Andrei Popescu | 6fa2958 | 2009-06-19 14:54:09 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.webkit; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.net.Uri; |
| 21 | import android.os.Bundle; |
| 22 | import android.os.Handler; |
| 23 | import android.os.Looper; |
| 24 | import android.os.Message; |
| 25 | import android.util.Log; |
| 26 | import android.view.View; |
| 27 | import android.widget.MediaController; |
| 28 | import android.widget.VideoView; |
| 29 | |
| 30 | import java.util.HashMap; |
| 31 | |
| 32 | /** |
| 33 | * <p>A View that displays Videos. Instances of this class |
| 34 | * are created on the WebCore thread. However, their code |
| 35 | * executes on the UI thread. Right now there is only one |
| 36 | * such view for fullscreen video rendering. |
| 37 | * |
| 38 | */ |
| 39 | class HTML5VideoViewProxy extends Handler { |
| 40 | // Logging tag. |
| 41 | private static final String LOGTAG = "HTML5VideoViewProxy"; |
| 42 | |
| 43 | // Message Ids |
| 44 | private static final int INIT = 100; |
| 45 | private static final int PLAY = 101; |
| 46 | |
| 47 | // The singleton instance. |
| 48 | private static HTML5VideoViewProxy sInstance; |
| 49 | // The VideoView driven via this proxy. |
| 50 | private VideoView mVideoView; |
| 51 | // The context object used to initialize the VideoView and the |
| 52 | // MediaController. |
| 53 | private Context mContext; |
| 54 | |
| 55 | /** |
| 56 | * Private constructor. |
| 57 | * @param context is the application context. |
| 58 | */ |
| 59 | private HTML5VideoViewProxy(Context context) { |
| 60 | // This handler is for the main (UI) thread. |
| 61 | super(Looper.getMainLooper()); |
| 62 | // Save the context object. |
| 63 | mContext = context; |
| 64 | // Send a message to the UI thread to create the VideoView. |
| 65 | // This need to be done on the UI thread, or else the |
| 66 | // event Handlers used by the VideoView and MediaController |
| 67 | // will be attached to the wrong thread. |
| 68 | Message message = obtainMessage(INIT); |
| 69 | sendMessage(message); |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public void handleMessage(Message msg) { |
| 74 | // This executes on the UI thread. |
| 75 | switch (msg.what) { |
| 76 | case INIT: |
| 77 | // Create the video view and set a default controller. |
| 78 | mVideoView = new VideoView(mContext); |
| 79 | mVideoView.setMediaController(new MediaController(mContext)); |
| 80 | break; |
| 81 | case PLAY: |
| 82 | // Check if the fullscreen video view is currently playing. |
| 83 | // If it is, ignore the message. |
| 84 | if (!mVideoView.isPlaying()) { |
| 85 | HashMap<String, Object> map = |
| 86 | (HashMap<String, Object>) msg.obj; |
| 87 | String url = (String) map.get("url"); |
| 88 | WebView webview = (WebView) map.get("webview"); |
| 89 | WebChromeClient client = webview.getWebChromeClient(); |
| 90 | if (client != null) { |
| 91 | mVideoView.setVideoURI(Uri.parse(url)); |
| 92 | mVideoView.start(); |
| 93 | client.onShowCustomView(mVideoView); |
| 94 | } |
| 95 | } |
| 96 | break; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Play a video stream. |
| 102 | * @param url is the URL of the video stream. |
| 103 | * @param webview is the WebViewCore that is requesting the playback. |
| 104 | */ |
| 105 | public void play(String url, WebViewCore webviewCore) { |
| 106 | // We need to know the webview that is requesting the playback. |
| 107 | Message message = obtainMessage(PLAY); |
| 108 | HashMap<String, Object> map = new HashMap(); |
| 109 | map.put("url", url); |
| 110 | map.put("webview", webviewCore.getWebView()); |
| 111 | message.obj = map; |
| 112 | sendMessage(message); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * The factory for HTML5VideoViewProxy instances. Right now, |
| 117 | * it only produces a singleton. |
| 118 | * @param webViewCore is the WebViewCore that is requesting the proxy. |
| 119 | * |
| 120 | * @return the HTML5VideoViewProxy singleton. |
| 121 | */ |
| 122 | public static HTML5VideoViewProxy getInstance(WebViewCore webViewCore) { |
| 123 | if (sInstance == null) { |
| 124 | sInstance = new HTML5VideoViewProxy(webViewCore.getWebView().getContext()); |
| 125 | } |
| 126 | return sInstance; |
| 127 | } |
| 128 | } |