DowntimeConditionProvider.java revision 37bc92cc2332eb6f864977381135c19d6a081a92 
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;
46import java.util.TimeZone;
47
48/** Built-in zen condition provider for managing downtime */
49public class DowntimeConditionProvider extends ConditionProviderService {
50    private static final String TAG = "DowntimeConditions";
51    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
52
53    public static final ComponentName COMPONENT =
54            new ComponentName("android", DowntimeConditionProvider.class.getName());
55
56    private static final String ENTER_ACTION = TAG + ".enter";
57    private static final int ENTER_CODE = 100;
58    private static final String EXIT_ACTION = TAG + ".exit";
59    private static final int EXIT_CODE = 101;
60    private static final String EXTRA_TIME = "time";
61
62    private final Calendar mCalendar = Calendar.getInstance();
63    private final Context mContext = this;
64    private final ArraySet<Integer> mDays = new ArraySet<Integer>();
65
66    private boolean mConnected;
67    private boolean mInDowntime;
68    private ZenModeConfig mConfig;
69    private Callback mCallback;
70
71    public DowntimeConditionProvider() {
72        if (DEBUG) Slog.d(TAG, "new DowntimeConditionProvider()");
73    }
74
75    public void dump(PrintWriter pw, DumpFilter filter) {
76        pw.println("    DowntimeConditionProvider:");
77        pw.print("      mConnected="); pw.println(mConnected);
78        pw.print("      mInDowntime="); pw.println(mInDowntime);
79    }
80
81    public void attachBase(Context base) {
82        attachBaseContext(base);
83    }
84
85    public IConditionProvider asInterface() {
86        return (IConditionProvider) onBind(null);
87    }
88
89    public void setCallback(Callback callback) {
90        mCallback = callback;
91    }
92
93    @Override
94    public void onConnected() {
95        if (DEBUG) Slog.d(TAG, "onConnected");
96        mConnected = true;
97        final IntentFilter filter = new IntentFilter();
98        filter.addAction(ENTER_ACTION);
99        filter.addAction(EXIT_ACTION);
100        filter.addAction(Intent.ACTION_TIME_CHANGED);
101        filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
102        mContext.registerReceiver(mReceiver, filter);
103        init();
104    }
105
106    @Override
107    public void onDestroy() {
108        if (DEBUG) Slog.d(TAG, "onDestroy");
109        mConnected = false;
110    }
111
112    @Override
113    public void onRequestConditions(int relevance) {
114        if (DEBUG) Slog.d(TAG, "onRequestConditions relevance=" + relevance);
115        if ((relevance & Condition.FLAG_RELEVANT_NOW) != 0) {
116            if (mInDowntime && mConfig != null) {
117                notifyCondition(createCondition(mConfig.toDowntimeInfo(), Condition.STATE_TRUE));
118            }
119        }
120    }
121
122    @Override
123    public void onSubscribe(Uri conditionId) {
124        if (DEBUG) Slog.d(TAG, "onSubscribe conditionId=" + conditionId);
125        final DowntimeInfo downtime = ZenModeConfig.tryParseDowntimeConditionId(conditionId);
126        if (downtime != null && mConfig != null) {
127            final int state = mConfig.toDowntimeInfo().equals(downtime) && mInDowntime
128                    ? Condition.STATE_TRUE : Condition.STATE_FALSE;
129            if (DEBUG) Slog.d(TAG, "notify condition state: " + Condition.stateToString(state));
130            notifyCondition(createCondition(downtime, state));
131        }
132    }
133
134    @Override
135    public void onUnsubscribe(Uri conditionId) {
136        if (DEBUG) Slog.d(TAG, "onUnsubscribe conditionId=" + conditionId);
137    }
138
139    public void setConfig(ZenModeConfig config) {
140        if (Objects.equals(mConfig, config)) return;
141        if (DEBUG) Slog.d(TAG, "setConfig");
142        mConfig = config;
143        if (mConnected) {
144            init();
145        }
146    }
147
148    public boolean isInDowntime() {
149        return mInDowntime;
150    }
151
152    public Condition createCondition(DowntimeInfo downtime, int state) {
153        if (downtime == null) return null;
154        final Uri id = ZenModeConfig.toDowntimeConditionId(downtime);
155        final String skeleton = DateFormat.is24HourFormat(mContext) ? "Hm" : "hma";
156        final Locale locale = Locale.getDefault();
157        final String pattern = DateFormat.getBestDateTimePattern(locale, skeleton);
158        final long time = getTime(System.currentTimeMillis(), downtime.endHour, downtime.endMinute);
159        final String formatted = new SimpleDateFormat(pattern, locale).format(new Date(time));
160        final String summary = mContext.getString(R.string.downtime_condition_summary, formatted);
161        final String line1 = mContext.getString(R.string.downtime_condition_line_one);
162        return new Condition(id, summary, line1, formatted, 0, state, Condition.FLAG_RELEVANT_NOW);
163    }
164
165    public boolean isDowntimeCondition(Condition condition) {
166        return condition != null && ZenModeConfig.isValidDowntimeConditionId(condition.id);
167    }
168
169    private void init() {
170        updateDays();
171        reevaluateDowntime();
172        updateAlarms();
173    }
174
175    private void updateDays() {
176        mDays.clear();
177        if (mConfig != null) {
178            final int[] days = ZenModeConfig.tryParseDays(mConfig.sleepMode);
179            for (int i = 0; days != null && i < days.length; i++) {
180                mDays.add(days[i]);
181            }
182        }
183    }
184
185    private boolean isInDowntime(long time) {
186        if (mConfig == null || mDays.size() == 0) return false;
187        final long start = getTime(time, mConfig.sleepStartHour, mConfig.sleepStartMinute);
188        long end = getTime(time, mConfig.sleepEndHour, mConfig.sleepEndMinute);
189        if (start == end) return false;
190        if (end < start) {
191            end = addDays(end, 1);
192        }
193        return isInDowntime(-1, time, start, end) || isInDowntime(0, time, start, end);
194    }
195
196    private boolean isInDowntime(int daysOffset, long time, long start, long end) {
197        final int n = Calendar.SATURDAY;
198        final int day = ((getDayOfWeek(time) - 1) + (daysOffset % n) + n) % n + 1;
199        start = addDays(start, daysOffset);
200        end = addDays(end, daysOffset);
201        return mDays.contains(day) && time >= start && time < end;
202    }
203
204    private void reevaluateDowntime() {
205        final boolean inDowntime = isInDowntime(System.currentTimeMillis());
206        if (DEBUG) Slog.d(TAG, "inDowntime=" + inDowntime);
207        if (inDowntime == mInDowntime) return;
208        Slog.i(TAG, (inDowntime ? "Entering" : "Exiting" ) + " downtime");
209        mInDowntime = inDowntime;
210        ZenLog.traceDowntime(mInDowntime, getDayOfWeek(System.currentTimeMillis()), mDays);
211        fireDowntimeChanged();
212    }
213
214    private void fireDowntimeChanged() {
215        if (mCallback != null) {
216            mCallback.onDowntimeChanged(mInDowntime);
217        }
218    }
219
220    private void updateAlarms() {
221        if (mConfig == null) return;
222        updateAlarm(ENTER_ACTION, ENTER_CODE, mConfig.sleepStartHour, mConfig.sleepStartMinute);
223        updateAlarm(EXIT_ACTION, EXIT_CODE, mConfig.sleepEndHour, mConfig.sleepEndMinute);
224    }
225
226    private int getDayOfWeek(long time) {
227        mCalendar.setTimeInMillis(time);
228        return mCalendar.get(Calendar.DAY_OF_WEEK);
229    }
230
231    private long getTime(long millis, int hour, int min) {
232        mCalendar.setTimeInMillis(millis);
233        mCalendar.set(Calendar.HOUR_OF_DAY, hour);
234        mCalendar.set(Calendar.MINUTE, min);
235        mCalendar.set(Calendar.SECOND, 0);
236        mCalendar.set(Calendar.MILLISECOND, 0);
237        return mCalendar.getTimeInMillis();
238    }
239
240    private long addDays(long time, int days) {
241        mCalendar.setTimeInMillis(time);
242        mCalendar.add(Calendar.DATE, days);
243        return mCalendar.getTimeInMillis();
244    }
245
246    private void updateAlarm(String action, int requestCode, int hr, int min) {
247        final AlarmManager alarms = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
248        final long now = System.currentTimeMillis();
249        mCalendar.setTimeInMillis(now);
250        mCalendar.set(Calendar.HOUR_OF_DAY, hr);
251        mCalendar.set(Calendar.MINUTE, min);
252        mCalendar.set(Calendar.SECOND, 0);
253        mCalendar.set(Calendar.MILLISECOND, 0);
254        long time = mCalendar.getTimeInMillis();
255        if (time <= now) {
256            time = addDays(time, 1);
257        }
258        final PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, requestCode,
259                new Intent(action).putExtra(EXTRA_TIME, time), PendingIntent.FLAG_UPDATE_CURRENT);
260        alarms.cancel(pendingIntent);
261        if (mConfig.sleepMode != null) {
262            if (DEBUG) Slog.d(TAG, String.format("Scheduling %s for %s, %s in the future, now=%s",
263                    action, ts(time), time - now, ts(now)));
264            alarms.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent);
265        }
266    }
267
268    private static String ts(long time) {
269        return new Date(time) + " (" + time + ")";
270    }
271
272    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
273        @Override
274        public void onReceive(Context context, Intent intent) {
275            final String action = intent.getAction();
276            final long now = System.currentTimeMillis();
277            if (ENTER_ACTION.equals(action) || EXIT_ACTION.equals(action)) {
278                final long schTime = intent.getLongExtra(EXTRA_TIME, 0);
279                if (DEBUG) Slog.d(TAG, String.format("%s scheduled for %s, fired at %s, delta=%s",
280                        action, ts(schTime), ts(now), now - schTime));
281            } else if (Intent.ACTION_TIMEZONE_CHANGED.equals(action)) {
282                if (DEBUG) Slog.d(TAG, "timezone changed to " + TimeZone.getDefault());
283                mCalendar.setTimeZone(TimeZone.getDefault());
284            } else {
285                if (DEBUG) Slog.d(TAG, action + " fired at " + now);
286            }
287            reevaluateDowntime();
288            updateAlarms();
289        }
290    };
291
292    public interface Callback {
293        void onDowntimeChanged(boolean inDowntime);
294    }
295}
296