ScheduleCalendar.java revision 7f73308f50791740beb380fecc17903301054ad3 
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.service.notification.ZenModeConfig.ScheduleInfo;
20import android.util.ArraySet;
21
22import java.util.Calendar;
23import java.util.Objects;
24import java.util.TimeZone;
25
26public class ScheduleCalendar {
27    private final ArraySet<Integer> mDays = new ArraySet<Integer>();
28    private final Calendar mCalendar = Calendar.getInstance();
29
30    private ScheduleInfo mSchedule;
31
32    @Override
33    public String toString() {
34        return "ScheduleCalendar[mDays=" + mDays + ", mSchedule=" + mSchedule + "]";
35    }
36
37    public void setSchedule(ScheduleInfo schedule) {
38        if (Objects.equals(mSchedule, schedule)) return;
39        mSchedule = schedule;
40        updateDays();
41    }
42
43    public void maybeSetNextAlarm(long now, long nextAlarm) {
44        if (mSchedule != null) {
45            if (mSchedule.exitAtAlarm && now > mSchedule.nextAlarm) {
46                mSchedule.nextAlarm = nextAlarm;
47            }
48        }
49    }
50
51    public void setTimeZone(TimeZone tz) {
52        mCalendar.setTimeZone(tz);
53    }
54
55    public long getNextChangeTime(long now) {
56        if (mSchedule == null) return 0;
57        final long nextStart = getNextTime(now, mSchedule.startHour, mSchedule.startMinute);
58        final long nextEnd = getNextTime(now, mSchedule.endHour, mSchedule.endMinute);
59        long nextScheduleTime = Math.min(nextStart, nextEnd);
60
61        if (mSchedule.exitAtAlarm && mSchedule.nextAlarm > now) {
62            return Math.min(nextScheduleTime, mSchedule.nextAlarm);
63        } else {
64            return nextScheduleTime;
65        }
66    }
67
68    private long getNextTime(long now, int hr, int min) {
69        final long time = getTime(now, hr, min);
70        return time <= now ? addDays(time, 1) : time;
71    }
72
73    private long getTime(long millis, int hour, int min) {
74        mCalendar.setTimeInMillis(millis);
75        mCalendar.set(Calendar.HOUR_OF_DAY, hour);
76        mCalendar.set(Calendar.MINUTE, min);
77        mCalendar.set(Calendar.SECOND, 0);
78        mCalendar.set(Calendar.MILLISECOND, 0);
79        return mCalendar.getTimeInMillis();
80    }
81
82    public boolean isInSchedule(long time) {
83        if (mSchedule == null || mDays.size() == 0) return false;
84        final long start = getTime(time, mSchedule.startHour, mSchedule.startMinute);
85        long end = getTime(time, mSchedule.endHour, mSchedule.endMinute);
86        if (end <= start) {
87            end = addDays(end, 1);
88        }
89        boolean isInSchedule =
90                isInSchedule(-1, time, start, end) || isInSchedule(0, time, start, end);
91        if (isInSchedule && mSchedule.exitAtAlarm
92                && mSchedule.nextAlarm != 0
93                && time >= mSchedule.nextAlarm) {
94            return false;
95        } else {
96            return isInSchedule;
97        }
98    }
99
100    private boolean isInSchedule(int daysOffset, long time, long start, long end) {
101        final int n = Calendar.SATURDAY;
102        final int day = ((getDayOfWeek(time) - 1) + (daysOffset % n) + n) % n + 1;
103        start = addDays(start, daysOffset);
104        end = addDays(end, daysOffset);
105        return mDays.contains(day) && time >= start && time < end;
106    }
107
108    private int getDayOfWeek(long time) {
109        mCalendar.setTimeInMillis(time);
110        return mCalendar.get(Calendar.DAY_OF_WEEK);
111    }
112
113    private void updateDays() {
114        mDays.clear();
115        if (mSchedule != null && mSchedule.days != null) {
116            for (int i = 0; i < mSchedule.days.length; i++) {
117                mDays.add(mSchedule.days[i]);
118            }
119        }
120    }
121
122    private long addDays(long time, int days) {
123        mCalendar.setTimeInMillis(time);
124        mCalendar.add(Calendar.DATE, days);
125        return mCalendar.getTimeInMillis();
126    }
127}