Package org.onemind.swingweb.client.gwt.ui

Source Code of org.onemind.swingweb.client.gwt.ui.MenuUIHandler

/*
* Copyright (C) 2004 TiongHiang Lee
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not,  write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
* Email: thlee@onemindsoft.org
*/

package org.onemind.swingweb.client.gwt.ui;

import java.util.List;
import org.onemind.swingweb.client.core.AbstractClient;
import org.onemind.swingweb.client.dom.DomNode;
import org.onemind.swingweb.client.gwt.widget.MenuBar;
import com.google.gwt.user.client.ui.MenuItem;
public class MenuUIHandler extends MenuItemUIHandler
{
    public MenuUIHandler(AbstractClient client)
    {
        super(client);
    }

    public Object createComponentInstance(Object parent, DomNode element)
    {
        MenuBar menuBar = new MenuBar(true);
        return menuBar;
    }

    protected void handleChildrenMenu(AbstractClient rootHandler, MenuBar menu, DomNode element)
    {
        menu.clearItems();
        List nodes = getComponentNodes(element);
        for (int i = 0; i < nodes.size(); i++)
        {
            DomNode childNode = (DomNode) nodes.get(i);
            Object childCom = rootHandler.handle(menu, childNode);
            if (childCom instanceof MenuItem)
            {
                MenuItem item = (MenuItem) childCom;
                menu.addItem(item);
            } else if (childCom instanceof MenuBar)
            {
                MenuBar mb = (MenuBar) childCom;
                menu.addItem(mb.getTitle(), mb);
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    public Object updateUI(Object com, DomNode element)
    {
        if (com instanceof MenuBar)
        {
            MenuBar bar = (MenuBar) com;
            handleChildrenMenu(getClient(), bar, element);
            String label = element.getAttribute("label");
            bar.setTitle(label);
        }
        return super.updateUI(com, element);
    }
}
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