Enable the CellTable Pager when more than 20 rows need to be viewed.

[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / OnlineGlom.java

/*
 * Copyright (C) 2010, 2011 Openismus GmbH
 *
 * This file is part of GWT-Glom.
 *
 * GWT-Glom is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * GWT-Glom is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.glom.web.client;

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

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class OnlineGlom implements EntryPoint {

        private VerticalPanel mainVPanel = new VerticalPanel();
        private HorizontalPanel hPanel = new HorizontalPanel();
        private static ListBox dropBox = new ListBox();
        private LayoutListView table = null;
        private String documentName = "";

        public void onModuleLoad() {
                dropBox.addChangeHandler(new ChangeHandler() {
                        public void onChange(ChangeEvent event) {
                                updateTable();
                        }
                });

                hPanel.add(new Label("Table:"));
                hPanel.add(dropBox);

                mainVPanel.add(hPanel);

                // associate the main panel with the HTML host page
                RootPanel.get().add(mainVPanel);

                // set up the callback object.
                AsyncCallback<GlomDocument> callback = new AsyncCallback<GlomDocument>() {
                        public void onFailure(Throwable caught) {
                                // FIXME: need to deal with failure
                                System.out.println("AsyncCallback Failed: OnlineGlomService.getGlomDocument()");
                        }

                        public void onSuccess(GlomDocument result) {
                                String[] tableNames = result.getTableNames();
                                String[] tableTitles = result.getTableTitles();
                                for (int i = 0; i < tableNames.length; i++) {
                                        dropBox.addItem(tableTitles[i], tableNames[i]);
                                }
                                dropBox.setSelectedIndex(result.getDefaultTableIndex());
                                documentName = result.getTitle();
                                updateTable();
                        }
                };

                // make the call to get the filled in GlomDocument
                OnlineGlomServiceAsync.Util.getInstance().getGlomDocument(callback);
        }

        private void updateTable() {

                // set up the callback object.
                AsyncCallback<LayoutListTable> callback = new AsyncCallback<LayoutListTable>() {
                        public void onFailure(Throwable caught) {
                                // FIXME: need to deal with failure
                                System.out.println("AsyncCallback Failed: OnlineGlomService.getLayoutListTable()");
                        }

                        public void onSuccess(LayoutListTable result) {
                                if (table != null)
                                        mainVPanel.remove(table);
                                table = new LayoutListView(result.getColumnTitles(), result.getNumRows());
                                mainVPanel.add(table);
                                Window.setTitle("OnlineGlom - " + documentName + ": " + dropBox.getItemText(dropBox.getSelectedIndex()));
                        }
                };

                String selectedTable = dropBox.getValue(dropBox.getSelectedIndex());
                OnlineGlomServiceAsync.Util.getInstance().getLayoutListTable(selectedTable, callback);

        }

        // FIXME find a better way to do this
        public static String getCurrentTableName() {
                return dropBox.getValue(dropBox.getSelectedIndex());
        }
}