/// <summary>
/// Returns whether the image is stored in the disk cache.
/// Performs disk cache check synchronously. It is not
/// recommended to use this unless you know what exactly
/// you are doing. Disk cache check is a costly operation,
/// the call will block the caller thread until the cache
/// check is completed.
/// </summary>
/// <param name="uri">
/// The uri for the image to be looked up.
/// </param>
/// <param name="cacheChoice">
/// The cacheChoice for the cache to be looked up.
/// </param>
/// <returns>
/// true if the image was found in the disk cache,
/// false otherwise.
/// </returns>
public bool IsInDiskCacheSync(Uri uri, CacheChoice cacheChoice)
{
ImageRequest imageRequest = ImageRequestBuilder
.NewBuilderWithSource(uri)
.SetCacheChoice(cacheChoice)
.Build();
return(IsInDiskCacheSync(imageRequest));
}
/// <summary>
/// Custom Equals method.
/// </summary>
public override bool Equals(object o)
{
if (o.GetType() != typeof(ImageRequest))
{
return(false);
}
ImageRequest request = (ImageRequest)o;
return(SourceUri.Equals(request.SourceUri) &&
CacheChoice.Equals(request.CacheChoice) &&
SourceFile.FullName.Equals(request.SourceFile.FullName));
}
/// <summary>
/// Returns whether the image is stored in the disk cache.
/// Performs disk cache check synchronously. It is not
/// recommended to use this unless you know what exactly
/// you are doing. Disk cache check is a costly operation,
/// the call will block the caller thread until the cache
/// check is completed.
/// </summary>
/// <param name="imageRequest">
/// The image request to be looked up.
/// </param>
/// <returns>
/// true if the image was found in the disk cache,
/// false otherwise.
/// </returns>
public bool IsInDiskCacheSync(ImageRequest imageRequest)
{
ICacheKey cacheKey = _cacheKeyFactory.GetEncodedCacheKey(imageRequest, null);
CacheChoice cacheChoice = imageRequest.CacheChoice;
switch (cacheChoice)
{
case CacheChoice.DEFAULT:
return(_mainBufferedDiskCache.DiskCheckSync(cacheKey));
case CacheChoice.SMALL:
return(_smallImageBufferedDiskCache.DiskCheckSync(cacheKey));
default:
return(false);
}
}
/// <summary>
/// Sets the cache option.
/// Pipeline might use different caches and eviction policies for
/// each image type.
/// </summary>
/// <param name="cacheChoice">The cache choice to set.</param>
/// <returns>The modified builder instance.</returns>
public ImageRequestBuilder SetCacheChoice(CacheChoice cacheChoice)
{
CacheChoice = cacheChoice;
return(this);
}
