| /* |
| * 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)); |
| } |
| } |
| } |