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.components;
029
030import org.opencms.util.CmsStringUtil;
031import org.opencms.util.CmsUUID;
032
033import com.vaadin.ui.JavaScript;
034import com.vaadin.v7.ui.RichTextArea;
035
036/**
037 * Helper class for using rich text area in OpenCms.<p>
038 */
039public class CmsRichTextAreaV7 extends RichTextArea {
040
041    /**vaadin serial id. */
042    private static final long serialVersionUID = 1L;
043
044    /**CSS class name. */
045    private static final String CSS_CLASSNAME = "richopensans";
046
047    /**Style name. */
048    private String m_styleName = "";
049
050    /**
051     * Public constructor.<p>
052     */
053    public CmsRichTextAreaV7() {
054
055        addStyleName("o-richtextarea-reduced");
056        setFontStyle();
057    }
058
059    /**
060     * Sets the font stype to Open Sans.<p>
061     * Has to be called after every refresh of the UI. For example after switching tabs on tab-sheets..<p>
062     */
063    public void setFontStyle() {
064
065        if (!CmsStringUtil.isEmptyOrWhitespaceOnly(m_styleName)) {
066            removeStyleName(m_styleName);
067        }
068        String id = new CmsUUID().getStringValue();
069        m_styleName = CSS_CLASSNAME + "_" + id;
070        addStyleName(m_styleName);
071        String js = "var elements = document.getElementsByClassName('"
072            + m_styleName
073            + "');"
074            + "var iframeContainer = elements[0];"
075            + "var iframe = iframeContainer.getElementsByTagName('iframe')[0];"
076            + "var iframeBody = iframe.contentDocument.getElementsByTagName('body')[0];"
077            + "iframeBody.style.fontFamily='\"Open Sans\", sans-serif';";
078
079        JavaScript.getCurrent().execute(js);
080
081    }
082}