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
*/
    private IWorkbench getWorkbench() {
        return getWindowConfigurer().getWorkbenchConfigurer().getWorkbench();
    }
    
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.application.WorkbenchAdvisor#preWindowShellClose
     */
    public boolean preWindowShellClose() {
        if (getWorkbench().getWorkbenchWindowCount() > 1) {
            return true;
        }
        
        
        IPreferenceStore store = IDEWorkbenchPlugin.getDefault()
                .getPreferenceStore();
        boolean promptOnExit = store
                .getBoolean(IDEInternalPreferences.EXIT_PROMPT_ON_CLOSE_LAST_WINDOW);
        if (promptOnExit) {
            String message;
            String productName = null;
            IProduct product = Platform.getProduct();
            if (product != null) {
                productName = product.getName();
            }
            if (productName == null) {
                message = IDEWorkbenchMessages
                        .getString("PromptOnExitDialog.message0");