com.edgenius.wiki.render.macro.ImageSliderMacro.java Source code

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Here is the source code for com.edgenius.wiki.render.macro.ImageSliderMacro.java

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/* 
 * =============================================================
 * Copyright (C) 2007-2011 Edgenius (http://www.edgenius.com)
 * =============================================================
 * License Information: http://www.edgenius.com/licensing/edgenius/2.0/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2.0
 * as published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * http://www.gnu.org/licenses/gpl.txt
 *  
 * ****************************************************************
 */
package com.edgenius.wiki.render.macro;

import java.util.ListIterator;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;

import com.edgenius.core.util.AuditLogger;
import com.edgenius.wiki.gwt.client.html.HTMLNode;
import com.edgenius.wiki.gwt.client.server.utils.NameConstants;
import com.edgenius.wiki.gwt.client.server.utils.RichTagUtil;
import com.edgenius.wiki.render.MacroParameter;
import com.edgenius.wiki.render.MalformedMacroException;
import com.edgenius.wiki.render.RenderContext;

/**
 * {slider:width=923|height=341}
 * 
 * @author Dapeng.Ni
 */
public class ImageSliderMacro extends BaseMacro {
    private static final int WIDTH = 920;
    private static final int HEIGHT = 340;

    //JDK1.6 @Override
    public String[] getName() {
        return new String[] { "slider", "slide" };
    }

    @Override
    public String getHTMLIdentifier() {
        return "<div class='macroSlider'>";
    }

    //JDK1.6 @Override
    public void execute(StringBuffer buffer, MacroParameter params) throws MalformedMacroException {

        RenderContext renderContext = params.getRenderContext();

        //get width and height
        int width = NumberUtils.toInt(params.getParam("width"), 0);
        int height = NumberUtils.toInt(params.getParam("height"), 0);
        width = width == 0 ? WIDTH : width;
        height = height == 0 ? HEIGHT : height;

        String sliderId = "macroSliderDiv" + renderContext.createIncremetalKey();
        buffer.append("<div class=\"macroSlider\"  " + NameConstants.WAJAX + "=\""
                + RichTagUtil.buildWajaxAttributeString(this.getClass().getName(), params.getParams()) + "\">");

        buffer.append("<div class=\"slider-wrapper theme-default\">");
        buffer.append("<div id=\"").append(sliderId).append("\" class=\"nivoSlider\" style=\"width:");
        buffer.append(width).append("px;height:").append(height).append("px\">");

        buffer.append(params.getContent());
        buffer.append("</div></div>");

        String jsURL = renderContext.buildDownloadURL("widgets/jquery/nivo-slider/jquery.nivo.slider.pack.js");
        if (!RenderContext.RENDER_TARGET_RICH_EDITOR.equals(renderContext.getRenderTarget())
                && !StringUtils.isEmpty(jsURL)) {
            //append JS and styles - this part not assume for editor but only for viewer.
            buffer.append("<link rel=\"stylesheet\" href=\"")
                    .append(renderContext.buildDownloadURL("widgets/jquery/nivo-slider/themes/default/default.css"))
                    .append("\" type=\"text/css\" media=\"screen\" />");
            buffer.append("<link rel=\"stylesheet\" href=\"")
                    .append(renderContext.buildDownloadURL("widgets/jquery/nivo-slider/nivo-slider.css"))
                    .append("\" type=\"text/css\" media=\"screen\" />");

            buffer.append("<script type=\"text/javascript\" src=\"").append(jsURL).append("\"></script>");
            buffer.append("<script type=\"text/javascript\"> $(document).ready(function() { $('#").append(sliderId)
                    .append("').nivoSlider();});</script>");
        }
        buffer.append("</div>");

    }

    public boolean isPaired() {
        return true;
    }

    @Override
    protected void replaceHTML(HTMLNode node, ListIterator<HTMLNode> iter, RenderContext context) {
        resetMacroMarkup(TIDY_STYLE_BLOCK, node, iter, getMacroMarkupString(node, "slider"), "{slider}");

        //Reset all notes, keep images, remove JS 
        //<div class=macroSlider> <div class=slider-wrapper><div class=nivoSlider> ( keep these parts as they are suppose to be images ) 
        //</div></div> (delete these part, suppose to be javascript </div>

        HTMLNode pair = node.getPair();
        if (pair == null) {
            AuditLogger.error("Slide macro doesn't find paired div");
            return;
        }
        boolean cleanJS = false;
        HTMLNode subnode = node.next();
        while (subnode != null) {
            if (subnode == pair)
                break;
            if (!subnode.isTextNode() && subnode.getAttributes() != null) {
                String clz = subnode.getAttributes().get(NameConstants.CLASS);
                if (StringUtils.contains(clz, "slider-wrapper")) {
                    subnode.reset("", true);
                    if (subnode.getPair() != null) {
                        subnode.getPair().reset("", true);
                    }
                } else if ("nivoSlider".equals(clz)) {
                    subnode.reset("", true);
                    if (subnode.getPair() != null) {
                        subnode.getPair().reset("", true);
                        cleanJS = true;
                        //jump to this nivoSlider div end, in while() end, it suppose move to slider-wrapper end div.
                        subnode = subnode.getPair();
                    }
                }
            }

            if (cleanJS) {
                //clean script tag, and inside text and link tag - but now clean all of them
                // ("script".equals(subnode.getTagName()) || "link".equals(subnode.getTagName()))
                subnode.reset("", true);
                if (subnode.getPair() != null) {
                    subnode.getPair().reset("", true);
                }
            }

            subnode = subnode.next();
        }
    }

}