private static void HandleGetResponseResult(IAsyncResult result)
{
var pendingResponse = result;
PriorityQueue.AddWorkItem(() =>
{
var responseState = (ResponseState)pendingResponse.AsyncState;
try
{
var response = responseState.WebRequest.EndGetResponse(pendingResponse);
byte[] bytes = null;
using (var stream = response.GetResponseStream())
{
bytes = new byte[stream.Length];
stream.Read(bytes, 0, (int)stream.Length);
}
var pc = new PendingCompletion(responseState.Image, responseState.Uri, new MemoryStream(bytes));
PriorityQueue.AddStorageWorkItem(() => _iso.Write(responseState.Uri, bytes));
PriorityQueue.AddUiWorkItem(() => HandleCompletion(pc));
//System.Diagnostics.Debug.WriteLine("Saving to the iso image cache...");
}
catch (WebException)
{
// Ignore web exceptions (ex: not found)
}
catch
{
// Other exceptions...
}
});
}
private static void ProcessTransfer(PendingRequest pendingRequest)
{
if (pendingRequest == null || pendingRequest.Uri == null)
{
return;
}
try
{
if (pendingRequest.Uri.IsAbsoluteUri)
{
_iso.GetItem(pendingRequest.Uri, (img, exc, stat) =>
{
if (stat == IsoStoreCache.ItemCacheStatus.Hit)
{
var ms = new MemoryStream(img);
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, ms);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
else
{
// Download from network
var webRequest = HttpWebRequest.CreateHttp(pendingRequest.Uri);
webRequest.AllowReadStreamBuffering = true; // Don't want to block this thread or the UI thread on network access
webRequest.BeginGetResponse(HandleGetResponseResult, new ResponseState(webRequest, pendingRequest.Image, pendingRequest.Uri));
}
});
}
else
{
// Load from application (must have "Build Action"="Content")
var originalUriString = pendingRequest.Uri.OriginalString;
// Trim leading '/' to avoid problems
var resourceStreamUri = originalUriString.StartsWith("/", StringComparison.Ordinal) ? new Uri(originalUriString.TrimStart('/'), UriKind.Relative) : pendingRequest.Uri;
// Enqueue resource stream for completion
var streamResourceInfo = Application.GetResourceStream(resourceStreamUri);
if (null != streamResourceInfo)
{
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, streamResourceInfo.Stream);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
}
}
catch (NullReferenceException)
{
// Trying to address user-found bugs here.
}
}
private static PendingCompletion ProcessCompletion(IAsyncResult pendingResponse)
{
HttpWebResponse response = null;
PendingCompletion completed;
var responseState = (PrivateWebUserState)pendingResponse.AsyncState;
try
{
response = (HttpWebResponse)responseState.Request.EndGetResponse(pendingResponse);
var stream = response.GetResponseStream();
completed = new PendingCompletion(responseState.Data, stream, null, response);
}
catch (Exception error)
{
if (response != null)
response.Close();
completed = new PendingCompletion(responseState.Data, null, error, null);
}
return completed;
}
private void PrivateCompletionProcessor(PendingCompletion completion)
{
if (completion.Error != null)
{
WebServiceEventArgs response;
if (completion.Error is WebException)
{
response = GenerateFromException(completion.Error as WebException, HasInternetConnectivity, completion.RequestData.UserState);
}
else
{
response = new WebServiceEventArgs(WebApiServerStatus.Error, completion.Error, String.Empty, completion.RequestData.UserState);
}
Responser(completion.RequestData, response);
}
else // Read data from stream and continue
{
WebServiceEventArgs finalResponse;
using (var stream = completion.Result)
{
using (var streamReader = new StreamReader(stream))
{
while (!streamReader.EndOfStream)
{
StringBuilder.Append(streamReader.ReadLine());
}
var stringResult = StringBuilder.ToString();
finalResponse = new WebServiceEventArgs(WebApiServerStatus.Success, null, stringResult, completion.RequestData.UserState);
}
}
completion.Response.Close();
StringBuilder.Flush();
Responser(completion.RequestData, finalResponse);
}
}
private static void ProcessTransfer(PendingRequest pendingRequest)
{
if (pendingRequest == null || pendingRequest.Uri == null)
{
return;
}
try
{
if (pendingRequest.Uri.IsAbsoluteUri)
{
_iso.GetItem(pendingRequest.Uri, (img, exc, stat) =>
{
if (stat == IsoStoreCache.ItemCacheStatus.Hit)
{
var ms = new MemoryStream(img);
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, ms);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
else
{
// Download from network
var webRequest = HttpWebRequest.CreateHttp(pendingRequest.Uri);
webRequest.AllowReadStreamBuffering = true; // Don't want to block this thread or the UI thread on network access
webRequest.BeginGetResponse(HandleGetResponseResult, new ResponseState(webRequest, pendingRequest.Image, pendingRequest.Uri));
}
});
}
else
{
// Load from application (must have "Build Action"="Content")
var originalUriString = pendingRequest.Uri.OriginalString;
// Trim leading '/' to avoid problems
var resourceStreamUri = originalUriString.StartsWith("/", StringComparison.Ordinal) ? new Uri(originalUriString.TrimStart('/'), UriKind.Relative) : pendingRequest.Uri;
// Enqueue resource stream for completion
var streamResourceInfo = Application.GetResourceStream(resourceStreamUri);
if (null != streamResourceInfo)
{
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, streamResourceInfo.Stream);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
}
}
catch (NullReferenceException)
{
// Trying to address user-found bugs here.
}
}
private static void HandleCompletion(PendingCompletion pendingCompletion)
{
// fadeClear, clearFade, clear, fadeRemoveSiblings are all specific
// side effects that met my needs when building 4th & Mayor. At
// this time I'm keeping these around.
var bitmap = new BitmapImage();
try
{
bitmap.SetSource(pendingCompletion.Stream);
pendingCompletion.Image.Source = bitmap;
var tag = pendingCompletion.Image.Tag as string;
if (tag != null && tag == "clear")
{
var img = pendingCompletion.Image;
ClearParentBackground(img);
}
else if (tag != null && (tag == "fadeClear" || tag == "clearFade"))
{
var img = pendingCompletion.Image;
OpacityAnimator oa = null;
OpacityAnimator.EnsureAnimator(img, ref oa);
if (img != null)
{
img.Opacity = 0;
oa.GoTo(1.0, new Duration(TimeSpan.FromSeconds(1)), () =>
{
ClearParentBackground(img);
oa = null;
});
}
}
else if (tag != null && tag == "fadeRemoveSiblings")
{
// Specialized for badge display.
var img = pendingCompletion.Image;
OpacityAnimator oa = null;
OpacityAnimator.EnsureAnimator(img, ref oa);
if (img != null)
{
img.Opacity = 0;
oa.GoTo(1.0, new Duration(TimeSpan.FromSeconds(1)), () =>
{
ClearNonImageSiblings(img);
oa = null;
});
}
}
}
catch (Exception)
{
// Ignore image decode exceptions (ex: invalid image)
// TODO: Consider what to do here.
//QuietWatson.ReportException(ex);
}
finally
{
// Dispose of response stream
if (pendingCompletion.Stream != null)
{
pendingCompletion.Stream.Dispose();
}
}
}
private static void HandleGetResponseResult(IAsyncResult result)
{
var pendingResponse = result;
PriorityQueue.AddWorkItem(() =>
{
var responseState = (ResponseState)pendingResponse.AsyncState;
try
{
var response = responseState.WebRequest.EndGetResponse(pendingResponse);
byte[] bytes = null;
using (var stream = response.GetResponseStream())
{
bytes = new byte[stream.Length];
stream.Read(bytes, 0, (int)stream.Length);
}
var pc = new PendingCompletion(responseState.Image, responseState.Uri, new MemoryStream(bytes));
PriorityQueue.AddStorageWorkItem(() =>_iso.Write(responseState.Uri, bytes));
PriorityQueue.AddUiWorkItem(() => HandleCompletion(pc));
//System.Diagnostics.Debug.WriteLine("Saving to the iso image cache...");
}
catch (WebException)
{
// Ignore web exceptions (ex: not found)
}
catch
{
// Other exceptions...
}
});
}
private static void HandleCompletion(PendingCompletion pendingCompletion)
{
// fadeClear, clearFade, clear, fadeRemoveSiblings are all specific
// side effects that met my needs when building 4th & Mayor. At
// this time I'm keeping these around.
var bitmap = new BitmapImage();
try
{
bitmap.SetSource(pendingCompletion.Stream);
pendingCompletion.Image.Source = bitmap;
var tag = pendingCompletion.Image.Tag as string;
if (tag != null && tag == "clear")
{
var img = pendingCompletion.Image;
ClearParentBackground(img);
}
else if (tag != null && (tag == "fadeClear" || tag == "clearFade"))
{
var img = pendingCompletion.Image;
OpacityAnimator oa = null;
OpacityAnimator.EnsureAnimator(img, ref oa);
if (img != null)
{
img.Opacity = 0;
oa.GoTo(1.0, new Duration(TimeSpan.FromSeconds(1)), () =>
{
ClearParentBackground(img);
oa = null;
});
}
}
else if (tag != null && tag == "fadeRemoveSiblings")
{
// Specialized for badge display.
var img = pendingCompletion.Image;
OpacityAnimator oa = null;
OpacityAnimator.EnsureAnimator(img, ref oa);
if (img != null)
{
img.Opacity = 0;
oa.GoTo(1.0, new Duration(TimeSpan.FromSeconds(1)), () =>
{
ClearNonImageSiblings(img);
oa = null;
});
}
}
}
catch (Exception)
{
// Ignore image decode exceptions (ex: invalid image)
// TODO: Consider what to do here.
//QuietWatson.ReportException(ex);
}
finally
{
// Dispose of response stream
if (pendingCompletion.Stream != null)
{
pendingCompletion.Stream.Dispose();
}
}
}