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.ui.RootPanel; 027 import com.google.gwt.user.client.ui.Widget; 028 import org.sonar.wsclient.gwt.GwtUtils; 029 import org.sonar.wsclient.services.Resource; 030 import org.sonar.wsclient.services.WSUtils; 031 import org.sonar.wsclient.unmarshallers.ResourceUnmarshaller; 032 033 public abstract class Page implements EntryPoint { 034 035 private static final ResourceUnmarshaller RESOURCE_UNMARSHALLER = new ResourceUnmarshaller(); 036 037 private Widget currentWidget = null; 038 private Integer currentResourceId = null; 039 040 public final void onModuleLoad() { 041 export(GWT.getModuleName(), this); 042 load(); 043 onResourceLoad(); 044 } 045 046 private void load() { 047 Widget widget = doOnModuleLoad(); 048 if (widget != null) { 049 getRootPanel().add(widget); 050 } 051 } 052 053 protected Widget doOnModuleLoad() { 054 return null; 055 } 056 057 public final void onResourceLoad() { 058 JavaScriptObject json = loadResource(); 059 if (json != null) { 060 if (WSUtils.getINSTANCE() == null) { 061 WSUtils.setInstance(new GwtUtils()); // TODO dirty hack to initialize WSUtils 062 } 063 String jsonStr = (new JSONObject(json)).toString(); 064 Resource resource = RESOURCE_UNMARSHALLER.toModel(jsonStr); 065 066 RootPanel container = getRootPanel(); 067 container.clear(); 068 if (resource.getId().equals(currentResourceId) && currentWidget != null) { 069 container.add(currentWidget); 070 071 } else { 072 currentWidget = doOnResourceLoad(resource); 073 currentResourceId = resource.getId(); 074 if (currentWidget != null) { 075 container.add(currentWidget); 076 } 077 } 078 } 079 } 080 081 protected Widget doOnResourceLoad(Resource resource) { 082 return null; 083 } 084 085 protected final RootPanel getRootPanel() { 086 RootPanel result = RootPanel.get("gwtpage-" + GWT.getModuleName()); 087 if (result == null) { 088 result = RootPanel.get("gwtpage"); 089 } 090 return result; 091 } 092 093 private native JavaScriptObject loadResource()/*-{ 094 return $wnd.config['resource']; 095 }-*/; 096 097 private native void export(String gwtId, Page page)/*-{ 098 $wnd.modules[gwtId]=function() {page.@org.sonar.gwt.ui.Page::onResourceLoad()()}; 099 }-*/; 100 }