Make MediaPlayerElement.MediaPlayer properties accessible via XAML #3425
Description
Describe the problem this feature would solve
When using a MediaPlayerElement in XAML, there were a couple properties on MediaPlayerElement's MediaPlayer instance I wanted to set/bind in XAML.
The properties I needed to set were IsLoopingEnabled and IsMuted.
<MediaPlayerElement IsMuted="True" IsLoopingEnabled="True"/>
However, these properties aren't available on MediaPlayerElement.
Describe the solution
The solution I ended up creating was using behaviors to set the properties on the MediaPlayer. Using them in XAML would look like this:
<MediaPlayerElement>
<Interactivity:Interaction.Behaviors>
<local:AutoRepeatBehavior AutoRepeat="True"/>
</Interactivity:Interaction.Behaviors>
</MediaPlayerElement>
public class AutoRepeatBehavior : BehaviorBase<MediaPlayerElement>
{
public bool AutoRepeat
{
get { return (bool)GetValue(AutoRepeatProperty); }
set { SetValue(AutoRepeatProperty, value); }
}
public static readonly DependencyProperty AutoRepeatProperty =
DependencyProperty.Register(
"AutoRepeat",
typeof(bool),
typeof(AutoRepeatBehavior),
new PropertyMetadata(false, new PropertyChangedCallback(AutoRepeatChanged))
);
protected override bool Initialize()
{
AssociatedObject.Loaded += AssociatedObject_Loaded;
return base.Initialize();
}
private void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
{
AssociatedObject.MediaPlayer.IsLoopingEnabled = AutoRepeat;
AssociatedObject.Loaded -= AssociatedObject_Loaded;
}
private static void AutoRepeatChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is AutoRepeatBehavior behavior
&& behavior.AssociatedObject is MediaPlayerElement mpe
&& mpe.MediaPlayer is Windows.Media.Playback.MediaPlayer mp)
mp.IsLoopingEnabled = (bool)e.NewValue;
}
}
And something similar can be done for the IsMuted property
Describe alternatives you've considered
Ideally it would be great if there was a built-in solution to access these properties, but I don't know of any alternatives at this time.