private void InsertByDockPosition(LayoutContext layoutContext, System.Windows.Controls.Dock?defaultPosition = null)
{
Debug.Assert(!IsIdle);
if (LayoutContexts.Count > 1)
{
// See if the visual has a DockPosition property. If so, automatically
// position the child.
LayoutContext reference = (LayoutContexts[0] == layoutContext ? LayoutContexts[1] : LayoutContexts[0]);
System.Windows.Controls.Dock?dockPosition = GetDockPosition(layoutContext.DockableCollection);
switch (dockPosition ?? defaultPosition)
{
case null:
break;
case System.Windows.Controls.Dock.Bottom:
layoutContext.DockableCollection.HorizontalContentAlignment = HorizontalAlignment.Stretch;
layoutContext.InsertBottom(reference);
break;
case System.Windows.Controls.Dock.Left:
layoutContext.DockableCollection.VerticalContentAlignment = VerticalAlignment.Stretch;
layoutContext.InsertLeft(reference);
break;
case System.Windows.Controls.Dock.Right:
layoutContext.DockableCollection.VerticalContentAlignment = VerticalAlignment.Stretch;
layoutContext.InsertRight(reference);
break;
case System.Windows.Controls.Dock.Top:
layoutContext.DockableCollection.HorizontalContentAlignment = HorizontalAlignment.Stretch;
layoutContext.InsertTop(reference);
break;
default:
throw new ArgumentException("Invalid value: " + (dockPosition.HasValue ? dockPosition.Value.ToString() : "<null>"), "DockPosition");
}
}
}
