public DialogButtonViewModel(UICommand customUICommand, ICommand command) {
this.UICommand = customUICommand;
this.Content = customUICommand.Caption;
this.Command = command;
CanExecute = true;
if(UICommand.Command != null) {
CanExecute = UICommand.Command.CanExecute(null);
UICommand.Command.CanExecuteChanged += CanExecuteChanged;
}
}
public async Task<UICommand> ShowAsync() {
Popup = new Popup();
Popup.Width = Window.Current.CoreWindow.Bounds.Width;
Popup.Height = Window.Current.CoreWindow.Bounds.Height;
Window.Current.CoreWindow.SizeChanged += CoreWindow_SizeChanged;
Result = null;
DialogResultCommand = new DevExpress.Mvvm.DelegateCommand<object>(OnDialogResult);
List<DialogButtonViewModel> buttons = new List<DialogButtonViewModel>();
foreach(UICommand command in CommandsSource) {
buttons.Add(new DialogButtonViewModel(command, DialogResultCommand));
}
Buttons = buttons;
Popup.Child = this;
Width = Popup.Width;
Height = Popup.Height;
KeyDown += DialogContentControl_KeyDown;
Popup.VerticalOffset = 0;
Popup.HorizontalOffset = 0;
Popup.IsOpen = true;
Focus(FocusState.Programmatic);
await WaitPopupClosing();
return Result;
}
void OnDialogResult(object parameter) {
if(!Close())
return;
if(parameter is UICommand) {
UICommand command = (UICommand)parameter;
command.Command.If(x => x.CanExecute(command)).Do(x => x.Execute(command));
Result = command;
}
}
public DialogButtonViewModel(UICommand customUICommand, ICommand command) {
this.UICommand = customUICommand;
this.Content = customUICommand.Caption;
this.Command = command;
}