/*******************************************************************************
* Copyright 2011-2013 Sergey Tarasevich
*
* 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.nostra13.universalimageloader.core.listener;
import android.graphics.Bitmap;
import android.view.View;
import com.nostra13.universalimageloader.core.assist.FailReason;
/**
* Listener for image loading process.<br />
* You can use {@link SimpleImageLoadingListener} for implementing only needed methods.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @see SimpleImageLoadingListener
* @see com.nostra13.universalimageloader.core.assist.FailReason
* @since 1.0.0
*/
public interface ImageLoadingListener {
/**
* Is called when image loading task was started
*
* @param imageUri Loading image URI
* @param view View for image
*/
void onLoadingStarted(String imageUri, View view);
/**
* Is called when an error was occurred during image loading
*
* @param imageUri Loading image URI
* @param view View for image. Can be <b>null</b>.
* @param failReason {@linkplain com.nostra13.universalimageloader.core.assist.FailReason The reason} why image
* loading was failed
*/
void onLoadingFailed(String imageUri, View view, FailReason failReason);
/**
* Is called when image is loaded successfully (and displayed in View if one was specified)
*
* @param imageUri Loaded image URI
* @param view View for image. Can be <b>null</b>.
* @param loadedImage Bitmap of loaded and decoded image
*/
void onLoadingComplete(String imageUri, View view, Bitmap loadedImage);
/**
* Is called when image loading task was cancelled because View for image was reused in newer task
*
* @param imageUri Loading image URI
* @param view View for image. Can be <b>null</b>.
*/
void onLoadingCancelled(String imageUri, View view);
}