private void OnOpenCompletedEventHandler(APdfRequest <OpenArguments, object> .InOutTuple o, PdfViewerException ex)
{
if (ex == null)
{
// Default page order - normal behaviour
_pageOrder = new List <int>(Enumerable.Range(1, document.PageCount));
InversePageOrder = _pageOrder;
}
else
{
// opening request failed doing nothing
}
}
private void OnCloseCompletedEventHandler(APdfRequest <bool, object> .InOutTuple o, PdfViewerException ex)
{
if (ex == null)
{
// invalidate caches
pageCache.InvalidateCache();
textFragmentCache.InvalidateCache();
thumbnailCache.InvalidateCache();
}
else
{
// closing failed. keep caches
}
}
private APdfRequest <Arguments, ObjectToCache> loadAsync(Arguments args)
{
lock (dictLock)
{
if (!pendingRequests.ContainsKey(args) && (!dict.ContainsKey(args) || guessSet.Contains(args)))
{
APdfRequest <Arguments, ObjectToCache> request = loadObjectAsyncDelegate(args);
pendingRequests.Add(args, request);
request.Completed += AsyncLoadCompleted;
return(request);
}
return(pendingRequests.ContainsKey(args) ? pendingRequests[args] : null);
}
}
public void AsyncLoadCompleted(APdfRequest <Arguments, ObjectToCache> .InOutTuple result, PdfViewerCSharpAPI.Utilities.PdfViewerException ex)
{
if (ex != null)
{
return;
}
//only add the loaded values if there is a pending request for it
if (pendingRequests.ContainsKey(result.arguments))
{
//do not load if we have already loaded the same key/value combination
if (objectEquatorDelegate == null || !dict.ContainsKey(result.arguments) || !objectEquatorDelegate(dict[result.arguments], result.output))
{
LoadCompleted(result.arguments, result.output);
}
}
}
public void CancelPendingRequest(APdfRequest <Arguments, ObjectToCache> request)
{
pendingRequests.Remove(request.InputArguments);
}
