public void StartDownload(QueuedDownload download, bool resume = false, bool forceNow = false)
{
if (queuedDownloads.Contains(download) || startedDownloads.Keys.Contains(download))
{
return;
}
if (resume)
{
queuedDownloads.Insert(0, download);
}
else if (!forceNow)
{
queuedDownloads.Add(download);
_downloadEnqueuedEvent.OnNext(download);
}
if (forceNow)
{
QueuedDownload nextDownload = null;
if (startedDownloads.Count >= KMaxSimultaneousDownloads)
{
nextDownload = startedDownloads.Keys.First();
}
IDownloadCancelHandle cancelHandle = StartEnqueuedDownload(download);
startedDownloads.Add(download, cancelHandle);
if (nextDownload != null)
{
StopDownload(nextDownload, true);
}
}
else
{
StartEnqueuedItemsIfPossible();
}
}
private void StartEnqueuedItemsIfPossible()
{
while (startedDownloads.Count < KMaxSimultaneousDownloads && queuedDownloads.Count > 0)
{
QueuedDownload download = queuedDownloads.PopFirst();
IDownloadCancelHandle cancelHandle = StartEnqueuedDownload(download);
startedDownloads.Add(download, cancelHandle);
}
}
