public void AddElement(GraphElement element)
{
if (element == null)
{
throw new ArgumentException("Cannot add null element");
}
if (element is GroupNode)
{
throw new ArgumentException("Nested group node is not supported yet.");
}
if (this.m_ContainedElements == null)
{
this.m_ContainedElements = new List <GraphElement>();
}
else if (this.m_ContainedElements.Contains(element))
{
throw new ArgumentException("The element is already contained in this group node.");
}
GroupNode containingGroupNode = element.GetContainingGroupNode();
if (containingGroupNode != null)
{
containingGroupNode.RemoveElement(element);
}
this.m_ContainedElements.Add(element);
element.RegisterCallback <PostLayoutEvent>(new EventCallback <PostLayoutEvent>(this.OnSubElementPostLayout), Capture.NoCapture);
element.RegisterCallback <DetachFromPanelEvent>(new EventCallback <DetachFromPanelEvent>(this.OnSubElementDetachedFromPanel), Capture.NoCapture);
this.UpdateGeometryFromContent();
GraphView firstAncestorOfType = base.GetFirstAncestorOfType <GraphView>();
if (firstAncestorOfType != null && firstAncestorOfType.elementAddedToGroupNode != null)
{
firstAncestorOfType.elementAddedToGroupNode(this, element);
}
}
private void OnChildAdded(GraphElement element)
{
element.AddToClassList("stack-child-element");
element.ResetPositionProperties();
element.RegisterCallback <DetachFromPanelEvent>(OnChildDetachedFromPanel);
UpdatePlaceholderVisibility();
}
private void AddElementInternal(GraphElement element)
{
if (element == null)
{
throw new ArgumentException("Cannot add null element");
}
if (containedElements.Contains(element))
{
throw new ArgumentException("The specified element is already contained in this scope.");
}
string reasonWhyNotAccepted = "Cannot add the specified element to this scope.";
if (!AcceptsElement(element, ref reasonWhyNotAccepted))
{
throw new ArgumentException(reasonWhyNotAccepted);
}
// Removes the element from its current scope
Scope currentScope = element.GetContainingScope();
if (currentScope != null)
{
currentScope.RemoveElement(element);
}
m_ContainedElements.Add(element);
// To update the scope geometry whenever the added element's geometry changes
element.RegisterCallback <GeometryChangedEvent>(OnSubElementGeometryChanged);
ScheduleUpdateGeometryFromContent();
}
public void AddElement(GraphElement element)
{
if (element == null)
{
throw new ArgumentException("Cannot add null element");
}
if (element is GroupNode)
{
throw new ArgumentException("Nested group node is not supported yet.");
}
if (m_ContainedElements == null)
{
m_ContainedElements = new List <GraphElement>();
}
else if (m_ContainedElements.Contains(element))
{
throw new ArgumentException("The element is already contained in this group node.");
}
// Removes the element from its current group
GroupNode currentGroup = element.GetContainingGroupNode();
if (currentGroup != null)
{
currentGroup.RemoveElement(element);
}
m_ContainedElements.Add(element);
// To update the group geometry whenever the added element's geometry changes
element.RegisterCallback <PostLayoutEvent>(OnSubElementPostLayout);
element.RegisterCallback <DetachFromPanelEvent>(OnSubElementDetachedFromPanel);
UpdateGeometryFromContent();
GraphView gv = GetFirstAncestorOfType <GraphView>();
if (gv != null && gv.elementAddedToGroupNode != null)
{
gv.elementAddedToGroupNode(this, element);
}
}
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);
contentViewContainer.Dirty(ChangeType.Repaint);
}
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);
}
}
