.androidOnSafeBrowsingHit,
+      this.androidOnPermissionRequest,
+      this.androidOnGeolocationPermissionsShowPrompt,
+      this.androidOnGeolocationPermissionsHidePrompt,
+      this.androidShouldInterceptRequest,
+      this.androidOnRenderProcessGone,
+      this.androidOnRenderProcessResponsive,
+      this.androidOnRenderProcessUnresponsive,
+      this.androidOnFormResubmission,
+      this.androidOnScaleChanged,
+      this.iosOnWebContentProcessDidTerminate,
+      this.iosOnDidReceiveServerRedirectForProvisionalNavigation,
+      this.initialUrl,
+      this.initialFile,
+      this.initialData,
+      this.initialHeaders,
+      this.initialOptions,
+      this.contextMenu});
+}

lib/src/webview_options.dart

@@ -16,6 +16,15 @@ class WebViewOptions {
   static WebViewOptions fromMap(Map<String, dynamic> map) {
     return null;
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 class BrowserOptions {
@@ -26,6 +35,15 @@ class BrowserOptions {
   static BrowserOptions fromMap(Map<String, dynamic> map) {
     return null;
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 class ChromeSafariBrowserOptions {
@@ -36,6 +54,15 @@ class ChromeSafariBrowserOptions {
   static ChromeSafariBrowserOptions fromMap(Map<String, dynamic> map) {
     return null;
   }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the cross-platform WebView options available.
@@ -148,8 +175,7 @@ class InAppWebViewOptions
       this.horizontalScrollBarEnabled = true,
       this.resourceCustomSchemes = const [],
       this.contentBlockers = const [],
-      this.preferredContentMode =
-          UserPreferredContentMode.RECOMMENDED,
+      this.preferredContentMode = UserPreferredContentMode.RECOMMENDED,
       this.useShouldInterceptAjaxRequest = false,
       this.useShouldInterceptFetchRequest = false,
       this.incognito = false,
@@ -229,8 +255,7 @@ class InAppWebViewOptions
         List<String>.from(map["resourceCustomSchemes"] ?? []);
     options.contentBlockers = contentBlockers;
     options.preferredContentMode =
-        UserPreferredContentMode.fromValue(
-            map["preferredContentMode"]);
+        UserPreferredContentMode.fromValue(map["preferredContentMode"]);
     options.useShouldInterceptAjaxRequest =
         map["useShouldInterceptAjaxRequest"];
     options.useShouldInterceptFetchRequest =
@@ -243,6 +268,16 @@ class InAppWebViewOptions
     options.disableContextMenu = map["disableContextMenu"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the Android-only WebView options available.
@@ -503,7 +538,8 @@ class AndroidInAppWebViewOptions
     this.overScrollMode = AndroidOverScrollMode.OVER_SCROLL_IF_CONTENT_SCROLLS,
     this.networkAvailable,
     this.scrollBarStyle = AndroidScrollBarStyle.SCROLLBARS_INSIDE_OVERLAY,
-    this.verticalScrollbarPosition = AndroidVerticalScrollbarPosition.SCROLLBAR_POSITION_DEFAULT,
+    this.verticalScrollbarPosition =
+        AndroidVerticalScrollbarPosition.SCROLLBAR_POSITION_DEFAULT,
     this.scrollBarDefaultDelayBeforeFade,
     this.scrollbarFadingEnabled = true,
     this.scrollBarFadeDuration,
@@ -589,19 +625,16 @@ class AndroidInAppWebViewOptions
     options.appCachePath = map["appCachePath"];
     options.blockNetworkImage = map["blockNetworkImage"];
     options.blockNetworkLoads = map["blockNetworkLoads"];
-    options.cacheMode =
-        AndroidCacheMode.fromValue(map["cacheMode"]);
+    options.cacheMode = AndroidCacheMode.fromValue(map["cacheMode"]);
     options.cursiveFontFamily = map["cursiveFontFamily"];
     options.defaultFixedFontSize = map["defaultFixedFontSize"];
     options.defaultFontSize = map["defaultFontSize"];
     options.defaultTextEncodingName = map["defaultTextEncodingName"];
     options.disabledActionModeMenuItems =
-        AndroidActionModeMenuItem.fromValue(
-            map["disabledActionModeMenuItems"]);
+        AndroidActionModeMenuItem.fromValue(map["disabledActionModeMenuItems"]);
     options.fantasyFontFamily = map["fantasyFontFamily"];
     options.fixedFontFamily = map["fixedFontFamily"];
-    options.forceDark =
-        AndroidForceDark.fromValue(map["forceDark"]);
+    options.forceDark = AndroidForceDark.fromValue(map["forceDark"]);
     options.geolocationEnabled = map["geolocationEnabled"];
     options.layoutAlgorithm =
         AndroidLayoutAlgorithm.fromValue(map["layoutAlgorithm"]);
@@ -618,19 +651,36 @@ class AndroidInAppWebViewOptions
     options.thirdPartyCookiesEnabled = map["thirdPartyCookiesEnabled"];
     options.hardwareAcceleration = map["hardwareAcceleration"];
     options.supportMultipleWindows = map["supportMultipleWindows"];
-    options.regexToCancelSubFramesLoading = map["regexToCancelSubFramesLoading"];
+    options.regexToCancelSubFramesLoading =
+        map["regexToCancelSubFramesLoading"];
     options.useShouldInterceptRequest = map["useShouldInterceptRequest"];
     options.useOnRenderProcessGone = map["useOnRenderProcessGone"];
-    options.overScrollMode = AndroidOverScrollMode.fromValue(map["overScrollMode"]);
+    options.overScrollMode =
+        AndroidOverScrollMode.fromValue(map["overScrollMode"]);
     options.networkAvailable = map["networkAvailable"];
-    options.scrollBarStyle = AndroidScrollBarStyle.fromValue(map["scrollBarStyle"]);
-    options.verticalScrollbarPosition = AndroidVerticalScrollbarPosition.fromValue(map["verticalScrollbarPosition"]);
-    options.scrollBarDefaultDelayBeforeFade = map["scrollBarDefaultDelayBeforeFade"];
+    options.scrollBarStyle =
+        AndroidScrollBarStyle.fromValue(map["scrollBarStyle"]);
+    options.verticalScrollbarPosition =
+        AndroidVerticalScrollbarPosition.fromValue(
+            map["verticalScrollbarPosition"]);
+    options.scrollBarDefaultDelayBeforeFade =
+        map["scrollBarDefaultDelayBeforeFade"];
     options.scrollbarFadingEnabled = map["scrollbarFadingEnabled"];
     options.scrollBarFadeDuration = map["scrollBarFadeDuration"];
-    options.rendererPriorityPolicy = RendererPriorityPolicy.fromMap(map["rendererPriorityPolicy"]?.cast<String, dynamic>());
+    options.rendererPriorityPolicy = RendererPriorityPolicy.fromMap(
+        map["rendererPriorityPolicy"]?.cast<String, dynamic>());
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the iOS-only WebView options available.
@@ -786,7 +836,8 @@ class IOSInAppWebViewOptions
       "selectionGranularity": selectionGranularity.toValue(),
       "dataDetectorTypes": dataDetectorTypesList,
       "sharedCookiesEnabled": sharedCookiesEnabled,
-      "automaticallyAdjustsScrollIndicatorInsets": automaticallyAdjustsScrollIndicatorInsets,
+      "automaticallyAdjustsScrollIndicatorInsets":
+          automaticallyAdjustsScrollIndicatorInsets,
       "accessibilityIgnoresInvertColors": accessibilityIgnoresInvertColors,
       "decelerationRate": decelerationRate.toValue(),
       "alwaysBounceVertical": alwaysBounceVertical,
@@ -803,8 +854,7 @@ class IOSInAppWebViewOptions
     List<String> dataDetectorTypesList =
         List<String>.from(map["dataDetectorTypes"] ?? []);
     dataDetectorTypesList.forEach((dataDetectorType) {
-      dataDetectorTypes
-          .add(IOSWKDataDetectorTypes.fromValue(dataDetectorType));
+      dataDetectorTypes.add(IOSWKDataDetectorTypes.fromValue(dataDetectorType));
     });
 
     IOSInAppWebViewOptions options = IOSInAppWebViewOptions();
@@ -824,13 +874,15 @@ class IOSInAppWebViewOptions
     options.isFraudulentWebsiteWarningEnabled =
         map["isFraudulentWebsiteWarningEnabled"];
     options.selectionGranularity =
-        IOSWKSelectionGranularity.fromValue(
-            map["selectionGranularity"]);
+        IOSWKSelectionGranularity.fromValue(map["selectionGranularity"]);
     options.dataDetectorTypes = dataDetectorTypes;
     options.sharedCookiesEnabled = map["sharedCookiesEnabled"];
-    options.automaticallyAdjustsScrollIndicatorInsets = map["automaticallyAdjustsScrollIndicatorInsets"];
-    options.accessibilityIgnoresInvertColors = map["accessibilityIgnoresInvertColors"];
-    options.decelerationRate = IOSUIScrollViewDecelerationRate.fromValue(map["decelerationRate"]);
+    options.automaticallyAdjustsScrollIndicatorInsets =
+        map["automaticallyAdjustsScrollIndicatorInsets"];
+    options.accessibilityIgnoresInvertColors =
+        map["accessibilityIgnoresInvertColors"];
+    options.decelerationRate =
+        IOSUIScrollViewDecelerationRate.fromValue(map["decelerationRate"]);
     options.alwaysBounceVertical = map["alwaysBounceVertical"];
     options.alwaysBounceHorizontal = map["alwaysBounceHorizontal"];
     options.scrollsToTop = map["scrollsToTop"];
@@ -839,6 +891,16 @@ class IOSInAppWebViewOptions
     options.minimumZoomScale = map["minimumZoomScale"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the cross-platform [InAppBrowser] options available.
@@ -881,6 +943,16 @@ class InAppBrowserOptions
     options.hideUrlBar = map["hideUrlBar"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the Android-only [InAppBrowser] options available.
@@ -921,6 +993,16 @@ class AndroidInAppBrowserOptions implements BrowserOptions, AndroidOptions {
     options.progressBar = map["progressBar"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the iOS-only [InAppBrowser] options available.
@@ -987,6 +1069,16 @@ class IOSInAppBrowserOptions implements BrowserOptions, IosOptions {
     options.spinner = map["spinner"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the Android-only [ChromeSafariBrowser] options available.
@@ -1051,6 +1143,16 @@ class AndroidChromeCustomTabsOptions
     options.keepAliveEnabled = map["keepAliveEnabled"];
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }
 
 ///This class represents all the iOS-only [ChromeSafariBrowser] options available.
@@ -1118,4 +1220,14 @@ class IOSSafariOptions implements ChromeSafariBrowserOptions, IosOptions {
         IOSUIModalTransitionStyle.fromValue(map["transitionStyle"]);
     return options;
   }
+
+  @override
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
 }