internal void Dequeue(object obj)
{
if (obj == null)
{
return;
}
var items = (obj as ObservableCollection <object>).Cast <DownloaderObjectModel>().ToArray();
foreach (var item in items)
{
item.Dequeue();
}
QueueProcessor.Remove(items);
}
private void Redownload(object obj)
{
var items = (obj as ObservableCollection <object>).Cast <DownloaderObjectModel>().ToArray();
var tasks = new List <Task>();
var forceEnqueue = false;
var total = items.Count();
if (total > Settings.Default.MaxParallelDownloads)
{
forceEnqueue = true;
}
foreach (var item in items)
{
if (File.Exists(item.Destination))
{
try
{
File.Delete(item.Destination);
}
catch (IOException)
{
continue;
}
}
if (forceEnqueue)
{
item.Enqueue();
QueueProcessor.Add(item);
}
else
{
item.Dequeue();
QueueProcessor.Remove(item);
tasks.Add(item.StartAsync());
}
}
if (forceEnqueue)
{
Task.Run(async() => await QueueProcessor.StartAsync());
}
else
{
Task.Run(async() => await Task.WhenAll(tasks.ToArray()));
}
}
internal void Start(object obj)
{
var items = (obj as ObservableCollection <object>).Cast <DownloaderObjectModel>().ToArray();
var tasks = new List <Task>();
var forceEnqueue = false;
var total = items.Count();
if (total > Settings.Default.MaxParallelDownloads)
{
forceEnqueue = true;
}
foreach (var item in items)
{
if (item.IsBeingDownloaded)
{
continue;
}
if (forceEnqueue)
{
item.Enqueue();
QueueProcessor.Add(item);
}
else
{
item.Dequeue();
QueueProcessor.Remove(item);
tasks.Add(item.StartAsync());
}
}
if (forceEnqueue)
{
Task.Run(async() => await QueueProcessor.StartAsync());
}
else
{
Task.Run(async() => await Task.WhenAll(tasks.ToArray()));
}
}
private async Task RemoveObjectsAsync(bool delete, params DownloaderObjectModel[] objects)
{
await _semaphoreUpdatingList.WaitAsync();
var dequeueThese = new List <IQueueable>();
var itemsProcessed = new List <DownloaderObjectModel>();
var total = objects.Count();
_ctsUpdatingList = new CancellationTokenSource();
var ct = _ctsUpdatingList.Token;
RaisePropertyChanged(nameof(this.IsBackgroundWorking));
int progress;
string primaryStatus = "Removing ";
if (delete)
{
primaryStatus = "Deleting ";
}
for (int i = 0; i < total; i++)
{
progress = (int)((double)(i + 1) / total * 100);
this.Status = primaryStatus + (i + 1) + " of " + total + ": " + objects[i].Name;
this.Progress = progress;
RaisePropertyChanged(nameof(this.Status));
RaisePropertyChanged(nameof(this.Progress));
if (objects[i] == null)
{
continue;
}
if (objects[i].IsQueued)
{
objects[i].Dequeue();
dequeueThese.Add(objects[i]);
}
if (objects[i].IsBeingDownloaded)
{
await objects[i].CancelAsync();
}
else
{
// delete all UNFINISHED downloads forcefully
if (objects[i].Status != DownloadStatus.Finished || delete)
{
try
{
if (objects[i].Status == DownloadStatus.Finished)
{
FileSystem.DeleteFile(
objects[i].Destination,
UIOption.OnlyErrorDialogs,
RecycleOption.SendToRecycleBin);
}
else
{
File.Delete(objects[i].TempDestination);
}
}
catch { }
}
}
itemsProcessed.Add(objects[i]);
if (ct.IsCancellationRequested)
{
break;
}
}
this.Status = "Delisting...";
RaisePropertyChanged(nameof(this.Status));
Application.Current.Dispatcher.Invoke(() =>
{
Monitor.Enter(_lockDownloadItemsList);
for (int i = 0; i < itemsProcessed.Count(); i++)
{
DownloadItemsList.Remove(itemsProcessed[i]);
}
Monitor.Exit(_lockDownloadItemsList);
});
if (dequeueThese.Count > 0)
{
this.Status = "Refreshing queue...";
RaisePropertyChanged(nameof(this.Status));
QueueProcessor.Remove(dequeueThese.ToArray());
}
_ctsUpdatingList = null;
this.Status = "Ready";
this.Progress = 0;
RaisePropertyChanged(nameof(this.Status));
RaisePropertyChanged(nameof(this.Progress));
RaisePropertyChanged(nameof(this.IsBackgroundWorking));
_semaphoreUpdatingList.Release();
}