Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.ui.apps; import java.util.Locale; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Panel; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.ValoTheme; /** * Widget used to displays a nested hierarchy of app categories and apps.<p> */ public class CmsAppHierarchyPanel extends VerticalLayout { /** Serial version id.*/ private static final long serialVersionUID = 1L; /** The panel to display the apps at this tree level. */ private HorizontalLayout m_appPanel; /** The object used to generate the buttons for the apps. */ private I_CmsAppButtonProvider m_appButtonProvider; /** * Creates a new instance.<p> * * @param buttonProvider the object to which we delegate the creation of app buttons */ public CmsAppHierarchyPanel(I_CmsAppButtonProvider buttonProvider) { m_appPanel = new HorizontalLayout(); m_appPanel.addStyleName(ValoTheme.LAYOUT_HORIZONTAL_WRAPPING); addComponent(m_appPanel); setMargin(true); setSpacing(true); m_appButtonProvider = buttonProvider; } /** * Adds a child category panel.<p> * * @param label the label * @param child the child widget */ public void addChild(String label, CmsAppHierarchyPanel child) { Panel panel = new Panel(); panel.setCaption(label); panel.setContent(child); addComponent(panel); } /** * Displays the given tree of categories and apps in the tree.<p> * * @param rootNode the rootNode to render in this panel * @param locale the locale to use */ public void fill(CmsAppCategoryNode rootNode, Locale locale) { for (I_CmsWorkplaceAppConfiguration appConfig : rootNode.getAppConfigurations()) { m_appPanel.addComponent(m_appButtonProvider.createAppButton(appConfig)); } for (CmsAppCategoryNode childNode : rootNode.getChildren()) { CmsAppHierarchyPanel childPanel = new CmsAppHierarchyPanel(m_appButtonProvider); addChild(childNode.getCategory().getName(locale), childPanel); childPanel.fill(childNode, locale); } } }