private IDataSource <object> SubmitPrefetchRequest(
IProducer <object> producerSequence,
ImageRequest imageRequest,
RequestLevel lowestPermittedRequestLevelOnSubmit,
object callerContext,
int priority)
{
IRequestListener requestListener = GetRequestListenerForRequest(imageRequest);
try
{
RequestLevel lowestPermittedRequestLevel = RequestLevel.GetMax(
imageRequest.LowestPermittedRequestLevel,
lowestPermittedRequestLevelOnSubmit);
SettableProducerContext settableProducerContext = new SettableProducerContext(
imageRequest,
GenerateUniqueFutureId(),
requestListener,
callerContext,
lowestPermittedRequestLevel.Value,
/* isPrefetch */ true,
/* isIntermediateResultExpected */ false,
priority);
return(ProducerToDataSourceAdapter <object> .Create(
producerSequence,
settableProducerContext,
requestListener));
}
catch (Exception exception)
{
return(DataSources.ImmediateFailedDataSource <object>(exception));
}
}
private IDataSource <CloseableReference <T> > SubmitFetchRequest <T>(
IProducer <CloseableReference <T> > producerSequence,
ImageRequest imageRequest,
RequestLevel lowestPermittedRequestLevelOnSubmit,
object callerContext)
{
IRequestListener requestListener = GetRequestListenerForRequest(imageRequest);
try
{
RequestLevel lowestPermittedRequestLevel = RequestLevel.GetMax(
imageRequest.LowestPermittedRequestLevel,
lowestPermittedRequestLevelOnSubmit);
SettableProducerContext settableProducerContext = new SettableProducerContext(
imageRequest,
GenerateUniqueFutureId(),
requestListener,
callerContext,
lowestPermittedRequestLevel.Value,
/* isPrefetch */ false,
imageRequest.IsProgressiveRenderingEnabled ||
!UriUtil.IsNetworkUri(imageRequest.SourceUri),
imageRequest.Priority);
return(CloseableProducerToDataSourceAdapter <T> .Create(
producerSequence,
settableProducerContext,
requestListener));
}
catch (Exception exception)
{
return(DataSources.ImmediateFailedDataSource <CloseableReference <T> >(exception));
}
}
