Bug 54915 [RCP] Need the ability to launch/load the Workbench without showing any windows
We need the ability to start up the Workbench without actually showing any WorkbenchWindows. The idea here is that is a significant gain in performance in doing this. WorkbenchWindows are created and brought to the front when requested by the user. With the Workbench running in the background the perceived load time experience should be much better than it is today. This is critical for LWP.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
private IDEWorkbenchActivityHelper activityHelper = null;
	
	/**
	 * Signals that the welcome editors and/or intros have been opened.
	 */
	private boolean editorsAndIntrosOpened = false;
	
	/**
	 * Creates a new workbench advisor instance.
	 */
	protected IDEWorkbenchAdvisor() {
		super();
		if (workbenchAdvisor != null) {
			throw new IllegalStateException();
		}
		workbenchAdvisor = this;
	}
	/**
	 * Returns the single instance for this advisor. Can
	 * be <code>null</code> if not created yet.
	 */
	 static final IDEWorkbenchAdvisor getAdvisor() {
		return workbenchAdvisor;
	}
	
	/**
	 * Returns the workbench configurer for the advisor. Can
	 * be <code>null</code> if advisor not initialized yet.
	 */
	 IWorkbenchConfigurer getWorkbenchConfigurer() {