| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xerces" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, International |
| * Business Machines, Inc., http://www.apache.org. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package ui; |
| |
| import java.io.Serializable; |
| import javax.swing.JTree; |
| import javax.swing.event.TreeModelEvent; |
| import javax.swing.event.TreeModelListener; |
| import javax.swing.tree.DefaultTreeModel; |
| import javax.swing.tree.DefaultMutableTreeNode; |
| import javax.swing.tree.MutableTreeNode; |
| import javax.swing.tree.TreeNode; |
| |
| import org.w3c.dom.Document; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| import java.util.Hashtable; |
| |
| /** |
| * Displays a DOM document in a tree control. |
| * |
| * @author Andy Clark, IBM |
| * @version |
| */ |
| public class DOMTree |
| extends JTree |
| { |
| |
| // |
| // Constructors |
| // |
| |
| /** Default constructor. */ |
| public DOMTree() { |
| this(null); |
| } |
| |
| /** Constructs a tree with the specified document. */ |
| public DOMTree(Document document) { |
| super(new Model()); |
| |
| // set tree properties |
| setRootVisible(false); |
| |
| // set properties |
| setDocument(document); |
| |
| } // <init>() |
| |
| // |
| // Public methods |
| // |
| |
| /** Sets the document. */ |
| public void setDocument(Document document) { |
| ((Model)getModel()).setDocument(document); |
| expandRow(0); |
| } |
| |
| /** Returns the document. */ |
| public Document getDocument() { |
| return ((Model)getModel()).getDocument(); |
| } |
| |
| /** get the org.w3c.Node for a MutableTreeNode. */ |
| public Node getNode(Object treeNode) { |
| return ((Model)getModel()).getNode(treeNode); |
| } |
| |
| // |
| // Classes |
| // |
| |
| /** |
| * DOM tree model. |
| * |
| * @author Andy Clark, IBM |
| * @version |
| */ |
| static class Model |
| extends DefaultTreeModel |
| implements Serializable |
| { |
| |
| // |
| // Data |
| // |
| |
| /** Document. */ |
| private Document document; |
| /** Node Map. */ |
| private Hashtable nodeMap = new Hashtable(); |
| |
| |
| // |
| // Constructors |
| // |
| |
| /** Default constructor. */ |
| public Model() { |
| this(null); |
| } |
| |
| /** Constructs a model from the specified document. */ |
| public Model(Document document) { |
| super(new DefaultMutableTreeNode()); |
| setDocument(document); |
| } |
| |
| // |
| // Public methods |
| // |
| |
| /** Sets the document. */ |
| public synchronized void setDocument(Document document) { |
| |
| // save document |
| this.document = document; |
| |
| // clear tree and re-populate |
| ((DefaultMutableTreeNode)getRoot()).removeAllChildren(); |
| nodeMap.clear(); |
| buildTree(); |
| fireTreeStructureChanged(this, new Object[] { getRoot() }, new int[0], new Object[0]); |
| |
| } // setDocument(Document) |
| |
| /** Returns the document. */ |
| public Document getDocument() { |
| return document; |
| } |
| |
| /** get the org.w3c.Node for a MutableTreeNode. */ |
| public Node getNode(Object treeNode) { |
| return (Node)nodeMap.get(treeNode); |
| } |
| |
| // |
| // Private methods |
| // |
| |
| /** Builds the tree. */ |
| private void buildTree() { |
| |
| // is there anything to do? |
| if (document == null) { return; } |
| |
| // iterate over children of this node |
| NodeList nodes = document.getChildNodes(); |
| int len = (nodes != null) ? nodes.getLength() : 0; |
| MutableTreeNode root = (MutableTreeNode)getRoot(); |
| for (int i = 0; i < len; i++) { |
| Node node = nodes.item(i); |
| switch (node.getNodeType()) { |
| case Node.DOCUMENT_NODE: { |
| root = insertDocumentNode(node, root); |
| break; |
| } |
| |
| case Node.ELEMENT_NODE: { |
| insertElementNode(node, root); |
| break; |
| } |
| |
| default: // ignore |
| |
| } // switch |
| |
| } // for |
| |
| } // buildTree() |
| |
| /** Inserts a node and returns a reference to the new node. */ |
| private MutableTreeNode insertNode(String what, MutableTreeNode where) { |
| |
| MutableTreeNode node = new DefaultMutableTreeNode(what); |
| insertNodeInto(node, where, where.getChildCount()); |
| return node; |
| |
| } // insertNode(Node,MutableTreeNode):MutableTreeNode |
| |
| /** Inserts the document node. */ |
| private MutableTreeNode insertDocumentNode(Node what, MutableTreeNode where) { |
| MutableTreeNode treeNode = insertNode("<"+what.getNodeName()+'>', where); |
| nodeMap.put(treeNode, what); |
| return treeNode; |
| } |
| |
| /** Inserts an element node. */ |
| private MutableTreeNode insertElementNode(Node what, MutableTreeNode where) { |
| |
| // build up name |
| StringBuffer name = new StringBuffer(); |
| name.append('<'); |
| name.append(what.getNodeName()); |
| NamedNodeMap attrs = what.getAttributes(); |
| int attrCount = (attrs != null) ? attrs.getLength() : 0; |
| for (int i = 0; i < attrCount; i++) { |
| Node attr = attrs.item(i); |
| name.append(' '); |
| name.append(attr.getNodeName()); |
| name.append("=\""); |
| name.append(attr.getNodeValue()); |
| name.append('"'); |
| } |
| name.append('>'); |
| |
| // insert element node |
| |
| MutableTreeNode element = insertNode(name.toString(), where); |
| nodeMap.put(element, what); |
| |
| // gather up attributes and children nodes |
| NodeList children = what.getChildNodes(); |
| int len = (children != null) ? children.getLength() : 0; |
| for (int i = 0; i < len; i++) { |
| Node node = children.item(i); |
| switch (node.getNodeType()) { |
| case Node.CDATA_SECTION_NODE: { |
| insertCDataSectionNode( node, element ); //Add a Section Node |
| break; |
| } |
| case Node.TEXT_NODE: { |
| insertTextNode(node, element); |
| break; |
| } |
| case Node.ELEMENT_NODE: { |
| insertElementNode(node, element); |
| break; |
| } |
| } |
| } |
| |
| return element; |
| |
| } // insertElementNode(Node,MutableTreeNode):MutableTreeNode |
| |
| /** Inserts a text node. */ |
| private MutableTreeNode insertTextNode(Node what, MutableTreeNode where) { |
| String value = what.getNodeValue().trim(); |
| if (value.length() > 0) { |
| MutableTreeNode treeNode = insertNode(value, where); |
| nodeMap.put(treeNode, what); |
| return treeNode; |
| } |
| return null; |
| } |
| |
| |
| /** Inserts a CData Section Node. */ |
| private MutableTreeNode insertCDataSectionNode(Node what, MutableTreeNode where) { |
| StringBuffer CSectionBfr = new StringBuffer(); |
| //--- optional --- CSectionBfr.append( "<![CDATA[" ); |
| CSectionBfr.append( what.getNodeValue() ); |
| //--- optional --- CSectionBfr.append( "]]>" ); |
| if (CSectionBfr.length() > 0) { |
| MutableTreeNode treeNode = insertNode(CSectionBfr.toString(), where); |
| nodeMap.put(treeNode, what); |
| return treeNode; |
| } |
| return null; |
| } |
| |
| |
| } // class Model |
| |
| |
| |
| } // class DOMTree |
