Bug 55799 [Intro] When new welcome is available, don't show the old one
One of the M8 candidate builds (any): 1) Open Eclipse on a new workspace 2) Close the new Welcome when it opens 3) Close Eclipse 4) Open Eclipse again. Observe: the old Welcome editor is opened. Expectation: when a product has a valid Intro, old welcome should never be shown.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
/**
	 * Constructs a new action builder which contributes actions
	 * to the given window.
	 * 
	 * @param window the window
	 */
	public WorkbenchActionBuilder(IWorkbenchWindow window) {
		this.window = window;
	}
	/**
	 * Returns the window to which this action builder is contributing.
	 */
	private IWorkbenchWindow getWindow() {
		return window;
	}
	
	/**
	 * Hooks listeners on the preference store and the window's page, perspective and selection services.
	 */
	private void hookListeners() {
		
		
		getWindow().addPageListener(new IPageListener() {
			public void pageActivated(IWorkbenchPage page) {
				enableActions(page.getPerspective() != null);
			}
			public void pageClosed(IWorkbenchPage page) {
				IWorkbenchPage pg = getWindow().getActivePage();
				enableActions(pg != null && pg.getPerspective() != null);
			}