v0.4.1

CHANGELOG.md

+## 0.4.1
+
+- added `InAppBrowser.takeScreenshot()`
+- added `InAppBrowser.setOptions()`
+- added `InAppBrowser.getOptions()`
+
 ## 0.4.0
 
 - removed `target` parameter to `InAppBrowser.open()` method. To open the url on the system browser, use the `openWithSystemBrowser: true` option
@@ -7,6 +13,7 @@
 - added `InAppBrowser.openWithSystemBrowser` method
 - added `InAppBrowser.openOnLocalhost` method
 - added `InAppBrowser.loadFile` method
+- added `InAppBrowser.isOpened` method
 
 ## 0.3.2
 

README.md

@@ -9,6 +9,14 @@
 A Flutter plugin that allows you to open an in-app browser window.
 This plugin is inspired by the popular [cordova-plugin-inappbrowser](https://github.com/apache/cordova-plugin-inappbrowser)!
 
+### IMPORTANT Note for iOS
+To be able to use this plugin on iOS, you need to create the Flutter App with `flutter create -i swift` (see [flutter/flutter#13422 (comment)](https://github.com/flutter/flutter/issues/13422#issuecomment-392133780)), otherwise, you will get this message:
+```
+=== BUILD TARGET flutter_inappbrowser OF PROJECT Pods WITH CONFIGURATION Debug ===
+The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported value for targets which use Swift. Supported values are: 3.0, 4.0, 4.2. This setting can be set in the build settings editor.
+```
+that is not true! The Swift version that I have used is already a supported value: 4.0.
+
 ## Getting Started
 
 For help getting started with Flutter, view our online
@@ -334,7 +342,7 @@ inAppBrowser.loadUrl(String url, {Map<String, String> headers = const {}});
 
 Loads the given `assetFilePath` with optional `headers` specified as a map from name to value.
 
-To be able to load your local files (assets, js, css, etc.), you need to add them in the `assets` section of the `pubspec.yaml` file, otherwise they cannot be found!
+To be able to load your local files (html, js, css, etc.), you need to add them in the `assets` section of the `pubspec.yaml` file, otherwise they cannot be found!
 
 Example of a `pubspec.yaml` file:
 ```yaml
@@ -493,6 +501,35 @@ Returns `true` if the callback is removed, otherwise `false`.
 inAppBrowser.removeJavaScriptHandler(String handlerName, int index);
 ```
 
+#### Future\<Uint8List\> InAppBrowser.takeScreenshot
+
+Takes a screenshot (in PNG format) of the view's visible viewport and returns a `Uint8List`. Returns `null` if it wasn't be able to take it.
+
+**NOTE for iOS**: available from iOS 11.0+.
+```dart
+inAppBrowser.takeScreenshot();
+```
+
+#### Future\<void\> InAppBrowser.setOptions
+
+Sets the InAppBrowser options with the new `options` and evaluates them.
+```dart
+inAppBrowser.setOptions(Map<String, dynamic> options);
+```
+
+#### Future\<Map\<String, dynamic\>\> InAppBrowser.getOptions
+
+Gets the current InAppBrowser options. Returns `null` if the options are not setted yet.
+```dart
+inAppBrowser.getOptions();
+```
+
+#### bool InAppBrowser.isOpened
+
+Returns `true` if the `InAppBrowser` instance is opened, otherwise `false`.
+```dart
+inAppBrowser.isOpened();
+```
 
 ### `ChromeSafariBrowser` class
 [Chrome Custom Tabs](https://developer.android.com/reference/android/support/customtabs/package-summary) on Android / [SFSafariViewController](https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller) on iOS.

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java

@@ -31,6 +31,7 @@ import android.provider.Browser;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.util.Base64;
 import android.util.JsonReader;
 import android.util.JsonToken;
 import android.webkit.MimeTypeMap;
@@ -247,6 +248,28 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
       case "isHidden":
         result.success(isHidden(uuid));
         break;
+      case "takeScreenshot":
+        result.success(takeScreenshot(uuid));
+        break;
+      case "setOptions":
+        {
+          String optionsType = (String) call.argument("optionsType");
+          switch (optionsType){
+            case "InAppBrowserOptions":
+              InAppBrowserOptions inAppBrowserOptions = new InAppBrowserOptions();
+              HashMap<String, Object> inAppBroeserOptionsMap = (HashMap<String, Object>) call.argument("options");
+              inAppBrowserOptions.parse(inAppBroeserOptionsMap);
+              setOptions(uuid, inAppBrowserOptions, inAppBroeserOptionsMap);
+              break;
+            default:
+              result.error(LOG_TAG, "Options " + optionsType + " not available.", null);
+          }
+        }
+        result.success(true);
+        break;
+      case "getOptions":
+        result.success(getOptions(uuid));
+        break;
       default:
         result.notImplemented();
     }
@@ -580,4 +603,25 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
       result.success(true);
     }
   }
+
+  public byte[] takeScreenshot(String uuid) {
+    WebViewActivity webViewActivity = webViewActivities.get(uuid);
+    if (webViewActivity != null)
+      return webViewActivity.takeScreenshot();
+    return null;
+  }
+
+  public void setOptions(String uuid, InAppBrowserOptions options, HashMap<String, Object> optionsMap) {
+    WebViewActivity webViewActivity = webViewActivities.get(uuid);
+    if (webViewActivity != null)
+      webViewActivity.setOptions(options, optionsMap);
+  }
+
+  public HashMap<String, Object> getOptions(String uuid) {
+    WebViewActivity webViewActivity = webViewActivities.get(uuid);
+    if (webViewActivity != null)
+      return webViewActivity.getOptions();
+    return null;
+  }
+
 }

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/WebViewActivity.java

 package com.pichillilorenzo.flutter_inappbrowser;
 
 import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
 import android.graphics.Color;
+import android.graphics.Picture;
 import android.graphics.drawable.ColorDrawable;
 import android.os.Build;
 import android.support.v7.app.ActionBar;
@@ -12,6 +15,7 @@ import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewGroup;
 import android.webkit.CookieManager;
 import android.webkit.ValueCallback;
 import android.webkit.WebSettings;
@@ -19,6 +23,10 @@ import android.webkit.WebView;
 import android.widget.ProgressBar;
 import android.widget.SearchView;
 
+import java.io.ByteArrayOutputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -31,6 +39,7 @@ public class WebViewActivity extends AppCompatActivity {
   String uuid;
   WebView webView;
   ActionBar actionBar;
+  Menu menu;
   InAppBrowserWebViewClient inAppBrowserWebViewClient;
   InAppBrowserWebChromeClient inAppBrowserWebChromeClient;
   SearchView searchView;
@@ -182,8 +191,12 @@ public class WebViewActivity extends AppCompatActivity {
     else
       settings.setTextZoom(100);
 
-    if (options.progressBar)
-      progressBar = findViewById(R.id.progressBar);
+    progressBar = findViewById(R.id.progressBar);
+
+    if (!options.progressBar)
+      progressBar.setMax(0);
+    else
+      progressBar.setMax(100);
 
     actionBar.setDisplayShowTitleEnabled(!options.hideTitleBar);
 
@@ -199,7 +212,9 @@ public class WebViewActivity extends AppCompatActivity {
   }
 
   @Override
-  public boolean onCreateOptionsMenu(Menu menu) {
+  public boolean onCreateOptionsMenu(Menu m) {
+    menu = m;
+
     MenuInflater inflater = getMenuInflater();
     // Inflate menu to add items to action bar if it is present.
     inflater.inflate(R.menu.menu_main, menu);
@@ -366,9 +381,11 @@ public class WebViewActivity extends AppCompatActivity {
   }
 
   private void clearCache() {
-    webView.clearCache(true);
-    clearCookies();
-    webView.clearFormData();
+    if (webView != null) {
+      webView.clearCache(true);
+      clearCookies();
+      webView.clearFormData();
+    }
   }
 
   public void goBackButtonClicked(MenuItem item) {
@@ -394,4 +411,107 @@ public class WebViewActivity extends AppCompatActivity {
     InAppBrowserFlutterPlugin.close(uuid, null);
   }
 
+  public byte[] takeScreenshot() {
+    if (webView != null) {
+      Picture picture = webView.capturePicture();
+      Bitmap b = Bitmap.createBitmap( webView.getWidth(),
+              webView.getHeight(), Bitmap.Config.ARGB_8888);
+      Canvas c = new Canvas(b);
+
+      picture.draw(c);
+      ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+      b.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
+      try {
+        byteArrayOutputStream.close();
+      } catch (IOException e) {
+        e.printStackTrace();
+      }
+      return byteArrayOutputStream.toByteArray();
+    }
+    return null;
+  }
+
+  public void setOptions(InAppBrowserOptions newOptions, HashMap<String, Object> newOptionsMap) {
+
+    WebSettings settings = webView.getSettings();
+
+    if (newOptionsMap.get("hidden") != null && options.hidden != newOptions.hidden) {
+      if (newOptions.hidden)
+        hide();
+      else
+        show();
+    }
+
+    if (newOptionsMap.get("javaScriptEnabled") != null && options.javaScriptEnabled != newOptions.javaScriptEnabled)
+      settings.setJavaScriptEnabled(newOptions.javaScriptEnabled);
+
+    if (newOptionsMap.get("javaScriptCanOpenWindowsAutomatically") != null && options.javaScriptCanOpenWindowsAutomatically != newOptions.javaScriptCanOpenWindowsAutomatically)
+      settings.setJavaScriptCanOpenWindowsAutomatically(newOptions.javaScriptCanOpenWindowsAutomatically);
+
+    if (newOptionsMap.get("builtInZoomControls") != null && options.builtInZoomControls != newOptions.builtInZoomControls)
+      settings.setBuiltInZoomControls(newOptions.builtInZoomControls);
+
+    if (newOptionsMap.get("safeBrowsingEnabled") != null && options.safeBrowsingEnabled != newOptions.safeBrowsingEnabled && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
+      settings.setSafeBrowsingEnabled(newOptions.safeBrowsingEnabled);
+
+    if (newOptionsMap.get("mediaPlaybackRequiresUserGesture") != null && options.mediaPlaybackRequiresUserGesture != newOptions.mediaPlaybackRequiresUserGesture)
+      settings.setMediaPlaybackRequiresUserGesture(newOptions.mediaPlaybackRequiresUserGesture);
+
+    if (newOptionsMap.get("databaseEnabled") != null && options.databaseEnabled != newOptions.databaseEnabled)
+      settings.setDatabaseEnabled(newOptions.databaseEnabled);
+
+    if (newOptionsMap.get("domStorageEnabled") != null && options.domStorageEnabled != newOptions.domStorageEnabled)
+      settings.setDomStorageEnabled(newOptions.domStorageEnabled);
+
+    if (newOptionsMap.get("userAgent") != null && options.userAgent != newOptions.userAgent && !newOptions.userAgent.isEmpty())
+      settings.setUserAgentString(newOptions.userAgent);
+
+    if (newOptionsMap.get("clearCache") != null && newOptions.clearCache)
+      clearCache();
+    else if (newOptionsMap.get("clearSessionCache") != null && newOptions.clearSessionCache)
+      CookieManager.getInstance().removeSessionCookie();
+
+    if (newOptionsMap.get("useWideViewPort") != null && options.useWideViewPort != newOptions.useWideViewPort)
+      settings.setUseWideViewPort(newOptions.useWideViewPort);
+
+    if (newOptionsMap.get("supportZoom") != null && options.supportZoom != newOptions.supportZoom)
+      settings.setSupportZoom(newOptions.supportZoom);
+
+    if (newOptionsMap.get("progressBar") != null && options.progressBar != newOptions.progressBar && progressBar != null) {
+      if (newOptions.progressBar)
+        progressBar.setMax(0);
+      else
+        progressBar.setMax(100);
+    }
+
+    if (newOptionsMap.get("hideTitleBar") != null && options.hideTitleBar != newOptions.hideTitleBar)
+      actionBar.setDisplayShowTitleEnabled(!newOptions.hideTitleBar);
+
+    if (newOptionsMap.get("toolbarTop") != null && options.toolbarTop != newOptions.toolbarTop) {
+      if (!newOptions.toolbarTop)
+        actionBar.hide();
+      else
+        actionBar.show();
+    }
+
+    if (newOptionsMap.get("toolbarTopBackgroundColor") != null && options.toolbarTopBackgroundColor != newOptions.toolbarTopBackgroundColor && !newOptions.toolbarTopBackgroundColor.isEmpty())
+      actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor(newOptions.toolbarTopBackgroundColor)));
+
+    if (newOptionsMap.get("toolbarTopFixedTitle") != null && options.toolbarTopFixedTitle != newOptions.toolbarTopFixedTitle && !newOptions.toolbarTopFixedTitle.isEmpty())
+      actionBar.setTitle(newOptions.toolbarTopFixedTitle);
+
+    if (newOptionsMap.get("hideUrlBar") != null && options.hideUrlBar != newOptions.hideUrlBar) {
+      if (newOptions.hideUrlBar)
+        menu.findItem(R.id.menu_search).setVisible(false);
+      else
+        menu.findItem(R.id.menu_search).setVisible(true);
+    }
+
+    options = newOptions;
+  }
+
+  public HashMap<String, Object> getOptions() {
+    return (options != null) ? options.getHashMap() : null;
+  }
+
 }

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/chrome_custom_tabs/ChromeCustomTabsActivity.java

@@ -91,4 +91,5 @@ public class ChromeCustomTabsActivity extends Activity {
       InAppBrowserFlutterPlugin.channel.invokeMethod("onChromeSafariBrowserClosed", obj);
     }
   }
+
 }

android/src/main/res/layout/activity_web_view.xml

@@ -2,6 +2,7 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:clickable="true"

example/pubspec.yaml

@@ -25,7 +25,7 @@ dev_dependencies:
     sdk: flutter
 
   flutter_inappbrowser:
-    path: ../
+      path: ../
 
 # For information on the generic Dart part of this file, see the
 # following page: https://www.dartlang.org/tools/pub/pubspec

flutter_inappbrowser.iml

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

ios/Classes/Options.swift

@@ -14,7 +14,7 @@ public class Options: NSObject {
         super.init()
     }
     
-    public func parse(options: [String: Any]) -> Options {
+    func parse(options: [String: Any]) -> Options {
         for (key, value) in options {
             if self.responds(to: Selector(key)) {
                 self.setValue(value, forKey: key)
@@ -22,5 +22,20 @@ public class Options: NSObject {
         }
         return self
     }
+    
+    func getHashMap() -> [String: Any] {
+        var options: [String: Any] = [:]
+        var counts = UInt32();
+        let properties = class_copyPropertyList(object_getClass(self), &counts);
+        for i in 0..<counts {
+            let property = properties?.advanced(by: Int(i)).pointee;
+            
+            let cName = property_getName(property!);
+            let name = String(cString: cName)
+            
+            options[name] = self.value(forKey: name)
+        }
+        free(properties)
+        return options
+    }
 }
-

ios/Classes/SwiftFlutterPlugin.swift

@@ -59,7 +59,7 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
     
     public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
         let arguments = call.arguments as? NSDictionary
-        let uuid: String = (arguments!["uuid"] as? String)!
+        let uuid: String = arguments!["uuid"] as! String
 
         switch call.method {
             case "open":
@@ -151,6 +151,33 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                 self.injectStyleFile(uuid: uuid, arguments: arguments!, result: nil)
                 result(true)
                 break
+            case "takeScreenshot":
+                if let webViewController = self.webViewControllers[uuid] {
+                    webViewController?.takeScreenshot(completionHandler: { (screenshot) -> Void in
+                        result(screenshot)
+                    })
+                }
+                else {
+                    result(nil)
+                }
+                break
+            case "setOptions":
+                let optionsType = arguments!["optionsType"] as! String;
+                switch (optionsType){
+                    case "InAppBrowserOptions":
+                        let inAppBrowserOptions = InAppBrowserOptions();
+                        let inAppBroeserOptionsMap = arguments!["options"] as! [String: Any];
+                        inAppBrowserOptions.parse(options: inAppBroeserOptionsMap);
+                        self.setOptions(uuid: uuid, options: inAppBrowserOptions, optionsMap: inAppBroeserOptionsMap);
+                        break;
+                    default:
+                        result(FlutterError(code: "InAppBrowserFlutterPlugin", message: "Options " + optionsType + " not available.", details: nil))
+                }
+                result(true)
+                break
+            case "getOptions":
+                result(self.getOptions(uuid: uuid))
+                break
             default:
                 result(FlutterMethodNotImplemented)
                 break
@@ -594,4 +621,17 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
         }
     }
     
+    func setOptions(uuid: String, options: InAppBrowserOptions, optionsMap: [String: Any]) {
+        if let webViewController = self.webViewControllers[uuid] {
+            webViewController!.setOptions(newOptions: options, newOptionsMap: optionsMap)
+        }
+    }
+    
+    func getOptions(uuid: String) -> [String: Any]? {
+        if let webViewController = self.webViewControllers[uuid] {
+            return webViewController!.getOptions()
+        }
+        return nil
+    }
+    
 }

ios/Storyboards/WebView.storyboard

@@ -92,7 +92,9 @@
                         <outlet property="shareButton" destination="skL-Lw-jYB" id="8hu-WC-OM0"/>
                         <outlet property="spinner" destination="HWt-17-FMf" id="c2Y-Tb-XfA"/>
                         <outlet property="toolbarBottom" destination="8Pf-5R-cFf" id="Og7-Xw-2sq"/>
+                        <outlet property="toolbarBottom_TopToWebViewBottomConstraint" destination="KeI-jL-Qoi" id="jKQ-OC-jpD"/>
                         <outlet property="toolbarTop" destination="vlz-kT-71x" id="WgC-80-Z28"/>
+                        <outlet property="toolbarTop_BottomToWebViewTopConstraint" destination="Sjd-dV-din" id="vkO-Yu-xaE"/>
                         <outlet property="urlField" destination="sy2-Vx-Cxd" id="MCW-lJ-Ehl"/>
                         <outlet property="webView" destination="gA9-n8-qaQ" id="7JE-lp-bwe"/>
                     </connections>

lib/flutter_inappbrowser.dart

@@ -579,7 +579,38 @@ class InAppBrowser {
 
   }
 
-  ///Returns `true` if the browser is opened, otherwise `false`.
+  ///Takes a screenshot (in PNG format) of the WebView's visible viewport and returns a `Uint8List`. Returns `null` if it wasn't be able to take it.
+  ///
+  ///**NOTE for iOS**: available from iOS 11.0+.
+  Future<Uint8List> takeScreenshot() async {
+    this._throwIsNotOpened();
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('uuid', () => uuid);
+    return await _ChannelManager.channel.invokeMethod('takeScreenshot', args);
+  }
+
+  ///Sets the [InAppBrowser] options with the new [options] and evaluates them.
+  Future<void> setOptions(Map<String, dynamic> options) async {
+    this._throwIsNotOpened();
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('uuid', () => uuid);
+    args.putIfAbsent('options', () => options);
+    args.putIfAbsent('optionsType', () => "InAppBrowserOptions");
+    await _ChannelManager.channel.invokeMethod('setOptions', args);
+  }
+
+  ///Gets the current [InAppBrowser] options. Returns `null` if the options are not setted yet.
+  Future<Map<String, dynamic>> getOptions() async {
+    this._throwIsNotOpened();
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('uuid', () => uuid);
+    args.putIfAbsent('optionsType', () => "InAppBrowserOptions");
+    Map<dynamic, dynamic> options = await _ChannelManager.channel.invokeMethod('getOptions', args);
+    options = options.cast<String, dynamic>();
+    return options;
+  }
+
+  ///Returns `true` if the [InAppBrowser] instance is opened, otherwise `false`.
   bool isOpened() {
     return this._isOpened;
   }

pubspec.yaml

 name: flutter_inappbrowser
 description: A Flutter plugin that allows you to open an in-app browser window. (inspired by the popular cordova-plugin-inappbrowser).
-version: 0.4.0
+version: 0.4.1
 author: Lorenzo Pichilli <pichillilorenzo@gmail.com>
 homepage: https://github.com/pichillilorenzo/flutter_inappbrowser