4b52654e98
See https://source.android.com/setup/contribute/respectful-code for reference BUG=161896447 Test: make and make messagingtests Change-Id: I01c520f1d5e9eab8dbb25b08d133ae34bd301093
64 lines
2.4 KiB
Java
64 lines
2.4 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.messaging.datamodel.media;
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import com.android.messaging.datamodel.binding.BindableOnceData;
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import com.android.messaging.datamodel.media.MediaResourceManager.MediaResourceLoadListener;
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/**
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* The {@link MediaRequest} interface is threading-model-oblivious, allowing the implementations to
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* be processed synchronously or asynchronously.
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* This is a {@link MediaRequest} implementation that includes functionalities such as binding and
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* event callbacks for multi-threaded media request processing.
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*/
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public abstract class BindableMediaRequest<T extends RefCountedMediaResource>
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extends BindableOnceData
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implements MediaRequest<T>, MediaResourceLoadListener<T> {
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private MediaResourceLoadListener<T> mListener;
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public BindableMediaRequest(final MediaResourceLoadListener<T> listener) {
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mListener = listener;
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}
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/**
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* Delegates the media resource callback to the listener. Performs binding check to ensure
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* the listener is still bound to this request.
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*/
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@Override
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public void onMediaResourceLoaded(final MediaRequest<T> request, final T resource,
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final boolean cached) {
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if (isBound() && mListener != null) {
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mListener.onMediaResourceLoaded(request, resource, cached);
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}
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}
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/**
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* Delegates the media resource callback to the listener. Performs binding check to ensure
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* the listener is still bound to this request.
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*/
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@Override
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public void onMediaResourceLoadError(final MediaRequest<T> request, final Exception exception) {
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if (isBound() && mListener != null) {
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mListener.onMediaResourceLoadError(request, exception);
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}
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}
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@Override
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protected void unregisterListeners() {
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mListener = null;
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}
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}
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