@Override
	public void setActivationWindow(Window window) {
		WindowPresentation windowPresentation = getWindowPresentation();
		Window helpWindow = windowPresentation.getHelpWindow();
		if (helpWindow == null) {
			activationWindow = window;
			super.setActivationWindow(window);
			return;
		}

		windowSize = helpWindow.getSize();// remember the previous size

		boolean wasModal = isModalWindow(helpWindow);
		boolean willBeModal = isModalWindow(window);
		if (!wasModal && willBeModal) {
			// in this condition, a new window will be shown, but the old one is not properly
			// closed by JavaHelp
			helpWindow.setVisible(false);
		}

		super.setActivationWindow(window);
	}
Create zoom in/out buttons on the default help window toolbar.
@param jHelp the java help object used to retrieve the help components
Ghidra/Framework/Help/src/main/java/help/GHelpBroker.java