DowntimeConditionProvider.java revision d8826bcb2b7f1d8046d5ce95df059cc2559e9f82 
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        return new Condition(id, summary, "", "", 0, state, Condition.FLAG_RELEVANT_NOW);
162    }
163
164    public boolean isDowntimeCondition(Condition condition) {
165        return condition != null && ZenModeConfig.isValidDowntimeConditionId(condition.id);
166    }
167
168    private void init() {
169        updateDays();
170        reevaluateDowntime();
171        updateAlarms();
172    }
173
174    private void updateDays() {
175        mDays.clear();
176        if (mConfig != null) {
177            final int[] days = ZenModeConfig.tryParseDays(mConfig.sleepMode);
178            for (int i = 0; days != null && i < days.length; i++) {
179                mDays.add(days[i]);
180            }
181        }
182    }
183
184    private boolean isInDowntime(long time) {
185        if (mConfig == null || mDays.size() == 0) return false;
186        final long start = getTime(time, mConfig.sleepStartHour, mConfig.sleepStartMinute);
187        long end = getTime(time, mConfig.sleepEndHour, mConfig.sleepEndMinute);
188        if (start == end) return false;
189        if (end < start) {
190            end = addDays(end, 1);
191        }
192        return isInDowntime(-1, time, start, end) || isInDowntime(0, time, start, end);
193    }
194
195    private boolean isInDowntime(int daysOffset, long time, long start, long end) {
196        final int n = Calendar.SATURDAY;
197        final int day = ((getDayOfWeek(time) - 1) + (daysOffset % n) + n) % n + 1;
198        start = addDays(start, daysOffset);
199        end = addDays(end, daysOffset);
200        return mDays.contains(day) && time >= start && time < end;
201    }
202
203    private void reevaluateDowntime() {
204        final boolean inDowntime = isInDowntime(System.currentTimeMillis());
205        if (DEBUG) Slog.d(TAG, "inDowntime=" + inDowntime);
206        if (inDowntime == mInDowntime) return;
207        Slog.i(TAG, (inDowntime ? "Entering" : "Exiting" ) + " downtime");
208        mInDowntime = inDowntime;
209        ZenLog.traceDowntime(mInDowntime, getDayOfWeek(System.currentTimeMillis()), mDays);
210        fireDowntimeChanged();
211    }
212
213    private void fireDowntimeChanged() {
214        if (mCallback != null) {
215            mCallback.onDowntimeChanged(mInDowntime);
216        }
217    }
218
219    private void updateAlarms() {
220        if (mConfig == null) return;
221        updateAlarm(ENTER_ACTION, ENTER_CODE, mConfig.sleepStartHour, mConfig.sleepStartMinute);
222        updateAlarm(EXIT_ACTION, EXIT_CODE, mConfig.sleepEndHour, mConfig.sleepEndMinute);
223    }
224
225    private int getDayOfWeek(long time) {
226        mCalendar.setTimeInMillis(time);
227        return mCalendar.get(Calendar.DAY_OF_WEEK);
228    }
229
230    private long getTime(long millis, int hour, int min) {
231        mCalendar.setTimeInMillis(millis);
232        mCalendar.set(Calendar.HOUR_OF_DAY, hour);
233        mCalendar.set(Calendar.MINUTE, min);
234        mCalendar.set(Calendar.SECOND, 0);
235        mCalendar.set(Calendar.MILLISECOND, 0);
236        return mCalendar.getTimeInMillis();
237    }
238
239    private long addDays(long time, int days) {
240        mCalendar.setTimeInMillis(time);
241        mCalendar.add(Calendar.DATE, days);
242        return mCalendar.getTimeInMillis();
243    }
244
245    private void updateAlarm(String action, int requestCode, int hr, int min) {
246        final AlarmManager alarms = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
247        final long now = System.currentTimeMillis();
248        mCalendar.setTimeInMillis(now);
249        mCalendar.set(Calendar.HOUR_OF_DAY, hr);
250        mCalendar.set(Calendar.MINUTE, min);
251        mCalendar.set(Calendar.SECOND, 0);
252        mCalendar.set(Calendar.MILLISECOND, 0);
253        long time = mCalendar.getTimeInMillis();
254        if (time <= now) {
255            time = addDays(time, 1);
256        }
257        final PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, requestCode,
258                new Intent(action).putExtra(EXTRA_TIME, time), PendingIntent.FLAG_UPDATE_CURRENT);
259        alarms.cancel(pendingIntent);
260        if (mConfig.sleepMode != null) {
261            if (DEBUG) Slog.d(TAG, String.format("Scheduling %s for %s, %s in the future, now=%s",
262                    action, ts(time), time - now, ts(now)));
263            alarms.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent);
264        }
265    }
266
267    private static String ts(long time) {
268        return new Date(time) + " (" + time + ")";
269    }
270
271    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
272        @Override
273        public void onReceive(Context context, Intent intent) {
274            final String action = intent.getAction();
275            final long now = System.currentTimeMillis();
276            if (ENTER_ACTION.equals(action) || EXIT_ACTION.equals(action)) {
277                final long schTime = intent.getLongExtra(EXTRA_TIME, 0);
278                if (DEBUG) Slog.d(TAG, String.format("%s scheduled for %s, fired at %s, delta=%s",
279                        action, ts(schTime), ts(now), now - schTime));
280            } else if (Intent.ACTION_TIMEZONE_CHANGED.equals(action)) {
281                if (DEBUG) Slog.d(TAG, "timezone changed to " + TimeZone.getDefault());
282                mCalendar.setTimeZone(TimeZone.getDefault());
283            } else {
284                if (DEBUG) Slog.d(TAG, action + " fired at " + now);
285            }
286            reevaluateDowntime();
287            updateAlarms();
288        }
289    };
290
291    public interface Callback {
292        void onDowntimeChanged(boolean inDowntime);
293    }
294}
295