/**
* Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onebusaway.webapp.gwt.viewkit;
import java.util.List;
import java.util.Map;
import org.onebusaway.webapp.gwt.common.widgets.DivWidget;
import org.onebusaway.webapp.gwt.viewkit.resources.ViewKitCssResource;
import org.onebusaway.webapp.gwt.viewkit.resources.ViewKitResources;
import com.google.gwt.user.client.ui.Widget;
public class ViewController implements ContextAware {
private static ViewKitCssResource _css = ViewKitResources.INSTANCE.getCSS();
private NavigationController _navigationController;
private boolean _viewLoaded = false;
protected Widget _view;
private TabBarItem _tabBarItem = null;
private NavigationItem _navigationItem = null;
public NavigationController getNavigationController() {
return _navigationController;
}
public void setNavigationController(NavigationController controller) {
_navigationController = controller;
}
Widget getView() {
if (!_viewLoaded) {
loadView();
_viewLoaded = true;
viewDidLoad();
}
_view.addStyleName(_css.ViewController());
return _view;
}
public TabBarItem getTabBarItem() {
if (_tabBarItem == null)
_tabBarItem = new TabBarItem();
return _tabBarItem;
}
public NavigationItem getNavigationItem() {
if (_navigationItem == null)
_navigationItem = new NavigationItem();
return _navigationItem;
}
public void viewDidLoad() {
}
public void viewDidUnload() {
}
public void viewWillAppear() {
}
public void viewDidAppear() {
}
public void viewWillDisappear() {
}
public void viewDidDisappear() {
}
public void handleContext(List<String> path, Map<String, String> context) {
}
public void retrieveContext(List<String> path, Map<String, String> context) {
}
/****
* Protected Methods
****/
protected void fireContextChangedEvent() {
NavigationController controller = getNavigationController();
if( controller != null)
controller.fireContextChangedEvent();
}
protected void loadView() {
if (_view == null)
_view = new DivWidget("empty");
}
}