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.DetailsPlace;

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

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

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

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

30

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

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

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

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

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

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

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

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

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

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

41 import com.google.gwt.user.client.ui.ListBox;

42

43 /**

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

45 *

46 */

47 public class TableSelectionActivity extends AbstractActivity implements TableSelectionView.Presenter {

48 private final ClientFactory clientFactory;

49 private String documentID;

50 private String documentTitle;

51 private String tableName;

52 private HandlerRegistration changeHandlerRegistration = null;

53

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

55 public TableSelectionActivity(ClientFactory clientFactory) {

56 this.clientFactory = clientFactory;

57 }

58

59 /**

60 * Invoked by the ActivityManager to start a new Activity

61 */

62 @Override

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

64

65 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

66 tableSelectionView.setPresenter(this);

67

68 HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();

69

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

71 @Override

72 public void onChange(ChangeEvent event) {

73 ListBox listBox = (ListBox) event.getSource();

74 int selectedIndex = listBox.getSelectedIndex();

75 eventBus.fireEvent(new TableChangeEvent(selectedIndex < 0 ? "" : listBox.getValue(selectedIndex)));

76 Window.setTitle(documentTitle + (selectedIndex < 0 ? "" : ": " + listBox.getItemText(selectedIndex)));

77 }

78 });

79

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

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

82 public void onFailure(Throwable caught) {

83 // FIXME: need to deal with failure

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

85 }

86

87 public void onSuccess(GlomDocument result) {

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

89

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

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

92 }

93

94 tableSelectionView.setSelectedTableName(tableName);

95 documentTitle = result.getTitle();

96 Window.setTitle(documentTitle + ": " + result.getTableTitles().get(result.getDefaultTableIndex()));

97 }

98 };

99 OnlineGlomServiceAsync.Util.getInstance().getGlomDocument(documentID, callback);

100

101 // we're done, set the widget

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

103 }

104

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

106 public void setPlace(HasSelectableTablePlace place) {

107 this.documentID = place.getDocumentID();

108 this.tableName = place.getTableName();

109

110 TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();

111

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

113 if (place instanceof DetailsPlace) {

114 tableSelectionView.setBackLinkVisible(true);

115 tableSelectionView.setBackLink(documentID, tableName);

116 } else if (place instanceof ListPlace) {

117 tableSelectionView.setBackLinkVisible(false);

118 }

119 }

120

121 private void clearView() {

122 clientFactory.getTableSelectionView().clear();

123 if (changeHandlerRegistration != null) {

124 changeHandlerRegistration.removeHandler();

125 changeHandlerRegistration = null;

126 }

127 }

128

129 /*

130 * (non-Javadoc)

131 *

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

133 */

134 @Override

135 public void onCancel() {

136 clearView();

137 }

138

139 /*

140 * (non-Javadoc)

141 *

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

143 */

144 @Override

145 public void onStop() {

146 clearView();

147 }

148

149 /*

150 * (non-Javadoc)

151 *

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

153 */

154 @Override

155 public void goTo(Place place) {

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

157 }

158

159 }