private void OnCategoryCollectionChanged(Object sender, CollectionChangeEventArgs e)
{
ToolBoxCategory tbc = e.Element as ToolBoxCategory;
if (e.Action == CollectionChangeAction.Add)
{
tbc.Items.ItemChanged += new CollectionChangeEventHandler(OnCategoryItemChanged);
}
else if (e.Action == CollectionChangeAction.Remove)
{
tbc.Items.ItemChanged -= new CollectionChangeEventHandler(OnCategoryItemChanged);
}
Invalidate();
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
ToolBoxItem item = GetToolboxItemByPoint(e.Location);
if (item != null)
{
if (item is ToolBoxCategory)
{
ToolBoxCategory tbc = item as ToolBoxCategory;
tbc.IsOpen = !tbc.IsOpen;
RefreshScrollBar();
Invalidate();
}
else
{
_selectedItem = item;
_selectedItem.OnClickEvent();
Invalidate();
}
}
}