/*
* Copyright (C) 2010 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.quicksearchbox.util;
/**
* {@link NowOrLater} class that converts from one type to another.
*/
public abstract class NowOrLaterWrapper<A, B> implements NowOrLater<B> {
private final NowOrLater<A> mWrapped;
public NowOrLaterWrapper(NowOrLater<A> wrapped) {
mWrapped = wrapped;
}
public void getLater(final Consumer<? super B> consumer) {
mWrapped.getLater(new Consumer<A>(){
public boolean consume(A value) {
return consumer.consume(get(value));
}});
}
public B getNow() {
return get(mWrapped.getNow());
}
public boolean haveNow() {
return mWrapped.haveNow();
}
/**
* Perform the appropriate conversion. This will be called once for every call to
* {@link #getLater(Consumer)} or {@link #getNow()}. The thread that it's called on will depend
* on the behaviour of the wrapped object and the caller.
*/
public abstract B get(A value);
}