private async Task LoadDownloads()
{
Downloads.Clear();
DownloadsState = ContentState.Loading;
while (_downloadsService.IsLoading)
{
await Task.Delay(1000);
}
var downloads = _downloadsService.GetAllDownloads();
if (downloads == null)
{
DownloadsState = ContentState.NoData;
return;
}
for (int i = 0; i < downloads.Length; i++)
{
Downloads.Add(new TransferItemViewModel(downloads[i], _locService));
}
DownloadsState = ContentState.Normal;
}
private void AllDownloadsComplete()
{
FilesToDownload = 0;
AreDownloadStartpossible = false;
AreDownloadDetailsShown = false;
AreDownloadListShow = false;
Downloads.Clear();
}
public DownloadsViewModel()
{
Title = "Downloads";
LoadItemsCommand = new Command(() => {
IsBusy = true;
Downloads.Clear();
RefreshDownloads();
IsBusy = false;
});
}
protected override void OnClosing(DataEventArgs dataEventArgs)
{
base.OnClosing(dataEventArgs);
foreach (var md in Downloads)
{
md.OnInitialized -= ModInitialized;
md.OnModDownloaded -= ModDownloaded;
md.OnModDownloadError -= DownloadError;
if (cancellationTokenSource.IsCancellationRequested)
{
md.DownloadedStream?.Close();
}
}
Downloads.Clear(); // Ensure we have no references in event this window doesn't clean up for some reason (memory analyzer shows it is not reliable unless another window appears)
}
/// <summary>
/// Downloads the provided List of Feeds.
/// You cannot call download while downloads are in progress.
/// </summary>
/// <param name="feeds">List of feeds to download.</param>
public void Download(IList <Feed> feeds)
{
// Clear any leftover stored articles/feeds in Downloads and _allRequests.
Downloads.Clear();
_allRequests.Clear();
// Set the timer for timeouts if parsing syndication feeds.
if (_parser is SynFeedParser)
{
int timeLimit;
if (Settings.InitialLaunchSetting)
{
timeLimit = 20000; // 20 second limit for initial launch.
}
else
{
timeLimit = 7500; // Otherwise, 7.5 second time limit.
}
TimerCallback tc = new TimerCallback(TimeoutConnections);
_timeout = new Timer(tc, this, timeLimit, Timeout.Infinite);
}
if (null != feeds && feeds.Count > 0)
{
lock (_lockObject)
{
_numOfRequests += feeds.Count;
}
IsDownloading = true;
// Download each separate feed.
foreach (Feed feed in feeds)
{
string feedURI = feed.FeedBaseURI;
if (null != feedURI)
{
HttpWebRequest feedRequest = HttpWebRequest.Create(feedURI) as HttpWebRequest;
// Check if the application has been set to wifi-only or not.
if (WifiOnly)
{
feedRequest.SetNetworkRequirement(NetworkSelectionCharacteristics.NonCellular);
}
if (null != feedRequest)
{
RequestState feedState = new RequestState()
{
// Change the owner to the parent HTTPWebRequest.
Request = feedRequest,
// Change the argument to be the current feed to be downloaded.
Argument = feed,
};
// Begin download.
feedRequest.BeginGetResponse(ResponseCallback, feedState);
// Keep track of the download.
_allRequests.Add(feed, feedRequest);
}
}
}
}
}
