void CoolMenuItem_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e)
{
CoolMenu cm = this.ParentItemsControl as CoolMenu;
int index = CoolMenu.GetGenerator(cm).IndexFromContainer(this);
cm.OnItemMouseLeave(index);
}
private static void OnItemContainerStylePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CoolMenu c = d as CoolMenu;
Style value = e.NewValue as Style;
var generator = CoolMenu.GetGenerator(c);
generator.UpdateItemContainerStyle(value);
}