001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (C) Alkacon Software (http://www.alkacon.com)
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * For further information about Alkacon Software, please see the
018 * company website: http://www.alkacon.com
019 *
020 * For further information about OpenCms, please see the
021 * project website: http://www.opencms.org
022 *
023 * You should have received a copy of the GNU Lesser General Public
024 * License along with this library; if not, write to the Free Software
025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
026 */
027
028package org.opencms.ade.containerpage.client.ui;
029
030import org.opencms.ade.containerpage.client.CmsContainerpageHandler;
031import org.opencms.gwt.client.ui.I_CmsButton;
032
033import com.google.gwt.event.dom.client.ClickEvent;
034
035/**
036 * Option bar button for displaying resource information.<p>
037 */
038public class CmsToolbarInfoButton extends A_CmsToolbarOptionButton {
039
040    /**
041     * Constructor.<p>
042     *
043     * @param handler the container-page handler
044     */
045    public CmsToolbarInfoButton(CmsContainerpageHandler handler) {
046
047        super(I_CmsButton.ButtonData.INFO_BUTTON, handler);
048    }
049
050    /**
051     * @see org.opencms.ade.containerpage.client.ui.A_CmsToolbarOptionButton#isOptionAvailable(org.opencms.ade.containerpage.client.ui.CmsContainerPageElementPanel)
052     */
053    @Override
054    public boolean isOptionAvailable(CmsContainerPageElementPanel element) {
055
056        try {
057            element.getStructureId();
058            return true;
059        } catch (Throwable t) {
060            return false;
061        }
062    }
063
064    /**
065     * @see org.opencms.ade.containerpage.client.ui.A_CmsToolbarOptionButton#onElementClick(com.google.gwt.event.dom.client.ClickEvent, org.opencms.ade.containerpage.client.ui.CmsContainerPageElementPanel)
066     */
067    @Override
068    public void onElementClick(ClickEvent event, CmsContainerPageElementPanel element) {
069
070        getHandler().showElementInfo(element);
071    }
072
073}