@Override
	public boolean isGrabbable(Component c) {
		if (c == textArea) {
			return false;
		}
		return true;
	}
A {@link VisualVertex} implementation that provides a component with a docking header that 
is clickable.
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/vertex/DockingVisualVertex.java