com.edgenius.wiki.ext.tabs.TabsHandler.java Source code

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Here is the source code for com.edgenius.wiki.ext.tabs.TabsHandler.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.ext.tabs;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;

import com.edgenius.wiki.gwt.client.model.RenderPiece;
import com.edgenius.wiki.gwt.client.model.TextModel;
import com.edgenius.wiki.model.AbstractPage;
import com.edgenius.wiki.plugin.PluginRenderException;
import com.edgenius.wiki.plugin.PluginService;
import com.edgenius.wiki.render.Macro;
import com.edgenius.wiki.render.RenderContext;
import com.edgenius.wiki.render.object.ObjectHandler;
import com.edgenius.wiki.render.object.RenderHandlerException;

/**
 * @author Dapeng.Ni
 */
public class TabsHandler implements ObjectHandler {
    private static final Logger log = LoggerFactory.getLogger(TabsHandler.class);
    private PluginService pluginService;

    /*
     * replace image text with download servlet url: /download?spaceUname=xxx&uuid=xxx
     */
    public List<RenderPiece> handle(RenderContext renderContext, Map<String, String> values)
            throws RenderHandlerException {

        Map<String, Map<String, String>> tabsMap = (Map<String, Map<String, String>>) renderContext
                .getGlobalParam(TabsHandler.class.getName());
        if (tabsMap == null || tabsMap.size() == 0) {
            //No valid tab found for tabs
            return null;
        }

        String grpKey = values.get(Macro.GROUP_KEY);

        //tabKey and tabName - see TabMacro.java
        Map<String, String> tabList = tabsMap.get(grpKey);
        if (tabList == null || tabList.size() == 0) {
            //No valid tab found for tabs
            return null;
        }

        try {
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("tabsID", grpKey);
            String sel = StringUtils.trim(values.get("select"));
            if (!StringUtils.isBlank(sel)) {
                int idx = 0;
                for (Entry<String, String> entry : tabList.entrySet()) {
                    if (StringUtils.equalsIgnoreCase(entry.getValue(), sel)) {
                        map.put("selectTab", idx);
                        break;
                    }
                    idx++;
                }
            }
            map.put("tabMap", tabList);
            return Arrays
                    .asList((RenderPiece) new TextModel(pluginService.renderMacro("tabs", map, renderContext)));
        } catch (PluginRenderException e) {
            log.error("Unable to render Tab plugin", e);
            throw new RenderHandlerException("Tabs can't be rendered.");
        }

    }

    public void renderStart(AbstractPage page) {

    }

    public void renderEnd() {

    }

    public void init(ApplicationContext context) {
        pluginService = (PluginService) context.getBean(PluginService.SERVICE_NAME);
    }
}