Bug 85452 [IDE] (regression) Backdrop missing when all perspectives closed
I20050215-2300 - close all perspectives - the main page is blank - it should have a backdrop with text and button explaining how to open a perspective
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchWindowAdvisor.java
IDEWorkbenchPlugin.getDefault().savePluginPreferences();
        }
    }
    /*
     * Open the welcome editor for the primary feature and
     * for any newly installed features.
     */
    private void openWelcomeEditors(IWorkbenchWindow window) {
        if (IDEWorkbenchPlugin.getDefault().getPreferenceStore().getBoolean(
                IDEInternalPreferences.WELCOME_DIALOG)) {
            
            IProduct product = Platform.getProduct();
            if (product == null)
                return;
            AboutInfo productInfo = new AboutInfo(product);
            URL url = productInfo.getWelcomePageURL();
            if (url == null)
                return;
            IDEWorkbenchPlugin.getDefault().getPreferenceStore().setValue(
                    IDEInternalPreferences.WELCOME_DIALOG, false);
            openWelcomeEditor(window, new WelcomeEditorInput(productInfo), null);
        } else {
            
            List welcomeFeatures = new ArrayList();
            for (Iterator it = wbAdvisor.getNewlyAddedBundleGroups().entrySet()
                    .iterator(); it.hasNext();) {
                Map.Entry entry = (Map.Entry) it.next();
                String versionedId = (String) entry.getKey();
                String featureId = versionedId.substring(0, versionedId