/// <summary>
/// A utility method that will pipe an Observable to an ICommand (i.e.
/// it will first call its CanExecute with the provided value, then if
/// the command can be executed, Execute() will be called)
/// </summary>
/// <param name="command">The command to be executed.</param>
/// <returns>An object that when disposes, disconnects the Observable
/// from the command.</returns>
public static IDisposable InvokeCommand <T, TResult>(this IObservable <T> This, IReactiveCommand <TResult> command)
{
return(This.Throttle(x => command.CanExecuteObservable.StartWith(command.CanExecute(x)).Where(b => b))
.Select(x => command.ExecuteAsync(x).Catch(Observable.Empty <TResult>()))
.Switch()
.Subscribe());
}
public static void ExecuteIfCan(this IReactiveCommand @this, object o)
{
if (@this.CanExecute(o))
{
@this.Execute(o);
}
}
/// <summary>
/// A utility method that will pipe an Observable to an ICommand (i.e.
/// it will first call its CanExecute with the provided value, then if
/// the command can be executed, Execute() will be called)
/// </summary>
/// <param name="command">The command to be executed.</param>
/// <returns>An object that when disposes, disconnects the Observable
/// from the command.</returns>
public static IDisposable InvokeCommand <T>(this IObservable <T> This, IReactiveCommand command)
{
return(This.Throttle(x => command.CanExecuteObservable.StartWith(command.CanExecute(x)).Where(b => b))
.Subscribe(x => {
command.Execute(x);
}));
}
private void SongDoubleClick(object sender, MouseButtonEventArgs e)
{
IReactiveCommand command = this.ViewModel.DefaultPlaybackCommand;
if (e.LeftButton == MouseButtonState.Pressed && command.CanExecute(null))
{
command.Execute(null);
}
}
private void SongKeyPressed(object sender, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
IReactiveCommand command = this.ViewModel.DefaultPlaybackCommand;
if (command.CanExecute(null))
{
command.Execute(null);
}
e.Handled = true;
}
}