Java tutorial
/** * This file is part of mycollab-web. * * mycollab-web is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * mycollab-web 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 mycollab-web. If not, see <http://www.gnu.org/licenses/>. */ package com.esofthead.mycollab.module.file.view.components; import java.util.ArrayList; import java.util.List; import com.esofthead.mycollab.core.MyCollabException; import com.esofthead.mycollab.core.utils.StringUtils; import com.esofthead.mycollab.module.ecm.StorageNames; import com.esofthead.mycollab.module.ecm.domain.ExternalFolder; import com.esofthead.mycollab.module.ecm.domain.Folder; import com.esofthead.mycollab.module.file.domain.criteria.FileSearchCriteria; import com.esofthead.mycollab.vaadin.events.HasSearchHandlers; import com.esofthead.mycollab.vaadin.events.SearchHandler; import com.esofthead.mycollab.vaadin.mvp.CacheableComponent; import com.esofthead.mycollab.vaadin.mvp.ViewComponent; import com.esofthead.mycollab.vaadin.ui.CommonUIFactory; import com.lexaden.breadcrumb.Breadcrumb; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; /** * * @author MyCollab Ltd. * @since 1.0 * */ @ViewComponent public class FileBreadcrumb extends Breadcrumb implements CacheableComponent, HasSearchHandlers<FileSearchCriteria> { private static final long serialVersionUID = 1L; private List<SearchHandler<FileSearchCriteria>> handers; private String rootFolderPath; public FileBreadcrumb(String rootFolderPath) { if (org.apache.commons.lang3.StringUtils.isEmpty(rootFolderPath)) { throw new MyCollabException("Root folder path can not be empty"); } this.rootFolderPath = rootFolderPath; this.setShowAnimationSpeed(Breadcrumb.AnimSpeed.SLOW); this.setHideAnimationSpeed(Breadcrumb.AnimSpeed.SLOW); this.setUseDefaultClickBehaviour(false); } void initBreadcrumb() { // home Btn ---------------- this.addLink(new Button(null, new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { FileSearchCriteria criteria = new FileSearchCriteria(); criteria.setBaseFolder(rootFolderPath); criteria.setRootFolder(rootFolderPath); notifySearchHandler(criteria); } })); this.setHeight(25, Unit.PIXELS); this.select(0); Button documentBtnLink = generateBreadcrumbLink("My Documents", new ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { FileSearchCriteria criteria = new FileSearchCriteria(); criteria.setBaseFolder(rootFolderPath); criteria.setRootFolder(rootFolderPath); notifySearchHandler(criteria); } }); documentBtnLink.addStyleName("link"); this.addLink(documentBtnLink); this.setLinkEnabled(true, 1); } void gotoFolder(final Folder folder) { initBreadcrumb(); if (folder instanceof ExternalFolder) { displayExternalFolder((ExternalFolder) folder); } else { displayMyCollabFolder(folder); } } private void displayMyCollabFolder(final Folder folder) { String folderPath = folder.getPath(); if (!folderPath.startsWith(rootFolderPath)) { throw new MyCollabException("Invalid path " + rootFolderPath + "---" + folderPath); } String remainPath = folderPath.substring(rootFolderPath.length()); if (remainPath.startsWith("/")) { remainPath = remainPath.substring(1); } StringBuffer curPath = new StringBuffer(""); String[] path = remainPath.split("/"); for (int i = 0; i < path.length; i++) { String pathName = path[i]; curPath.append(pathName); final Button btn = new Button(); btn.setCaption(StringUtils.trim(pathName, 25, true)); btn.setDescription(pathName); final String currentResourcePath = curPath.toString(); btn.addClickListener(new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { FileSearchCriteria criteria = new FileSearchCriteria(); criteria.setBaseFolder(rootFolderPath + "/" + currentResourcePath); criteria.setRootFolder(rootFolderPath); notifySearchHandler(criteria); } }); this.select(i + 1); this.addLink(btn); this.setLinkEnabled(true, i + 1); if (i < path.length - 1) { curPath.append("/"); } } } private void displayExternalFolder(final ExternalFolder folder) { String folderPath = folder.getPath(); final StringBuffer curPath = new StringBuffer(""); String[] path = folderPath.split("/"); if (path.length == 0) { final Button btn = new Button(); btn.setCaption(StringUtils.trim(folder.getExternalDrive().getFoldername(), 25, true)); this.addLink(btn); this.select(2); return; } for (int i = 0; i < path.length; i++) { String pathName = path[i]; if (i == 0) { pathName = folder.getExternalDrive().getFoldername(); curPath.append("/"); } else { curPath.append(pathName); } final Button btn = new Button(); btn.setCaption(StringUtils.trim(pathName, 25, true)); btn.setDescription(pathName); final String currentFolderPath = curPath.toString(); btn.addClickListener(new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { FileSearchCriteria criteria = new FileSearchCriteria(); criteria.setBaseFolder(currentFolderPath); criteria.setRootFolder("/"); criteria.setStorageName(StorageNames.DROPBOX); criteria.setExternalDrive(folder.getExternalDrive()); notifySearchHandler(criteria); } }); this.select(i + 1); this.addLink(btn); this.setLinkEnabled(true, i + 1); if (i < path.length - 1) { curPath.append("/"); } } } private static Button generateBreadcrumbLink(String linkname, Button.ClickListener listener) { return CommonUIFactory.createButtonTooltip(StringUtils.trim(linkname, 25, true), linkname, listener); } @Override public void addSearchHandler(final SearchHandler<FileSearchCriteria> handler) { if (this.handers == null) { this.handers = new ArrayList<SearchHandler<FileSearchCriteria>>(); } this.handers.add(handler); } private void notifySearchHandler(final FileSearchCriteria criteria) { if (this.handers != null) { for (final SearchHandler<FileSearchCriteria> handler : this.handers) { handler.onSearch(criteria); } } } }