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.TableChangeEvent;

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

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

27 import org.glom.web.shared.GlomDocument;

28

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

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

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

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

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

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

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

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

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

38

39 /**

40 * @author Ben Konrath <ben@bagu.org>

41 *

42 */

43 public class TableSelectionActivity extends AbstractActivity {

44 private final ClientFactory clientFactory;

45 private String documentTitle;

46 private HandlerRegistration changeHandlerRegistration = null;

47

48 public TableSelectionActivity(ListPlace place, ClientFactory clientFactory) {

49 this.documentTitle = place.getDocumentTitle();

50 this.clientFactory = clientFactory;

51 }

52

53 /**

54 * Invoked by the ActivityManager to start a new Activity

55 */

56 @Override

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

58 Window.setTitle("Online Glom - " + documentTitle);

59

60 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

61

62 HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

63

64 changeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {

65 @Override

66 public void onChange(ChangeEvent event) {

67 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTable()));

68 }

69 });

70

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

72 AsyncCallback<GlomDocument> callback = new AsyncCallback<GlomDocument>() {

73 public void onFailure(Throwable caught) {

74 // FIXME: need to deal with failure

75 System.out.println("AsyncCallback Failed: OnlineGlomService.getGlomDocument()");

76 }

77

78 public void onSuccess(GlomDocument result) {

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

80 tableSelectionView.setTableSelectedIndex(result.getDefaultTableIndex());

81 }

82 };

83 OnlineGlomServiceAsync.Util.getInstance().getGlomDocument(documentTitle, callback);

84

85 // we're done, set the widget

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

87 }

88

89 private void shutdown() {

90 clientFactory.getTableSelectionView().clear();

91 if (changeHandlerRegistration != null) {

92 changeHandlerRegistration.removeHandler();

93 changeHandlerRegistration = null;

94 }

95 }

96

97 /*

98 * (non-Javadoc)

99 *

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

101 */

102 @Override

103 public void onCancel() {

104 shutdown();

105 }

106

107 /*

108 * (non-Javadoc)

109 *

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

111 */

112 @Override

113 public void onStop() {

114 shutdown();

115 }

116 }