/// <summary>
/// This static initializer is used to override PropertyMetadata of the Visibility property so that it
/// can be coerced according to the IsSuppressed property value. Suppressing an edge pointer will make
/// it invisible to the user without altering the underlying value of the Visibility property. Thus,
/// visibility can be controlled independently of other factors that may require making the pointer
/// invisible to the user. For example, the HideEdgePointerByEdgeLength feature of EdgeControlBase may
/// need to ensure the pointer is removed from view, but when the constraint is removed, it shouldn't
/// cause pointers to be shown that weren't shown before.
/// </summary>
static DefaultEdgePointer()
{
var oldPmd = VisibilityProperty.GetMetadata(typeof(DefaultEdgePointer).BaseType);
var newPmd = new PropertyMetadata(oldPmd.DefaultValue, oldPmd.PropertyChangedCallback, CoerceVisibility);
VisibilityProperty.OverrideMetadata(typeof(DefaultEdgePointer), newPmd);
}
static UIElement()
{
var uiElement = typeof(UIElement);
VisibilityProperty.GetMetadata(uiElement).MergePropertyChangedCallback(ClearPointersStateIfNeeded);
Windows.UI.Xaml.Controls.Control.IsEnabledProperty.GetMetadata(typeof(Windows.UI.Xaml.Controls.Control)).MergePropertyChangedCallback(ClearPointersStateIfNeeded);
#if __WASM__
HitTestVisibilityProperty.GetMetadata(uiElement).MergePropertyChangedCallback(ClearPointersStateIfNeeded);
#endif
}
