PlaybackControlHelper.java revision b7087e036a48f5a3db28d02ff7f9b97fbbc46c4f 
1/*
2 * Copyright (C) 2015 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 com.example.android.leanback;
18
19import android.content.Context;
20import android.graphics.drawable.Drawable;
21import android.os.Handler;
22import android.support.v17.leanback.app.PlaybackControlGlue;
23import android.support.v17.leanback.widget.Action;
24import android.support.v17.leanback.widget.ArrayObjectAdapter;
25import android.support.v17.leanback.widget.ControlButtonPresenterSelector;
26import android.support.v17.leanback.widget.PlaybackControlsRow;
27import android.support.v17.leanback.widget.PlaybackControlsRowPresenter;
28import android.support.v17.leanback.widget.PresenterSelector;
29import android.support.v17.leanback.widget.SparseArrayObjectAdapter;
30import android.view.KeyEvent;
31import android.view.View;
32import android.widget.Toast;
33
34abstract class PlaybackControlHelper extends PlaybackControlGlue {
35    /**
36     * Change the location of the thumbs up/down controls
37     */
38    private static final boolean THUMBS_PRIMARY = true;
39
40    private static final String FAUX_TITLE = "A short song of silence";
41    private static final String FAUX_SUBTITLE = "2014";
42    private static final int FAUX_DURATION = 33 * 1000;
43
44    // These should match the playback service FF behavior
45    private static int[] sFastForwardSpeeds = { 2, 3, 4, 5 };
46
47    private boolean mIsPlaying;
48    private int mSpeed = PlaybackControlGlue.PLAYBACK_SPEED_PAUSED;
49    private long mStartTime;
50    private long mStartPosition = 0;
51
52    private PlaybackControlsRow.RepeatAction mRepeatAction;
53    private PlaybackControlsRow.ThumbsUpAction mThumbsUpAction;
54    private PlaybackControlsRow.ThumbsDownAction mThumbsDownAction;
55    private PlaybackControlsRow.PictureInPictureAction mPipAction;
56
57    private Handler mHandler = new Handler();
58    private final Runnable mUpdateProgressRunnable = new Runnable() {
59        @Override
60        public void run() {
61            updateProgress();
62            mHandler.postDelayed(this, getUpdatePeriod());
63        }
64    };
65
66    public PlaybackControlHelper(Context context, PlaybackGlueHost host) {
67        super(context, host, sFastForwardSpeeds, sFastForwardSpeeds);
68        mThumbsUpAction = new PlaybackControlsRow.ThumbsUpAction(context);
69        mThumbsUpAction.setIndex(PlaybackControlsRow.ThumbsUpAction.OUTLINE);
70        mThumbsDownAction = new PlaybackControlsRow.ThumbsDownAction(context);
71        mThumbsDownAction.setIndex(PlaybackControlsRow.ThumbsDownAction.OUTLINE);
72        mRepeatAction = new PlaybackControlsRow.RepeatAction(context);
73        mPipAction = new PlaybackControlsRow.PictureInPictureAction(context);
74    }
75
76    @Override
77    public PlaybackControlsRowPresenter createControlsRowAndPresenter() {
78        PlaybackControlsRowPresenter presenter = super.createControlsRowAndPresenter();
79
80        ArrayObjectAdapter adapter = new ArrayObjectAdapter(new ControlButtonPresenterSelector());
81        getControlsRow().setSecondaryActionsAdapter(adapter);
82        if (!THUMBS_PRIMARY) {
83            adapter.add(mThumbsDownAction);
84        }
85        if (android.os.Build.VERSION.SDK_INT > 23) {
86            adapter.add(mPipAction);
87        }
88        adapter.add(mRepeatAction);
89        if (!THUMBS_PRIMARY) {
90            adapter.add(mThumbsUpAction);
91        }
92
93        return presenter;
94    }
95
96    @Override
97    protected SparseArrayObjectAdapter createPrimaryActionsAdapter(
98            PresenterSelector presenterSelector) {
99        SparseArrayObjectAdapter adapter = new SparseArrayObjectAdapter(presenterSelector);
100        if (THUMBS_PRIMARY) {
101            adapter.set(PlaybackControlGlue.ACTION_CUSTOM_LEFT_FIRST, mThumbsUpAction);
102            adapter.set(PlaybackControlGlue.ACTION_CUSTOM_RIGHT_FIRST, mThumbsDownAction);
103        }
104        return adapter;
105    }
106
107    @Override
108    public void onActionClicked(Action action) {
109        if (shouldDispatchAction(action)) {
110            dispatchAction(action);
111            return;
112        }
113        super.onActionClicked(action);
114    }
115
116    @Override
117    public boolean onKey(View view, int keyCode, KeyEvent keyEvent) {
118        if (keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
119            Action action = getControlsRow().getActionForKeyCode(keyEvent.getKeyCode());
120            if (shouldDispatchAction(action)) {
121                dispatchAction(action);
122                return true;
123            }
124        }
125        return super.onKey(view, keyCode, keyEvent);
126    }
127
128    private boolean shouldDispatchAction(Action action) {
129        return action == mRepeatAction || action == mThumbsUpAction || action == mThumbsDownAction;
130    }
131
132    private void dispatchAction(Action action) {
133        Toast.makeText(getContext(), action.toString(), Toast.LENGTH_SHORT).show();
134        PlaybackControlsRow.MultiAction multiAction = (PlaybackControlsRow.MultiAction) action;
135        multiAction.nextIndex();
136        notifyActionChanged(multiAction);
137    }
138
139    private void notifyActionChanged(PlaybackControlsRow.MultiAction action) {
140        int index;
141        index = getPrimaryActionsAdapter().indexOf(action);
142        if (index >= 0) {
143            getPrimaryActionsAdapter().notifyArrayItemRangeChanged(index, 1);
144        } else {
145            index = getSecondaryActionsAdapter().indexOf(action);
146            if (index >= 0) {
147                getSecondaryActionsAdapter().notifyArrayItemRangeChanged(index, 1);
148            }
149        }
150    }
151
152    private SparseArrayObjectAdapter getPrimaryActionsAdapter() {
153        return (SparseArrayObjectAdapter) getControlsRow().getPrimaryActionsAdapter();
154    }
155
156    private ArrayObjectAdapter getSecondaryActionsAdapter() {
157        return (ArrayObjectAdapter) getControlsRow().getSecondaryActionsAdapter();
158    }
159
160    @Override
161    public boolean hasValidMedia() {
162        return true;
163    }
164
165    @Override
166    public boolean isMediaPlaying() {
167        return mIsPlaying;
168    }
169
170    @Override
171    public CharSequence getMediaTitle() {
172        return FAUX_TITLE;
173    }
174
175    @Override
176    public CharSequence getMediaSubtitle() {
177        return FAUX_SUBTITLE;
178    }
179
180    @Override
181    public int getMediaDuration() {
182        return FAUX_DURATION;
183    }
184
185    @Override
186    public Drawable getMediaArt() {
187        return null;
188    }
189
190    @Override
191    public long getSupportedActions() {
192        return PlaybackControlGlue.ACTION_PLAY_PAUSE |
193                PlaybackControlGlue.ACTION_FAST_FORWARD |
194                PlaybackControlGlue.ACTION_REWIND;
195    }
196
197    @Override
198    public int getCurrentSpeedId() {
199        return mSpeed;
200    }
201
202    @Override
203    public int getCurrentPosition() {
204        int speed;
205        if (mSpeed == PlaybackControlGlue.PLAYBACK_SPEED_PAUSED) {
206            speed = 0;
207        } else if (mSpeed == PlaybackControlGlue.PLAYBACK_SPEED_NORMAL) {
208            speed = 1;
209        } else if (mSpeed >= PlaybackControlGlue.PLAYBACK_SPEED_FAST_L0) {
210            int index = mSpeed - PlaybackControlGlue.PLAYBACK_SPEED_FAST_L0;
211            speed = getFastForwardSpeeds()[index];
212        } else if (mSpeed <= -PlaybackControlGlue.PLAYBACK_SPEED_FAST_L0) {
213            int index = -mSpeed - PlaybackControlGlue.PLAYBACK_SPEED_FAST_L0;
214            speed = -getRewindSpeeds()[index];
215        } else {
216            return -1;
217        }
218        long position = mStartPosition +
219                (System.currentTimeMillis() - mStartTime) * speed;
220        if (position > getMediaDuration()) {
221            position = getMediaDuration();
222            onPlaybackComplete(true);
223        } else if (position < 0) {
224            position = 0;
225            onPlaybackComplete(false);
226        }
227        return (int) position;
228    }
229
230    void onPlaybackComplete(final boolean ended) {
231        mHandler.post(new Runnable() {
232            @Override
233            public void run() {
234                if (mRepeatAction.getIndex() == PlaybackControlsRow.RepeatAction.NONE) {
235                    pausePlayback();
236                } else {
237                    startPlayback(PlaybackControlGlue.PLAYBACK_SPEED_NORMAL);
238                }
239                mStartPosition = 0;
240                onStateChanged();
241            }
242        });
243    }
244
245    @Override
246    protected void startPlayback(int speed) {
247        if (speed == mSpeed) {
248            return;
249        }
250        mStartPosition = getCurrentPosition();
251        mSpeed = speed;
252        mIsPlaying = true;
253        mStartTime = System.currentTimeMillis();
254    }
255
256    @Override
257    protected void pausePlayback() {
258        if (mSpeed == PlaybackControlGlue.PLAYBACK_SPEED_PAUSED) {
259            return;
260        }
261        mStartPosition = getCurrentPosition();
262        mSpeed = PlaybackControlGlue.PLAYBACK_SPEED_PAUSED;
263        mIsPlaying = false;
264    }
265
266    @Override
267    protected void skipToNext() {
268        // Not supported
269    }
270
271    @Override
272    protected void skipToPrevious() {
273        // Not supported
274    }
275
276    @Override
277    public void enableProgressUpdating(boolean enable) {
278        mHandler.removeCallbacks(mUpdateProgressRunnable);
279        if (enable) {
280            mUpdateProgressRunnable.run();
281        }
282    }
283}
284