gitorious.org Git - online-glom:gwt-glom.git/blob - src/main/java/org/glom/web/client/activity/TableSelectionActivity.java

1 /*

3 *

4 * This file is part of GWT-Glom.

5 *

6 * GWT-Glom is free software: you can redistribute it and/or modify it

7 * under the terms of the GNU Lesser General Public License as published by the

8 * Free Software Foundation, either version 3 of the License, or (at your

9 * option) any later version.

10 *

11 * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT

12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License

14 * for more details.

15 *

16 * You should have received a copy of the GNU Lesser General Public License

17 * along with GWT-Glom. If not, see <http://www.gnu.org/licenses/>.

18 */

19

20 package org.glom.web.client.activity;

21

22 import org.glom.web.client.ClientFactory;

23 import org.glom.web.client.OnlineGlomServiceAsync;

24 import org.glom.web.client.event.LocaleChangeEvent;

25 import org.glom.web.client.event.QuickFindChangeEvent;

26 import org.glom.web.client.event.TableChangeEvent;

27 import org.glom.web.client.place.DetailsPlace;

28 import org.glom.web.client.place.HasSelectableTablePlace;

29 import org.glom.web.client.place.ListPlace;

30 import org.glom.web.client.ui.TableSelectionView;

31 import org.glom.web.client.ui.View;

32 import org.glom.web.shared.DocumentInfo;

33

34 import com.google.gwt.activity.shared.AbstractActivity;

35 import com.google.gwt.core.client.GWT;

36 import com.google.gwt.event.dom.client.ChangeEvent;

37 import com.google.gwt.event.dom.client.ChangeHandler;

38 import com.google.gwt.event.dom.client.HasChangeHandlers;

39 import com.google.gwt.event.shared.EventBus;

40 import com.google.gwt.event.shared.HandlerRegistration;

41 import com.google.gwt.place.shared.Place;

42 import com.google.gwt.user.client.Window;

43 import com.google.gwt.user.client.rpc.AsyncCallback;

44 import com.google.gwt.user.client.ui.AcceptsOneWidget;

45

46 /**

47 *

48 */

49 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {

50 private final ClientFactory clientFactory;

51 private String documentID;

52 private String documentTitle;

53 private String tableName;

54 private String localeID;

55 private String quickFind;

56 private HandlerRegistration tableChangeHandlerRegistration = null;

57 private HandlerRegistration quickFindChangeHandlerRegistration = null;

58 private HandlerRegistration localeChangeHandlerRegistration = null;

59

60 // This activity isn't properly configured until the List or Details Place is set with the appropriate methods

61 public TableSelectionActivity(final ClientFactory clientFactory) {

62 this.clientFactory = clientFactory;

63 }

64

65 /**

66 * Invoked by the ActivityManager to start a new Activity

67 */

68 @Override

69 public void start(final AcceptsOneWidget containerWidget, final EventBus eventBus) {

70

71 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

72 tableSelectionView.setPresenter(this);

73

74 // For table changes with the tableSelector:

75 final HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

76 tableChangeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {

77 @Override

78 public void onChange(final ChangeEvent event) {

79 // Fire a table change event so that other views (e.g. the details view) know about the change and can

80 // update themselves.

81 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTableName()));

82

83 // Update the browser title because there's place change and the setPlace() method will not be called.

84 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

85 }

86 });

87

88 // For quick find changes with the quick find box:

89 final HasChangeHandlers quickFindBox = tableSelectionView.getQuickFindBox();

90 quickFindChangeHandlerRegistration = quickFindBox.addChangeHandler(new ChangeHandler() {

91 @Override

92 public void onChange(final ChangeEvent event) {

93 // Fire a quickfind change event so that other views (e.g. the details view) know about the change and

94 // can

95 // update themselves.

96 eventBus.fireEvent(new QuickFindChangeEvent(tableSelectionView.getQuickFindText()));

97

98 // Update the browser title because there's place change and the setPlace() method will not be called.

99 // TODO? Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

100 }

101 });

102

103 // For locale changes with the localeSelector:

104 final HasChangeHandlers localeSelector = tableSelectionView.getLocaleSelector();

105 localeChangeHandlerRegistration = localeSelector.addChangeHandler(new ChangeHandler() {

106 @Override

107 public void onChange(final ChangeEvent event) {

108 // Show the translated version of the document title and the table names:

109 localeID = tableSelectionView.getSelectedLocale();

110 fillView(tableSelectionView);

111

112 // Fire a locale change event so that other views (e.g. the details view) know about the change and can

113 // update themselves.

114 eventBus.fireEvent(new LocaleChangeEvent(localeID));

115 }

116 });

117

118 fillView(tableSelectionView);

119

120 // we're done, set the widget

121 containerWidget.setWidget(tableSelectionView.asWidget());

122 }

123

124 private void fillView(final TableSelectionView tableSelectionView) {

125 // get the table names, table titles and default table index for the current document

126 final AsyncCallback<DocumentInfo> callback = new AsyncCallback<DocumentInfo>() {

127 @Override

128 public void onFailure(final Throwable caught) {

129 // TODO: create a way to notify users of asynchronous callback failures

130 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo()");

131 }

132

133 @Override

134 public void onSuccess(final DocumentInfo result) {

135 tableSelectionView.setTableSelection(result.getTableNames(), result.getTableTitles());

136

137 if (tableName == null || tableName.isEmpty()) {

138 tableName = result.getTableNames().get(result.getDefaultTableIndex());

139 }

140

141 tableSelectionView.setSelectedTableName(tableName);

142

143 tableSelectionView.setLocaleList(result.getLocaleIDs(), result.getLocaleTitles());

144 tableSelectionView.setSelectedLocale(localeID);

145

146 documentTitle = result.getTitle();

147 tableSelectionView.setDocumentTitle(documentTitle);

148 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());

149 }

150 };

151 OnlineGlomServiceAsync.Util.getInstance().getDocumentInfo(documentID, localeID, callback);

152

153 // Show the quickFind text that was specified by the URL token:

154 tableSelectionView.setQuickFindText(quickFind);

155 }

156

157 // This method will be called before the {@link TableSelectionActivity#start(AcceptsOneWidget, EventBus)} method and

158 // any time the Place changes after the start method has been called.

159 public void setPlace(final HasSelectableTablePlace place) {

160 documentID = place.getDocumentID();

161 tableName = place.getTableName();

162 localeID = place.getLocaleID();

163

164 try {

165 final ListPlace asPlace = (ListPlace) place;

166 quickFind = asPlace.getQuickFind();

167 } catch (final ClassCastException ex) {

168 quickFind = "";

169 }

170

171 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

172

173 // Update the selected table if it's not correct.

174 if (!tableSelectionView.getSelectedTableName().equals(tableName)) {

175 tableSelectionView.setSelectedTableName(tableName);

176 }

177

178 // show the 'back to list' link if we're at a DetailsPlace, hide it otherwise

179 if (place instanceof DetailsPlace) {

180 tableSelectionView.setBackLinkVisible(true);

181 tableSelectionView.setBackLink(documentID, tableName, localeID, ""); // TODO: quickfind?

182 } else if (place instanceof ListPlace) {

183 tableSelectionView.setBackLinkVisible(false);

184 }

185

186 fillView(tableSelectionView);

187 }

188

189 private void clearView() {

190 clientFactory.getTableSelectionView().clear();

191

192 if (tableChangeHandlerRegistration != null) {

193 tableChangeHandlerRegistration.removeHandler();

194 tableChangeHandlerRegistration = null;

195 }

196

197 if (quickFindChangeHandlerRegistration != null) {

198 quickFindChangeHandlerRegistration.removeHandler();

199 quickFindChangeHandlerRegistration = null;

200 }

201

202 if (localeChangeHandlerRegistration != null) {

203 localeChangeHandlerRegistration.removeHandler();

204 localeChangeHandlerRegistration = null;

205 }

206 }

207

208 /*

209 * (non-Javadoc)

210 *

211 * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()

212 */

213 @Override

214 public void onCancel() {

215 clearView();

216 }

217

218 /*

219 * (non-Javadoc)

220 *

221 * @see com.google.gwt.activity.shared.AbstractActivity#onStop()

222 */

223 @Override

224 public void onStop() {

225 clearView();

226 }

227

228 /*

229 * (non-Javadoc)

230 *

231 * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)

232 */

233 @Override

234 public void goTo(final Place place) {

235 clientFactory.getPlaceController().goTo(place);

236 }

237

238 }