/// <summary>
/// Called when IsAnimationEnabled is changed on an object.
/// </summary>
private static void OnIsAnimationEnabledInvalidated(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
var panel = dependencyObject as Panel;
if (panel == null)
{
return;
}
if ((bool)e.NewValue)
{
// Turn animations on for the panel if there's not already a PanelAnimator attached
if (panel.ReadLocalValue(AttachedAnimatorProperty) == DependencyProperty.UnsetValue)
{
var animator = new PanelLayoutAnimator(panel);
panel.SetValue(AttachedAnimatorProperty, animator);
}
}
else
{
// clear animations
if (panel.ReadLocalValue(AttachedAnimatorProperty) != DependencyProperty.UnsetValue)
{
var animator = (PanelLayoutAnimator)panel.ReadLocalValue(AttachedAnimatorProperty);
animator.Detach();
panel.SetValue(AttachedAnimatorProperty, DependencyProperty.UnsetValue);
}
}
}
/// <summary>
/// Called when IsAnimationEnabled is changed on an object.
/// </summary>
private static void OnIsAnimationEnabledInvalidated(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e) {
var panel = dependencyObject as Panel;
if (panel == null) return;
if ((bool)e.NewValue) {
// Turn animations on for the panel if there's not already a PanelAnimator attached
if (panel.ReadLocalValue(AttachedAnimatorProperty) == DependencyProperty.UnsetValue) {
var animator = new PanelLayoutAnimator(panel);
panel.SetValue(AttachedAnimatorProperty, animator);
}
}
else {
// clear animations
if (panel.ReadLocalValue(AttachedAnimatorProperty) != DependencyProperty.UnsetValue) {
var animator = (PanelLayoutAnimator)panel.ReadLocalValue(AttachedAnimatorProperty);
animator.Detach();
panel.SetValue(AttachedAnimatorProperty, DependencyProperty.UnsetValue);
}
}
}