Bug 54347 [Dialogs] Provide "Yes No Always Never" dialog
In Debug UI, we define a dialog that prompts the user to answer Yes, No, Always, or Never. If anyone's interested, this code is generic and could be shipped as a JFace component. The dialog is in the org.eclipse.debug.ui project; the type name is AlwaysNeverDialog. The dialog supports passing in a preference store and preference key for the dialog to persist an Always or Never selection. For cases where clients don't have a preference store but still want to be able to get at the user's response, it alternatively supports passing in a string buffer where the dialog will store the "always/never/prompt" status.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
return;
		}
	
		IWorkbenchWindow win = window;
		if (perspectiveId != null) {
			try {
				win = getWorkbenchConfigurer().getWorkbench().openWorkbenchWindow(perspectiveId, getDefaultPageInput());
				if (win == null) {
					win = window;
				}
			} catch (WorkbenchException e) {
				IDEWorkbenchPlugin.log("Error opening window with welcome perspective.", e.getStatus()); 
				return;
			}
		}
	
		if (win == null) {
			win = getWorkbenchConfigurer().getWorkbench().getWorkbenchWindows()[0];
		}
			
		IWorkbenchPage page = win.getActivePage();
		String id = perspectiveId;
		if (id == null) {
			id = getWorkbenchConfigurer().getWorkbench().getPerspectiveRegistry().getDefaultPerspective();
		}
	
		if (page == null) {
			try {
				page = win.openPage(id, getDefaultPageInput());
			} catch (WorkbenchException e) {