private void UnsubscribeFromItemsUpdating(GraphItemCollection collection)
{
if (collection == null)
{
return;
}
collection.CollectionChanged -= GraphItemsCollectionChanged;
foreach (var item in collection)
{
item.Updated -= ItemUpdated;
}
}
private void SubscribeToItemsUpdating(GraphItemCollection collection)
{
if (collection == null)
{
return;
}
collection.CollectionChanged += GraphItemsCollectionChanged;
foreach (var item in collection)
{
PrepareItem(item);
}
}
public GraphControlBase()
{
Items = new UIElementCollection(this, this);
mInternalItems = new GraphControlItems();
AddLogicalChild(mInternalItems);
AddVisualChild(mInternalItems);
GraphItems = new GraphItemCollection();
SubscribeToItemsUpdating(GraphItems);
mInternalItems.ItemsSource = GraphItems;
DataContextChanged += (s, e) =>
{ mInternalItems.DataContext = e.NewValue; };
}