private void create(final IBranchPart sourceBranch, boolean newTopic) {
topic = createDummyTopic(sourceBranch, newTopic);
if (sourceBranch != null || !newTopic) {
PartRegistry partRegistry = viewer.getPartRegistry();
if (viewer instanceof AbstractViewer) ((AbstractViewer) viewer).setPartRegistry(null);
BranchPart branchPart = new BranchPart();
if (sourceBranch != null) branchPart.setOverrideBranchType(sourceBranch.getBranchType());
branch = branchPart;
branch.setModel(topic);
branch.setParent(viewer.getRootPart());
addBranchView();
branch.addNotify();
branch.getStatus().activate();
removeShadow();
if (sourceBranch != null)
((BranchPart) branch).setGraphicalPolicy(new DummyBranchPolicy(sourceBranch));
if (viewer instanceof AbstractViewer) ((AbstractViewer) viewer).setPartRegistry(partRegistry);
} else {
IPart topicPart = viewer.findPart(topic);
branch = MindMapUtils.findBranch(topicPart);
branch.getFigure().setEnabled(false);
}
branch.refresh();
}
