Java tutorial
/* * ============================================================= * 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.io.FilenameUtils; import org.apache.commons.lang.StringEscapeUtils; import org.apache.commons.lang.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.ApplicationContext; import com.edgenius.core.repository.FileNode; import com.edgenius.core.repository.RepositoryException; import com.edgenius.core.service.MessageService; import com.edgenius.core.service.UserReadingService; import com.edgenius.core.util.DateUtil; import com.edgenius.wiki.WikiConstants; 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.RichTagUtil; import com.edgenius.wiki.gwt.client.server.utils.StringUtil; import com.edgenius.wiki.model.AbstractPage; import com.edgenius.wiki.model.Page; import com.edgenius.wiki.render.RenderContext; import com.edgenius.wiki.render.object.ObjectHandler; import com.edgenius.wiki.service.PageService; import com.edgenius.wiki.service.SpaceService; import com.edgenius.wiki.util.WikiUtil; /** * @author Dapeng.Ni */ public class RepoHandler implements ObjectHandler { private static final Logger log = LoggerFactory.getLogger(AttachmentHandler.class); private SpaceService spaceService; private List<FileNode> atts; private String spaceUname; private UserReadingService userReadingService; private MessageService messageService; private PageService pageService; private String pageUuid; private List<Page> pageTree; public List<RenderPiece> handle(RenderContext renderContext, Map<String, String> values) { List<RenderPiece> pieces = new ArrayList<RenderPiece>(); List<FileNode> files = new ArrayList<FileNode>(); if (atts != null) { files = getFileList(values != null ? values.get("filter") : null, renderContext.getPageVisibleAttachments()); } List<String> urls = new ArrayList<String>(); //try to find the image from repository for (FileNode node : files) { //found attachment urls.add(renderContext.buildDownloadURL(node.getFilename(), node.getNodeUuid(), true)); } int id = renderContext.createIncremetalKey(); StringBuffer attachBuf = new StringBuffer("<div aid=\"repository\" id=\"repository-").append(id) .append("\" class=\"").append(WikiConstants.mceNonEditable).append("\" "); if (values != null && values.size() > 0) { attachBuf.append("wajax=\"") .append(RichTagUtil.buildWajaxAttributeString(this.getClass().getName(), values)).append("\" "); } attachBuf.append(">"); attachBuf.append("<table class=\"macroAttachment\">"); //TODO: i18n, header attachBuf.append( "<tr><th>File</th><th>Author</th><th>Size</th><th>Date</th><th>Owner page</th><th>Comment</th></tr>"); int sum = urls.size(); if (sum > 0) { for (int idx = 0; idx < sum; idx++) { FileNode node = files.get(idx); attachBuf.append("<tr>"); //filename attachBuf.append("<td class='column1'><a href=\""); attachBuf.append(urls.get(idx)); attachBuf.append("\" title=\"Download file\">"); attachBuf.append(node.getFilename()); attachBuf.append("</a></td>"); //author attachBuf.append("<td class='column2'>").append(StringEscapeUtils.escapeHtml(node.getCreateor())) .append("</td>"); //size attachBuf.append("<td class='column3'>").append(GwtUtils.convertHumanSize(node.getSize())) .append("</td>"); //date attachBuf.append("<td class='column4'>").append( DateUtil.toDisplayDate(WikiUtil.getUser(), new Date(node.getDate()), messageService)) .append("</td>"); //owner page attachBuf.append("<td class='column6'>"); String pageTitle = getPageTitle(node.getIdentifier()); if (pageTitle != null) { attachBuf.append("<a href=\"") .append(WikiUtil.getPageRelativeTokenURL(spaceUname, pageTitle, null)).append("\">") .append(pageTitle).append("</a>"); } else { attachBuf.append("Unknown"); } attachBuf.append("</td>"); //comment attachBuf.append("<td>").append(StringEscapeUtils.escapeHtml(node.getComment())).append("</td>"); attachBuf.append("</tr>"); } } else { //TODO: i18n attachBuf.append("<tr><td colspan='6'>").append("No matched files").append("</td></tr>"); } attachBuf.append("</table></div>"); pieces.add(new TextModel(attachBuf.toString())); return pieces; } /** * @param identifier * @return */ private String getPageTitle(String pageUuid) { if (pageTree != null) { for (Page page : pageTree) { if (StringUtils.equals(page.getPageUuid(), pageUuid)) { return page.getTitle(); } } } return null; } /** * @param string * @return */ private List<FileNode> getFileList(String filterStr, String[] visibles) { List<String> filter = new ArrayList<String>(); if (!StringUtils.isEmpty(filterStr)) { String[] fs = filterStr.split(","); for (String str : fs) { if (!StringUtils.isEmpty(str)) filter.add(str.trim()); } } List<FileNode> matched = new ArrayList<FileNode>(); for (FileNode node : atts) { //as visible list only contain current page's attachment, so skip this step if (visibles != null && visibles.length > 0) { if (node.getStatus() > 0 && StringUtil.equalsIgnoreCase(node.getIdentifier(), pageUuid) && !StringUtil.containsIgnoreCase(visibles, node.getNodeUuid())) continue; } else { //normal render, for example, page view. Then only view non-draft if (node.getStatus() > 0) continue; } String name = node.getFilename(); if (filter.size() > 0) { for (String flt : filter) { if (FilenameUtils.wildcardMatch(name.toLowerCase(), flt.toLowerCase())) { matched.add(node); break; } } } else { //no filter, then put all attachments matched.add(node); } } return matched; } public void renderEnd() { } public void renderStart(AbstractPage page) { if (page != null && page.getSpace() != null) { String spaceUname = page.getSpace().getUnixName(); pageTree = pageService.getPageTree(spaceUname); pageUuid = page.getPageUuid(); try { //overkilled? - it even get current page draft status attachments and display on repo list? atts = spaceService.getAttachments(spaceUname, false, true, WikiUtil.getUser(userReadingService)); } catch (RepositoryException e) { log.error("render atttachment failed to get file attachment list"); //create a empty att, then all image will display error message atts = new ArrayList<FileNode>(); } this.spaceUname = spaceUname; } } public void init(ApplicationContext context) { spaceService = (SpaceService) context.getBean(SpaceService.SERVICE_NAME); pageService = (PageService) context.getBean(PageService.SERVICE_NAME); messageService = (MessageService) context.getBean(MessageService.SERVICE_NAME); userReadingService = (UserReadingService) context.getBean(UserReadingService.SERVICE_NAME); } }