updated plugin version, added new options to hide/show scrollbars #165,...

updated plugin version, added new options to hide/show scrollbars #165, initial support for DownloadManager in Android and iOS

CHANGELOG.md

+## 1.3.0
+
+- Merge
+- Merge
+- Merge
+- Merge
+- Merge
+- Merge
+- Added `horizontalScrollBarEnabled` and `verticalScrollBarEnabled` options to enable/disable the corresponding scrollbar of the WebView [#165](https://github.com/pichillilorenzo/flutter_inappbrowser/issues/165)
+
+
 ## 1.2.1
 
 - Merge "Add new option to control the contentMode in Android platform" [#101](https://github.com/pichillilorenzo/flutter_inappbrowser/pull/101) (thanks to [DreamBuddy](https://github.com/DreamBuddy))

README.md

@@ -8,7 +8,6 @@
 [![Donate to this project using Patreon](https://img.shields.io/badge/patreon-donate-yellow.svg)](https://www.patreon.com/bePatron?u=9269604)
 
 A Flutter plugin that allows you to add an inline webview or open an in-app browser window.
-This plugin is inspired by the popular [cordova-plugin-inappbrowser](https://github.com/apache/cordova-plugin-inappbrowser)!
 
 ### Requirements
 - Dart sdk: ">=2.1.0-dev.7.1 <3.0.0"

android/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
     package="com.pichillilorenzo.flutter_inappbrowser">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <application>
         <activity android:theme="@style/AppTheme" android:name=".InAppBrowserActivity" android:configChanges="orientation|screenSize"></activity>

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

 package com.pichillilorenzo.flutter_inappbrowser.InAppWebView;
 
+import android.Manifest;
+import android.app.Activity;
+import android.app.DownloadManager;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Picture;
+import android.net.Uri;
 import android.os.Build;
+import android.os.Environment;
 import android.util.AttributeSet;
 import android.util.JsonReader;
 import android.util.JsonToken;
 import android.util.Log;
 import android.webkit.CookieManager;
+import android.webkit.DownloadListener;
+import android.webkit.URLUtil;
 import android.webkit.ValueCallback;
 import android.webkit.WebBackForwardList;
 import android.webkit.WebHistoryItem;
@@ -21,6 +31,7 @@ import com.pichillilorenzo.flutter_inappbrowser.FlutterWebView;
 import com.pichillilorenzo.flutter_inappbrowser.InAppBrowserActivity;
 import com.pichillilorenzo.flutter_inappbrowser.InAppBrowserFlutterPlugin;
 import com.pichillilorenzo.flutter_inappbrowser.JavaScriptBridgeInterface;
+import com.pichillilorenzo.flutter_inappbrowser.RequestPermissionHandler;
 import com.pichillilorenzo.flutter_inappbrowser.Util;
 
 import java.io.ByteArrayOutputStream;
@@ -36,6 +47,8 @@ import io.flutter.plugin.common.PluginRegistry;
 import okhttp3.Cache;
 import okhttp3.OkHttpClient;
 
+import static android.content.Context.DOWNLOAD_SERVICE;
+
 public class InAppWebView extends WebView {
 
   static final String LOG_TAG = "InAppWebView";
@@ -110,6 +123,8 @@ public class InAppWebView extends WebView {
 
   public void prepare() {
 
+    final Activity activity = (inAppBrowserActivity != null) ? inAppBrowserActivity : registrar.activity();
+
     boolean isFromInAppBrowserActivity = inAppBrowserActivity != null;
 
     httpClient = new OkHttpClient().newBuilder().cache(new Cache(getContext().getCacheDir(), okHttpClientCacheSize)).build();
@@ -122,39 +137,43 @@ public class InAppWebView extends WebView {
     inAppWebViewClient = new InAppWebViewClient((isFromInAppBrowserActivity) ? inAppBrowserActivity : flutterWebView);
     setWebViewClient(inAppWebViewClient);
 
-//        final Activity activity = this;
-//
-//        webView.setDownloadListener(new DownloadListener() {
-//            @Override
-//            public void onDownloadStart(final String url, final String userAgent,
-//                                        final String contentDisposition, final String mimetype,
-//                                        final long contentLength) {
-//
-//                RequestPermissionHandler.checkAndRun(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE, RequestPermissionHandler.REQUEST_CODE_WRITE_EXTERNAL_STORAGE, new Runnable(){
-//                    @Override
-//                    public void run(){
-//                        DownloadManager.Request request = new DownloadManager.Request(
-//                                Uri.parse(url));
-//
-//                        final String filename = URLUtil.guessFileName(url, contentDisposition, mimetype);
-//                        request.allowScanningByMediaScanner();
-//                        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!
-//                        request.setVisibleInDownloadsUi(true);
-//                        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, filename);
-//                        DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
-//                        if (dm != null) {
-//                            dm.enqueue(request);
-//                            Toast.makeText(getApplicationContext(), "Downloading File: " + filename, //To notify the Client that the file is being downloaded
-//                                    Toast.LENGTH_LONG).show();
-//                        }
-//                        else {
-//                            Toast.makeText(getApplicationContext(), "Cannot Download File: " + filename, //To notify the Client that the file cannot be downloaded
-//                                    Toast.LENGTH_LONG).show();
-//                        }
-//                    }
-//                });
-//            }
-//        });
+    activity.registerReceiver(onDownloadComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
+
+    setDownloadListener(new DownloadListener() {
+        @Override
+        public void onDownloadStart(final String url, final String userAgent,
+                                    final String contentDisposition, final String mimetype,
+                                    final long contentLength) {
+
+            RequestPermissionHandler.checkAndRun(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE, RequestPermissionHandler.REQUEST_CODE_WRITE_EXTERNAL_STORAGE, new Runnable(){
+                @Override
+                public void run(){
+
+                    Log.e(LOG_TAG, url);
+                    Log.e(LOG_TAG, contentDisposition);
+                    Log.e(LOG_TAG, mimetype);
+
+                    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
+
+                    final String filename = URLUtil.guessFileName(url, contentDisposition, mimetype);
+                    request.allowScanningByMediaScanner();
+                    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!
+                    request.setVisibleInDownloadsUi(true);
+                    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, filename);
+                    DownloadManager dm = (DownloadManager) activity.getSystemService(DOWNLOAD_SERVICE);
+                    if (dm != null) {
+                        dm.enqueue(request);
+                        //Toast.makeText(getApplicationContext(), "Downloading File: " + filename, //To notify the Client that the file is being downloaded
+                        //        Toast.LENGTH_LONG).show();
+                    }
+                    else {
+                        //Toast.makeText(getApplicationContext(), "Cannot Download File: " + filename, //To notify the Client that the file cannot be downloaded
+                        //        Toast.LENGTH_LONG).show();
+                    }
+                }
+            });
+        }
+    });
 
     WebSettings settings = getSettings();
 
@@ -187,6 +206,8 @@ public class InAppWebView extends WebView {
     settings.setUseWideViewPort(options.useWideViewPort);
     settings.setSupportZoom(options.supportZoom);
     settings.setTextZoom(options.textZoom);
+    setVerticalScrollBarEnabled(options.verticalScrollBarEnabled);
+    setHorizontalScrollBarEnabled(options.horizontalScrollBarEnabled);
 
     if (options.transparentBackground) {
       setBackgroundColor(Color.TRANSPARENT);
@@ -205,6 +226,19 @@ public class InAppWebView extends WebView {
     }
   }
 
+  private BroadcastReceiver onDownloadComplete = new BroadcastReceiver() {
+    @Override
+    public void onReceive(Context context, Intent intent) {
+      //Fetching the download id received with the broadcast
+      long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
+      //Checking if the received broadcast is for our enqueued download by matching download id
+      if (1 == id) { // test
+      //if (downloadID == id) {
+        //Toast.makeText(MainActivity.this, "Download Completed", Toast.LENGTH_SHORT).show();
+      }
+    }
+  };
+
   public void loadUrl(String url, MethodChannel.Result result) {
     if (!url.isEmpty()) {
       loadUrl(url);
@@ -367,6 +401,12 @@ public class InAppWebView extends WebView {
     if (newOptionsMap.get("textZoom") != null && options.textZoom != newOptions.textZoom)
       settings.setTextZoom(newOptions.textZoom);
 
+    if (newOptionsMap.get("verticalScrollBarEnabled") != null && options.verticalScrollBarEnabled != newOptions.verticalScrollBarEnabled)
+      setVerticalScrollBarEnabled(newOptions.verticalScrollBarEnabled);
+
+    if (newOptionsMap.get("horizontalScrollBarEnabled") != null && options.horizontalScrollBarEnabled != newOptions.horizontalScrollBarEnabled)
+      setHorizontalScrollBarEnabled(newOptions.horizontalScrollBarEnabled);
+
     if (newOptionsMap.get("transparentBackground") != null && options.transparentBackground != newOptions.transparentBackground) {
       if (newOptions.transparentBackground) {
         setBackgroundColor(Color.TRANSPARENT);
@@ -524,4 +564,11 @@ public class InAppWebView extends WebView {
   private MethodChannel getChannel() {
     return (inAppBrowserActivity != null) ? InAppBrowserFlutterPlugin.channel : flutterWebView.channel;
   }
+
+  @Override
+  public void destroy() {
+    final Activity activity = (inAppBrowserActivity != null) ? inAppBrowserActivity : registrar.activity();
+    activity.unregisterReceiver(onDownloadComplete);
+    super.destroy();
+  }
 }

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

@@ -14,6 +14,8 @@ public class InAppWebViewOptions extends Options {
   public boolean javaScriptCanOpenWindowsAutomatically = false;
   public boolean mediaPlaybackRequiresUserGesture = true;
   public int textZoom = 100;
+  public boolean verticalScrollBarEnabled = true;
+  public boolean horizontalScrollBarEnabled = true;
 
   public boolean clearSessionCache = false;
   public boolean builtInZoomControls = false;

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

@@ -15,6 +15,8 @@ public abstract class RequestPermissionHandler implements ActivityCompat.OnReque
 
     private static Map<Integer, List<Runnable>> actionDictionary = new HashMap<>();
 
+    public static int REQUEST_CODE_WRITE_EXTERNAL_STORAGE = 1;
+
     public static void checkAndRun(Activity activity, String permission, int requestCode, Runnable runnable) {
 
         int permissionCheck = ContextCompat.checkSelfPermission(activity.getApplicationContext(), permission);

example/lib/inline_example.screen.dart

@@ -55,8 +55,8 @@ class _InlineExampleScreenState extends State<InlineExampleScreen> {
               BoxDecoration(border: Border.all(color: Colors.blueAccent)),
           child: InAppWebView(
             //initialUrl: "https://www.youtube.com/embed/M7lc1UVf-VE?playsinline=1",
-            //initialUrl: "https://flutter.dev/",
-            initialFile: "assets/index.html",
+            initialUrl: "https://flutter.dev/",
+            //initialFile: "assets/index.html",
             initialHeaders: {},
             initialOptions: {
               //"mediaPlaybackRequiresUserGesture": false,

ios/Classes/InAppWebView.swift

@@ -82,8 +82,8 @@ window.\(JAVASCRIPT_BRIDGE_NAME).callHandler = function() {
 
 let platformReadyJS = "window.dispatchEvent(new Event('flutterInAppBrowserPlatformReady'));";
 
-public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavigationDelegate, WKScriptMessageHandler {
-    
+public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavigationDelegate, WKScriptMessageHandler, URLSessionDownloadDelegate {
+
     var IABController: InAppBrowserWebViewController?
     var IAWController: FlutterWebViewController?
     var options: InAppWebViewOptions?
@@ -180,6 +180,9 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         
         configuration.preferences.javaScriptEnabled = (options?.javaScriptEnabled)!
         
+        scrollView.showsVerticalScrollIndicator = (options?.verticalScrollBarEnabled)!
+        scrollView.showsHorizontalScrollIndicator = (options?.horizontalScrollBarEnabled)!
+        
         if ((options?.userAgent)! != "") {
             if #available(iOS 9.0, *) {
                 customUserAgent = (options?.userAgent)!
@@ -388,6 +391,13 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             configuration.preferences.javaScriptEnabled = newOptions.javaScriptEnabled
         }
         
+        if newOptionsMap["verticalScrollBarEnabled"] != nil && options?.verticalScrollBarEnabled != newOptions.verticalScrollBarEnabled {
+            scrollView.showsVerticalScrollIndicator = newOptions.verticalScrollBarEnabled
+        }
+        if newOptionsMap["horizontalScrollBarEnabled"] != nil && options?.horizontalScrollBarEnabled != newOptions.horizontalScrollBarEnabled {
+            scrollView.showsHorizontalScrollIndicator = newOptions.horizontalScrollBarEnabled
+        }
+        
         if newOptionsMap["userAgent"] != nil && options?.userAgent != newOptions.userAgent && (newOptions.userAgent != "") {
             if #available(iOS 9.0, *) {
                 customUserAgent = newOptions.userAgent
@@ -514,9 +524,8 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
     public func webView(_ webView: WKWebView,
                  decidePolicyFor navigationAction: WKNavigationAction,
                  decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
-        
+
         if let url = navigationAction.request.url {
-            
             if url.absoluteString != url.absoluteString && (options?.useOnLoadResource)! {
                 WKNavigationMap[url.absoluteString] = [
                     "startTime": currentTimeInMilliSeconds(),
@@ -556,6 +565,17 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             }
         }
         
+        let mimeType = navigationResponse.response.mimeType
+        if let url = navigationResponse.response.url {
+            if mimeType != nil && !mimeType!.starts(with: "text/") {
+                Downloader.load(delegate: self, url: url, completion: { (destinationUrl: URL) in
+                    print(destinationUrl)
+                })
+                decisionHandler(.cancel)
+                return
+            }
+        }
+        
         decisionHandler(.allow)
     }
     
@@ -647,6 +667,20 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         setNeedsLayout()
     }
     
+    public func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
+        
+    }
+    
+    public func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
+        guard
+            let url = downloadTask.originalRequest?.url
+            else {
+                return
+        }
+        let progress = Float(totalBytesWritten) / Float(totalBytesExpectedToWrite)
+        let totalSize = ByteCountFormatter.string(fromByteCount: totalBytesExpectedToWrite, countStyle: .file)
+    }
+    
     public func onLoadStart(url: String) {
         var arguments: [String: Any] = ["url": url]
         if IABController != nil {
@@ -839,3 +873,47 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         return (IABController != nil) ? SwiftFlutterPlugin.channel! : ((IAWController != nil) ? IAWController!.channel! : nil);
     }
 }
+
+class Downloader {
+    class func load(delegate: URLSessionDelegate, url: URL, completion: @escaping (_ destinationUrl: URL) -> ()) {
+        let documentsUrl =  FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).last as! URL
+        let destinationUrl = documentsUrl.appendingPathComponent(url.lastPathComponent)
+        
+        if FileManager.default.fileExists(atPath: destinationUrl.path) {
+            print("file already exists [\(destinationUrl.path)]")
+            //completion(path: destinationUrl.path!, error:nil)
+            return
+        }
+        
+        let sessionConfig = URLSessionConfiguration.default
+        let session = URLSession(configuration: sessionConfig, delegate: delegate, delegateQueue: nil)
+        var request = URLRequest(url: url)
+        request.httpMethod = "GET"
+        
+        let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
+            if let tempLocalUrl = tempLocalUrl, error == nil {
+                // Success
+                if let statusCode = (response as? HTTPURLResponse)?.statusCode {
+                    if statusCode == 200 {
+                        do {
+                            try FileManager.default.moveItem(at: tempLocalUrl, to: destinationUrl)
+                            completion(destinationUrl)
+                        } catch (let writeError) {
+                            print("error writing file \(destinationUrl) : \(writeError)")
+                            //completion(path: destinationUrl.path!, error:nil)
+                        }
+                    } else {
+                        //completion(path: destinationUrl.path!, error:nil)
+                    }
+                } else {
+                    //completion(path: destinationUrl.path!, error:nil)
+                }
+                
+            } else {
+                print("Failure: %@", error?.localizedDescription);
+                //completion(path: destinationUrl.path!, error:nil)
+            }
+        }
+        task.resume()
+    }
+}

ios/Classes/InAppWebViewOptions.swift

@@ -17,6 +17,8 @@ public class InAppWebViewOptions: Options {
     var javaScriptEnabled = true
     var javaScriptCanOpenWindowsAutomatically = false
     var mediaPlaybackRequiresUserGesture = true
+    var verticalScrollBarEnabled = true
+    var horizontalScrollBarEnabled = true
     
     var disallowOverScroll = false
     var enableViewportScale = false

pubspec.yaml

 name: flutter_inappbrowser
-description: A Flutter plugin that allows you to add an inline webview or open an in-app browser window (inspired by the popular cordova-plugin-inappbrowser).
-version: 1.2.1
+description: A Flutter plugin that allows you to add an inline webview or open an in-app browser window.
+version: 1.3.0
 author: Lorenzo Pichilli <pichillilorenzo@gmail.com>
 homepage: https://github.com/pichillilorenzo/flutter_inappbrowser