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/wizards/newresource/BasicNewProjectResourceWizard.java
description.setReferencedProjects(refProjects);
	}
	
	
	WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
		protected void execute(IProgressMonitor monitor) throws CoreException {
			createProject(description, newProjectHandle, monitor);
		}
	};
	
	try {
		getContainer().run(true, true, op);
	} catch (InterruptedException e) {
		return null;
	} catch (InvocationTargetException e) {
			
		Throwable t = e.getTargetException();
		if (t instanceof CoreException) {
			if (((CoreException)t).getStatus().getCode() == IResourceStatus.CASE_VARIANT_EXISTS) {
				MessageDialog.openError(
					getShell(), 
					ResourceMessages.getString("NewProject.errorMessage"),  
					ResourceMessages.format("NewProject.caseVariantExistsError", new String[] { newProjectHandle.getName()} )  ,
					);	
			} else {
				ErrorDialog.openError(
					getShell(), 
					ResourceMessages.getString("NewProject.errorMessage"),  
					null, 
			 		((CoreException) t).getStatus());