Application: gvSIG desktop

/*

 * Created on 13-sep-2004

 *

 * To change the template for this generated file go to

 * Window>Preferences>Java>Code Generation>Code and Comments

 */

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program 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 2

 * of the License, or (at your option) any later version.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.utiles.xmlViewer;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Stack;

import javax.swing.JPanel;

import javax.swing.table.DefaultTableModel;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.DefaultTreeModel;

import org.xml.sax.Attributes;

import org.xml.sax.ContentHandler;

import org.xml.sax.Locator;

import org.xml.sax.SAXException;

/**

 * Control que visualiza los contenidos de un XML jerarquicamente en un arbol,

 * los attributos de cada nodo en una tabla y el texto contenido entre los

 * tags en un area de texto

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class XMLViewer extends JPanel {

    private javax.swing.JScrollPane jScrollPane = null;

    private javax.swing.JTree xmlTree = null;

    private javax.swing.JScrollPane jScrollPane1 = null;

    private javax.swing.JTable attributeTable = null;

    private javax.swing.JSplitPane jSplitPane = null;

    private javax.swing.JScrollPane jScrollPane2 = null;

    private javax.swing.JTextArea txtContent = null;

    private javax.swing.JSplitPane jSplitPane1 = null;

    private DefaultTreeModel treeModel = null;

    private XMLContent content;

    private javax.swing.JPanel jPanel = null;

    private javax.swing.JPanel jPanel1 = null;

    private String[] namesColumn;

    /**

     * This is the default constructor

     */

    public XMLViewer() {

        super();

        initialize();

    }

    /**

     * Establece el origen XML del control

     *

     * @param content Objeto que lanzar? los eventos del XML a representar

     *

     * @throws SAXException Si se produce alg?n error en el parseado del

     *         contenido

     */

    public void setModel(XMLContent content) throws SAXException {

        this.content = content;

        parse();

    }

    /**

     * Parsea el modelo rellenando los controles con la informaci?n

     *

     * @throws SAXException Si se produce un error de SAX parseando el

     *         XMLContent

     */

    private void parse() throws SAXException {

        MyContentHandler contentHandler = new MyContentHandler();

        content.setContentHandler(contentHandler);

        content.parse();

        treeModel = new DefaultTreeModel(contentHandler.getRoot());

        xmlTree.setModel(treeModel);

        xmlTree.clearSelection();

                // getJSplitPane().setDividerLocation(1.0); // Por defecto

    }

    /**

     * This method initializes this

     */

    private void initialize() {

        this.setLayout(new java.awt.BorderLayout());

        this.add(getJSplitPane1(), java.awt.BorderLayout.CENTER);

        this.setSize(579, 379);

    }

    /**

     * This method initializes jScrollPane

     *

     * @return javax.swing.JScrollPane

     */

    private javax.swing.JScrollPane getJScrollPane() {

        if (jScrollPane == null) {

            jScrollPane = new javax.swing.JScrollPane();

            jScrollPane.setViewportView(getJPanel());

        }

        return jScrollPane;

    }

    /**

     * This method initializes xmlTree

     *

     * @return javax.swing.JTree

     */

    public javax.swing.JTree getXmlTree() {

        if (xmlTree == null) {

            xmlTree = new javax.swing.JTree();

            xmlTree.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {

                                        public void valueChanged(

                        javax.swing.event.TreeSelectionEvent e) {

                        DefaultTableModel tableModel = new DefaultTableModel();

                        for (int i=0;i<namesColumn.length;i++){

                                tableModel.addColumn(namesColumn[i]);

                        }

                        Node selected = (Node) e.getPath().getLastPathComponent();

                        xmlTree.expandPath(e.getPath());

                        HashMap map = selected.attributes;

                        boolean hasAtts = false;

                        Iterator i = map.keySet().iterator();

                        while (i.hasNext()) {

                            hasAtts = true;

                            Object key = i.next();

                            tableModel.addRow(new Object[] { key, map.get(key) });

                        }

                        attributeTable.setModel(tableModel);

                        attributeTable.getTableHeader().setVisible(true);

                        if (selected.content == null) {

                            getJSplitPane().setDividerLocation(1.0);

                        } else {

                            getJSplitPane().setDividerLocation(0.0);

                        }

                               txtContent.setText(selected.content);

                    }

                });

        }

        xmlTree.setShowsRootHandles(true);

        xmlTree.setExpandsSelectedPaths(true);        

        // xmlTree.setToggleClickCount(1);

        return xmlTree;

    }

    /**

     * This method initializes attributeTable

     *

     * @return javax.swing.JTable

     */

    private javax.swing.JTable getAttributeTable() {

        if (attributeTable == null) {

            attributeTable = new javax.swing.JTable();

            attributeTable.getTableHeader().setVisible(true);

        }

        return attributeTable;

    }

    /**

     * This method initializes jScrollPane1

     *

     * @return javax.swing.JScrollPane

     */

    private javax.swing.JScrollPane getJScrollPane1() {

        if (jScrollPane1 == null) {

            jScrollPane1 = new javax.swing.JScrollPane();

            jScrollPane1.setViewportView(getAttributeTable());

        }

        return jScrollPane1;

    }

    /**

     * This method initializes jSplitPane

     *

     * @return javax.swing.JSplitPane

     */

    private javax.swing.JSplitPane getJSplitPane() {

        if (jSplitPane == null) {

            jSplitPane = new javax.swing.JSplitPane();

            jSplitPane.setTopComponent(getJScrollPane1());

            jSplitPane.setBottomComponent(getJScrollPane2());

            jSplitPane.setOrientation(javax.swing.JSplitPane.VERTICAL_SPLIT);

            jSplitPane.setDividerLocation(100);

            jSplitPane.setDividerSize(5);

        }

        return jSplitPane;

    }

    /**

     * This method initializes jScrollPane2

     *

     * @return javax.swing.JScrollPane

     */

    private javax.swing.JScrollPane getJScrollPane2() {

        if (jScrollPane2 == null) {

            jScrollPane2 = new javax.swing.JScrollPane();

            jScrollPane2.setViewportView(getTxtContent());

        }

        return jScrollPane2;

    }

    /**

     * This method initializes txtContent

     *

     * @return javax.swing.JTextArea

     */

    private javax.swing.JTextArea getTxtContent() {

        if (txtContent == null) {

            txtContent = new javax.swing.JTextArea();

        }

        return txtContent;

    }

    /**

     * This method initializes jSplitPane1

     *

     * @return javax.swing.JSplitPane

     */

    private javax.swing.JSplitPane getJSplitPane1() {

        if (jSplitPane1 == null) {

            jSplitPane1 = new javax.swing.JSplitPane();

            jSplitPane1.setLeftComponent(getJScrollPane());

            jSplitPane1.setRightComponent(getJSplitPane());

            jSplitPane1.setDividerSize(4);

            jSplitPane1.setDividerLocation(200);

        }

        return jSplitPane1;

    }

    /**

     * This method initializes jPanel

     *

     * @return javax.swing.JPanel

     */

    private javax.swing.JPanel getJPanel() {

        if (jPanel == null) {

            jPanel = new javax.swing.JPanel();

            jPanel.setLayout(new java.awt.BorderLayout());

            jPanel.add(getXmlTree(), java.awt.BorderLayout.CENTER);

        }

        return jPanel;

    }

    /**

     * This method initializes jPanel1

     *

     * @return javax.swing.JPanel

     */

    /* private javax.swing.JPanel getJPanel1() {

        if (jPanel1 == null) {

            jPanel1 = new javax.swing.JPanel();

            jPanel1.setLayout(new java.awt.BorderLayout());

            jPanel1.add(getAttributeTable(), java.awt.BorderLayout.CENTER);

        }

        return jPanel1;

    } */

    /**

     * Clase nodo que almacena los datos de cada nodo de un XML

     *

     * @author Fernando Gonz?lez Cort?s

     */

    public class Node extends DefaultMutableTreeNode {

        public HashMap attributes = new HashMap();

        public String content;

        public String name;

        /**

         * Representaci?n de texto de este objeto

         *

         * @return String

         */

        public String toString() {

            return name;

        }

    }

    /**

     * Handler que recibe los SAXEvents del XMLContent y se guarda la

     * informaci?n de forma jer?rquica en objetos Node

     *

     * @author Fernando Gonz?lez Cort?s

     */

    public class MyContentHandler implements ContentHandler {

        private Stack node = new Stack();

        private boolean betweenTags = false;

        private Node root = null;

        /**

         * @see org.xml.sax.ContentHandler#endDocument()

         */

        public void endDocument() throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#startDocument()

         */

        public void startDocument() throws SAXException {

            root = new Node();

            node.push(root);

        }

        /**

         * @see org.xml.sax.ContentHandler#characters(char[], int, int)

         */

        public void characters(char[] ch, int start, int length)

            throws SAXException {

            if (!betweenTags) {

                return;

            }

            Node actual = (Node) node.peek();

            actual.content = new String(ch, start, length).trim();

        }

        /**

         * @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int,

         *      int)

         */

        public void ignorableWhitespace(char[] ch, int start, int length)

            throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#endPrefixMapping(java.lang.String)

         */

        public void endPrefixMapping(String prefix) throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#skippedEntity(java.lang.String)

         */

        public void skippedEntity(String name) throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator)

         */

        public void setDocumentLocator(Locator locator) {

        }

        /**

         * @see org.xml.sax.ContentHandler#processingInstruction(java.lang.String,

         *      java.lang.String)

         */

        public void processingInstruction(String target, String data)

            throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String,

         *      java.lang.String)

         */

        public void startPrefixMapping(String prefix, String uri)

            throws SAXException {

        }

        /**

         * @see org.xml.sax.ContentHandler#endElement(java.lang.String,

         *      java.lang.String, java.lang.String)

         */

        public void endElement(String namespaceURI, String localName,

            String qName) throws SAXException {

            Node n = (Node) node.pop();

            ((Node) node.peek()).add(n);

            betweenTags = false;

        }

        /**

         * @see org.xml.sax.ContentHandler#startElement(java.lang.String,

         *      java.lang.String, java.lang.String, org.xml.sax.Attributes)

         */

        public void startElement(String namespaceURI, String localName,

            String qName, Attributes atts) throws SAXException {

            Node nuevo = new Node();

            nuevo.name = qName;

            for (int i = 0; i < atts.getLength(); i++) {

                nuevo.attributes.put(atts.getLocalName(i), atts.getValue(i));

            }

            node.push(nuevo);

            betweenTags = true;

        }

        /**

         * Obtiene la raiz del arbol generado o null si no se ha realizado

         * ning?n parseado

         *

         * @return

         */

        public Node getRoot() {

            return root;

        }

    }

public void setNamesColumn(String[] names){

        namesColumn=names;

}

}

//  @jve:visual-info  decl-index=0 visual-constraint="10,10"