001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (c) Alkacon Software GmbH & Co. KG (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.ui.apps.modules.edit;
029
030import org.opencms.ui.components.CmsAutoItemCreatingComboBox;
031import org.opencms.util.CmsFileUtil;
032
033import java.util.Arrays;
034
035import com.vaadin.v7.data.Container;
036
037/**
038 * Helper class used when new options are automatically added to a site selector combo box.<p>
039 */
040public class CmsSiteSelectorNewValueHandler implements CmsAutoItemCreatingComboBox.I_NewValueHandler {
041
042    /** The property containing the caption. */
043    private String m_captionPropertyId;
044
045    /**
046     * Creates a new instance.<p>
047     *
048     * @param captionPropertyId the item property containing the caption
049     */
050    public CmsSiteSelectorNewValueHandler(String captionPropertyId) {
051
052        m_captionPropertyId = captionPropertyId;
053    }
054
055    /**
056     * @see org.opencms.ui.components.CmsAutoItemCreatingComboBox.I_NewValueHandler#ensureItem(com.vaadin.v7.data.Container, java.lang.Object)
057     */
058    public Object ensureItem(Container cnt, Object id) {
059
060        if (id == null) {
061            return null;
062        }
063        String idStr = (String)id;
064        for (String path : Arrays.asList(idStr, CmsFileUtil.toggleTrailingSeparator(idStr))) {
065            if (cnt.containsId(path)) {
066                return path;
067            }
068        }
069        idStr = CmsFileUtil.addTrailingSeparator(idStr);
070        cnt.addItem(idStr).getItemProperty(m_captionPropertyId).setValue(idStr);
071        return idStr;
072    }
073}