001 /*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2011 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
019 */
020 package org.sonar.gwt.ui;
021
022 import com.google.gwt.core.client.EntryPoint;
023 import com.google.gwt.core.client.GWT;
024 import com.google.gwt.core.client.JavaScriptObject;
025 import com.google.gwt.json.client.JSONObject;
026 import com.google.gwt.user.client.Window;
027 import com.google.gwt.user.client.ui.RootPanel;
028 import com.google.gwt.user.client.ui.Widget;
029 import org.sonar.wsclient.gwt.GwtUtils;
030 import org.sonar.wsclient.services.Resource;
031 import org.sonar.wsclient.services.WSUtils;
032 import org.sonar.wsclient.unmarshallers.ResourceUnmarshaller;
033
034 public abstract class Page implements EntryPoint {
035
036 private static final ResourceUnmarshaller RESOURCE_UNMARSHALLER = new ResourceUnmarshaller();
037
038 public final void onModuleLoad() {
039 export(GWT.getModuleName(), this);
040 load();
041 onResourceLoad();
042 }
043
044 private void load() {
045 Widget widget = doOnModuleLoad();
046 if (widget != null) {
047 getRootPanel().add(widget);
048 }
049 }
050
051 protected Widget doOnModuleLoad() {
052 return null;
053 }
054
055 public final void onResourceLoad() {
056 JavaScriptObject json = loadResource();
057 if (json != null) {
058 if (WSUtils.getINSTANCE() == null) {
059 WSUtils.setInstance(new GwtUtils()); // TODO dirty hack to initialize WSUtils
060 }
061 String jsonStr = (new JSONObject(json)).toString();
062 Resource resource = RESOURCE_UNMARSHALLER.toModel(jsonStr);
063
064 RootPanel container = getRootPanel();
065 container.clear();
066
067 Widget currentWidget = doOnResourceLoad(resource);
068 if (currentWidget != null) {
069 container.add(currentWidget);
070 }
071 }
072 }
073
074 protected Widget doOnResourceLoad(Resource resource) {
075 return null;
076 }
077
078 protected final RootPanel getRootPanel() {
079 RootPanel result = RootPanel.get("gwtpage-" + GWT.getModuleName());
080 if (result == null) {
081 result = RootPanel.get("gwtpage");
082 }
083 return result;
084 }
085
086 private native JavaScriptObject loadResource()/*-{
087 return $wnd.config['resource'];
088 }-*/;
089
090 private native void export(String gwtId, Page page)/*-{
091 $wnd.modules[gwtId]=function() {page.@org.sonar.gwt.ui.Page::onResourceLoad()()};
092 }-*/;
093 }