private void InitializeCommands()
{
PauseCommand = new RelayCommand <IDownloadingFile>(
item => OperateTaskToken(item, token => token.Suspend(), "Pause task failed."), // TODO: [I18N]
item => item.DownloadInfo.Status == TransferStatus.Transferring ||
item.DownloadInfo.Status == TransferStatus.Ready);
StartCommand = new RelayCommand <IDownloadingFile>(
item => OperateTaskToken(item, token => token.Ready(), "Restart task failed."),
item => item.DownloadInfo.Status == TransferStatus.Suspended);
StartForceCommand = new RelayCommand <IDownloadingFile>(
item => OperateTaskToken(item, token => token.AsNext(), "Jump queue failed."),
item => item.DownloadInfo.Status != TransferStatus.Transferring);
CancelCommand = new RelayCommand <IDownloadingFile>(
item => OperateTaskToken(item, token => token.Dispose(), "Cancel task failed."));
PauseAllCommand = new RelayCommand(
() => TransferTasks.ForEach(item => PauseCommand.Invoke(item)),
() => TransferTasks?.Any() ?? false);
CancelAllCommand = new RelayCommand(
() => TransferTasks.ForEach(item => CancelCommand.Invoke(item)),
() => TransferTasks?.Any() ?? false);
}
public DownloadingViewModel(IUnityContainer container) : base(container)
{
PauseAllCommand = new RelayCommand(() =>
{
foreach (var task in TransferTasks)
{
if (PauseCommand.CanExecute(task))
{
PauseCommand.Execute(task);
}
}
},
() => TransferTasks?.Any() ?? false);
CancelAllCommand = new RelayCommand(() =>
{
foreach (var task in TransferTasks)
{
if (CancelCommand.CanExecute(task))
{
CancelCommand.Execute(task);
}
}
},
() => TransferTasks?.Any() ?? false);
}
private void InitializeTransferItem(IDownloadingFile item)
{
var previousStatus = item.DownloadInfo.Status;
item.DownloadInfo
.Where(notification =>
{
var result = notification.Status != previousStatus;
previousStatus = notification.Status;
return(result);
})
.ObserveOn(Dispatcher)
.Subscribe(_ =>
{
TransferTasks.Remove(item);
TransferTasks.Add(item);
});
item.DownloadInfo
.Where(notification => notification.Status == TransferStatus.Disposed)
.ObserveOn(Dispatcher)
.Subscribe(
_ => TransferTasks.Remove(item),
() =>
{
TransferTasks.Remove(item);
EventAggregator
.GetEvent <TransferItemCompletedEvent>()
.Publish(LocalDiskFile.Create(item));
});
TransferTasks.Add(item);
}
public DownloadingViewModel(IUnityContainer container) : base(container)
{
PauseAllCommand = new RelayCommand(() => TransferTasks.ForEach(item =>
{
if (PauseCommand.CanExecute(item))
{
PauseCommand.Execute(item);
}
}),
() => TransferTasks?.Any() ?? false);
CancelAllCommand = new RelayCommand(() => TransferTasks.ForEach(item =>
{
if (CancelCommand.CanExecute(item))
{
CancelCommand.Execute(item);
}
}),
() => TransferTasks?.Any() ?? false);
}
