private void createToolTipWindow(Window parent) {
		toolTipWindow = new JWindow(parent);
		toolTipWindow.setFocusable(false);

		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBorder(new BevelBorder(BevelBorder.RAISED));
		scrollPane.setFocusable(false);
		scrollPane.getVerticalScrollBar().setFocusable(false);
		scrollPane.getHorizontalScrollBar().setFocusable(false);
		scrollPane.getViewport().add(getPreviewPaneComponent());

		toolTipWindow.getContentPane().add(scrollPane);
	}
Removes the given listener from this class if it has previously been added.
@param listener The listener to remove.
Ghidra/Framework/Docking/src/main/java/docking/widgets/DropDownTextField.java