Java tutorial
/* * Copyright 2012 gitblit.com. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.gitblit.wicket.pages; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; import java.text.MessageFormat; import java.util.ArrayList; import java.util.List; import org.apache.wicket.Component; import org.apache.wicket.PageParameters; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.repeater.Item; import org.apache.wicket.markup.repeater.data.DataView; import org.apache.wicket.markup.repeater.data.ListDataProvider; import org.apache.wicket.resource.ContextRelativeResource; import org.apache.wicket.util.resource.ResourceStreamNotFoundException; import org.eclipse.jgit.lib.Constants; import com.gitblit.GitBlit; import com.gitblit.Keys; import com.gitblit.models.ProjectModel; import com.gitblit.models.UserModel; import com.gitblit.utils.MarkdownUtils; import com.gitblit.utils.StringUtils; import com.gitblit.wicket.GitBlitWebSession; import com.gitblit.wicket.PageRegistration; import com.gitblit.wicket.PageRegistration.DropDownMenuItem; import com.gitblit.wicket.PageRegistration.DropDownMenuRegistration; import com.gitblit.wicket.WicketUtils; import com.gitblit.wicket.panels.LinkPanel; public class ProjectsPage extends RootPage { List<ProjectModel> projectModels = new ArrayList<ProjectModel>(); public ProjectsPage() { super(); setup(null); } public ProjectsPage(PageParameters params) { super(params); setup(params); } @Override protected boolean reusePageParameters() { return true; } @Override protected List<ProjectModel> getProjectModels() { final UserModel user = GitBlitWebSession.get().getUser(); List<ProjectModel> projects = GitBlit.self().getProjectModels(user, false); return projects; } private void setup(PageParameters params) { setupPage("", ""); // check to see if we should display a login message boolean authenticateView = GitBlit.getBoolean(Keys.web.authenticateViewPages, true); if (authenticateView && !GitBlitWebSession.get().isLoggedIn()) { String messageSource = GitBlit.getString(Keys.web.loginMessage, "gitblit"); String message = readMarkdown(messageSource, "login.mkd"); Component repositoriesMessage = new Label("projectsMessage", message); add(repositoriesMessage.setEscapeModelStrings(false)); add(new Label("projectsPanel")); return; } // Load the markdown welcome message String messageSource = GitBlit.getString(Keys.web.repositoriesMessage, "gitblit"); String message = readMarkdown(messageSource, "welcome.mkd"); Component projectsMessage = new Label("projectsMessage", message).setEscapeModelStrings(false) .setVisible(message.length() > 0); add(projectsMessage); List<ProjectModel> projects = getProjects(params); ListDataProvider<ProjectModel> dp = new ListDataProvider<ProjectModel>(projects); DataView<ProjectModel> dataView = new DataView<ProjectModel>("project", dp) { private static final long serialVersionUID = 1L; int counter; @Override protected void onBeforeRender() { super.onBeforeRender(); counter = 0; } public void populateItem(final Item<ProjectModel> item) { final ProjectModel entry = item.getModelObject(); PageParameters pp = WicketUtils.newProjectParameter(entry.name); item.add(new LinkPanel("projectTitle", "list", entry.getDisplayName(), ProjectPage.class, pp)); item.add(new LinkPanel("projectDescription", "list", entry.description, ProjectPage.class, pp)); item.add(new Label("repositoryCount", entry.repositories.size() + " " + (entry.repositories.size() == 1 ? getString("gb.repository") : getString("gb.repositories")))); String lastChange; if (entry.lastChange.getTime() == 0) { lastChange = "--"; } else { lastChange = getTimeUtils().timeAgo(entry.lastChange); } Label lastChangeLabel = new Label("projectLastChange", lastChange); item.add(lastChangeLabel); WicketUtils.setCssClass(lastChangeLabel, getTimeUtils().timeAgoCss(entry.lastChange)); WicketUtils.setAlternatingBackground(item, counter); counter++; } }; add(dataView); // push the panel down if we are hiding the admin controls and the // welcome message if (!showAdmin && !projectsMessage.isVisible()) { WicketUtils.setCssStyle(dataView, "padding-top:5px;"); } } @Override protected void addDropDownMenus(List<PageRegistration> pages) { PageParameters params = getPageParameters(); pages.add(0, new PageRegistration("gb.projects", ProjectsPage.class, params)); DropDownMenuRegistration menu = new DropDownMenuRegistration("gb.filters", ProjectsPage.class); // preserve time filter option on repository choices menu.menuItems.addAll(getRepositoryFilterItems(params)); // preserve repository filter option on time choices menu.menuItems.addAll(getTimeFilterItems(params)); if (menu.menuItems.size() > 0) { // Reset Filter menu.menuItems.add(new DropDownMenuItem(getString("gb.reset"), null, null)); } pages.add(menu); } private String readMarkdown(String messageSource, String resource) { String message = ""; if (messageSource.equalsIgnoreCase("gitblit")) { // Read default message message = readDefaultMarkdown(resource); } else { // Read user-supplied message if (!StringUtils.isEmpty(messageSource)) { File file = new File(messageSource); if (file.exists()) { try { FileInputStream fis = new FileInputStream(file); InputStreamReader reader = new InputStreamReader(fis, Constants.CHARACTER_ENCODING); message = MarkdownUtils.transformMarkdown(reader); reader.close(); } catch (Throwable t) { message = getString("gb.failedToRead") + " " + file; warn(message, t); } } else { message = messageSource + " " + getString("gb.isNotValidFile"); } } } return message; } private String readDefaultMarkdown(String file) { String content = readDefaultMarkdown(file, getLanguageCode()); if (StringUtils.isEmpty(content)) { content = readDefaultMarkdown(file, null); } return content; } private String readDefaultMarkdown(String file, String lc) { if (!StringUtils.isEmpty(lc)) { // convert to file_lc.mkd file = file.substring(0, file.lastIndexOf('.')) + "_" + lc + file.substring(file.lastIndexOf('.')); } String message; try { ContextRelativeResource res = WicketUtils.getResource(file); InputStream is = res.getResourceStream().getInputStream(); InputStreamReader reader = new InputStreamReader(is, Constants.CHARACTER_ENCODING); message = MarkdownUtils.transformMarkdown(reader); reader.close(); } catch (ResourceStreamNotFoundException t) { if (lc == null) { // could not find default language resource message = MessageFormat.format(getString("gb.failedToReadMessage"), file); error(message, t, false); } else { // ignore so we can try default language resource message = null; } } catch (Throwable t) { message = MessageFormat.format(getString("gb.failedToReadMessage"), file); error(message, t, false); } return message; } }