/// <summary>
/// Called after the trigger is attached to an AssociatedObject.
/// </summary>
protected override void OnAttached()
{
base.OnAttached();
this.visualStateChanged = this.Source.DataContext as INotifyVisualStateChanged;
// TODO: Walk up the visual tree to potentially find a parent INotifyVisualStateChanged
if (this.visualStateChanged == null)
{
throw new ArgumentException("Cannot attach to FramworkElement without VisualStateChanged as DataContext.");
}
this.visualStateChanged.VisualStateChanged += this.OnVisualStateChanged;
}
protected override void OnAttached()
{
base.OnAttached();
// Find provider
if (AssociatedObject.Parent != null)
{
stateProvider = FindParentStateProvider(AssociatedObject.Parent);
// If found, subscribe to events
if (stateProvider != null)
{
stateProvider.VisualStateChanged += StateProvider_VisualStateChanged;
}
}
}
protected override void OnAttached()
{
base.OnAttached();
// Find provider
if (AssociatedObject.Parent != null)
{
stateProvider = FindParentStateProvider(AssociatedObject.Parent);
// If found, subscribe to events
if (stateProvider != null)
{
stateProvider.VisualStateChanged += StateProvider_VisualStateChanged;
}
}
}
