/// <summary>
/// Closes the top menu
/// </summary>
protected void CollapseUp()
{
Menu top = ParentMenu.GetTop();
if (top != null)
{
top.CloseChild();
}
}
/// <summary>
/// Opens a child menu item
/// </summary>
/// <param name="item">The item to open</param>
/// <param name="openUnderneath">Indicates whether to display below or to the right</param>
internal void OpenChild(MenuItem item, bool openUnderneath)
{
Menu content = (Menu)item.Content;
Point p;
if (_current != null)
{
_current.Hide();
_current = null;
}
if (content != null)
{
p = item.TransformToVisual(ElementChildren).Transform((openUnderneath ? new Point(0, item.RenderSize.Height - 1) : new Point(item.RenderSize.Width - 1, 0)));
content.SetValue(Canvas.LeftProperty, p.X);
content.SetValue(Canvas.TopProperty, p.Y);
//250 ms delay loop
int dwStartTime = System.Environment.TickCount;
while (true)
{
if (System.Environment.TickCount - dwStartTime > 250)
{
break; //1000 milliseconds
}
}
//delay loop end
if (!ElementChildren.Children.Contains(content))
{
ElementChildren.Children.Add(content);
}
content.ClearSelection();
content.CloseChild();
content.Show();
_current = content;
}
}