/// <summary>
/// Handles the <see cref="E:ElementPropertyChanged" /> event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="System.ComponentModel.PropertyChangedEventArgs"/> instance containing the event data.</param>
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
// Xamarin will changed the renderer attached to a view so it is possible that
// an old renderer gets a property updated. In this case the Element will be null.
// In that case, try to clear the property event handler and exit.
if (Element == null)
{
HybridWebViewV2 wv = sender as HybridWebViewV2;
if (wv != null)
{
wv.PropertyChanged -= this.OnElementPropertyChanged;
}
return;
}
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == HybridWebViewV2.UriProperty.PropertyName)
{
this.Load(this.Element.Uri);
}
else if (e.PropertyName == HybridWebViewV2.SourceProperty.PropertyName)
{
LoadSource();
}
else if (e.PropertyName == HybridWebViewV2.CleanupProperty.PropertyName)
{
HandleCleanup();
}
}
/// <summary>
/// Due to issues with the XLabs library, the HybridWebView control will only load if called programatically in code.
/// </summary>
private void createMediaViewerVideo()
{
MediaViewerVideo = new HybridWebViewV2()
{
VerticalOptions = LayoutOptions.FillAndExpand, HorizontalOptions = LayoutOptions.FillAndExpand
};
MediaViewerVideo.Source = Constants.StreamrAPIUrl + "youtubeview";
MediaViewerVideo.SetBinding(HybridWebViewV2.HeightRequestProperty, "MediaHeight");
MediaViewerVideo.SetBinding(HybridWebViewV2.IsVisibleProperty, "IsLoaded");
MediaViewerVideo.BindingContext = thisViewModel;
MediaViewerVideo.InputTransparent = true;
MediaViewer.Children.Add(MediaViewerVideo);
MediaViewer.LowerChild(MediaViewerVideo);
MediaViewerVideo.LoadFinished += new EventHandler(MediaViewerLoaded);
MediaViewerVideo.RegisterCallback("videoPlaying", (arg) =>
{
mewmont.Models.Javascript.PlaybackState playbackState = serializer.Deserialize <mewmont.Models.Javascript.PlaybackState>(arg);
if (playbackState.playbackState != 1)
{
MediaViewerPlaceholder.IsVisible = true;
}
else
{
MediaViewerPlaceholder.IsVisible = false;
}
});
}
private void Unbind(HybridWebViewV2 oldElement)
{
if (oldElement != null)
{
oldElement.JavaScriptLoadRequested -= OnInjectRequest;
oldElement.LoadFromContentRequested -= LoadFromContent;
oldElement.LoadContentRequested -= LoadContent;
oldElement.PropertyChanged -= this.OnElementPropertyChanged;
}
}
