/*
|
* 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.keyguard;
|
|
import java.util.ArrayList;
|
import java.util.function.Consumer;
|
|
/**
|
* Base class for lifecycles with observers.
|
*/
|
public class Lifecycle<T> {
|
|
private ArrayList<T> mObservers = new ArrayList<>();
|
|
public void addObserver(T observer) {
|
mObservers.add(observer);
|
}
|
|
public void removeObserver(T observer) {
|
mObservers.remove(observer);
|
}
|
|
public void dispatch(Consumer<T> consumer) {
|
for (int i = 0; i < mObservers.size(); i++) {
|
consumer.accept(mObservers.get(i));
|
}
|
}
|
}
|
