/*
* Copyright (C) 2014 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.ex.chips;
/**
* Used by the {@link com.android.ex.chips.BaseRecipientAdapter} to handle fetching
* photos from external sources and caching them for faster lookup later.
*/
public interface PhotoManager {
/** The number of photos cached in this Adapter. */
public static final int PHOTO_CACHE_SIZE = 20;
/**
* Sets the {@link com.android.ex.chips.RecipientEntry}'s photo bytes. If the photo bytes
* are cached, this action happens immediately. Otherwise, the work to fetch the photo
* bytes is performed asynchronously before setting the value on the UI thread.<p/>
*
* If the photo bytes were fetched asynchronously,
* {@link PhotoManagerCallback#onPhotoBytesAsynchronouslyPopulated()} is called. This
* method is not called if the photo bytes have been cached previously (because no
* asynchronous work was performed). In that case,
* {@link PhotoManagerCallback#onPhotoBytesPopulated()} is called.
*/
void populatePhotoBytesAsync(RecipientEntry entry, PhotoManagerCallback callback);
interface PhotoManagerCallback {
void onPhotoBytesPopulated();
void onPhotoBytesAsynchronouslyPopulated();
void onPhotoBytesAsyncLoadFailed();
}
}