Java tutorial
/** * Copyright (C) 2012 JBoss Inc * * 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 org.jboss.dashboard.ui.config; import org.jboss.dashboard.ui.components.HandlerFactoryElement; import org.jboss.dashboard.ui.controller.CommandRequest; import org.jboss.dashboard.ui.controller.CommandResponse; import org.jboss.dashboard.ui.controller.responses.DoNothingResponse; import org.jboss.dashboard.ui.controller.responses.ShowCurrentScreenResponse; import javax.servlet.RequestDispatcher; import java.io.IOException; public class TreeActionsHandler extends HandlerFactoryElement { private static transient org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory .getLog(TreeActionsHandler.class.getName()); private TreeStatus treeStatus; private Tree tree; public TreeStatus getTreeStatus() { return treeStatus; } public void setTreeStatus(TreeStatus treeStatus) { this.treeStatus = treeStatus; } public Tree getTree() { return tree; } public void setTree(Tree tree) { this.tree = tree; } public CommandResponse actionNavigateTo(CommandRequest request) { String path = request.getParameter("path"); TreeNode node = tree.getNodeByPath(path); if (node == null) { log.error("Node with path " + path + " does not exist."); return new ShowCurrentScreenResponse(); } treeStatus.edit(node); return new ShowCurrentScreenResponse(); } public CommandResponse actionExpandOrCollapse(CommandRequest request) { String path = request.getParameter("path"); TreeNode node = tree.getNodeByPath(path); if (node == null) { log.error("Node with path " + path + " does not exist."); return new ShowCurrentScreenResponse(); } if (treeStatus.isExpanded(node)) { treeStatus.collapse(node); } else { treeStatus.expand(node); } return new ShowCurrentScreenResponse(); } public CommandResponse actionShowEditPage(CommandRequest request) { TreeNode treeNode = treeStatus.getLastEditedNode(getTree()); String editPage = treeNode.getEditURI(); RequestDispatcher rd = request.getRequestObject().getRequestDispatcher(editPage); try { rd.include(request.getRequestObject(), request.getResponseObject()); } catch (Exception e) { log.error("Error including page: " + editPage, e); try { request.getResponseObject().sendError(500); } catch (IOException e1) { log.error("Error:", e1); } } return new DoNothingResponse(); } public CommandResponse actionShowTreePage(CommandRequest request) { RequestDispatcher rd = request.getRequestObject().getRequestDispatcher("/configuration/tree/tree.jsp"); try { rd.include(request.getRequestObject(), request.getResponseObject()); } catch (Exception e) { log.error("Error:", e); try { request.getResponseObject().sendError(500); } catch (IOException e1) { log.error("Error:", e1); } } return new DoNothingResponse(); } }