graphbean.java

一个比较好的jsf spring hibernate的例子

/*
 * $Id: GraphBean.java,v 1.7 2007/04/27 22:00:25 ofung Exp $
 */

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
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 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package demo.model;

import javax.faces.event.ActionEvent;

import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.javaee.blueprints.components.ui.components.GraphComponent;
import com.sun.javaee.blueprints.components.ui.model.Graph;
import com.sun.javaee.blueprints.components.ui.model.Node;

/** <p>Backing file bean for TreeControl demo.</p> */

public class GraphBean {

    private static Logger LOGGER = Logger.getLogger("demo.model");    
    
    Graph menuGraph = null;
    Graph treeGraph = null;


    public GraphBean() {
    }


    public Graph getMenuGraph() {
        // Construct a preconfigured customer list lazily.
        if (menuGraph == null) {
            Node root = new Node("Menu 2", "Menu", null, null, false, true);
            menuGraph = new Graph(root);

            Node file = new Node("File", "File 2", "/demo-test.faces", null,
                                 true, true);
            root.addChild(file);
            file.addChild(
                  new Node("File-New", "New 2", "/demo-test.faces", null, true,
                           false));
            file.addChild(
                  new Node("File-Open",
                           "Open 2",
                           "/demo-test.faces",
                           null,
                           true,
                           false));
            Node close = new Node("File-Close", "Close 2", "/demo-test.faces",
                                  null, false, false);
            file.addChild(close);
            file.addChild(
                  new Node("File-Exit",
                           "Exit 2",
                           "/demo-test.faces",
                           null,
                           true,
                           false));

            Node edit = new Node("Edit", "Edit 2", "/demo-test.faces", null,
                                 true, false);
            root.addChild(edit);
            edit.addChild(
                  new Node("Edit-Cut", "Cut 2", "/demo-test.faces", null, true,
                           false));
            edit.addChild(
                  new Node("Edit-Copy",
                           "Copy 2",
                           "/demo-test.faces",
                           null,
                           true,
                           false));
            edit.addChild(
                  new Node("Edit-Paste", "Paste 2", "/demo-test.faces", null,
                           false, false));

            menuGraph.setSelected(close);
        }
        return menuGraph;
    }


    public void setMenuGraph(Graph newMenuGraph) {
        this.menuGraph = newMenuGraph;
    }


    public Graph getTreeGraph() {
        // Construct a preconfigured Graph lazily.
        if (treeGraph == null) {
            Node root = new Node("Menu 4", "Menu 4", null, null, false, true);
            treeGraph = new Graph(root);

            Node file = new Node("File", "File 4", "/demo-test.faces", null,
                                 true, true);
            root.addChild(file);
            file.addChild(
                  new Node("File-New", "New 4", "/demo-test.faces", null, true,
                           false));
            file.addChild(
                  new Node("File-Open",
                           "Open 4",
                           "/demo-test.faces",
                           null,
                           true,
                           false));
            Node close = new Node("File-Close", "Close 4", "/demo-test.faces",
                                  null, false, false);
            file.addChild(close);
            file.addChild(
                  new Node("File-Exit",
                           "Exit 4",
                           "/demo-test.faces",
                           null,
                           true,
                           false));

            Node edit = new Node("Edit", "Edit 4", "/demo-test.faces", null,
                                 true, false);
            root.addChild(edit);
            edit.addChild(
                  new Node("Edit-Cut", "Cut 4", "/demo-test.faces", null, true,
                           false));
            edit.addChild(
                  new Node("Edit-Copy",
                           "Copy 4",
                           "/demo-test.faces",
                           null,
                           true,
                           false));
            edit.addChild(
                  new Node("Edit-Paste", "Paste 4", "/demo-test.faces", null,
                           false, false));

            treeGraph.setSelected(close);
        }
        return treeGraph;
    }


    public void setTreeGraph(Graph newTreeGraph) {
        this.treeGraph = newTreeGraph;
    }


    /*
     * Processes the event queued on the graph component when a particular
     * node in the tree control is to be expanded or collapsed.
     */
    public void processGraphEvent(ActionEvent event) {
        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("TRACE: GraphBean.processGraphEvent ");
        }
        Graph graph = null;
        GraphComponent component = (GraphComponent) event.getSource();
        String path = (String) component.getAttributes().get("path");

        // Acquire the root node of the graph representing the menu
        graph = (Graph) component.getValue();
        if (graph == null) {
            if (LOGGER.isLoggable(Level.SEVERE)) {
                LOGGER.severe("ERROR: Graph could not located in scope ");
            }
        }
        // Toggle the expanded state of this node
        Node node = graph.findNode(path);
        if (node == null) {
            if (LOGGER.isLoggable(Level.SEVERE)) {
                LOGGER.severe("ERROR: Node " + path + "could not be located. ");
            }
            return;
        }
        boolean current = node.isExpanded();
        node.setExpanded(!current);
        if (!current) {
            Node parent = node.getParent();
            if (parent != null) {
                Iterator kids = parent.getChildren();
                while (kids.hasNext()) {
                    Node kid = (Node) kids.next();
                    if (kid != node) {
                        kid.setExpanded(false);
                    }
                }
            }
        }
    }

}