MenuUpdater.java revision 65fda1eaa94968bb55d5ded10dcb0b3f37fb05f2 
1/*
2 * Copyright (C) 2016 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.android.tv.menu;
18
19import android.content.Context;
20import android.support.annotation.Nullable;
21
22import com.android.tv.ChannelTuner;
23import com.android.tv.TvApplication;
24import com.android.tv.common.feature.CommonFeatures;
25import com.android.tv.dvr.RecordedProgram;
26import com.android.tv.data.Channel;
27import com.android.tv.dvr.DvrDataManager;
28import com.android.tv.dvr.DvrDataManager.OnDvrScheduleLoadFinishedListener;
29import com.android.tv.dvr.DvrDataManager.OnRecordedProgramLoadFinishedListener;
30import com.android.tv.dvr.DvrDataManager.RecordedProgramListener;
31import com.android.tv.dvr.DvrDataManager.ScheduledRecordingListener;
32import com.android.tv.dvr.ScheduledRecording;
33import com.android.tv.ui.TunableTvView;
34import com.android.tv.ui.TunableTvView.OnScreenBlockingChangedListener;
35
36/**
37 * Update menu items when needed.
38 *
39 * <p>As the menu is updated when it shows up, this class handles only the dynamic updates.
40 */
41public class MenuUpdater {
42    // Can be null for testing.
43    @Nullable
44    private final TunableTvView mTvView;
45    private final Menu mMenu;
46    @Nullable
47    private final DvrDataManager mDvrDataManager;
48    private ChannelTuner mChannelTuner;
49
50    private final OnScreenBlockingChangedListener mOnScreenBlockingChangeListener =
51            new OnScreenBlockingChangedListener() {
52                @Override
53                public void onScreenBlockingChanged(boolean blocked) {
54                    mMenu.update(PlayControlsRow.ID);
55                }
56            };
57    private final OnRecordedProgramLoadFinishedListener mRecordedProgramLoadedListener =
58            new OnRecordedProgramLoadFinishedListener() {
59                @Override
60                public void onRecordedProgramLoadFinished() {
61                    mMenu.update(ChannelsRow.ID);
62                }
63            };
64    private final RecordedProgramListener mRecordedProgramListener =
65            new RecordedProgramListener() {
66                @Override
67                public void onRecordedProgramAdded(RecordedProgram recordedProgram) {
68                    mMenu.update(ChannelsRow.ID);
69                }
70
71                @Override
72                public void onRecordedProgramChanged(RecordedProgram recordedProgram) { }
73
74                @Override
75                public void onRecordedProgramRemoved(RecordedProgram recordedProgram) {
76                    if (mDvrDataManager != null && mDvrDataManager.getRecordedPrograms().isEmpty()
77                            && mDvrDataManager.getStartedRecordings().isEmpty()
78                            && mDvrDataManager.getNonStartedScheduledRecordings().isEmpty()
79                            && mDvrDataManager.getSeriesRecordings().isEmpty()) {
80                        mMenu.update(ChannelsRow.ID);
81                    }
82                }
83            };
84    private final OnDvrScheduleLoadFinishedListener mDvrScheduleLoadedListener =
85            new OnDvrScheduleLoadFinishedListener() {
86                @Override
87                public void onDvrScheduleLoadFinished() {
88                    mMenu.update(ChannelsRow.ID);
89                }
90            };
91    private final ScheduledRecordingListener mScheduledRecordingListener =
92            new ScheduledRecordingListener() {
93                @Override
94                public void onScheduledRecordingAdded(ScheduledRecording... scheduledRecordings) {
95                    mMenu.update(ChannelsRow.ID);
96                }
97
98                @Override
99                public void onScheduledRecordingRemoved(ScheduledRecording... scheduledRecordings) {
100                    if (mDvrDataManager != null && mDvrDataManager.getRecordedPrograms().isEmpty()
101                            && mDvrDataManager.getStartedRecordings().isEmpty()
102                            && mDvrDataManager.getNonStartedScheduledRecordings().isEmpty()
103                            && mDvrDataManager.getSeriesRecordings().isEmpty()) {
104                        mMenu.update(ChannelsRow.ID);
105                    }
106                }
107
108                @Override
109                public void onScheduledRecordingStatusChanged(ScheduledRecording... schedules) { }
110    };
111
112    private final ChannelTuner.Listener mChannelTunerListener = new ChannelTuner.Listener() {
113        @Override
114        public void onLoadFinished() {}
115
116        @Override
117        public void onBrowsableChannelListChanged() {
118            mMenu.update();
119        }
120
121        @Override
122        public void onCurrentChannelUnavailable(Channel channel) {}
123
124        @Override
125        public void onChannelChanged(Channel previousChannel, Channel currentChannel) {
126            mMenu.update(ChannelsRow.ID);
127        }
128    };
129
130    public MenuUpdater(Context context, TunableTvView tvView, Menu menu) {
131        mTvView = tvView;
132        mMenu = menu;
133        if (mTvView != null) {
134            mTvView.setOnScreenBlockedListener(mOnScreenBlockingChangeListener);
135        }
136        if (CommonFeatures.DVR.isEnabled(context)) {
137            mDvrDataManager = TvApplication.getSingletons(context).getDvrDataManager();
138            mDvrDataManager.addDvrScheduleLoadFinishedListener(mDvrScheduleLoadedListener);
139            mDvrDataManager.addScheduledRecordingListener(mScheduledRecordingListener);
140            mDvrDataManager.addRecordedProgramLoadFinishedListener(mRecordedProgramLoadedListener);
141            mDvrDataManager.addRecordedProgramListener(mRecordedProgramListener);
142        } else {
143            mDvrDataManager = null;
144        }
145    }
146
147    /**
148     * Sets the instance of {@link ChannelTuner}. Call this method when the channel tuner is ready
149     * or not available any more.
150     */
151    public void setChannelTuner(ChannelTuner channelTuner) {
152        if (mChannelTuner != null) {
153            mChannelTuner.removeListener(mChannelTunerListener);
154        }
155        mChannelTuner = channelTuner;
156        if (mChannelTuner != null) {
157            mChannelTuner.addListener(mChannelTunerListener);
158        }
159        mMenu.update();
160    }
161
162    /**
163     * Called at the end of the menu's lifetime.
164     */
165    public void release() {
166        if (mDvrDataManager != null) {
167            mDvrDataManager.removeScheduledRecordingListener(mScheduledRecordingListener);
168            mDvrDataManager.removeRecordedProgramListener(mRecordedProgramListener);
169            mDvrDataManager.removeDvrScheduleLoadFinishedListener(mDvrScheduleLoadedListener);
170            mDvrDataManager
171                    .removeRecordedProgramLoadFinishedListener(mRecordedProgramLoadedListener);
172        }
173        if (mChannelTuner != null) {
174            mChannelTuner.removeListener(mChannelTunerListener);
175        }
176        if (mTvView != null) {
177            mTvView.setOnScreenBlockedListener(null);
178        }
179    }
180}
181