public Task <bool> ShowPicker(IDialogPickerViewModel source)
{
var tcs = new TaskCompletionSource <bool>();
var dialog = new PickerDialog <PickerDialogViewModel>();
var pickerViewModel = new PickerDialogViewModel(dialog, source);
dialog
.Show(
source.Title,
callback: v => tcs.TrySetResult(true),
pickerViewModel,
pickerCallback: v =>
{
foreach (var selectedItem in source.SelectedItems)
{
v.Select(selectedItem.Row, selectedItem.Component, animated: false);
}
},
cancelCallback: () => tcs.TrySetResult(false));
return(tcs.Task);
}
private void _previewBackground(Rectangle previewPanel)
{
if (_isShown)
{
return;
}
_isShown = true;
PickerDialog dialog = new PickerDialog(Color);
dialog.Owner = WpfUtilities.TopWindow;
InitialColor = Color.ToGrfColor();
Rectangle previewPanelClosure = previewPanel;
dialog.PickerControl.ColorChanged += delegate(object s, Color newColor) {
previewPanelClosure.Fill = new SolidColorBrush(newColor);
OnPreviewColorChanged(newColor);
};
dialog.Closed += delegate {
_isShown = false;
if (dialog.DialogResult == false)
{
previewPanel.Fill = new SolidColorBrush(dialog.PickerControl.InitialColor);
OnPreviewColorChanged(dialog.PickerControl.InitialColor);
}
else if (dialog.DialogResult)
{
OnColorChanged(dialog.PickerControl.SelectedColor);
}
};
dialog.Show();
}