neweventdialog.java

图像检索的代码b

/*
 * This file is part of Caliph & Emir.
 *
 * Caliph & Emir 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.
 *
 * Caliph & Emir 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 Caliph & Emir; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Copyright statement:
 * --------------------
 * (c) 2002-2004 by Mathias Lux ([e-mail])
 * http://www.juggle.at
 */
/*
 *
 *
 *
 * @author Mathias Lux, [e-mail]
 * Date: 13.09.2002
 * Time: 11:02:20
 */
package at.lux.fotoannotation.dialogs;

import at.lux.fotoannotation.AnnotationToolkit;
import org.jdom.Element;
import org.jdom.Namespace;

import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.table.AbstractTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Iterator;
import java.util.StringTokenizer;
import java.util.Vector;

public class NewEventDialog extends JDialog implements ActionListener, NewDescriptorDialogInterface {
    private JTable datatable;
    private JTextArea address, freeText;
    Element eventDescriptor = null;

    public NewEventDialog(Frame owner) {
        super(owner, true);
        init();
    }

    private void init() {
        this.setTitle("Create new Event");
        datatable = new JTable(new AbstractTableModel() {
            String[] values = {"", "", ""};
            String[] keys = {"Event", "Date", "Place"};

            public int getColumnCount() {
                return 2;
            }

            public int getRowCount() {
                return keys.length;
            }

            public Object getValueAt(int rowIndex, int columnIndex) {
                if (columnIndex == 0)
                    return keys[rowIndex];
                else
                    return values[rowIndex];
            }

            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return (columnIndex == 1);
            }

            public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
                if (columnIndex == 1) values[rowIndex] = aValue.toString();
            }

            public String getColumnName(int column) {
                if (column == 0)
                    return "tag";
                else
                    return "value";
            }
        });
        datatable.getColumnModel().getColumn(0).setMaxWidth(80);
        datatable.getColumnModel().getColumn(0).setMinWidth(80);
        datatable.setValueAt(AnnotationToolkit.getMpeg7Time(), 1, 1);
        JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
        split.setDividerLocation(250);

        address = new JTextArea(4, 12);
        freeText = new JTextArea(4, 12);
        JPanel spane = new JPanel(new BorderLayout());
        JPanel bpane = new JPanel(new FlowLayout());
        JPanel apane = new JPanel(new BorderLayout());
        JPanel tpane = new JPanel(new BorderLayout());
        JPanel fpane = new JPanel(new BorderLayout());
        Border border = BorderFactory.createEtchedBorder();
        tpane.setBorder(BorderFactory.createTitledBorder(border, "Definition"));
        apane.setBorder(BorderFactory.createTitledBorder(border, "Address"));
        fpane.setBorder(BorderFactory.createTitledBorder(border, "Free text"));
        apane.add(new JScrollPane(address), BorderLayout.CENTER);
        tpane.add(new JScrollPane(datatable), BorderLayout.CENTER);
        fpane.add(new JScrollPane(freeText), BorderLayout.CENTER);
        spane.add(fpane, BorderLayout.CENTER);
        spane.add(apane, BorderLayout.NORTH);

        JButton ok = new JButton("OK");
        ok.addActionListener(this);
        ok.setActionCommand("ok");
        JButton cancel = new JButton("Cancel");
        cancel.addActionListener(this);
        cancel.setActionCommand("cancel");
        bpane.add(ok);
        bpane.add(cancel);

        split.add(tpane, JSplitPane.TOP);
        split.add(spane, JSplitPane.BOTTOM);
        this.getContentPane().add(split, BorderLayout.CENTER);
        this.getContentPane().add(bpane, BorderLayout.SOUTH);
    }

    /**
     * Invoked when an action occurs.
     */
    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("ok")) {
            if (createDocument()) {
                setVisible(false);
            }
        } else if (e.getActionCommand().equals("cancel")) {
            setVisible(false);
        }
    }

    private boolean createDocument() {

        boolean eventValid = false;
        String event = datatable.getValueAt(0, 1).toString();
        String date = datatable.getValueAt(1, 1).toString();
        String place = datatable.getValueAt(2, 1).toString();
        Vector addressLines = null;
        if (address.getText().length() > 0) {
            addressLines = new Vector();
            StringTokenizer t = new StringTokenizer(address.getText(), "\n", false);
            while (t.hasMoreElements()) {
                String s = t.nextToken();
                addressLines.add(s.trim());
            }
        }
        if (event.length() < 1) event = null;
        if (date.length() < 1) date = null;
        if (place.length() < 1) place = null;

        if (place != null) {
            System.out.println("[at.lux.fotoannotation.NewEventDialog] Generating MPEG-7");
            Namespace mpeg7, xsi;
            mpeg7 = Namespace.getNamespace("", "urn:mpeg:mpeg7:schema:2001");
            xsi = Namespace.getNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
            eventDescriptor = new Element("SemanticBase", mpeg7).setAttribute("type", "EventType", xsi);
            Element label = new Element("Label", mpeg7).addContent(new Element("Name", mpeg7).addContent(event));
            Element definition = null;
            if (freeText.getText().length() > 0) {
                definition = new Element("Definition", mpeg7).addContent(new Element("FreeTextAnnotation", mpeg7).addContent(freeText.getText()));
            }
            eventDescriptor.addContent(label);
            if (definition != null) {
                eventDescriptor.addContent(definition);
            }

            // Place && Time:
            Element elem_place = new Element("SemanticPlace", mpeg7);
            Element elem_time = new Element("SemanticTime", mpeg7);
            Element elem_event = new Element("Event", mpeg7);
            elem_event.addContent((Element) label.clone());
            if (place != null) {
                elem_place.addContent(new Element("Label", mpeg7).addContent(new Element("Name", mpeg7).addContent(place)));
                if (addressLines != null) {
                    Element elem_address = new Element("PostalAddress", mpeg7);
                    for (Iterator it1 = addressLines.iterator(); it1.hasNext();) {
                        String s = (String) it1.next();
                        elem_address.addContent(new Element("AddressLine", mpeg7).addContent(s));
                    }
                    elem_place.addContent(new Element("Place", mpeg7).addContent(elem_address));
                }
                elem_event.addContent(elem_place);
            }
            if (date != null) {
                elem_time.addContent(new Element("Label", mpeg7).addContent(new Element("Name", mpeg7).addContent("Time of " + event)));
                elem_time.addContent(new Element("Time", mpeg7).addContent(new Element("TimePoint", mpeg7).addContent(date)));
                elem_event.addContent(elem_time);
            }
            eventDescriptor.addContent(elem_event);
            eventValid = true;
        } else {
            JOptionPane.showMessageDialog(this, "At least the event name is needed!");
        }
        return eventValid;
    }

    public Element createXML() {
        return eventDescriptor;
    }
}