Examples of com.samskivert.swing.Controller

com.samskivert.swing.Controller

The controller class provides a basis for the separation of user interface code into display code and control code. The display code lives in a panel class (javax.swing.JPanel or something conceptually similar) and the control code lives in an associated controller class.

The controller philosophy is thus: The panel class (and its UI components) convert basic user interface actions into higher level actions that more cleanly encapsulate the action desired by the user and they pass those actions on to their controller. The controller then performs abstract processing based on the users desires and the changing state of the application and calls back to the panel to affect changes to the display.

Controllers also support the notion of scope. When a panel wishes to post an action, it doesn't do it directly to the controller. Instead it does it using a controller utility function called {@link #postAction}, which searches up the user interface hierarchy looking for a component that implements {@link ControllerProvider} which it will use to obtain thecontroller "in scope" for that component. That controller is requested to handle the action, but if it cannot handle the action, the next controller up the chain is located and requested to process the action.

In this manner, a hierarchy of controllers (often just two: one application wide and one for whatever particular mode the application is in at the moment) can provide a set of services that are available to all user interface elements in the entire application and in a way that doesn't require tight connectedness between the UI elements and the controllers.

    /**
     * Construct the panel and initialize it with a context.
     */
    public ViewerScenePanel (StageContext ctx, CharacterManager charmgr)
    {
        super(ctx, new Controller() {
        });


        _charmgr = charmgr;


        // create the character descriptors

     * Constructs the editor scene view panel.
     */
    public EditorScenePanel (EditorContext ctx, JFrame frame, EditorModel model,
        SceneModelListener sceneListener)
    {
        super(ctx, new Controller() { });


        _sceneListener = sceneListener;


        // keep these around for later
        _ctx = ctx;


        // create our client instance
        _client = createSimulatorClient(_frame);


        // set up the top-level client controller
        Controller ctrl = createController(siminfo);
        _frame.setController(ctrl);


        // create the server
        Injector injector = Guice.createInjector(new SimpleServer.CrowdModule());
        SimulatorServer server = createSimulatorServer(injector);

Examples of com.samskivert.swing.Controller

Related Classes of com.samskivert.swing.Controller