Java tutorial
/******************************************************************************* * Copyright 2011 Google Inc. All Rights Reserved. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * 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 my.app.main.client.activity; import my.app.main.client.ClientFactory; import my.app.main.client.entity.StudentInfo; import my.app.main.client.service.GetCurrentUser; import my.app.main.client.ui.LeftMenu; import com.google.gwt.activity.shared.AbstractActivity; import com.google.gwt.event.shared.EventBus; import com.google.gwt.place.shared.Place; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.AcceptsOneWidget; /** * Activities are started and stopped by an ActivityManager associated with a * container Widget. */ public class LeftMenuActivity extends AbstractActivity implements LeftMenu.Presenter { /** * Used to obtain views, eventBus, placeController. Alternatively, could be * injected via GIN. */ private ClientFactory clientFactory; /** * Sample property. */ private String name; public LeftMenuActivity(ClientFactory clientFactory) { this.clientFactory = clientFactory; } @Override public void start(AcceptsOneWidget containerWidget, EventBus eventBus) { final LeftMenu view = clientFactory.getLeftMenu(); view.setName(name); GetCurrentUser.Util.getInstance().getStudentInfo(new AsyncCallback<StudentInfo>() { @Override public void onSuccess(StudentInfo result) { view.setInfo(result); } @Override public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); } }); view.setPresenter(this); containerWidget.setWidget(view.asWidget()); } /** * @see LeftMenu.Presenter#goTo(Place) */ public void goTo(Place place) { clientFactory.getPlaceController().goTo(place); } }