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.android.deskclock.settings;
18
19import android.annotation.TargetApi;
20import android.app.NotificationManager;
21import android.content.Context;
22import android.database.ContentObserver;
23import android.media.AudioManager;
24import android.os.Build;
25import android.provider.Settings;
26import android.support.v7.preference.Preference;
27import android.support.v7.preference.PreferenceViewHolder;
28import android.util.AttributeSet;
29import android.view.View;
30import android.widget.ImageView;
31import android.widget.SeekBar;
32
33import com.android.deskclock.R;
34import com.android.deskclock.RingtonePreviewKlaxon;
35import com.android.deskclock.Utils;
36import com.android.deskclock.data.DataModel;
37
38import static android.content.Context.AUDIO_SERVICE;
39import static android.content.Context.NOTIFICATION_SERVICE;
40import static android.media.AudioManager.STREAM_ALARM;
41
42public class AlarmVolumePreference extends Preference {
43
44    private static final long ALARM_PREVIEW_DURATION_MS = 2000;
45
46    private SeekBar mSeekbar;
47    private ImageView mAlarmIcon;
48    private boolean mPreviewPlaying;
49
50    public AlarmVolumePreference(Context context, AttributeSet attrs) {
51        super(context, attrs);
52    }
53
54    @Override
55    public void onBindViewHolder(PreferenceViewHolder holder) {
56        super.onBindViewHolder(holder);
57
58        final Context context = getContext();
59        final AudioManager audioManager = (AudioManager) context.getSystemService(AUDIO_SERVICE);
60
61        // Disable click feedback for this preference.
62        holder.itemView.setClickable(false);
63
64        mSeekbar = (SeekBar) holder.findViewById(R.id.alarm_volume_slider);
65        mSeekbar.setMax(audioManager.getStreamMaxVolume(STREAM_ALARM));
66        mSeekbar.setProgress(audioManager.getStreamVolume(STREAM_ALARM));
67        mAlarmIcon = (ImageView) holder.findViewById(R.id.alarm_icon);
68        onSeekbarChanged();
69
70        final ContentObserver volumeObserver = new ContentObserver(mSeekbar.getHandler()) {
71            @Override
72            public void onChange(boolean selfChange) {
73                // Volume was changed elsewhere, update our slider.
74                mSeekbar.setProgress(audioManager.getStreamVolume(STREAM_ALARM));
75            }
76        };
77
78        mSeekbar.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
79            @Override
80            public void onViewAttachedToWindow(View v) {
81                context.getContentResolver().registerContentObserver(Settings.System.CONTENT_URI,
82                        true, volumeObserver);
83            }
84
85            @Override
86            public void onViewDetachedFromWindow(View v) {
87                context.getContentResolver().unregisterContentObserver(volumeObserver);
88            }
89        });
90
91        mSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
92            @Override
93            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
94                if (fromUser) {
95                    audioManager.setStreamVolume(STREAM_ALARM, progress, 0);
96                }
97                onSeekbarChanged();
98            }
99
100            @Override
101            public void onStartTrackingTouch(SeekBar seekBar) {
102            }
103
104            @Override
105            public void onStopTrackingTouch(SeekBar seekBar) {
106                if (!mPreviewPlaying && seekBar.getProgress() != 0) {
107                    // If we are not currently playing and progress is set to non-zero, start.
108                    RingtonePreviewKlaxon.start(
109                            context, DataModel.getDataModel().getDefaultAlarmRingtoneUri());
110                    mPreviewPlaying = true;
111                    seekBar.postDelayed(new Runnable() {
112                        @Override
113                        public void run() {
114                            RingtonePreviewKlaxon.stop(context);
115                            mPreviewPlaying = false;
116                        }
117                    }, ALARM_PREVIEW_DURATION_MS);
118                }
119            }
120        });
121    }
122
123    private void onSeekbarChanged() {
124        mSeekbar.setEnabled(doesDoNotDisturbAllowAlarmPlayback());
125        mAlarmIcon.setImageResource(mSeekbar.getProgress() == 0 ?
126                R.drawable.ic_alarm_off_24dp : R.drawable.ic_alarm_small);
127    }
128
129    private boolean doesDoNotDisturbAllowAlarmPlayback() {
130        return !Utils.isNOrLater() || doesDoNotDisturbAllowAlarmPlaybackNPlus();
131    }
132
133    @TargetApi(Build.VERSION_CODES.N)
134    private boolean doesDoNotDisturbAllowAlarmPlaybackNPlus() {
135        final NotificationManager notificationManager = (NotificationManager)
136                getContext().getSystemService(NOTIFICATION_SERVICE);
137        return notificationManager.getCurrentInterruptionFilter() !=
138                NotificationManager.INTERRUPTION_FILTER_NONE;
139    }
140}