| 1 | /** |
| 2 | * Copyright 2005-2011 Steve McDuff d-duff@users.sourceforge.net |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.deduced.viewer.web.client; |
| 17 | |
| 18 | import org.deduced.viewer.web.shared.DynamicUserInterfaceService; |
| 19 | import org.deduced.viewer.web.shared.DynamicUserInterfaceServiceAsync; |
| 20 | import org.deduced.viewer.web.shared.ModelRegistry; |
| 21 | import org.deduced.viewer.web.shared.RootWidgetControl; |
| 22 | import org.deduced.viewer.web.shared.Utilities; |
| 23 | import org.deduced.viewer.web.shared.WidgetModel; |
| 24 | |
| 25 | import com.google.gwt.core.client.EntryPoint; |
| 26 | import com.google.gwt.core.client.GWT; |
| 27 | import com.google.gwt.user.client.ui.RootPanel; |
| 28 | import com.google.gwt.user.client.ui.Widget; |
| 29 | |
| 30 | /** |
| 31 | * Entry point classes define <code>onModuleLoad()</code>. Starts the deduced |
| 32 | * web viewer application. |
| 33 | * |
| 34 | * @author Steve McDuff |
| 35 | */ |
| 36 | public class DeducedWebViewer implements EntryPoint, RootWidgetControl |
| 37 | { |
| 38 | |
| 39 | /** |
| 40 | * model registry used to create all the GWT components we need. |
| 41 | */ |
| 42 | private ModelRegistry registry; |
| 43 | |
| 44 | /** |
| 45 | * root widget |
| 46 | */ |
| 47 | private WidgetModel rootWidget; |
| 48 | |
| 49 | /** |
| 50 | * root panel |
| 51 | */ |
| 52 | private RootPanel rootPanel; |
| 53 | |
| 54 | /** |
| 55 | * Deduced_Web_Viewer constructor |
| 56 | */ |
| 57 | public DeducedWebViewer() |
| 58 | { |
| 59 | registry = createModelRegistry(); |
| 60 | registry.setRootWidgetControl(this); |
| 61 | DynamicUserInterfaceServiceAsync setDynamicViewService = |
| 62 | createServerInterface(); |
| 63 | registry.setUserInterfaceService(setDynamicViewService); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * create ModelRegistry |
| 68 | * |
| 69 | * @return the model registry |
| 70 | */ |
| 71 | public ModelRegistry createModelRegistry() |
| 72 | { |
| 73 | return new ModelRegistry(); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * create Server Interface |
| 78 | * |
| 79 | * @return the server interface |
| 80 | */ |
| 81 | public DynamicUserInterfaceServiceAsync createServerInterface() |
| 82 | { |
| 83 | DynamicUserInterfaceServiceAsync setDynamicViewService = |
| 84 | GWT.create(DynamicUserInterfaceService.class); |
| 85 | return setDynamicViewService; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * This is the entry point method. |
| 90 | */ |
| 91 | @Override |
| 92 | public void onModuleLoad() |
| 93 | { |
| 94 | registry.getInitialUserInterface(); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * get the model Registry |
| 99 | * |
| 100 | * @return the model registry |
| 101 | */ |
| 102 | public ModelRegistry getRegistry() |
| 103 | { |
| 104 | return registry; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * set Root Panel |
| 109 | * |
| 110 | * @param rootModel the root widget model to use |
| 111 | */ |
| 112 | @Override |
| 113 | public void setRootWidget( |
| 114 | WidgetModel rootModel) |
| 115 | { |
| 116 | rootWidget = rootModel; |
| 117 | if (rootPanel == null) |
| 118 | { |
| 119 | rootPanel = RootPanel.get("dynamicView"); |
| 120 | } |
| 121 | Widget setRootWidget = null; |
| 122 | if (rootModel != null) |
| 123 | { |
| 124 | setRootWidget = rootModel.getWidget(); |
| 125 | } |
| 126 | |
| 127 | if (setRootWidget == null) |
| 128 | { |
| 129 | if (rootPanel != null) |
| 130 | { |
| 131 | rootPanel.clear(); |
| 132 | } |
| 133 | } |
| 134 | else |
| 135 | { |
| 136 | Widget currentParent = setRootWidget.getParent(); |
| 137 | if (currentParent != rootPanel) |
| 138 | { |
| 139 | Utilities.addWidgetToPanel(setRootWidget, rootPanel); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * get Root Widget |
| 146 | * |
| 147 | * @return the root widget |
| 148 | */ |
| 149 | public WidgetModel getRootWidget() |
| 150 | { |
| 151 | return rootWidget; |
| 152 | } |
| 153 | |
| 154 | } |