MediaRouteControllerDialog.java revision 92badabc6a274e3bf8ea2a0072e8a6371f252722 
1/*
2 * Copyright (C) 2013 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
17package android.support.v7.app;
18
19import android.app.Dialog;
20import android.content.Context;
21import android.content.IntentSender;
22import android.content.IntentSender.SendIntentException;
23import android.graphics.drawable.Drawable;
24import android.os.Bundle;
25import android.os.RemoteException;
26import android.support.v4.media.MediaDescriptionCompat;
27import android.support.v4.media.MediaMetadataCompat;
28import android.support.v4.media.session.MediaControllerCompat;
29import android.support.v4.media.session.MediaSessionCompat;
30import android.support.v4.media.session.PlaybackStateCompat;
31import android.support.v7.media.MediaRouteSelector;
32import android.support.v7.media.MediaRouter;
33import android.support.v7.mediarouter.R;
34import android.text.TextUtils;
35import android.util.Log;
36import android.view.KeyEvent;
37import android.view.View;
38import android.view.Window;
39import android.widget.Button;
40import android.widget.FrameLayout;
41import android.widget.ImageButton;
42import android.widget.ImageView;
43import android.widget.TextView;
44
45/**
46 * This class implements the route controller dialog for {@link MediaRouter}.
47 * <p>
48 * This dialog allows the user to control or disconnect from the currently selected route.
49 * </p>
50 *
51 * @see MediaRouteButton
52 * @see MediaRouteActionProvider
53 */
54public class MediaRouteControllerDialog extends Dialog {
55    private static final String TAG = "MediaRouteControllerDialog";
56
57    private final MediaRouter mRouter;
58    private final MediaRouterCallback mCallback;
59    private final MediaRouter.RouteInfo mRoute;
60
61    private boolean mCreated;
62    private Drawable mMediaRouteConnectingDrawable;
63    private Drawable mMediaRouteOnDrawable;
64    private Drawable mCurrentIconDrawable;
65    private Drawable mSettingsDrawable;
66
67    private View mControlView;
68
69    private Button mDisconnectButton;
70    private Button mStopCastingButton;
71    private ImageButton mPlayPauseButton;
72    private ImageButton mSettingsButton;
73
74    private ImageView mArtView;
75    private TextView mTitleView;
76    private TextView mSubtitleView;
77    private TextView mRouteNameView;
78    private View mTitlesWrapper;
79
80    private MediaControllerCompat mMediaController;
81    private MediaControllerCallback mControllerCallback;
82    private PlaybackStateCompat mState;
83    private MediaDescriptionCompat mDescription;
84
85
86    public MediaRouteControllerDialog(Context context) {
87        this(context, 0);
88    }
89
90    public MediaRouteControllerDialog(Context context, int theme) {
91        super(MediaRouterThemeHelper.createThemedContext(context), theme);
92        context = getContext();
93
94        mControllerCallback = new MediaControllerCallback();
95        mRouter = MediaRouter.getInstance(context);
96        mCallback = new MediaRouterCallback();
97        mRoute = mRouter.getSelectedRoute();
98    }
99
100    /**
101     * Gets the route that this dialog is controlling.
102     */
103    public MediaRouter.RouteInfo getRoute() {
104        return mRoute;
105    }
106
107    /**
108     * Provides the subclass an opportunity to create a view that will
109     * be included within the body of the dialog to offer additional media controls
110     * for the currently playing content.
111     *
112     * @param savedInstanceState The dialog's saved instance state.
113     * @return The media control view, or null if none.
114     */
115    public View onCreateMediaControlView(Bundle savedInstanceState) {
116        return null;
117    }
118
119    /**
120     * Gets the media control view that was created by {@link #onCreateMediaControlView(Bundle)}.
121     *
122     * @return The media control view, or null if none.
123     */
124    public View getMediaControlView() {
125        return mControlView;
126    }
127
128    /**
129     * Set the session to use for metadata and transport controls. The dialog
130     * will listen to changes on this session and update the UI automatically in
131     * response to changes.
132     *
133     * @param sessionToken The token for the session to use.
134     */
135    public void setMediaSession(MediaSessionCompat.Token sessionToken) {
136        if (mMediaController != null) {
137            mMediaController.unregisterCallback(mControllerCallback);
138            mMediaController = null;
139        }
140        if (sessionToken == null) {
141            return;
142        }
143        try {
144            mMediaController = new MediaControllerCompat(getContext(), sessionToken);
145        } catch (RemoteException e) {
146            Log.e(TAG, "Error creating media controller in setMediaSession.", e);
147        }
148        if (mMediaController != null) {
149            mMediaController.registerCallback(mControllerCallback);
150        }
151        MediaMetadataCompat metadata = mMediaController == null ? null
152                : mMediaController.getMetadata();
153        mDescription = metadata == null ? null : metadata.getDescription();
154        mState = mMediaController == null ? null : mMediaController.getPlaybackState();
155        update();
156    }
157
158    /**
159     * Gets the description being used by the default UI.
160     *
161     * @return The current description.
162     */
163    public MediaSessionCompat.Token getMediaSession() {
164        return mMediaController == null ? null : mMediaController.getSessionToken();
165    }
166
167    @Override
168    protected void onCreate(Bundle savedInstanceState) {
169        super.onCreate(savedInstanceState);
170
171        getWindow().requestFeature(Window.FEATURE_NO_TITLE);
172
173        setContentView(R.layout.mr_media_route_controller_material_dialog_b);
174
175        ClickListener listener = new ClickListener();
176
177        mDisconnectButton = (Button) findViewById(R.id.disconnect);
178        mDisconnectButton.setOnClickListener(listener);
179
180        mStopCastingButton = (Button) findViewById(R.id.stop);
181        mStopCastingButton.setOnClickListener(listener);
182
183        mSettingsButton = (ImageButton) findViewById(R.id.settings);
184        mSettingsButton.setOnClickListener(listener);
185
186        mArtView = (ImageView) findViewById(R.id.art);
187        mTitleView = (TextView) findViewById(R.id.title);
188        mSubtitleView = (TextView) findViewById(R.id.subtitle);
189        mTitlesWrapper = findViewById(R.id.text_wrapper);
190        mPlayPauseButton = (ImageButton) findViewById(R.id.play_pause);
191        mPlayPauseButton.setOnClickListener(listener);
192        mRouteNameView = (TextView) findViewById(R.id.route_name);
193
194        mCreated = true;
195        if (update()) {
196            mControlView = onCreateMediaControlView(savedInstanceState);
197            FrameLayout controlFrame =
198                    (FrameLayout)findViewById(R.id.media_route_control_frame);
199            if (mControlView != null) {
200                controlFrame.findViewById(R.id.default_control_frame).setVisibility(View.GONE);
201                controlFrame.addView(mControlView);
202            }
203        }
204    }
205
206    @Override
207    public void onAttachedToWindow() {
208        super.onAttachedToWindow();
209
210        mRouter.addCallback(MediaRouteSelector.EMPTY, mCallback,
211                MediaRouter.CALLBACK_FLAG_UNFILTERED_EVENTS);
212        update();
213    }
214
215    @Override
216    public void onDetachedFromWindow() {
217        mRouter.removeCallback(mCallback);
218
219        super.onDetachedFromWindow();
220    }
221
222    @Override
223    public boolean onKeyDown(int keyCode, KeyEvent event) {
224        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
225                || keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
226            mRoute.requestUpdateVolume(keyCode == KeyEvent.KEYCODE_VOLUME_DOWN ? -1 : 1);
227            return true;
228        }
229        return super.onKeyDown(keyCode, event);
230    }
231
232    @Override
233    public boolean onKeyUp(int keyCode, KeyEvent event) {
234        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
235                || keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
236            return true;
237        }
238        return super.onKeyUp(keyCode, event);
239    }
240
241    private boolean update() {
242        if (!mRoute.isSelected() || mRoute.isDefault()) {
243            dismiss();
244            return false;
245        }
246        if (!mCreated) {
247            return false;
248        }
249
250        mRouteNameView.setText(mRoute.getName());
251
252        if (mRoute.canDisconnect()) {
253            mDisconnectButton.setVisibility(View.VISIBLE);
254        } else {
255            mDisconnectButton.setVisibility(View.GONE);
256        }
257
258        if (mRoute.getSettingsIntent() != null) {
259            mSettingsButton.setVisibility(View.VISIBLE);
260        } else {
261            mSettingsButton.setVisibility(View.GONE);
262        }
263
264        if (mControlView == null) {
265            if (mDescription != null) {
266                if (mDescription.getIconBitmap() != null) {
267                    mArtView.setImageBitmap(mDescription.getIconBitmap());
268                    mArtView.setVisibility(View.VISIBLE);
269                } else if (mDescription.getIconUri() != null) {
270                    // TODO replace with background load of icon
271                    mArtView.setImageURI(mDescription.getIconUri());
272                    mArtView.setVisibility(View.VISIBLE);
273                } else {
274                    mArtView.setImageDrawable(null);
275                    mArtView.setVisibility(View.GONE);
276                }
277
278                boolean haveText = false;
279                CharSequence text = mDescription.getTitle();
280                if (!TextUtils.isEmpty(text)) {
281                    mTitleView.setText(text);
282                    haveText = true;
283                } else {
284                    mTitleView.setText(null);
285                    mTitleView.setVisibility(View.GONE);
286                }
287                text = mDescription.getSubtitle();
288                if (!TextUtils.isEmpty(text)) {
289                    mSubtitleView.setText(mDescription.getSubtitle());
290                    haveText = true;
291                } else {
292                    mSubtitleView.setText(null);
293                    mSubtitleView.setVisibility(View.GONE);
294                }
295                if (!haveText) {
296                    mTitlesWrapper.setVisibility(View.GONE);
297                }
298            } else {
299                mArtView.setVisibility(View.GONE);
300                mTitlesWrapper.setVisibility(View.GONE);
301            }
302            if (mState != null) {
303                boolean isPlaying = mState.getState() == PlaybackStateCompat.STATE_BUFFERING
304                        || mState.getState() == PlaybackStateCompat.STATE_PLAYING;
305                boolean supportsPlay = (mState.getActions() & (PlaybackStateCompat.ACTION_PLAY
306                        | PlaybackStateCompat.ACTION_PLAY_PAUSE)) != 0;
307                boolean supportsPause = (mState.getActions() & (PlaybackStateCompat.ACTION_PAUSE
308                                | PlaybackStateCompat.ACTION_PLAY_PAUSE)) != 0;
309                if (isPlaying && supportsPause) {
310                    mPlayPauseButton.setVisibility(View.VISIBLE);
311                    mPlayPauseButton.setImageResource(MediaRouterThemeHelper.getThemeResource(
312                            getContext(), R.attr.mediaRoutePauseDrawable));
313                    mPlayPauseButton.setContentDescription(getContext().getResources()
314                            .getText(R.string.mr_media_route_controller_pause));
315                } else if (!isPlaying && supportsPlay) {
316                    mPlayPauseButton.setVisibility(View.VISIBLE);
317                    mPlayPauseButton.setImageResource(MediaRouterThemeHelper.getThemeResource(
318                            getContext(), R.attr.mediaRoutePlayDrawable));
319                    mPlayPauseButton.setContentDescription(getContext().getResources()
320                            .getText(R.string.mr_media_route_controller_play));
321                } else {
322                    mPlayPauseButton.setVisibility(View.GONE);
323                }
324            } else {
325                mPlayPauseButton.setVisibility(View.GONE);
326            }
327        }
328        return true;
329    }
330
331    private Drawable getIconDrawable() {
332        if (mRoute.isConnecting()) {
333            if (mMediaRouteConnectingDrawable == null) {
334                mMediaRouteConnectingDrawable = MediaRouterThemeHelper.getThemeDrawable(
335                        getContext(), R.attr.mediaRouteConnectingDrawable);
336            }
337            return mMediaRouteConnectingDrawable;
338        } else {
339            if (mMediaRouteOnDrawable == null) {
340                mMediaRouteOnDrawable = MediaRouterThemeHelper.getThemeDrawable(
341                        getContext(), R.attr.mediaRouteOnDrawable);
342            }
343            return mMediaRouteOnDrawable;
344        }
345    }
346
347    private final class MediaRouterCallback extends MediaRouter.Callback {
348        @Override
349        public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) {
350            update();
351        }
352
353        @Override
354        public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
355            update();
356        }
357
358        @Override
359        public void onRouteVolumeChanged(MediaRouter router, MediaRouter.RouteInfo route) {
360            if (route == mRoute) {
361            }
362        }
363    }
364
365    private final class MediaControllerCallback extends MediaControllerCompat.Callback {
366        @Override
367        public void onSessionDestroyed() {
368            if (mMediaController != null) {
369                mMediaController.unregisterCallback(mControllerCallback);
370                mMediaController = null;
371            }
372        }
373
374        @Override
375        public void onPlaybackStateChanged(PlaybackStateCompat state) {
376            mState = state;
377            update();
378        }
379
380        @Override
381        public void onMetadataChanged(MediaMetadataCompat metadata) {
382            mDescription = metadata == null ? null : metadata.getDescription();
383            update();
384        }
385    }
386
387    private final class ClickListener implements View.OnClickListener {
388        @Override
389        public void onClick(View v) {
390            int id = v.getId();
391            if (id == R.id.stop || id == R.id.disconnect) {
392                if (mRoute.isSelected()) {
393                    mRouter.unselect(id == R.id.stop ?
394                            MediaRouter.UNSELECT_REASON_STOPPED :
395                            MediaRouter.UNSELECT_REASON_DISCONNECTED);
396                }
397                dismiss();
398            } else if (id == R.id.play_pause) {
399                if (mMediaController != null && mState != null) {
400                    if (mState.getState() == PlaybackStateCompat.STATE_PLAYING) {
401                        mMediaController.getTransportControls().pause();
402                    } else {
403                        mMediaController.getTransportControls().play();
404                    }
405                }
406            } else if (id == R.id.settings) {
407                IntentSender is = mRoute.getSettingsIntent();
408                if (is != null) {
409                    try {
410                        is.sendIntent(null, 0, null, null, null);
411                        dismiss();
412                    } catch (Exception e) {
413                        Log.e(TAG, "Error opening route settings.", e);
414                    }
415                }
416            }
417        }
418    }
419}
420