com.edgenius.wiki.ext.todo.TodoHandler.java Source code

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Here is the source code for com.edgenius.wiki.ext.todo.TodoHandler.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.todo;

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

import org.apache.commons.lang.StringUtils;
import org.springframework.context.ApplicationContext;

import com.edgenius.wiki.ext.todo.model.Todo;
import com.edgenius.wiki.ext.todo.service.TodoService;
import com.edgenius.wiki.gwt.client.model.RenderPiece;
import com.edgenius.wiki.gwt.client.model.TextModel;
import com.edgenius.wiki.gwt.client.server.utils.NameConstants;
import com.edgenius.wiki.gwt.client.server.utils.RichTagUtil;
import com.edgenius.wiki.model.AbstractPage;
import com.edgenius.wiki.plugin.PluginRenderException;
import com.edgenius.wiki.plugin.PluginService;
import com.edgenius.wiki.render.RenderContext;
import com.edgenius.wiki.render.object.ObjectHandler;
import com.edgenius.wiki.render.object.RenderHandlerException;
import com.edgenius.wiki.security.WikiSecurityValues.WikiOPERATIONS;

/**
 * @author Dapeng.Ni
 */
public class TodoHandler implements ObjectHandler {
    private PluginService pluginService;
    private TodoService todoService;
    private boolean editable;

    public List<RenderPiece> handle(RenderContext renderContext, Map<String, String> values)
            throws RenderHandlerException {

        if (values == null || StringUtils.isBlank(values.get(NameConstants.NAME))) {
            throw new RenderHandlerException("TODO must have a name, i.e., {todo:name=work}");
        }

        try {
            //get unique index ID for same page Todos render
            Integer pageKey = (Integer) renderContext.getGlobalParam(TodoHandler.class.getName());
            if (pageKey == null)
                pageKey = 1;
            else
                ++pageKey;

            renderContext.putGlobalParam(TodoHandler.class.getName(), pageKey);

            String todoName = values.get(NameConstants.NAME).trim();
            String statusString = StringUtils.trimToEmpty(values.get("status"));
            String deleteAction = StringUtils.trimToEmpty(values.get("deleteon"));

            Map<String, Object> map = new HashMap<String, Object>();
            //keep original markup - but not put it into wajax attribute
            map.put("todoMarkup", values.remove("markup"));

            map.put("todoWajax", RichTagUtil.buildWajaxAttributeString(this.getClass().getName(), values));

            map.put("readonly", !editable);
            map.put("pageUuid", renderContext.getPageUuid());
            map.put("todoKey", pageKey);
            map.put("todoName", todoName);
            map.put("statuses", statusString);
            map.put("deleteAction", deleteAction);

            Todo todo = todoService.getTodoByName(renderContext.getPageUuid(), todoName);
            if (todo == null) {
                todo = new Todo();
            }
            todo.setStatusString(statusString, deleteAction);

            todoService.fillTodosAndStatuses(map, todo);

            return Arrays
                    .asList((RenderPiece) new TextModel(pluginService.renderMacro("todo", map, renderContext)));
        } catch (PluginRenderException e) {
            throw new RenderHandlerException("Todo can't be rendered.");
        }
    }

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

    }

    public void renderEnd() {
        //nothing
    }

    public void renderStart(AbstractPage page) {
        //!!! must set false for each render - This handler is cache in ObjectPool
        editable = false;
        List<WikiOPERATIONS> perms = page.getWikiOperations();
        if (perms != null) {
            //this is true when IndexService - it doesn't fill page permission at the moment
            for (WikiOPERATIONS wikiOPERATIONS : perms) {
                if (WikiOPERATIONS.PAGE_WRITE.equals(wikiOPERATIONS)) {
                    editable = true;
                    break;
                }
            }
        }
    }
}