public void AddDataItem(DataItem dataItem)
{
if (DataItems == null)
{
DataItems = new List <DataItem>();
}
if (!DataItems.Contains(dataItem))
{
DataItems.Add(dataItem);
}
}
public void RemoveDataItem(DataItem dataItem)
{
if (DataItems == null)
{
return;
}
if (DataItems.Contains(dataItem))
{
DataItems.Remove(dataItem);
}
if (dataItem.ChildCount > 0)
{
foreach (var childDataItem in dataItem.Children)
{
RemoveDataItem(childDataItem);
}
}
}
void RebuildDataRenderers()
{
if (itemsUpdating)
{
return;
}
InternalContent.Content.Clear();
for (var index = 0; index < DataItems.Count; index++)
{
var closureIndex = index;
var item = DataItems[index];
var renderer = CreateRenderer(UIStyle, item);
renderer.MouseUp += (s, e) => InternalContent.DispatchEvent(e.Derive());
renderer.MouseDown += (s, e) => InternalContent.DispatchEvent(e.Derive());
renderer.MouseDragged += (s, e) => InternalContent.DispatchEvent(e.Derive());
renderer.MouseWheel += (s, e) => InternalContent.DispatchEvent(e.Derive());
renderer.SelectionChanged += (s, a) =>
{
SelectedIndex = closureIndex;
if (a.Adjusting == false)
{
// the adjusting event is fired naturally already.
RaiseSelectionChanged(a);
}
};
InternalContent.Content.Add(renderer);
}
// todo: This is crude ..
if (SelectedItem != null)
{
if (!DataItems.Contains(SelectedItem))
{
SelectedItem = default(T);
}
}
}
