/*
* MyGWT Widget Library
* Copyright(c) 2007, MyGWT.
* licensing@mygwt.net
*
* http://mygwt.net/license
*/
package net.mygwt.ui.client.mvc;
/**
* <code>Views</code> are responsible for rendering the user interface.
*/
public abstract class View {
protected Controller controller;
boolean initialized;
/**
* Creates a new view instance.
*
* @param controller the parent controller
*/
public View(Controller controller) {
this.controller = controller;
}
/**
* Returns the view's controller.
*
* @return the controller
*/
public Controller getController() {
return controller;
}
/**
* Called when a view needs to pass an event to it's controller.
*
* @param event the app event
*/
protected void fireEvent(AppEvent event) {
Controller c = controller;
while (c != null) {
if (c.canHandle(event)) {
c.handleEvent(event);
}
c = c.parent;
}
}
/**
* Called when a view needs to pass an event to it's controller.
*
* @param eventType the event type
*/
protected void fireEvent(int eventType) {
fireEvent(new AppEvent(eventType));
}
/**
* Process the event.
*
* @param event the event to be processed
*/
protected abstract void handleEvent(AppEvent event);
/**
* Called once prior to handleEvent being called. Widgets should be
* instantiated in the init method rather than the view constructor.
*/
protected void initialize() {
}
}
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