DowntimeConditionProvider.java revision 4db0d98b42a723f2e16c6595e85e866fd26c6d98 
1/**
2 * Copyright (c) 2014, 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.server.notification;
18
19import android.app.AlarmManager;
20import android.app.PendingIntent;
21import android.content.BroadcastReceiver;
22import android.content.ComponentName;
23import android.content.Context;
24import android.content.Intent;
25import android.content.IntentFilter;
26import android.net.Uri;
27import android.service.notification.Condition;
28import android.service.notification.ConditionProviderService;
29import android.service.notification.IConditionProvider;
30import android.service.notification.ZenModeConfig;
31import android.service.notification.ZenModeConfig.DowntimeInfo;
32import android.text.format.DateFormat;
33import android.util.ArraySet;
34import android.util.Log;
35import android.util.Slog;
36
37import com.android.internal.R;
38import com.android.server.notification.NotificationManagerService.DumpFilter;
39
40import java.io.PrintWriter;
41import java.text.SimpleDateFormat;
42import java.util.Calendar;
43import java.util.Date;
44import java.util.Locale;
45import java.util.Objects;
46
47/** Built-in zen condition provider for managing downtime */
48public class DowntimeConditionProvider extends ConditionProviderService {
49    private static final String TAG = "DowntimeConditions";
50    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
51
52    public static final ComponentName COMPONENT =
53            new ComponentName("android", DowntimeConditionProvider.class.getName());
54
55    private static final String ENTER_ACTION = TAG + ".enter";
56    private static final int ENTER_CODE = 100;
57    private static final String EXIT_ACTION = TAG + ".exit";
58    private static final int EXIT_CODE = 101;
59    private static final String EXTRA_TIME = "time";
60
61    private final Calendar mCalendar = Calendar.getInstance();
62    private final Context mContext = this;
63    private final ArraySet<Integer> mDays = new ArraySet<Integer>();
64
65    private boolean mConnected;
66    private boolean mInDowntime;
67    private ZenModeConfig mConfig;
68    private Callback mCallback;
69
70    public DowntimeConditionProvider() {
71        if (DEBUG) Slog.d(TAG, "new DowntimeConditionProvider()");
72    }
73
74    public void dump(PrintWriter pw, DumpFilter filter) {
75        pw.println("    DowntimeConditionProvider:");
76        pw.print("      mConnected="); pw.println(mConnected);
77        pw.print("      mInDowntime="); pw.println(mInDowntime);
78    }
79
80    public void attachBase(Context base) {
81        attachBaseContext(base);
82    }
83
84    public IConditionProvider asInterface() {
85        return (IConditionProvider) onBind(null);
86    }
87
88    public void setCallback(Callback callback) {
89        mCallback = callback;
90    }
91
92    @Override
93    public void onConnected() {
94        if (DEBUG) Slog.d(TAG, "onConnected");
95        mConnected = true;
96        final IntentFilter filter = new IntentFilter();
97        filter.addAction(ENTER_ACTION);
98        filter.addAction(EXIT_ACTION);
99        filter.addAction(Intent.ACTION_TIME_CHANGED);
100        filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
101        mContext.registerReceiver(mReceiver, filter);
102        init();
103    }
104
105    @Override
106    public void onDestroy() {
107        if (DEBUG) Slog.d(TAG, "onDestroy");
108        mConnected = false;
109    }
110
111    @Override
112    public void onRequestConditions(int relevance) {
113        if (DEBUG) Slog.d(TAG, "onRequestConditions relevance=" + relevance);
114        if ((relevance & Condition.FLAG_RELEVANT_NOW) != 0) {
115            if (mInDowntime && mConfig != null) {
116                notifyCondition(createCondition(mConfig.toDowntimeInfo(), Condition.STATE_TRUE));
117            }
118        }
119    }
120
121    @Override
122    public void onSubscribe(Uri conditionId) {
123        if (DEBUG) Slog.d(TAG, "onSubscribe conditionId=" + conditionId);
124        final DowntimeInfo downtime = ZenModeConfig.tryParseDowntimeConditionId(conditionId);
125        if (downtime != null && mConfig != null) {
126            final int state = mConfig.toDowntimeInfo().equals(downtime) && mInDowntime
127                    ? Condition.STATE_TRUE : Condition.STATE_FALSE;
128            if (DEBUG) Slog.d(TAG, "notify condition state: " + Condition.stateToString(state));
129            notifyCondition(createCondition(downtime, state));
130        }
131    }
132
133    @Override
134    public void onUnsubscribe(Uri conditionId) {
135        if (DEBUG) Slog.d(TAG, "onUnsubscribe conditionId=" + conditionId);
136    }
137
138    public void setConfig(ZenModeConfig config) {
139        if (Objects.equals(mConfig, config)) return;
140        if (DEBUG) Slog.d(TAG, "setConfig");
141        mConfig = config;
142        if (mConnected) {
143            init();
144        }
145    }
146
147    public boolean isInDowntime() {
148        return mInDowntime;
149    }
150
151    public Condition createCondition(DowntimeInfo downtime, int state) {
152        if (downtime == null) return null;
153        final Uri id = ZenModeConfig.toDowntimeConditionId(downtime);
154        final String skeleton = DateFormat.is24HourFormat(mContext) ? "Hm" : "hma";
155        final Locale locale = Locale.getDefault();
156        final String pattern = DateFormat.getBestDateTimePattern(locale, skeleton);
157        final long time = getTime(System.currentTimeMillis(), downtime.endHour, downtime.endMinute);
158        final String formatted = new SimpleDateFormat(pattern, locale).format(new Date(time));
159        final String summary = mContext.getString(R.string.downtime_condition_summary, formatted);
160        return new Condition(id, summary, "", "", 0, state, Condition.FLAG_RELEVANT_NOW);
161    }
162
163    public boolean isDowntimeCondition(Condition condition) {
164        return condition != null && ZenModeConfig.isValidDowntimeConditionId(condition.id);
165    }
166
167    private void init() {
168        updateDays();
169        reevaluateDowntime();
170        updateAlarms();
171    }
172
173    private void updateDays() {
174        mDays.clear();
175        if (mConfig != null) {
176            final int[] days = ZenModeConfig.tryParseDays(mConfig.sleepMode);
177            for (int i = 0; days != null && i < days.length; i++) {
178                mDays.add(days[i]);
179            }
180        }
181    }
182
183    private boolean isInDowntime(long time) {
184        if (mConfig == null || mDays.size() == 0) return false;
185        final long start = getTime(time, mConfig.sleepStartHour, mConfig.sleepStartMinute);
186        long end = getTime(time, mConfig.sleepEndHour, mConfig.sleepEndMinute);
187        if (start == end) return false;
188        if (end < start) {
189            end = addDays(end, 1);
190        }
191        return isInDowntime(-1, time, start, end) || isInDowntime(0, time, start, end);
192    }
193
194    private boolean isInDowntime(int daysOffset, long time, long start, long end) {
195        final int day = ((getDayOfWeek(time) + daysOffset - 1) % Calendar.SATURDAY) + 1;
196        start = addDays(start, daysOffset);
197        end = addDays(end, daysOffset);
198        return mDays.contains(day) && time >= start && time < end;
199    }
200
201    private void reevaluateDowntime() {
202        final boolean inDowntime = isInDowntime(System.currentTimeMillis());
203        if (DEBUG) Slog.d(TAG, "inDowntime=" + inDowntime);
204        if (inDowntime == mInDowntime) return;
205        Slog.i(TAG, (inDowntime ? "Entering" : "Exiting" ) + " downtime");
206        mInDowntime = inDowntime;
207        ZenLog.traceDowntime(mInDowntime, getDayOfWeek(System.currentTimeMillis()), mDays);
208        fireDowntimeChanged();
209    }
210
211    private void fireDowntimeChanged() {
212        if (mCallback != null) {
213            mCallback.onDowntimeChanged(mInDowntime);
214        }
215    }
216
217    private void updateAlarms() {
218        if (mConfig == null) return;
219        updateAlarm(ENTER_ACTION, ENTER_CODE, mConfig.sleepStartHour, mConfig.sleepStartMinute);
220        updateAlarm(EXIT_ACTION, EXIT_CODE, mConfig.sleepEndHour, mConfig.sleepEndMinute);
221    }
222
223    private int getDayOfWeek(long time) {
224        mCalendar.setTimeInMillis(time);
225        return mCalendar.get(Calendar.DAY_OF_WEEK);
226    }
227
228    private long getTime(long millis, int hour, int min) {
229        mCalendar.setTimeInMillis(millis);
230        mCalendar.set(Calendar.HOUR_OF_DAY, hour);
231        mCalendar.set(Calendar.MINUTE, min);
232        mCalendar.set(Calendar.SECOND, 0);
233        mCalendar.set(Calendar.MILLISECOND, 0);
234        return mCalendar.getTimeInMillis();
235    }
236
237    private long addDays(long time, int days) {
238        mCalendar.setTimeInMillis(time);
239        mCalendar.add(Calendar.DATE, days);
240        return mCalendar.getTimeInMillis();
241    }
242
243    private void updateAlarm(String action, int requestCode, int hr, int min) {
244        final AlarmManager alarms = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
245        final long now = System.currentTimeMillis();
246        mCalendar.setTimeInMillis(now);
247        mCalendar.set(Calendar.HOUR_OF_DAY, hr);
248        mCalendar.set(Calendar.MINUTE, min);
249        mCalendar.set(Calendar.SECOND, 0);
250        mCalendar.set(Calendar.MILLISECOND, 0);
251        long time = mCalendar.getTimeInMillis();
252        if (time <= now) {
253            time = addDays(time, 1);
254        }
255        final PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, requestCode,
256                new Intent(action).putExtra(EXTRA_TIME, time), PendingIntent.FLAG_UPDATE_CURRENT);
257        alarms.cancel(pendingIntent);
258        if (mConfig.sleepMode != null) {
259            if (DEBUG) Slog.d(TAG, String.format("Scheduling %s for %s, %s in the future, now=%s",
260                    action, ts(time), time - now, ts(now)));
261            alarms.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent);
262        }
263    }
264
265    private static String ts(long time) {
266        return new Date(time) + " (" + time + ")";
267    }
268
269    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
270        @Override
271        public void onReceive(Context context, Intent intent) {
272            final String action = intent.getAction();
273            final long now = System.currentTimeMillis();
274            if (ENTER_ACTION.equals(action) || EXIT_ACTION.equals(action)) {
275                final long schTime = intent.getLongExtra(EXTRA_TIME, 0);
276                if (DEBUG) Slog.d(TAG, String.format("%s scheduled for %s, fired at %s, delta=%s",
277                        action, ts(schTime), ts(now), now - schTime));
278            } else {
279                if (DEBUG) Slog.d(TAG, action + " fired at " + now);
280            }
281            reevaluateDowntime();
282            updateAlarms();
283        }
284    };
285
286    public interface Callback {
287        void onDowntimeChanged(boolean inDowntime);
288    }
289}
290