public EventPropagation DragUpdated(IMGUIEvent evt, IEnumerable <ISelectable> selection, IDropTarget dropTarget)
{
GroupNode firstAncestorOfType = base.parent.GetFirstAncestorOfType <GroupNode>();
bool flag = false;
foreach (ISelectable current in selection)
{
if (current != firstAncestorOfType)
{
GraphElement element = current as GraphElement;
Event imguiEvent = evt.imguiEvent;
if (imguiEvent.shift)
{
if (firstAncestorOfType.ContainsElement(element))
{
firstAncestorOfType.RemoveElement(element);
}
}
else if (!firstAncestorOfType.ContainsElement(element) && element.GetContainingGroupNode() == null)
{
flag = true;
}
}
}
if (flag)
{
base.AddToClassList("dragEntered");
}
else
{
base.RemoveFromClassList("dragEntered");
}
return(EventPropagation.Stop);
}
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);
}
}
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);
}
}
public EventPropagation DragUpdated(IMGUIEvent evt, IEnumerable <ISelectable> selection, IDropTarget dropTarget)
{
GroupNode group = parent.GetFirstAncestorOfType <GroupNode>();
bool canDrop = false;
foreach (ISelectable selectedElement in selection)
{
if (selectedElement == group)
{
continue;
}
var selectedGraphElement = selectedElement as GraphElement;
Event e = evt.imguiEvent;
if (e.shift)
{
if (group.ContainsElement(selectedGraphElement))
{
group.RemoveElement(selectedGraphElement);
}
}
else
{
if (!group.ContainsElement(selectedGraphElement) && selectedGraphElement.GetContainingGroupNode() == null)
{
canDrop = true;
}
}
}
if (canDrop)
{
AddToClassList("dragEntered");
}
else
{
RemoveFromClassList("dragEntered");
}
return(EventPropagation.Stop);
}
