com.edgenius.wiki.render.handler.PageInfoHandler.java Source code

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Here is the source code for com.edgenius.wiki.render.handler.PageInfoHandler.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.handler;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

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

import com.edgenius.core.model.User;
import com.edgenius.core.service.MessageService;
import com.edgenius.core.service.UserReadingService;
import com.edgenius.core.util.DateUtil;
import com.edgenius.wiki.gwt.client.model.RenderPiece;
import com.edgenius.wiki.gwt.client.model.TextModel;
import com.edgenius.wiki.gwt.client.server.utils.GwtUtils;
import com.edgenius.wiki.gwt.client.server.utils.NameConstants;
import com.edgenius.wiki.gwt.client.server.utils.RichTagUtil;
import com.edgenius.wiki.gwt.server.UserUtil;
import com.edgenius.wiki.model.AbstractPage;
import com.edgenius.wiki.render.RenderContext;
import com.edgenius.wiki.render.object.ObjectHandler;
import com.edgenius.wiki.render.object.RenderHandlerException;
import com.edgenius.wiki.util.WikiUtil;

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

    private AbstractPage page;
    private MessageService messageService;
    private UserReadingService userReadingService;

    public List<RenderPiece> handle(RenderContext renderContext, Map<String, String> values)
            throws RenderHandlerException {
        if (page == null) {
            throw new RenderHandlerException("Invalid content. {pageinfo} must inside a page.");
        }
        String type = StringUtils.trim(values.get(NameConstants.TYPE));
        if (StringUtils.isEmpty(type)
                || (!NameConstants.CREATOR.equals(type) && !NameConstants.MODIFIER.equals(type))) {
            log.warn("Unable to find valid type parameter from PageInfoMacro");
            throw new RenderHandlerException(
                    "Type parameter is invalid, either creator or modifier. Sample {pageinfo:type=creator}");
        }

        User user = (NameConstants.CREATOR.equals(type)) ? page.getCreator() : page.getModifier();
        if (user == null) {
            //anonymous user
            user = userReadingService.getUser(-1);
        }
        Date date = (NameConstants.CREATOR.equals(type)) ? page.getCreatedDate() : page.getModifiedDate();

        String value = StringUtils.trimToEmpty(values.get("value"));

        List<RenderPiece> pieces = new ArrayList<RenderPiece>();
        pieces.add(new TextModel("<div class=\"macroPageinfo\" " + NameConstants.WAJAX + "=\""
                + RichTagUtil.buildWajaxAttributeString(this.getClass().getName(), values) + "\">"));

        StringBuffer buf = new StringBuffer();

        if (value.length() == 0 || "portrait".equals(value)) {
            String portraitUrl = UserUtil.getPortraitUrl(user.getPortrait());
            buf.append("<div class=\"portrait\">")
                    .append(GwtUtils.getUserPortraitHTML(portraitUrl, user.getFullname(), -1)).append("</div>");
            pieces.add(new TextModel(buf.toString()));
        }

        if (value.length() == 0 || "name".equals(value)) {
            String msg = NameConstants.CREATOR.equals(type) ? messageService.getMessage("created.by")
                    : messageService.getMessage("last.updated.by");
            pieces.add(new TextModel("<div class=\"name\">" + msg + " "));
            pieces.add(WikiUtil.createUserLinkModel(user));
            pieces.add(new TextModel("</div>"));
        }

        if ((value.length() == 0 || "date".equals(value)) && date != null) {
            buf = new StringBuffer();
            String showDate = DateUtil.toDisplayDateWithPrep(WikiUtil.getUser(), date, messageService);
            buf.append("<div class=\"date\">").append(showDate).append("</div>");
            pieces.add(new TextModel(buf.toString()));
        }

        if ("status".equals(value)) {
            buf = new StringBuffer();
            buf.append("<div class=\"status\">").append(user.getSetting().getStatus()).append("</div>");
            pieces.add(new TextModel(buf.toString()));
        }
        pieces.add(new TextModel("</div>"));

        return pieces;
    }

    public void renderStart(AbstractPage page) {
        this.page = page;
    }

    public void renderEnd() {
    }

    public void init(ApplicationContext context) {
        messageService = (MessageService) context.getBean(MessageService.SERVICE_NAME);
        userReadingService = (UserReadingService) context.getBean(UserReadingService.SERVICE_NAME);

    }

}