2 * Copyright (C) 2011 Openismus GmbH
4 * This file is part of GWT-Glom.
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.
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
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/>.
20 package org.glom.web.client.activity;
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.client.ui.View;
30 import org.glom.web.shared.DocumentInfo;
32 import com.google.gwt.activity.shared.AbstractActivity;
33 import com.google.gwt.core.client.GWT;
34 import com.google.gwt.event.dom.client.ChangeEvent;
35 import com.google.gwt.event.dom.client.ChangeHandler;
36 import com.google.gwt.event.dom.client.HasChangeHandlers;
37 import com.google.gwt.event.shared.EventBus;
38 import com.google.gwt.event.shared.HandlerRegistration;
39 import com.google.gwt.place.shared.Place;
40 import com.google.gwt.user.client.Window;
41 import com.google.gwt.user.client.rpc.AsyncCallback;
42 import com.google.gwt.user.client.ui.AcceptsOneWidget;
45 * @author Ben Konrath <ben@bagu.org>
48 public class TableSelectionActivity extends AbstractActivity implements View.Presenter {
49 private final ClientFactory clientFactory;
50 private String documentID;
51 private String documentTitle;
52 private String tableName;
53 private HandlerRegistration changeHandlerRegistration = null;
55 // This activity isn't properly configured until the List or Details Place is set with the appropriate methods
56 public TableSelectionActivity(ClientFactory clientFactory) {
57 this.clientFactory = clientFactory;
61 * Invoked by the ActivityManager to start a new Activity
64 public void start(AcceptsOneWidget containerWidget, final EventBus eventBus) {
66 final TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();
67 tableSelectionView.setPresenter(this);
69 // For table changes with the tableSelector:
70 HasChangeHandlers tableSelector = tableSelectionView.getTableSelector();
71 changeHandlerRegistration = tableSelector.addChangeHandler(new ChangeHandler() {
73 public void onChange(ChangeEvent event) {
74 // Fire an table change event so that other views (e.g. the details view) know about the change and can
76 eventBus.fireEvent(new TableChangeEvent(tableSelectionView.getSelectedTableName()));
78 // Update the browser title because there's place change and the setPlace() method will not be called.
79 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());
83 // get the table names, table titles and default table index for the current document
84 AsyncCallback<DocumentInfo> callback = new AsyncCallback<DocumentInfo>() {
85 public void onFailure(Throwable caught) {
86 // TODO: create a way to notify users of asynchronous callback failures
87 GWT.log("AsyncCallback Failed: OnlineGlomService.getDocumentInfo()");
90 public void onSuccess(DocumentInfo result) {
91 tableSelectionView.setTableSelection(result.getTableNames(), result.getTableTitles());
93 if (tableName == null || tableName.isEmpty()) {
94 tableName = result.getTableNames().get(result.getDefaultTableIndex());
97 tableSelectionView.setSelectedTableName(tableName);
98 documentTitle = result.getTitle();
99 tableSelectionView.setDocumentTitle(documentTitle);
100 Window.setTitle(documentTitle + ": " + result.getTableTitles().get(result.getDefaultTableIndex()));
103 OnlineGlomServiceAsync.Util.getInstance().getDocumentInfo(documentID, callback);
105 // we're done, set the widget
106 containerWidget.setWidget(tableSelectionView.asWidget());
109 // This method will be called before the {@link TableSelectionActivity#start(AcceptsOneWidget, EventBus)} method and
110 // any time the Place changes after the start method has been called.
111 public void setPlace(HasSelectableTablePlace place) {
112 documentID = place.getDocumentID();
113 tableName = place.getTableName();
115 TableSelectionView tableSelectionView = clientFactory.getTableSelectionView();
117 // Update the selected table if it's not correct.
118 if (!tableSelectionView.getSelectedTableName().equals(tableName)) {
119 tableSelectionView.setSelectedTableName(tableName);
122 // Update the browser title if document title has already been setup.
123 if (documentTitle != null && !documentTitle.isEmpty()) {
124 Window.setTitle(documentTitle + ": " + tableSelectionView.getSelectedTableTitle());
127 // show the 'back to list' link if we're at a DetailsPlace, hide it otherwise
128 if (place instanceof DetailsPlace) {
129 tableSelectionView.setBackLinkVisible(true);
130 tableSelectionView.setBackLink(documentID, tableName);
131 } else if (place instanceof ListPlace) {
132 tableSelectionView.setBackLinkVisible(false);
136 private void clearView() {
137 clientFactory.getTableSelectionView().clear();
138 if (changeHandlerRegistration != null) {
139 changeHandlerRegistration.removeHandler();
140 changeHandlerRegistration = null;
147 * @see com.google.gwt.activity.shared.AbstractActivity#onCancel()
150 public void onCancel() {
157 * @see com.google.gwt.activity.shared.AbstractActivity#onStop()
160 public void onStop() {
167 * @see org.glom.web.client.ui.View.Presenter#goTo(com.google.gwt.place.shared.Place)
170 public void goTo(Place place) {
171 clientFactory.getPlaceController().goTo(place);