| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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 com.google.gwt.sample.gaerequest.client; |
| |
| import com.google.gwt.core.client.GWT; |
| import com.google.gwt.dom.client.SpanElement; |
| import com.google.gwt.event.dom.client.ClickEvent; |
| import com.google.gwt.requestfactory.shared.Receiver; |
| import com.google.gwt.sample.gaerequest.shared.GaeUser; |
| import com.google.gwt.sample.gaerequest.shared.GaeUserServiceRequest; |
| import com.google.gwt.sample.gaerequest.shared.MakesGaeRequests; |
| import com.google.gwt.uibinder.client.UiBinder; |
| import com.google.gwt.uibinder.client.UiField; |
| import com.google.gwt.uibinder.client.UiHandler; |
| import com.google.gwt.user.client.Window.Location; |
| import com.google.gwt.user.client.ui.Anchor; |
| import com.google.gwt.user.client.ui.Composite; |
| import com.google.gwt.user.client.ui.Widget; |
| |
| /** |
| * A simple widget which displays info about the user and a logout link. In real |
| * life you'd probably blow this up into MVP parts. |
| * <p> |
| * On the other hand, it's pleasant that this widget is completely self |
| * contained, taking care of its own RPC needs when awoken by being attached to |
| * the dom. Hopefully that's not too magical. |
| */ |
| public class LoginWidget extends Composite { |
| interface Binder extends UiBinder<Widget, LoginWidget> { |
| } |
| |
| private static final Binder BINDER = GWT.create(Binder.class); |
| |
| private final MakesGaeRequests requests; |
| |
| @UiField |
| SpanElement name; |
| @UiField |
| Anchor logoutLink; |
| |
| public LoginWidget(MakesGaeRequests requests) { |
| this.requests = requests; |
| initWidget(BINDER.createAndBindUi(this)); |
| } |
| |
| @Override |
| protected void onLoad() { |
| GaeUserServiceRequest request = requests.userServiceRequest(); |
| |
| request.createLogoutURL(Location.getHref()).to(new Receiver<String>() { |
| public void onSuccess(String response) { |
| setLogoutUrl(response); |
| } |
| }); |
| request.getCurrentUser().to(new Receiver<GaeUser>() { |
| @Override |
| public void onSuccess(GaeUser response) { |
| setUserName(response.getNickname()); |
| } |
| }); |
| request.fire(); |
| } |
| |
| public void setUserName(String userName) { |
| name.setInnerText(userName); |
| } |
| |
| public void setLogoutUrl(String url) { |
| logoutLink.setHref(url); |
| } |
| |
| /** |
| * Squelch clicks of the logout link if no href has been set. |
| */ |
| @UiHandler("logoutLink") |
| void handleClick(ClickEvent e) { |
| if ("".equals(logoutLink.getHref())) { |
| e.stopPropagation(); |
| } |
| } |
| } |