/// <summary>
/// Update layout menu items
/// </summary>
private void OnMenuItemsSourceCollectionChangedInternal(ItemMenuLayout layout, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
AddItems(e.NewItems, e.NewStartingIndex, layout);
}
else if (e.Action == NotifyCollectionChangedAction.Move)
{
MoveItems(e.OldItems, e.OldStartingIndex, e.NewStartingIndex, layout);
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
RemoveItems(e.OldItems, e.OldStartingIndex, layout);
}
else if (e.Action == NotifyCollectionChangedAction.Replace)
{
throw new NotImplementedException("ItemsView: NotifyCollectionChangedAction.Replace not implemented!");
}
else if (e.Action == NotifyCollectionChangedAction.Reset)
{
RemoveItems(e.OldItems, e.OldStartingIndex, layout);
}
else
{
throw new Exception("ItemsView: Invalid action!");
}
}
/// <summary>
/// Called when all left menu items changed
/// </summary>
private void OnLeftMenuItemsSourceChanged(IList oldSource, IList newSource)
{
if (m_leftMenuLayout == null)
{
m_leftMenuLayout = new ItemMenuLayout();
Children.Add(m_leftMenuLayout);
}
if (oldSource != null && oldSource.Count > 0)
{
OnMenuItemsSourceCollectionChangedInternal(m_leftMenuLayout, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset, null));
}
if (newSource != null && newSource.Count > 0)
{
OnMenuItemsSourceCollectionChangedInternal(m_leftMenuLayout, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, newSource));
}
}