001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 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.user.client.ui.RootPanel; 026 import com.google.gwt.user.client.ui.Widget; 027 import org.sonar.wsclient.gwt.unmarshallers.ResourceUnmarshaller; 028 import org.sonar.wsclient.services.Resource; 029 030 public abstract class Page implements EntryPoint { 031 032 private Widget currentWidget = null; 033 private Integer currentResourceId = null; 034 035 public final void onModuleLoad() { 036 export(GWT.getModuleName(), this); 037 load(); 038 onResourceLoad(); 039 } 040 041 private void load() { 042 Widget widget = doOnModuleLoad(); 043 if (widget!=null) { 044 getRootPanel().add(widget); 045 } 046 } 047 048 protected Widget doOnModuleLoad() { 049 return null; 050 } 051 052 public final void onResourceLoad() { 053 JavaScriptObject json = loadResource(); 054 if (json != null) { 055 Resource resource = ResourceUnmarshaller.getInstance().toModel(json); 056 057 RootPanel container = getRootPanel(); 058 container.clear(); 059 if (resource.getId().equals(currentResourceId) && currentWidget != null) { 060 container.add(currentWidget); 061 062 } else { 063 currentWidget = doOnResourceLoad(resource); 064 currentResourceId = resource.getId(); 065 if (currentWidget != null) { 066 container.add(currentWidget); 067 } 068 } 069 } 070 } 071 072 protected Widget doOnResourceLoad(Resource resource) { 073 return null; 074 } 075 076 protected final RootPanel getRootPanel() { 077 RootPanel result = RootPanel.get("gwtpage-" + GWT.getModuleName()); 078 if (result == null) { 079 result = RootPanel.get("gwtpage"); 080 } 081 return result; 082 } 083 084 private native JavaScriptObject loadResource()/*-{ 085 return $wnd.config['resource']; 086 }-*/; 087 088 private native void export(String gwtId, Page page)/*-{ 089 $wnd.modules[gwtId]=function() {page.@org.sonar.gwt.ui.Page::onResourceLoad()()}; 090 }-*/; 091 } 092