In one set of embodiments, methods, systems, and apparatus are provided that include presenting, by a computer system, a task flow in a popup component of an application user interface executing in a user interface layer, where the task flow executes in an application layer of the computer system, and also include communicating, by the computer system, a first notification from the application layer to the user interface layer in response to normal completion of the task flow, and updating, e.g., closing, the component in the application user interface based upon the first notification. A second notification may be communicated from the user interface layer to the application layer in response to a user interface event that is associated with the popup component and causes an abnormal termination of the task flow. Presenting may include displaying the task flow in a region component in the popup component.