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/**
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* '$RCSfile$'
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* Copyright: 2004 University of New Mexico and the
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* Regents of the University of California
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*
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* '$Author: costa $'
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* '$Date: 2004-06-03 16:09:23 -0700 (Thu, 03 Jun 2004) $'
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* '$Revision: 2177 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.harvesterClient;
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import java.awt.BorderLayout;
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import java.awt.Dimension;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.io.Reader;
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import javax.swing.JButton;
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import javax.swing.JFileChooser;
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import javax.swing.JFrame;
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import javax.swing.JMenu;
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import javax.swing.JMenuBar;
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import javax.swing.JMenuItem;
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import javax.swing.JOptionPane;
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import javax.swing.JPanel;
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import javax.swing.JScrollPane;
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import javax.swing.JTable;
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import javax.swing.KeyStroke;
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import javax.swing.ListSelectionModel;
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import javax.swing.event.ListSelectionEvent;
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import javax.swing.event.ListSelectionListener;
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import javax.swing.table.TableColumn;
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import javax.swing.table.TableModel;
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import javax.swing.text.Document;
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import javax.xml.parsers.ParserConfigurationException;
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import org.xml.sax.Attributes;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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import org.xml.sax.XMLReader;
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import org.xml.sax.helpers.DefaultHandler;
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import org.xml.sax.helpers.XMLReaderFactory;
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import edu.ucsb.nceas.metacat.harvesterClient.Harvester;
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import edu.ucsb.nceas.utilities.Options;
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/**
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* The Harvest List Editor reads a Harvest List XML file and displays it as a
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* JTable. Allows user to add, modify, or delete <Document> elements in the
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* Harvest List, and save changes back to the disk.
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*
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*/
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public class HarvestListEditor extends JFrame implements ActionListener {
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// Column names for the JTable
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String[] columnNames = {
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"Scope",
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"Identifier",
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"Revision",
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"Document Type",
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"Document URL"
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};
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String clipboardDocumentType = "";
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String clipboardDocumentURL = "";
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String clipboardIdentifier = "";
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String clipboardRevision = "";
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String clipboardScope = "";
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JButton copyButton;
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JButton cutButton;
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String defaultDocumentType;
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String defaultDocumentURL;
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String defaultHarvestList;
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String defaultIdentifier;
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String defaultRevision;
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String defaultScope;
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Document doc;
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JScrollPane docPane;
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JFileChooser fileChooser = new JFileChooser();
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File harvestListFile;
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boolean harvestListHasChanged = false;
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JMenuBar menuBar;
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final int numColumns = 5;
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final int numRows = 300;
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Options options;
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boolean optionsTest = false; // true only for JUnit testing
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JButton pasteButton;
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JButton pasteDefaultsButton;
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Object[][] rowData = new Object[numRows][numColumns];
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private String schemaLocation =
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"eml://ecoinformatics.org/harvestList ../../lib/harvester/harvestList.xsd";
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int selectedRow = -1;
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final JTable table;
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TableModel tableModel;
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// Menu items
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JMenuItem exitMenuItem = new JMenuItem("Exit");
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JMenuItem newMenuItem = new JMenuItem("New");
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JMenuItem openMenuItem = new JMenuItem("Open...");
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JMenuItem saveMenuItem = new JMenuItem("Save");
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JMenuItem saveAsMenuItem = new JMenuItem("Save As...");
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/**
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* The main program. Instantiate the main frame, a HarvestListEditor object.
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*
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* @param args
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*/
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public static void main(String[] args) {
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HarvestListEditor harvestListEditor = new HarvestListEditor();
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}
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/**
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* Constructor for HarvestListEditor class.
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*/
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public HarvestListEditor() {
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super("Harvest List Editor");
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JPanel buttonPanel = new JPanel();
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String[] fileItems =
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new String[] {"New", "Open...", "Save", "Save As...", "Exit"};
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JMenu fileMenu = new JMenu("File");
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char[] fileShortCuts = {'N', 'O', 'S', 'A', 'X'};
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TableColumn tableColumn;
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// Load default values from the metacat.properties file
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Harvester.loadOptions(optionsTest);
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options = Harvester.options;
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defaultHarvestList = options.getOption("defaultHarvestList");
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defaultDocumentType = options.getOption("defaultDocumentType");
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defaultDocumentURL = options.getOption("defaultDocumentURL");
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defaultIdentifier = options.getOption("defaultIdentifier");
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defaultRevision = options.getOption("defaultRevision");
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defaultScope = options.getOption("defaultScope");
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System.out.println("defaultHarvestList: " + defaultHarvestList);
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System.out.println("defaultDocumentType: " + defaultDocumentType);
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System.out.println("defaultDocumentURL: " + defaultDocumentURL);
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System.out.println("defaultIdentifier: " + defaultIdentifier);
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System.out.println("defaultRevision: " + defaultRevision);
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System.out.println("defaultScope: " + defaultScope);
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setSize(1000, 400);
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setDefaultCloseOperation(EXIT_ON_CLOSE);
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menuBar = new JMenuBar();
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/*
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* Add menu items to the File menu
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*/
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newMenuItem.setAccelerator(KeyStroke.getKeyStroke('N',
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java.awt.Event.CTRL_MASK,
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false));
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newMenuItem.addActionListener(this);
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fileMenu.add(newMenuItem);
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openMenuItem.setAccelerator(KeyStroke.getKeyStroke('O',
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java.awt.Event.CTRL_MASK,
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false));
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openMenuItem.addActionListener(this);
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fileMenu.add(openMenuItem);
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saveMenuItem.setAccelerator(KeyStroke.getKeyStroke('S',
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java.awt.Event.CTRL_MASK,
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false));
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saveMenuItem.addActionListener(this);
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saveMenuItem.setEnabled(false);
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fileMenu.add(saveMenuItem);
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saveAsMenuItem.setAccelerator(KeyStroke.getKeyStroke('A',
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java.awt.Event.CTRL_MASK,
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false));
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saveAsMenuItem.addActionListener(this);
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fileMenu.add(saveAsMenuItem);
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exitMenuItem.setAccelerator(KeyStroke.getKeyStroke('X',
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java.awt.Event.CTRL_MASK,
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false));
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exitMenuItem.addActionListener(this);
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fileMenu.add(exitMenuItem);
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menuBar.add(fileMenu); // Add the File menu to the menu bar
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setJMenuBar(menuBar); // Set the frame's menu bar to this menu bar
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//table = new JTable(numRows, numColumns);
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table = new JTable(rowData, columnNames);
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table.setPreferredScrollableViewportSize(new Dimension(900, 300));
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tableColumn = table.getColumnModel().getColumn(0);
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tableColumn.setPreferredWidth(200);
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tableColumn = table.getColumnModel().getColumn(1);
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tableColumn.setPreferredWidth(50);
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tableColumn = table.getColumnModel().getColumn(2);
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tableColumn.setPreferredWidth(50);
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tableColumn = table.getColumnModel().getColumn(3);
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tableColumn.setPreferredWidth(300);
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tableColumn = table.getColumnModel().getColumn(4);
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tableColumn.setPreferredWidth(300);
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table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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tableModel = table.getModel();
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//Ask to be notified of selection changes.
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ListSelectionModel rowSM = table.getSelectionModel();
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rowSM.addListSelectionListener(new ListSelectionListener() {
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public void valueChanged(ListSelectionEvent e) {
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ListSelectionModel lsm;
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//Ignore extra messages.
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if (e.getValueIsAdjusting()) return;
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lsm = (ListSelectionModel)e.getSource();
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// If now row is selected, disable all buttons.
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if (lsm.isSelectionEmpty()) {
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selectedRow = -1;
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cutButton.setEnabled(false);
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copyButton.setEnabled(false);
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pasteButton.setEnabled(false);
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pasteDefaultsButton.setEnabled(false);
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}
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// If a row is selected, manage the buttons based on the selected row
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// and the current clipboard values.
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else {
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selectedRow = lsm.getMinSelectionIndex();
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manageButtons(selectedRow);
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}
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}
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});
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docPane = new JScrollPane(table);
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getContentPane().add(docPane, BorderLayout.CENTER);
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cutButton = new JButton("Cut");
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copyButton = new JButton("Copy");
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pasteButton = new JButton("Paste");
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pasteDefaultsButton = new JButton("Paste Defaults");
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// Action listener for the Copy button.
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copyButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent ae) {
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copyRow(selectedRow);
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manageButtons(selectedRow);
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harvestListHasChanged = true;
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}
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}
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);
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// Action listener for the Cut button.
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cutButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent ae) {
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cutRow(selectedRow);
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manageButtons(selectedRow);
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harvestListHasChanged = true;
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}
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}
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);
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// Action listener for the Paste button.
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pasteButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent ae) {
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pasteRow(selectedRow);
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manageButtons(selectedRow);
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harvestListHasChanged = true;
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}
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}
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);
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// Action listener for the Paste Defaults button.
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pasteDefaultsButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent ae) {
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pasteDefaultValues(selectedRow);
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manageButtons(selectedRow);
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harvestListHasChanged = true;
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}
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}
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);
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cutButton.setEnabled(false);
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copyButton.setEnabled(false);
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pasteButton.setEnabled(false);
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pasteDefaultsButton.setEnabled(false);
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buttonPanel.add(cutButton);
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buttonPanel.add(copyButton);
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buttonPanel.add(pasteButton);
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buttonPanel.add(pasteDefaultsButton);
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buttonPanel.setOpaque(true);
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getContentPane().add(buttonPanel, BorderLayout.SOUTH);
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// If the default Harvest List option has a value, and the file exists,
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// loads its contents.
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//
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if ((defaultHarvestList != null) && (!defaultHarvestList.equals(""))) {
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harvestListFile = new File(defaultHarvestList);
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if (harvestListFile.exists()) {
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try {
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loadHarvestList(harvestListFile);
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saveMenuItem.setEnabled(true);
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}
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catch (ParserConfigurationException e) {
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System.out.println("Error parsing Harvest List: " + e.getMessage());
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}
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}
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}
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setVisible(true);
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}
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/**
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* Implements action listeners for menu items.
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*
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* @param e An ActionEvent object, determines the menu item that was
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* selected.
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*/
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public void actionPerformed(ActionEvent e) {
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if ((e.getActionCommand()).equals("New")) {
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fileNew();
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}
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else if ((e.getActionCommand()).equals("Open...")) {
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fileOpen();
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}
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else if ((e.getActionCommand()).equals("Save")) {
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fileSave();
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}
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else if ((e.getActionCommand()).equals("Save As...")) {
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fileSaveAs();
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}
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else if ((e.getActionCommand()).equals("Exit")) {
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fileExit();
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}
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}
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/**
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* Adds a new row to the table, setting values for each of the five columns
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* in the row.
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*
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* @param rowIndex the row index
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* @param scope the scope string
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* @param identifier the identifier string
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* @param revision the revision string
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* @param documentType the document type
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* @param documentURL the document URL
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*/
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void addRow(int rowIndex, String scope, String identifier, String revision,
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String documentType, String documentURL) {
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tableModel.setValueAt(scope, rowIndex, 0);
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tableModel.setValueAt(identifier, rowIndex, 1);
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tableModel.setValueAt(revision, rowIndex, 2);
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tableModel.setValueAt(documentType, rowIndex, 3);
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tableModel.setValueAt(documentURL, rowIndex, 4);
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}
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/**
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* Composes a single tag line to be written in the Harvest List.
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*
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* @param indentLevel the number of spaces to begin the line with
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* @param tag the tag name
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* @param text the text to insert within the begin and end tags
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* @return line the composed line
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*/
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String composeLine(int indentLevel, String tag, String text) {
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String line = "";
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for (int i = 0; i < indentLevel; i++) {
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line += " ";
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}
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line += "<" + tag + ">";
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line += text;
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line += "</" + tag + ">";
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return line;
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}
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/**
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* Clears all rows in the table, setting all values to null.
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*/
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void clearHarvestList() {
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for (int rowIndex = 0; rowIndex < numRows; rowIndex++) {
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clearRow(rowIndex);
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}
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}
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/**
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* Clears a single row in the tables, setting all five fields to null.
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*
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* @param rowIndex the index to the table row to be cleared
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*/
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void clearRow(int rowIndex) {
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final String nil = null;
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tableModel.setValueAt(nil, rowIndex, 0);
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tableModel.setValueAt(nil, rowIndex, 1);
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tableModel.setValueAt(nil, rowIndex, 2);
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tableModel.setValueAt(nil, rowIndex, 3);
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tableModel.setValueAt(nil, rowIndex, 4);
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}
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/**
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* Copies the values in a given table row to the clipboard.
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*
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* @param rowIndex the index of the table row to be copied
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*/
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void copyRow(int rowIndex) {
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clipboardScope = (String) tableModel.getValueAt(rowIndex, 0);
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clipboardIdentifier = (String) tableModel.getValueAt(rowIndex, 1);
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clipboardRevision = (String) tableModel.getValueAt(rowIndex, 2);
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clipboardDocumentType = (String) tableModel.getValueAt(rowIndex, 3);
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clipboardDocumentURL = (String) tableModel.getValueAt(rowIndex, 4);
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}
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/**
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* Cuts a row from the table. The row is copied to the clipboard and then
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* cleared.
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*
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* @param rowIndex the index of the table row to be copied
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*/
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449
|
void cutRow(int rowIndex) {
|
450
|
copyRow(rowIndex);
|
451
|
clearRow(rowIndex);
|
452
|
}
|
453
|
|
454
|
|
455
|
/**
|
456
|
* Exit from the Harvest List Editor. Prompt to save changes if appropriate.
|
457
|
*/
|
458
|
void fileExit() {
|
459
|
int value;
|
460
|
|
461
|
if (harvestListHasChanged) {
|
462
|
value = saveChangesDialog();
|
463
|
|
464
|
if (value == JOptionPane.YES_OPTION) {
|
465
|
try {
|
466
|
// Save the changes then exit
|
467
|
//
|
468
|
fileSave();
|
469
|
System.exit(0);
|
470
|
}
|
471
|
catch (Exception exception) {
|
472
|
exception.printStackTrace();
|
473
|
}
|
474
|
}
|
475
|
else if (value == JOptionPane.NO_OPTION) {
|
476
|
// Exit without saving changes
|
477
|
System.exit(0);
|
478
|
}
|
479
|
}
|
480
|
else {
|
481
|
System.exit(0);
|
482
|
}
|
483
|
}
|
484
|
|
485
|
|
486
|
/**
|
487
|
* Replace the current Harvest List with an empty Harvest List. Prompt to save
|
488
|
* changes if appropriate.
|
489
|
*/
|
490
|
void fileNew() {
|
491
|
int value;
|
492
|
|
493
|
if (harvestListHasChanged) {
|
494
|
value = saveChangesDialog();
|
495
|
|
496
|
if (value == JOptionPane.YES_OPTION) {
|
497
|
try {
|
498
|
fileSave();
|
499
|
}
|
500
|
catch (Exception exception) {
|
501
|
exception.printStackTrace();
|
502
|
}
|
503
|
}
|
504
|
else if (value == JOptionPane.CANCEL_OPTION) {
|
505
|
return;
|
506
|
}
|
507
|
}
|
508
|
|
509
|
clearHarvestList();
|
510
|
harvestListFile = null;
|
511
|
saveMenuItem.setEnabled(false);
|
512
|
harvestListHasChanged = false;
|
513
|
}
|
514
|
|
515
|
|
516
|
/**
|
517
|
* Opens a file dialog to load a Harvest List. Prompts to save changes to the
|
518
|
* current Harvest List if appropriate.
|
519
|
*/
|
520
|
void fileOpen() {
|
521
|
int value;
|
522
|
|
523
|
if (harvestListHasChanged) {
|
524
|
value = saveChangesDialog();
|
525
|
|
526
|
if (value == JOptionPane.YES_OPTION) {
|
527
|
try {
|
528
|
fileSave();
|
529
|
}
|
530
|
catch (Exception exception) {
|
531
|
exception.printStackTrace();
|
532
|
}
|
533
|
}
|
534
|
else if (value == JOptionPane.CANCEL_OPTION) {
|
535
|
return;
|
536
|
}
|
537
|
}
|
538
|
|
539
|
value = fileChooser.showOpenDialog(HarvestListEditor.this);
|
540
|
|
541
|
if (value == JFileChooser.APPROVE_OPTION) {
|
542
|
harvestListFile = fileChooser.getSelectedFile();
|
543
|
try {
|
544
|
clearHarvestList();
|
545
|
loadHarvestList(harvestListFile);
|
546
|
}
|
547
|
catch (ParserConfigurationException e) {
|
548
|
System.out.println("Error parsing Harvest List: " + e.getMessage());
|
549
|
}
|
550
|
harvestListHasChanged = false;
|
551
|
saveMenuItem.setEnabled(true);
|
552
|
}
|
553
|
}
|
554
|
|
555
|
|
556
|
/**
|
557
|
* Save the current Harvest List to disk.
|
558
|
*/
|
559
|
void fileSave() {
|
560
|
if (harvestListFile != null) {
|
561
|
writeFile(harvestListFile);
|
562
|
harvestListHasChanged = false;
|
563
|
}
|
564
|
else {
|
565
|
System.out.println("No action taken");
|
566
|
}
|
567
|
}
|
568
|
|
569
|
|
570
|
/**
|
571
|
* Save the current Harvest List as a potentially different file name.
|
572
|
*/
|
573
|
void fileSaveAs() {
|
574
|
int returnVal;
|
575
|
|
576
|
returnVal = fileChooser.showOpenDialog(HarvestListEditor.this);
|
577
|
|
578
|
if (returnVal == JFileChooser.APPROVE_OPTION) {
|
579
|
harvestListFile = fileChooser.getSelectedFile();
|
580
|
writeFile(harvestListFile);
|
581
|
saveMenuItem.setEnabled(true);
|
582
|
harvestListHasChanged = false;
|
583
|
}
|
584
|
}
|
585
|
|
586
|
|
587
|
/**
|
588
|
* Determines whether the clipboard is currently empty. The clipboard is
|
589
|
* empty if all five of the fields are empty.
|
590
|
*
|
591
|
* @return true if the clipboard is empty, else false
|
592
|
*/
|
593
|
boolean isEmptyClipboard() {
|
594
|
boolean isEmpty = true;
|
595
|
|
596
|
isEmpty = isEmpty && (clipboardScope.equals(""));
|
597
|
isEmpty = isEmpty && (clipboardIdentifier.equals(""));
|
598
|
isEmpty = isEmpty && (clipboardRevision.equals(""));
|
599
|
isEmpty = isEmpty && (clipboardDocumentType.equals(""));
|
600
|
isEmpty = isEmpty && (clipboardDocumentURL.equals(""));
|
601
|
|
602
|
return isEmpty;
|
603
|
}
|
604
|
|
605
|
|
606
|
/**
|
607
|
* Determines whether a given row in the table is empty. A row is empty if
|
608
|
* all five of its fields contain either null or "".
|
609
|
*
|
610
|
* @param rowIndex the index to the row in the table that is being checked
|
611
|
* @return true if the row is empty, else false
|
612
|
*/
|
613
|
boolean isEmptyRow(int rowIndex) {
|
614
|
boolean isEmpty = true;
|
615
|
String scope = (String) tableModel.getValueAt(rowIndex, 0);
|
616
|
String identifier = (String) tableModel.getValueAt(rowIndex, 1);
|
617
|
String revision = (String) tableModel.getValueAt(rowIndex, 2);
|
618
|
String documentType = (String) tableModel.getValueAt(rowIndex, 3);
|
619
|
String documentURL = (String) tableModel.getValueAt(rowIndex, 4);
|
620
|
|
621
|
isEmpty = isEmpty && ((scope == null) || (scope.equals("")));
|
622
|
isEmpty = isEmpty && ((identifier == null) || (identifier.equals("")));
|
623
|
isEmpty = isEmpty && ((revision == null) || (revision.equals("")));
|
624
|
isEmpty = isEmpty && ((documentType == null) || (documentType.equals("")));
|
625
|
isEmpty = isEmpty && ((documentURL == null) || (documentURL.equals("")));
|
626
|
|
627
|
return isEmpty;
|
628
|
}
|
629
|
|
630
|
|
631
|
/**
|
632
|
* Loads the Harvest List from a file. Parses the file using the inner class,
|
633
|
* HarvestListHandler, a SAX parser.
|
634
|
*
|
635
|
* @param harvestList the File to be loaded
|
636
|
* @throws ParserConfigurationException
|
637
|
*/
|
638
|
void loadHarvestList(File harvestList) throws ParserConfigurationException {
|
639
|
HarvestListHandler harvestListHandler = new HarvestListHandler();
|
640
|
FileInputStream fis;
|
641
|
InputStreamReader inputStreamReader;
|
642
|
|
643
|
try {
|
644
|
fis = new FileInputStream(harvestList);
|
645
|
inputStreamReader = new InputStreamReader(fis);
|
646
|
System.out.println("Opened file successfully.");
|
647
|
harvestListHandler.runParser(this, inputStreamReader, schemaLocation);
|
648
|
fis.close();
|
649
|
}
|
650
|
catch (SAXException e) {
|
651
|
System.out.println("Error parsing Harvest List: " + e.getMessage());
|
652
|
}
|
653
|
catch (ClassNotFoundException e) {
|
654
|
System.out.println("ClassNotFoundException: " + e.getMessage());
|
655
|
}
|
656
|
catch (IOException ioe) {
|
657
|
System.out.println("Error opening file: " + ioe.getMessage());
|
658
|
}
|
659
|
}
|
660
|
|
661
|
|
662
|
/**
|
663
|
* Enables or disables buttons depending on the state of the currently
|
664
|
* selected row and the state of the clipboard.
|
665
|
*
|
666
|
* @param rowIndex the index of the currently selected row
|
667
|
*/
|
668
|
void manageButtons(int rowIndex) {
|
669
|
|
670
|
if (isEmptyRow(rowIndex)) {
|
671
|
// Selected row is empty, so disable cut and copy
|
672
|
cutButton.setEnabled(false);
|
673
|
copyButton.setEnabled(false);
|
674
|
}
|
675
|
else {
|
676
|
// Selected row is not empty, so enable cut and copy
|
677
|
cutButton.setEnabled(true);
|
678
|
copyButton.setEnabled(true);
|
679
|
}
|
680
|
|
681
|
if (isEmptyClipboard()) {
|
682
|
// Clipboard is empty, so disable paste
|
683
|
pasteButton.setEnabled(false);
|
684
|
}
|
685
|
else {
|
686
|
// Clipboard is not empty, so enable paste
|
687
|
pasteButton.setEnabled(true);
|
688
|
}
|
689
|
|
690
|
// Paste Defaults button is enabled whenever a row is selected
|
691
|
pasteDefaultsButton.setEnabled(true);
|
692
|
}
|
693
|
|
694
|
|
695
|
/**
|
696
|
* Pastes the clipboard values into the specified row.
|
697
|
*
|
698
|
* @param rowIndex the index of the row that is being pasted to
|
699
|
*/
|
700
|
void pasteRow(int rowIndex) {
|
701
|
tableModel.setValueAt(clipboardScope, rowIndex, 0);
|
702
|
tableModel.setValueAt(clipboardIdentifier, rowIndex, 1);
|
703
|
tableModel.setValueAt(clipboardRevision, rowIndex, 2);
|
704
|
tableModel.setValueAt(clipboardDocumentType, rowIndex, 3);
|
705
|
tableModel.setValueAt(clipboardDocumentURL, rowIndex, 4);
|
706
|
}
|
707
|
|
708
|
|
709
|
/**
|
710
|
* Pastes the default values into the specified row.
|
711
|
*
|
712
|
* @param rowIndex the index of the row that is being pasted to
|
713
|
*/
|
714
|
void pasteDefaultValues(int rowIndex) {
|
715
|
tableModel.setValueAt(defaultScope, rowIndex, 0);
|
716
|
tableModel.setValueAt(defaultIdentifier, rowIndex, 1);
|
717
|
tableModel.setValueAt(defaultRevision, rowIndex, 2);
|
718
|
tableModel.setValueAt(defaultDocumentType, rowIndex, 3);
|
719
|
tableModel.setValueAt(defaultDocumentURL, rowIndex, 4);
|
720
|
}
|
721
|
|
722
|
|
723
|
/**
|
724
|
* Dialog to determine whether user wants to save changes before proceeding.
|
725
|
*
|
726
|
* @return integer value that determines whether the user responded with
|
727
|
* "Yes", "No", or "Cancel"
|
728
|
*/
|
729
|
int saveChangesDialog () {
|
730
|
Object[] options = {"Yes", "No", "Cancel"};
|
731
|
int value;
|
732
|
|
733
|
value = JOptionPane.showOptionDialog(null,
|
734
|
"Save Changes?",
|
735
|
"Warning",
|
736
|
JOptionPane.DEFAULT_OPTION,
|
737
|
JOptionPane.WARNING_MESSAGE,
|
738
|
null,
|
739
|
options,
|
740
|
options[0]); // default option
|
741
|
return value;
|
742
|
}
|
743
|
|
744
|
|
745
|
/**
|
746
|
* Writes the contents of the table to file as XML.
|
747
|
*
|
748
|
* @param harvestList the File object to write to
|
749
|
*/
|
750
|
void writeFile(File harvestList) {
|
751
|
try {
|
752
|
PrintWriter out = new PrintWriter(new FileWriter(harvestList));
|
753
|
out.println("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
|
754
|
out.println("");
|
755
|
out.println(
|
756
|
"<hrv:harvestList xmlns:hrv=\"eml://ecoinformatics.org/harvestList\" >");
|
757
|
|
758
|
for (int i = 0; i < numRows; i++) {
|
759
|
if (!isEmptyRow(i)) {
|
760
|
writeRow(out, i);
|
761
|
}
|
762
|
}
|
763
|
|
764
|
out.println("");
|
765
|
out.println("</hrv:harvestList>");
|
766
|
out.close();
|
767
|
}
|
768
|
catch (IOException ioe) {
|
769
|
System.out.println("IOException: " + ioe.getMessage());
|
770
|
}
|
771
|
}
|
772
|
|
773
|
|
774
|
/**
|
775
|
* Writes a row of the table to file. A row corresponds to a single
|
776
|
* <Document> element in the Harvest List.
|
777
|
*
|
778
|
* @param out the PrintWriter object for the file
|
779
|
* @param rowIndex the index of the table row that is being written to file
|
780
|
*/
|
781
|
void writeRow(PrintWriter out, int rowIndex) {
|
782
|
int indentLevel = 6;
|
783
|
String scope = (String) tableModel.getValueAt(rowIndex, 0);
|
784
|
String identifier = (String) tableModel.getValueAt(rowIndex, 1);
|
785
|
String revision = (String) tableModel.getValueAt(rowIndex, 2);
|
786
|
String documentType = (String) tableModel.getValueAt(rowIndex, 3);
|
787
|
String documentURL = (String) tableModel.getValueAt(rowIndex, 4);
|
788
|
|
789
|
out.println("");
|
790
|
out.println(" <document>");
|
791
|
out.println(" <docid>");
|
792
|
out.println(composeLine(indentLevel, "scope", scope));
|
793
|
out.println(composeLine(indentLevel, "identifier", identifier));
|
794
|
out.println(composeLine(indentLevel, "revision", revision));
|
795
|
out.println(" </docid>");
|
796
|
indentLevel = 4;
|
797
|
out.println(composeLine(indentLevel, "documentType", documentType));
|
798
|
out.println(composeLine(indentLevel, "documentURL", documentURL));
|
799
|
out.println(" </document>");
|
800
|
}
|
801
|
|
802
|
|
803
|
/**
|
804
|
* This inner class extends DefaultHandler. It parses the Harvest List file,
|
805
|
* writing a new row to the table every time it encounters a </Document>
|
806
|
* end tag.
|
807
|
*/
|
808
|
class HarvestListHandler extends DefaultHandler implements ErrorHandler {
|
809
|
|
810
|
public String scope;
|
811
|
public int identifier;
|
812
|
public String identifierString;
|
813
|
public String documentType;
|
814
|
private HarvestListEditor harvestListEditor;
|
815
|
public int revision;
|
816
|
public String revisionString;
|
817
|
private int rowIndex = 0;
|
818
|
public String documentURL;
|
819
|
private String currentQname;
|
820
|
public final static String DEFAULT_PARSER =
|
821
|
"org.apache.xerces.parsers.SAXParser";
|
822
|
private boolean schemaValidate = true;
|
823
|
|
824
|
|
825
|
/**
|
826
|
* This method is called for any plain text within an element.
|
827
|
* It parses the value for any of the following elements:
|
828
|
* <scope>, <identifier>, <revision>, <documentType>, <documentURL>
|
829
|
*
|
830
|
* @param ch the character array holding the parsed text
|
831
|
* @param start the start index
|
832
|
* @param length the text length
|
833
|
*
|
834
|
*/
|
835
|
public void characters (char ch[], int start, int length) {
|
836
|
String s = new String(ch, start, length);
|
837
|
|
838
|
if (length > 0) {
|
839
|
if (currentQname.equals("scope")) {
|
840
|
scope += s;
|
841
|
}
|
842
|
else if (currentQname.equals("identifier")) {
|
843
|
identifierString += s;
|
844
|
}
|
845
|
else if (currentQname.equals("revision")) {
|
846
|
revisionString += s;
|
847
|
}
|
848
|
else if (currentQname.equals("documentType")) {
|
849
|
documentType += s;
|
850
|
}
|
851
|
else if (currentQname.equals("documentURL")) {
|
852
|
documentURL += s;
|
853
|
}
|
854
|
}
|
855
|
}
|
856
|
|
857
|
|
858
|
/**
|
859
|
* Handles an end-of-document event.
|
860
|
*/
|
861
|
public void endDocument () {
|
862
|
System.out.println("Finished parsing Harvest List");
|
863
|
}
|
864
|
|
865
|
|
866
|
/**
|
867
|
* Handles an end-of-element event. If the end tag is </Document>, then
|
868
|
* creates a new HarvestDocument object and pushes it to the document
|
869
|
* list.
|
870
|
*
|
871
|
* @param uri
|
872
|
* @param localname
|
873
|
* @param qname
|
874
|
*/
|
875
|
public void endElement(String uri,
|
876
|
String localname,
|
877
|
String qname) {
|
878
|
|
879
|
HarvestDocument harvestDocument;
|
880
|
|
881
|
if (qname.equals("identifier")) {
|
882
|
identifier = Integer.parseInt(identifierString);
|
883
|
}
|
884
|
else if (qname.equals("revision")) {
|
885
|
revision = Integer.parseInt(revisionString);
|
886
|
}
|
887
|
else if (qname.equals("document")) {
|
888
|
harvestListEditor.addRow(rowIndex, scope, identifierString,
|
889
|
revisionString, documentType, documentURL);
|
890
|
rowIndex++;
|
891
|
}
|
892
|
|
893
|
currentQname = "";
|
894
|
}
|
895
|
|
896
|
|
897
|
/**
|
898
|
* Method for handling errors during a parse
|
899
|
*
|
900
|
* @param exception The parsing error
|
901
|
* @exception SAXException Description of Exception
|
902
|
*/
|
903
|
public void error(SAXParseException e) throws SAXParseException {
|
904
|
System.out.println("SAXParseException: " + e.getMessage());
|
905
|
throw e;
|
906
|
}
|
907
|
|
908
|
|
909
|
/**
|
910
|
* Run the validating parser
|
911
|
*
|
912
|
* @param xml the xml stream to be validated
|
913
|
* @schemaLocation relative path the to XML Schema file, e.g. "."
|
914
|
* @exception IOException thrown when test files can't be opened
|
915
|
* @exception ClassNotFoundException thrown when SAX Parser class not found
|
916
|
* @exception SAXException
|
917
|
* @exception SAXParserException
|
918
|
*/
|
919
|
public void runParser(HarvestListEditor harvestListEditor,
|
920
|
Reader xml,
|
921
|
String schemaLocation)
|
922
|
throws IOException, ClassNotFoundException,
|
923
|
SAXException, SAXParseException {
|
924
|
|
925
|
// Get an instance of the parser
|
926
|
XMLReader parser;
|
927
|
|
928
|
this.harvestListEditor = harvestListEditor;
|
929
|
this.rowIndex = 0;
|
930
|
|
931
|
parser = XMLReaderFactory.createXMLReader(DEFAULT_PARSER);
|
932
|
// Set Handlers in the parser
|
933
|
parser.setContentHandler((ContentHandler)this);
|
934
|
parser.setErrorHandler((ErrorHandler)this);
|
935
|
parser.setFeature("http://xml.org/sax/features/namespaces", true);
|
936
|
parser.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
|
937
|
parser.setFeature("http://xml.org/sax/features/validation", true);
|
938
|
parser.setProperty(
|
939
|
"http://apache.org/xml/properties/schema/external-schemaLocation",
|
940
|
schemaLocation);
|
941
|
|
942
|
if (schemaValidate) {
|
943
|
parser.setFeature("http://apache.org/xml/features/validation/schema",
|
944
|
true);
|
945
|
}
|
946
|
|
947
|
// Parse the document
|
948
|
parser.parse(new InputSource(xml));
|
949
|
}
|
950
|
|
951
|
|
952
|
/**
|
953
|
* Handles a start-of-document event.
|
954
|
*/
|
955
|
public void startDocument () {
|
956
|
System.out.println("Started parsing Harvest List");
|
957
|
}
|
958
|
|
959
|
|
960
|
/**
|
961
|
* Handles a start-of-element event.
|
962
|
*
|
963
|
* @param uri
|
964
|
* @param localname
|
965
|
* @param qname
|
966
|
* @param attributes
|
967
|
*/
|
968
|
public void startElement(String uri,
|
969
|
String localname,
|
970
|
String qname,
|
971
|
Attributes attributes) {
|
972
|
|
973
|
currentQname = qname;
|
974
|
|
975
|
if (qname.equals("scope")) {
|
976
|
scope = "";
|
977
|
}
|
978
|
else if (qname.equals("identifier")) {
|
979
|
identifierString = "";
|
980
|
}
|
981
|
else if (qname.equals("revision")) {
|
982
|
revisionString = "";
|
983
|
}
|
984
|
else if (qname.equals("documentType")) {
|
985
|
documentType = "";
|
986
|
}
|
987
|
else if (qname.equals("documentURL")) {
|
988
|
documentURL = "";
|
989
|
}
|
990
|
}
|
991
|
}
|
992
|
}
|