/*******************************************************************************
* 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.smartandroid.sa.zUImageLoader.core;
import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.Executor;
import android.content.Context;
import android.content.res.Resources;
import android.util.DisplayMetrics;
import com.smartandroid.sa.zUImageLoader.cache.disc.DiskCache;
import com.smartandroid.sa.zUImageLoader.cache.disc.naming.FileNameGenerator;
import com.smartandroid.sa.zUImageLoader.cache.memory.MemoryCache;
import com.smartandroid.sa.zUImageLoader.cache.memory.impl.FuzzyKeyMemoryCache;
import com.smartandroid.sa.zUImageLoader.core.assist.FlushedInputStream;
import com.smartandroid.sa.zUImageLoader.core.assist.ImageSize;
import com.smartandroid.sa.zUImageLoader.core.assist.QueueProcessingType;
import com.smartandroid.sa.zUImageLoader.core.decode.ImageDecoder;
import com.smartandroid.sa.zUImageLoader.core.download.ImageDownloader;
import com.smartandroid.sa.zUImageLoader.core.process.BitmapProcessor;
import com.smartandroid.sa.zUImageLoader.utils.L;
import com.smartandroid.sa.zUImageLoader.utils.MemoryCacheUtils;
/**
* Presents configuration for {@link ImageLoader}
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @see ImageLoader
* @see MemoryCache
* @see DiskCache
* @see DisplayImageOptions
* @see ImageDownloader
* @see FileNameGenerator
* @since 1.0.0
*/
public final class ImageLoaderConfiguration {
final Resources resources;
final int maxImageWidthForMemoryCache;
final int maxImageHeightForMemoryCache;
final int maxImageWidthForDiskCache;
final int maxImageHeightForDiskCache;
final BitmapProcessor processorForDiskCache;
final Executor taskExecutor;
final Executor taskExecutorForCachedImages;
final boolean customExecutor;
final boolean customExecutorForCachedImages;
final int threadPoolSize;
final int threadPriority;
final QueueProcessingType tasksProcessingType;
final MemoryCache memoryCache;
final DiskCache diskCache;
final ImageDownloader downloader;
final ImageDecoder decoder;
final DisplayImageOptions defaultDisplayImageOptions;
final ImageDownloader networkDeniedDownloader;
final ImageDownloader slowNetworkDownloader;
private ImageLoaderConfiguration(final Builder builder) {
resources = builder.context.getResources();
maxImageWidthForMemoryCache = builder.maxImageWidthForMemoryCache;
maxImageHeightForMemoryCache = builder.maxImageHeightForMemoryCache;
maxImageWidthForDiskCache = builder.maxImageWidthForDiskCache;
maxImageHeightForDiskCache = builder.maxImageHeightForDiskCache;
processorForDiskCache = builder.processorForDiskCache;
taskExecutor = builder.taskExecutor;
taskExecutorForCachedImages = builder.taskExecutorForCachedImages;
threadPoolSize = builder.threadPoolSize;
threadPriority = builder.threadPriority;
tasksProcessingType = builder.tasksProcessingType;
diskCache = builder.diskCache;
memoryCache = builder.memoryCache;
defaultDisplayImageOptions = builder.defaultDisplayImageOptions;
downloader = builder.downloader;
decoder = builder.decoder;
customExecutor = builder.customExecutor;
customExecutorForCachedImages = builder.customExecutorForCachedImages;
networkDeniedDownloader = new NetworkDeniedImageDownloader(downloader);
slowNetworkDownloader = new SlowNetworkImageDownloader(downloader);
L.writeDebugLogs(builder.writeLogs);
}
/**
* Creates default configuration for {@link ImageLoader} <br />
* <b>Default values:</b>
* <ul>
* <li>maxImageWidthForMemoryCache = device's screen width</li>
* <li>maxImageHeightForMemoryCache = device's screen height</li>
* <li>maxImageWidthForDikcCache = unlimited</li>
* <li>maxImageHeightForDiskCache = unlimited</li>
* <li>threadPoolSize = {@link Builder#DEFAULT_THREAD_POOL_SIZE this}</li>
* <li>threadPriority = {@link Builder#DEFAULT_THREAD_PRIORITY this}</li>
* <li>allow to cache different sizes of image in memory</li>
* <li>memoryCache =
* {@link DefaultConfigurationFactory#createMemoryCache(int)}</li>
* <li>diskCache =
* {@link com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache}
* </li>
* <li>imageDownloader =
* {@link DefaultConfigurationFactory#createImageDownloader(Context)}</li>
* <li>imageDecoder =
* {@link DefaultConfigurationFactory#createImageDecoder(boolean)}</li>
* <li>diskCacheFileNameGenerator =
* {@link DefaultConfigurationFactory#createFileNameGenerator()}</li>
* <li>defaultDisplayImageOptions =
* {@link DisplayImageOptions#createSimple() Simple options}</li>
* <li>tasksProcessingOrder = {@link QueueProcessingType#FIFO}</li>
* <li>detailed logging disabled</li>
* </ul>
*/
public static ImageLoaderConfiguration createDefault(Context context) {
return new Builder(context).build();
}
ImageSize getMaxImageSize() {
DisplayMetrics displayMetrics = resources.getDisplayMetrics();
int width = maxImageWidthForMemoryCache;
if (width <= 0) {
width = displayMetrics.widthPixels;
}
int height = maxImageHeightForMemoryCache;
if (height <= 0) {
height = displayMetrics.heightPixels;
}
return new ImageSize(width, height);
}
/**
* Builder for {@link ImageLoaderConfiguration}
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
*/
public static class Builder {
private static final String WARNING_OVERLAP_DISK_CACHE_PARAMS = "diskCache(), diskCacheSize() and diskCacheFileCount calls overlap each other";
private static final String WARNING_OVERLAP_DISK_CACHE_NAME_GENERATOR = "diskCache() and diskCacheFileNameGenerator() calls overlap each other";
private static final String WARNING_OVERLAP_MEMORY_CACHE = "memoryCache() and memoryCacheSize() calls overlap each other";
private static final String WARNING_OVERLAP_EXECUTOR = "threadPoolSize(), threadPriority() and tasksProcessingOrder() calls "
+ "can overlap taskExecutor() and taskExecutorForCachedImages() calls.";
/** {@value} */
public static final int DEFAULT_THREAD_POOL_SIZE = 3;
/** {@value} */
public static final int DEFAULT_THREAD_PRIORITY = Thread.NORM_PRIORITY - 1;
/** {@value} */
public static final QueueProcessingType DEFAULT_TASK_PROCESSING_TYPE = QueueProcessingType.FIFO;
private Context context;
private int maxImageWidthForMemoryCache = 0;
private int maxImageHeightForMemoryCache = 0;
private int maxImageWidthForDiskCache = 0;
private int maxImageHeightForDiskCache = 0;
private BitmapProcessor processorForDiskCache = null;
private Executor taskExecutor = null;
private Executor taskExecutorForCachedImages = null;
private boolean customExecutor = false;
private boolean customExecutorForCachedImages = false;
private int threadPoolSize = DEFAULT_THREAD_POOL_SIZE;
private int threadPriority = DEFAULT_THREAD_PRIORITY;
private boolean denyCacheImageMultipleSizesInMemory = false;
private QueueProcessingType tasksProcessingType = DEFAULT_TASK_PROCESSING_TYPE;
private int memoryCacheSize = 0;
private long diskCacheSize = 0;
private int diskCacheFileCount = 0;
private MemoryCache memoryCache = null;
private DiskCache diskCache = null;
private FileNameGenerator diskCacheFileNameGenerator = null;
private ImageDownloader downloader = null;
private ImageDecoder decoder;
private DisplayImageOptions defaultDisplayImageOptions = null;
private boolean writeLogs = false;
public Builder(Context context) {
this.context = context.getApplicationContext();
}
/**
* Sets options for memory cache
*
* @param maxImageWidthForMemoryCache
* Maximum image width which will be used for memory saving
* during decoding an image to
* {@link android.graphics.Bitmap Bitmap}. <b>Default value -
* device's screen width</b>
* @param maxImageHeightForMemoryCache
* Maximum image height which will be used for memory saving
* during decoding an image to
* {@link android.graphics.Bitmap Bitmap}. <b>Default
* value</b> - device's screen height
*/
public Builder memoryCacheExtraOptions(int maxImageWidthForMemoryCache,
int maxImageHeightForMemoryCache) {
this.maxImageWidthForMemoryCache = maxImageWidthForMemoryCache;
this.maxImageHeightForMemoryCache = maxImageHeightForMemoryCache;
return this;
}
/**
* @deprecated Use
* {@link #diskCacheExtraOptions(int, int, com.nostra13.universalimageloader.core.process.BitmapProcessor)}
* instead
*/
@Deprecated
public Builder discCacheExtraOptions(int maxImageWidthForDiskCache,
int maxImageHeightForDiskCache,
BitmapProcessor processorForDiskCache) {
return diskCacheExtraOptions(maxImageWidthForDiskCache,
maxImageHeightForDiskCache, processorForDiskCache);
}
/**
* Sets options for resizing/compressing of downloaded images before
* saving to disk cache.<br />
* <b>NOTE: Use this option only when you have appropriate needs. It can
* make ImageLoader slower.</b>
*
* @param maxImageWidthForDiskCache
* Maximum width of downloaded images for saving at disk
* cache
* @param maxImageHeightForDiskCache
* Maximum height of downloaded images for saving at disk
* cache
* @param processorForDiskCache
* null-ok; {@linkplain BitmapProcessor Bitmap processor}
* which process images before saving them in disc cache
*/
public Builder diskCacheExtraOptions(int maxImageWidthForDiskCache,
int maxImageHeightForDiskCache,
BitmapProcessor processorForDiskCache) {
this.maxImageWidthForDiskCache = maxImageWidthForDiskCache;
this.maxImageHeightForDiskCache = maxImageHeightForDiskCache;
this.processorForDiskCache = processorForDiskCache;
return this;
}
/**
* Sets custom {@linkplain Executor executor} for tasks of loading and
* displaying images.<br />
* <br />
* <b>NOTE:</b> If you set custom executor then following configuration
* options will not be considered for this executor:
* <ul>
* <li>{@link #threadPoolSize(int)}</li>
* <li>{@link #threadPriority(int)}</li>
* <li>{@link #tasksProcessingOrder(QueueProcessingType)}</li>
* </ul>
*
* @see #taskExecutorForCachedImages(Executor)
*/
public Builder taskExecutor(Executor executor) {
if (threadPoolSize != DEFAULT_THREAD_POOL_SIZE
|| threadPriority != DEFAULT_THREAD_PRIORITY
|| tasksProcessingType != DEFAULT_TASK_PROCESSING_TYPE) {
L.w(WARNING_OVERLAP_EXECUTOR);
}
this.taskExecutor = executor;
return this;
}
/**
* Sets custom {@linkplain Executor executor} for tasks of displaying
* <b>cached on disk</b> images (these tasks are executed quickly so UIL
* prefer to use separate executor for them).<br />
* <br />
* If you set the same executor for {@linkplain #taskExecutor(Executor)
* general tasks} and tasks about cached images (this method) then these
* tasks will be in the same thread pool. So short-lived tasks can wait
* a long time for their turn.<br />
* <br />
* <b>NOTE:</b> If you set custom executor then following configuration
* options will not be considered for this executor:
* <ul>
* <li>{@link #threadPoolSize(int)}</li>
* <li>{@link #threadPriority(int)}</li>
* <li>{@link #tasksProcessingOrder(QueueProcessingType)}</li>
* </ul>
*
* @see #taskExecutor(Executor)
*/
public Builder taskExecutorForCachedImages(
Executor executorForCachedImages) {
if (threadPoolSize != DEFAULT_THREAD_POOL_SIZE
|| threadPriority != DEFAULT_THREAD_PRIORITY
|| tasksProcessingType != DEFAULT_TASK_PROCESSING_TYPE) {
L.w(WARNING_OVERLAP_EXECUTOR);
}
this.taskExecutorForCachedImages = executorForCachedImages;
return this;
}
/**
* Sets thread pool size for image display tasks.<br />
* Default value - {@link #DEFAULT_THREAD_POOL_SIZE this}
*/
public Builder threadPoolSize(int threadPoolSize) {
if (taskExecutor != null || taskExecutorForCachedImages != null) {
L.w(WARNING_OVERLAP_EXECUTOR);
}
this.threadPoolSize = threadPoolSize;
return this;
}
/**
* Sets the priority for image loading threads. Should be <b>NOT</b>
* greater than {@link Thread#MAX_PRIORITY} or less than
* {@link Thread#MIN_PRIORITY}<br />
* Default value - {@link #DEFAULT_THREAD_PRIORITY this}
*/
public Builder threadPriority(int threadPriority) {
if (taskExecutor != null || taskExecutorForCachedImages != null) {
L.w(WARNING_OVERLAP_EXECUTOR);
}
if (threadPriority < Thread.MIN_PRIORITY) {
this.threadPriority = Thread.MIN_PRIORITY;
} else {
if (threadPriority > Thread.MAX_PRIORITY) {
this.threadPriority = Thread.MAX_PRIORITY;
} else {
this.threadPriority = threadPriority;
}
}
return this;
}
/**
* When you display an image in a small {@link android.widget.ImageView
* ImageView} and later you try to display this image (from identical
* URI) in a larger {@link android.widget.ImageView ImageView} so
* decoded image of bigger size will be cached in memory as a previous
* decoded image of smaller size.<br />
* So <b>the default behavior is to allow to cache multiple sizes of one
* image in memory</b>. You can <b>deny</b> it by calling <b>this</b>
* method: so when some image will be cached in memory then previous
* cached size of this image (if it exists) will be removed from memory
* cache before.
*/
public Builder denyCacheImageMultipleSizesInMemory() {
this.denyCacheImageMultipleSizesInMemory = true;
return this;
}
/**
* Sets type of queue processing for tasks for loading and displaying
* images.<br />
* Default value - {@link QueueProcessingType#FIFO}
*/
public Builder tasksProcessingOrder(
QueueProcessingType tasksProcessingType) {
if (taskExecutor != null || taskExecutorForCachedImages != null) {
L.w(WARNING_OVERLAP_EXECUTOR);
}
this.tasksProcessingType = tasksProcessingType;
return this;
}
/**
* Sets maximum memory cache size for {@link android.graphics.Bitmap
* bitmaps} (in bytes).<br />
* Default value - 1/8 of available app memory.<br />
* <b>NOTE:</b> If you use this method then
* {@link com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache
* LruMemoryCache} will be used as memory cache. You can use
* {@link #memoryCache(MemoryCache)} method to set your own
* implementation of {@link MemoryCache}.
*/
public Builder memoryCacheSize(int memoryCacheSize) {
if (memoryCacheSize <= 0)
throw new IllegalArgumentException(
"memoryCacheSize must be a positive number");
if (memoryCache != null) {
L.w(WARNING_OVERLAP_MEMORY_CACHE);
}
this.memoryCacheSize = memoryCacheSize;
return this;
}
/**
* Sets maximum memory cache size (in percent of available app memory)
* for {@link android.graphics.Bitmap bitmaps}.<br />
* Default value - 1/8 of available app memory.<br />
* <b>NOTE:</b> If you use this method then
* {@link com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache
* LruMemoryCache} will be used as memory cache. You can use
* {@link #memoryCache(MemoryCache)} method to set your own
* implementation of {@link MemoryCache}.
*/
public Builder memoryCacheSizePercentage(int availableMemoryPercent) {
if (availableMemoryPercent <= 0 || availableMemoryPercent >= 100) {
throw new IllegalArgumentException(
"availableMemoryPercent must be in range (0 < % < 100)");
}
if (memoryCache != null) {
L.w(WARNING_OVERLAP_MEMORY_CACHE);
}
long availableMemory = Runtime.getRuntime().maxMemory();
memoryCacheSize = (int) (availableMemory * (availableMemoryPercent / 100f));
return this;
}
/**
* Sets memory cache for {@link android.graphics.Bitmap bitmaps}.<br />
* Default value -
* {@link com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache
* LruMemoryCache} with limited memory cache size (size = 1/8 of
* available app memory)<br />
* <br />
* <b>NOTE:</b> If you set custom memory cache then following
* configuration option will not be considered:
* <ul>
* <li>{@link #memoryCacheSize(int)}</li>
* </ul>
*/
public Builder memoryCache(MemoryCache memoryCache) {
if (memoryCacheSize != 0) {
L.w(WARNING_OVERLAP_MEMORY_CACHE);
}
this.memoryCache = memoryCache;
return this;
}
/** @deprecated Use {@link #diskCacheSize(int)} instead */
@Deprecated
public Builder discCacheSize(int maxCacheSize) {
return diskCacheSize(maxCacheSize);
}
/**
* Sets maximum disk cache size for images (in bytes).<br />
* By default: disk cache is unlimited.<br />
* <b>NOTE:</b> If you use this method then
* {@link com.nostra13.universalimageloader.cache.disc.impl.ext.LruDiscCache
* LruDiscCache} will be used as disk cache. You can use
* {@link #diskCache(DiskCache)} method for introduction your own
* implementation of {@link DiskCache}
*/
public Builder diskCacheSize(int maxCacheSize) {
if (maxCacheSize <= 0)
throw new IllegalArgumentException(
"maxCacheSize must be a positive number");
if (diskCache != null) {
L.w(WARNING_OVERLAP_DISK_CACHE_PARAMS);
}
this.diskCacheSize = maxCacheSize;
return this;
}
/** @deprecated Use {@link #diskCacheFileCount(int)} instead */
@Deprecated
public Builder discCacheFileCount(int maxFileCount) {
return diskCacheFileCount(maxFileCount);
}
/**
* Sets maximum file count in disk cache directory.<br />
* By default: disk cache is unlimited.<br />
* <b>NOTE:</b> If you use this method then
* {@link com.nostra13.universalimageloader.cache.disc.impl.ext.LruDiscCache
* LruDiscCache} will be used as disk cache. You can use
* {@link #diskCache(DiskCache)} method for introduction your own
* implementation of {@link DiskCache}
*/
public Builder diskCacheFileCount(int maxFileCount) {
if (maxFileCount <= 0)
throw new IllegalArgumentException(
"maxFileCount must be a positive number");
if (diskCache != null) {
L.w(WARNING_OVERLAP_DISK_CACHE_PARAMS);
}
this.diskCacheFileCount = maxFileCount;
return this;
}
/**
* @deprecated Use
* {@link #diskCacheFileNameGenerator(com.nostra13.universalimageloader.cache.disc.naming.FileNameGenerator)}
*/
@Deprecated
public Builder discCacheFileNameGenerator(
FileNameGenerator fileNameGenerator) {
return diskCacheFileNameGenerator(fileNameGenerator);
}
/**
* Sets name generator for files cached in disk cache.<br />
* Default value -
* {@link com.nostra13.universalimageloader.core.DefaultConfigurationFactory#createFileNameGenerator()
* DefaultConfigurationFactory.createFileNameGenerator()}
*/
public Builder diskCacheFileNameGenerator(
FileNameGenerator fileNameGenerator) {
if (diskCache != null) {
L.w(WARNING_OVERLAP_DISK_CACHE_NAME_GENERATOR);
}
this.diskCacheFileNameGenerator = fileNameGenerator;
return this;
}
/**
* @deprecated Use
* {@link #diskCache(com.nostra13.universalimageloader.cache.disc.DiskCache)}
*/
@Deprecated
public Builder discCache(DiskCache diskCache) {
return diskCache(diskCache);
}
/**
* Sets disk cache for images.<br />
* Default value -
* {@link com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache
* BaseDiscCache}. Cache directory is defined by
* {@link com.nostra13.universalimageloader.utils.StorageUtils#getCacheDirectory(Context)
* StorageUtils.getCacheDirectory(Context)}.<br />
* <br />
* <b>NOTE:</b> If you set custom disk cache then following
* configuration option will not be considered:
* <ul>
* <li>{@link #diskCacheSize(int)}</li>
* <li>{@link #diskCacheFileCount(int)}</li>
* <li>{@link #diskCacheFileNameGenerator(FileNameGenerator)}</li>
* </ul>
*/
public Builder diskCache(DiskCache diskCache) {
if (diskCacheSize > 0 || diskCacheFileCount > 0) {
L.w(WARNING_OVERLAP_DISK_CACHE_PARAMS);
}
if (diskCacheFileNameGenerator != null) {
L.w(WARNING_OVERLAP_DISK_CACHE_NAME_GENERATOR);
}
this.diskCache = diskCache;
return this;
}
/**
* Sets utility which will be responsible for downloading of image.<br />
* Default value -
* {@link com.nostra13.universalimageloader.core.DefaultConfigurationFactory#createImageDownloader(Context)
* DefaultConfigurationFactory.createImageDownloader()}
*/
public Builder imageDownloader(ImageDownloader imageDownloader) {
this.downloader = imageDownloader;
return this;
}
/**
* Sets utility which will be responsible for decoding of image stream.<br />
* Default value -
* {@link com.nostra13.universalimageloader.core.DefaultConfigurationFactory#createImageDecoder(boolean)
* DefaultConfigurationFactory.createImageDecoder()}
*/
public Builder imageDecoder(ImageDecoder imageDecoder) {
this.decoder = imageDecoder;
return this;
}
/**
* Sets default {@linkplain DisplayImageOptions display image options}
* for image displaying. These options will be used for every
* {@linkplain ImageLoader#displayImage(String, android.widget.ImageView)
* image display call} without passing custom
* {@linkplain DisplayImageOptions options}<br />
* Default value - {@link DisplayImageOptions#createSimple() Simple
* options}
*/
public Builder defaultDisplayImageOptions(
DisplayImageOptions defaultDisplayImageOptions) {
this.defaultDisplayImageOptions = defaultDisplayImageOptions;
return this;
}
/**
* Enables detail logging of {@link ImageLoader} work. To prevent detail
* logs don't call this method. Consider
* {@link com.nostra13.universalimageloader.utils.L#disableLogging()} to
* disable ImageLoader logging completely (even error logs)
*/
public Builder writeDebugLogs() {
this.writeLogs = true;
return this;
}
/** Builds configured {@link ImageLoaderConfiguration} object */
public ImageLoaderConfiguration build() {
initEmptyFieldsWithDefaultValues();
return new ImageLoaderConfiguration(this);
}
private void initEmptyFieldsWithDefaultValues() {
if (taskExecutor == null) {
taskExecutor = DefaultConfigurationFactory.createExecutor(
threadPoolSize, threadPriority, tasksProcessingType);
} else {
customExecutor = true;
}
if (taskExecutorForCachedImages == null) {
taskExecutorForCachedImages = DefaultConfigurationFactory
.createExecutor(threadPoolSize, threadPriority,
tasksProcessingType);
} else {
customExecutorForCachedImages = true;
}
if (diskCache == null) {
if (diskCacheFileNameGenerator == null) {
diskCacheFileNameGenerator = DefaultConfigurationFactory
.createFileNameGenerator();
}
diskCache = DefaultConfigurationFactory.createDiskCache(
context, diskCacheFileNameGenerator, diskCacheSize,
diskCacheFileCount);
}
if (memoryCache == null) {
memoryCache = DefaultConfigurationFactory
.createMemoryCache(memoryCacheSize);
}
if (denyCacheImageMultipleSizesInMemory) {
memoryCache = new FuzzyKeyMemoryCache(memoryCache,
MemoryCacheUtils.createFuzzyKeyComparator());
}
if (downloader == null) {
downloader = DefaultConfigurationFactory
.createImageDownloader(context);
}
if (decoder == null) {
decoder = DefaultConfigurationFactory
.createImageDecoder(writeLogs);
}
if (defaultDisplayImageOptions == null) {
defaultDisplayImageOptions = DisplayImageOptions.createSimple();
}
}
}
/**
* Decorator. Prevents downloads from network (throws
* {@link IllegalStateException exception}).<br />
* In most cases this downloader shouldn't be used directly.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @since 1.8.0
*/
private static class NetworkDeniedImageDownloader implements
ImageDownloader {
private final ImageDownloader wrappedDownloader;
public NetworkDeniedImageDownloader(ImageDownloader wrappedDownloader) {
this.wrappedDownloader = wrappedDownloader;
}
@Override
public InputStream getStream(String imageUri, Object extra)
throws IOException {
switch (Scheme.ofUri(imageUri)) {
case HTTP:
case HTTPS:
throw new IllegalStateException();
default:
return wrappedDownloader.getStream(imageUri, extra);
}
}
}
/**
* Decorator. Handles <a
* href="http://code.google.com/p/android/issues/detail?id=6066">this
* problem</a> on slow networks using
* {@link com.nostra13.universalimageloader.core.assist.FlushedInputStream}.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @since 1.8.1
*/
private static class SlowNetworkImageDownloader implements ImageDownloader {
private final ImageDownloader wrappedDownloader;
public SlowNetworkImageDownloader(ImageDownloader wrappedDownloader) {
this.wrappedDownloader = wrappedDownloader;
}
@Override
public InputStream getStream(String imageUri, Object extra)
throws IOException {
InputStream imageStream = wrappedDownloader.getStream(imageUri,
extra);
switch (Scheme.ofUri(imageUri)) {
case HTTP:
case HTTPS:
return new FlushedInputStream(imageStream);
default:
return imageStream;
}
}
}
}