ch.heftix.mailxel.client.OnDemandTabPanel.java Source code

Introduction

Here is the source code for ch.heftix.mailxel.client.OnDemandTabPanel.java

Source

/*
 * Copyright (C) 2008-2011 by Simon Hefti. All rights reserved.
 * Licensed under the EPL 1.0 (Eclipse Public License).
 * (see http://www.eclipse.org/legal/epl-v10.html)
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
 * 
 * Initial Developer: Simon Hefti
 */
package ch.heftix.mailxel.client;

import com.google.gwt.user.client.ui.TabPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * single child: no tabs displayed; more children: display first widget in first
 * tab and put second widget in additional tab
 */
public class OnDemandTabPanel extends VerticalPanel {

    private Widget single = null;
    private String singleTabText = null;
    private TabPanel tabPanel = null;

    public OnDemandTabPanel() {

    }

    public void add(final Widget w, final String tabText) {
        if (null == single) {
            single = w;
            singleTabText = tabText;
            super.add(w);
        } else {
            if (null == tabPanel) {
                // morph to tab Panel
                tabPanel = new TabPanel();
                remove(single);
                tabPanel.add(single, singleTabText);
                add(tabPanel);
            }
            tabPanel.add(w, tabText);
            tabPanel.selectTab(tabPanel.getWidgetCount() - 1);
        }
    }

}