protected override void OnAttached()
{
_visualHost = FindVisualHost();
if (_visualHost == null)
{
throw new InvalidOperationException("Visual host wasn't found in the data context hierarchy.");
}
_visualHost.Visual = AssociatedObject;
base.OnAttached();
}
private void OnWindowShown(IVisualHost window)
{
_windowProvider.WindowShown -= OnWindowShown;
_window = window;
_imageProvider.SetVisualHost(window);
if (window is Control ctrl && ctrl.Controls.Count == 1)
{
_windowControl = ctrl.Controls[0];
Container.ResolveTo(_windowControl);
}
private IVisualHost FindVisualHost()
{
DependencyObject targetObject = AssociatedObject;
IVisualHost visualHost = AssociatedObject.DataContext as IVisualHost;
while (targetObject != null)
{
if (visualHost != null)
{
return(visualHost);
}
targetObject = VisualTreeHelper.GetParent(targetObject);
}
return(null);
}
private void OnWindowShown(IVisualHost window)
{
_inputContext = new InputContext(window, new BaseInputHandler(RenderContext));
}
private void OnWindowShown(IVisualHost visualHost)
{
_visualHost = visualHost;
_windowProvider.WindowShown -= OnWindowShown;
}
public void SetVisualHost(IVisualHost visualHost)
{
_window = visualHost;
}