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/*
* 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.wakelock;
import android.content.Context;
import android.os.Handler;
import javax.inject.Inject;
/**
* A wake lock that has a built in delay when releasing to give the framebuffer time to update.
*/
public class DelayedWakeLock implements WakeLock {
private static final String TO_STRING_PREFIX = "[DelayedWakeLock] ";
private static final long RELEASE_DELAY_MS = 100;
private final Handler mHandler;
private final WakeLock mInner;
public DelayedWakeLock(Handler h, WakeLock inner) {
mHandler = h;
mInner = inner;
}
@Override
public void acquire(String why) {
mInner.acquire(why);
}
@Override
public void release(String why) {
mHandler.postDelayed(() -> mInner.release(why), RELEASE_DELAY_MS);
}
@Override
public Runnable wrap(Runnable r) {
return WakeLock.wrapImpl(this, r);
}
@Override
public String toString() {
return TO_STRING_PREFIX + mInner;
}
/**
* An injectable builder for {@see DelayedWakeLock} that has the context already filled in.
*/
public static class Builder {
private final Context mContext;
private String mTag;
private Handler mHandler;
/**
* Constructor for DelayedWakeLock.Builder
*/
@Inject
public Builder(Context context) {
mContext = context;
}
/**
* Set the tag for the WakeLock.
*/
public Builder setTag(String tag) {
mTag = tag;
return this;
}
/**
* Set the handler for the DelayedWakeLock.
*/
public Builder setHandler(Handler handler) {
mHandler = handler;
return this;
}
/**
* Build the DelayedWakeLock.
*/
public DelayedWakeLock build() {
return new DelayedWakeLock(mHandler, WakeLock.createPartial(mContext, mTag));
}
}
}
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