NS_IMETHODIMP
inDOMView::SetRootNode(nsIDOMNode* aNode)
{
if (mTree)
mTree->BeginUpdateBatch();
if (mRootDocument) {
// remove previous document observer
nsCOMPtr<nsINode> doc(do_QueryInterface(mRootDocument));
if (doc)
doc->RemoveMutationObserver(this);
}
RemoveAllNodes();
mRootNode = aNode;
if (aNode) {
// If we are able to show element nodes, then start with the root node
// as the first node in the buffer
if (mWhatToShow & nsIDOMNodeFilter::SHOW_ELEMENT) {
// allocate new node array
AppendNode(CreateNode(aNode, nsnull));
} else {
// place only the children of the root node in the buffer
ExpandNode(-1);
}
// store an owning reference to document so that it isn't
// destroyed before we are
mRootDocument = do_QueryInterface(aNode);
if (!mRootDocument) {
aNode->GetOwnerDocument(getter_AddRefs(mRootDocument));
}
// add document observer
nsCOMPtr<nsINode> doc(do_QueryInterface(mRootDocument));
if (doc)
doc->AddMutationObserver(this);
} else {
mRootDocument = nsnull;
}
if (mTree)
mTree->EndUpdateBatch();
return NS_OK;
}
void SGraphPanel::Update()
{
// Add widgets for all the nodes that don't have one.
if(GraphObj != NULL)
{
// Scan for all missing nodes
for (int32 NodeIndex = 0; NodeIndex < GraphObj->Nodes.Num(); ++NodeIndex)
{
UEdGraphNode* Node = GraphObj->Nodes[NodeIndex];
if (Node)
{
AddNode(Node);
}
else
{
UE_LOG(LogGraphPanel, Warning, TEXT("Found NULL Node in GraphObj array. A node type has been deleted without creating an ActiveClassRedictor to K2Node_DeadClass."));
}
}
// find the last selection action, and execute it
for (int32 ActionIndex = UserActions.Num() - 1; ActionIndex >= 0; --ActionIndex)
{
if (UserActions[ActionIndex].Action & GRAPHACTION_SelectNode)
{
DeferredSelectionTargetObjects.Empty();
for (const UEdGraphNode* Node : UserActions[ActionIndex].Nodes)
{
DeferredSelectionTargetObjects.Add(Node);
}
break;
}
}
}
else
{
RemoveAllNodes();
}
// Clean out set of added nodes
UserAddedNodes.Empty();
UserActions.Empty();
// Invoke any delegate methods
OnUpdateGraphPanel.ExecuteIfBound();
}
void USoundClassGraph::RebuildGraph()
{
check(RootSoundClass);
// Don't allow initial graph rebuild to affect package dirty state; remember current state...
UPackage* Package = GetOutermost();
const bool bIsDirty = Package->IsDirty();
Modify();
RemoveAllNodes();
ConstructNodes(RootSoundClass, 0, 0);
NotifyGraphChanged();
// ...and restore it
Package->SetDirtyFlag(bIsDirty);
}
// Purges the existing visual representation (typically followed by an Update call in the next tick)
void SGraphPanel::PurgeVisualRepresentation()
{
RemoveAllNodes();
}
MaterialGraph::~MaterialGraph()
{
RemoveAllNodes();
}