| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.util; |
| |
| import android.app.AlarmManager; |
| import android.os.Handler; |
| import android.os.SystemClock; |
| |
| /** |
| * Schedules a timeout through AlarmManager. Ensures that the timeout is called even when |
| * the device is asleep. |
| */ |
| public class AlarmTimeout implements AlarmManager.OnAlarmListener { |
| |
| public static final int MODE_CRASH_IF_SCHEDULED = 0; |
| public static final int MODE_IGNORE_IF_SCHEDULED = 1; |
| public static final int MODE_RESCHEDULE_IF_SCHEDULED = 2; |
| |
| private final AlarmManager mAlarmManager; |
| private final AlarmManager.OnAlarmListener mListener; |
| private final String mTag; |
| private final Handler mHandler; |
| private boolean mScheduled; |
| |
| public AlarmTimeout(AlarmManager alarmManager, AlarmManager.OnAlarmListener listener, |
| String tag, Handler handler) { |
| mAlarmManager = alarmManager; |
| mListener = listener; |
| mTag = tag; |
| mHandler = handler; |
| } |
| |
| public void schedule(long timeout, int mode) { |
| switch (mode) { |
| case MODE_CRASH_IF_SCHEDULED: |
| if (mScheduled) { |
| throw new IllegalStateException(mTag + " timeout is already scheduled"); |
| } |
| break; |
| case MODE_IGNORE_IF_SCHEDULED: |
| if (mScheduled) { |
| return; |
| } |
| break; |
| case MODE_RESCHEDULE_IF_SCHEDULED: |
| if (mScheduled) { |
| cancel(); |
| } |
| break; |
| default: |
| throw new IllegalArgumentException("Illegal mode: " + mode); |
| } |
| |
| mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, |
| SystemClock.elapsedRealtime() + timeout, mTag, this, mHandler); |
| mScheduled = true; |
| } |
| |
| public boolean isScheduled() { |
| return mScheduled; |
| } |
| |
| public void cancel() { |
| if (mScheduled) { |
| mAlarmManager.cancel(this); |
| mScheduled = false; |
| } |
| } |
| |
| @Override |
| public void onAlarm() { |
| if (!mScheduled) { |
| // We canceled the alarm, but it still fired. Ignore. |
| return; |
| } |
| mScheduled = false; |
| mListener.onAlarm(); |
| } |
| } |