protected override Task BuildSelectedValue(bool withNotifyPropertyChanged = true)
{
if (CTS != null)
{
CTS.Cancel(false);
}
CTS = new CancellationTokenSource();
return(Task.Run(() =>
{
_selectedValue = new ApplyedProductParameter
{
Id = this.Id,
DataType = this.DataType,
Values = Items.Where(x => x.Selected).Select(y => new ApplyedProductParameterValue {
Id = y.Id
}).ToList()
};
if (withNotifyPropertyChanged)
{
RaisePropertyChanged(() => SelectedValue);
}
}, CTS.Token));
}
public void Cancel()
{
if (State == TransferStates.CANCELED)
{
return;
}
State = TransferStates.CANCELED;
CTS?.Cancel();
Message = "Upload was canceled";
}
/// <summary>
/// 開放処理。
/// </summary>
public void Dispose()
{
if (CTS == null)
{
return;
}
CTS.Cancel();
CTS.Dispose();
CTS = null;
}
public MainPageViewModel(INavigationService navigationService,
IPageDialogService dialogService)
{
_navigationService = navigationService;
_dialogService = dialogService;
GetLocationCommand = new DelegateCommand(async() =>
{
if (GeolocationAccuracySelected == null)
{
await _dialogService.DisplayAlertAsync("錯誤", "請選擇GPS定位精確度", "確定");
return;
}
CTS = new CancellationTokenSource();
Token = CTS.Token;
GetLocation = true;
try
{
var request = new GeolocationRequest(GeolocationAccuracySelected.Item, TimeSpan.FromSeconds(10));
var location = await Geolocation.GetLocationAsync(request, Token);
if (location != null)
{
YourLocation = $"Latitude 緯度 : {location.Latitude}, Longitude 經度 : {location.Longitude}";
}
}
catch (FeatureNotSupportedException fnsEx)
{
// 處理裝置不支援這項功能的例外異常
}
catch (PermissionException pEx)
{
// 處理關於權限上的例外異常
}
catch (AggregateException ae)
{
// 處理取消的例外異常
}
catch (Exception ex)
{
// 無法取得該GPS位置之例外異常
}
GetLocation = false;
});
CancelLocationCommand = new DelegateCommand(() =>
{
GetLocation = false;
CTS.Cancel();
});
}
protected Task BuildSelectedValue()
{
if (CTS != null)
{
CTS.Cancel(false);
}
CTS = new CancellationTokenSource();
return(Task.Run(() =>
{
SelectedValue = new ApplyedFilter
{
Id = this.Id,
DataType = this.DataType,
Values = Items.Where(x => x.Selected).Select(y => new ApplyedFilterValue {
Id = y.Id
}).ToList()
};
}, CTS.Token));
}
protected Task BuildSelectedValue(PickerCollectionItemVM item)
{
if (CTS != null)
{
CTS.Cancel(false);
}
CTS = new CancellationTokenSource();
return(Task.Run(() =>
{
SelectedValue = new ApplyedProductParameter
{
Id = this.Id,
DataType = this.DataType,
Values = new List <ApplyedProductParameterValue> {
new ApplyedProductParameterValue {
Id = item.Id
}
}
};
}, CTS.Token));
}
private static void Console_CancelKeyPress(object sender, ConsoleCancelEventArgs e)
{
CTS.Cancel();
}
/// Cancel communication throughout pipe
public virtual void Disconnect()
{
Connected = false;
CTS?.Cancel();
}
public void LoadRom(string romFile, bool prompt)
{
try
{
CTS?.Cancel();
Emulator?.Stop();
DisplayTask?.Wait();
if (prompt)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Title = Resources.OpenTitle;
if (File.Exists(romFile))
{
dialog.InitialDirectory = Path.GetDirectoryName(romFile);
dialog.FileName = Path.GetFileName(romFile);
}
romFile = dialog.ShowDialog() == DialogResult.OK ? dialog.FileName : "";
}
if (!string.IsNullOrWhiteSpace(romFile) && File.Exists(romFile))
{
LastRomFile = romFile;
Log($"Loading ROM: {romFile}", LogLevel.Info);
byte[] romData = File.ReadAllBytes(romFile);
Emulator = new Chip8Emu(this, romData);
DisplayBuffer = new bool[Chip8Emu.DisplayColumns, Chip8Emu.DisplayRows];
Emulator.TryConfigureQuirks();
Log("Ready.", LogLevel.Info);
}
CTS = new CancellationTokenSource();
Emulator?.Start(CTS);
DisplayTask = Task.Factory.StartNew(() =>
{
Stopwatch sw = new Stopwatch();
sw.Start();
while (!CTS.Token.IsCancellationRequested)
{
if (sw.Elapsed >= ViewDelay)
{
DrawDisplay();
sw.Restart();
}
Thread.Yield();
}
});
}
catch (Exception ex)
{
HandleException(ex);
}
finally
{
UpdateConfig();
}
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
CTS?.Cancel();
Emulator?.Stop();
DisplayTask?.Wait();
}
