private void OnChildAdded(GraphElement element)
{
element.AddToClassList("stack-child-element");
element.ResetPositionProperties();
element.RegisterCallback <DetachFromPanelEvent>(OnChildDetachedFromPanel);
UpdatePlaceholderVisibility();
}
private void AddToSelectionNoUndoRecord(GraphElement graphElement)
{
graphElement.selected = true;
selection.Add(graphElement);
graphElement.OnSelected();
// To ensure that the selected GraphElement gets unselected if it is removed from the GraphView.
graphElement.RegisterCallback <DetachFromPanelEvent>(OnSelectedElementDetachedFromPanel);
graphElement.MarkDirtyRepaint();
}
internal void ChangeLayer(GraphElement element)
{
if (!m_ContainerLayers.ContainsKey(element.layer))
{
AddLayer(element.layer);
}
bool selected = element.selected;
if (selected)
{
element.UnregisterCallback <DetachFromPanelEvent>(OnSelectedElementDetachedFromPanel);
}
GetLayer(element.layer).Add(element);
if (selected)
{
element.RegisterCallback <DetachFromPanelEvent>(OnSelectedElementDetachedFromPanel);
}
}