@Override
	public void stateChanged(ChangeEvent e) {
		viewChanged();
	}
Invoked when the target of the listener has changed its state. In this
case, the method is called when the user switches to another tab in the
tabbed pane.

@param e the event
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ViewPanel.java