source: gli/trunk/src/org/greenstone/gatherer/gems/NewMetadataElementNamePrompt.java@ 18412

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * <BR><BR>
 *
 * Author: Katherine Don, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 2006 New Zealand Digital Library Project
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */
package org.greenstone.gatherer.gems;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.gui.GLIButton;
import org.greenstone.gatherer.gui.ModalDialog;

public class NewMetadataElementNamePrompt
    extends ModalDialog {
    private Dimension SIZE = new Dimension(350, 120);

    private boolean cancelled = false;
    private String element_name = null;
    private JTextField name_textfield = null;
    private JDialog prompt;
    private Object model;
    public NewMetadataElementNamePrompt(Frame parent, boolean subelement, Object model) {
    super(parent, true);
    setSize(SIZE);
    prompt = this;
    this.model = model;
    JPanel content_pane = (JPanel) getContentPane();
    content_pane.setOpaque(true);
        content_pane.setComponentOrientation(Dictionary.getOrientation());
        
    JLabel name_label = new JLabel();
    name_label.setComponentOrientation(Dictionary.getOrientation());
        if (subelement) {
        setTitle(Dictionary.get("GEMS.NewMetadataElementNamePrompt.SubTitle"));
        name_label.setText(Dictionary.get("GEMS.NewMetadataElementNamePrompt.SubName"));
    } else {
        setTitle(Dictionary.get("GEMS.NewMetadataElementNamePrompt.Title"));
        name_label.setText(Dictionary.get("GEMS.NewMetadataElementNamePrompt.Name"));
    }

    name_textfield = new JTextField();
        name_textfield.setComponentOrientation(Dictionary.getOrientation());
    name_textfield.addKeyListener(new KeyAdapter() {
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
            //same as clicking OK button
            validateElementName();
            }
        }
        });

    JPanel details_pane = new JPanel();
        details_pane.setComponentOrientation(Dictionary.getOrientation());
    details_pane.setLayout(new GridLayout(2,1));
    details_pane.add(name_label);
    details_pane.add(name_textfield);
        
    JPanel button_pane = new JPanel();
    button_pane.setLayout(new GridLayout(1,2));
    GLIButton ok_button = new GLIButton(Dictionary.get("General.OK"), Dictionary.get("General.OK_Tooltip"));        
    GLIButton cancel_button = new GLIButton(Dictionary.get("General.Cancel"), Dictionary.get("General.Cancel_Tooltip"));
    button_pane.add(ok_button);
    button_pane.add(cancel_button);
        
    // Add listeners
    ok_button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            validateElementName();
        }
        });
    cancel_button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            cancelled = true;
            prompt.dispose();
        }
        });
        
    content_pane.setLayout(new BorderLayout(5,5));
    content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    content_pane.add(details_pane, BorderLayout.CENTER);
    content_pane.add(button_pane, BorderLayout.SOUTH);
        
    Dimension screen_size = Configuration.screen_size;
    setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
    setVisible(true);
        
    }

    public String getName() {
    return element_name;
    }

    public boolean isCancelled() {
    return cancelled;
    }

    private void validateElementName() {
    String name = name_textfield.getText();
    if (name.equals("")) {
        JOptionPane.showMessageDialog(prompt,Dictionary.get("GEMS.NewMetadataElementNamePrompt.EmptyName_Error_Message"), Dictionary.get("GEMS.NewMetadataElementNamePrompt.Name_Error"), JOptionPane.ERROR_MESSAGE);
        return;
    } 
    boolean already_used = false;
    if (model instanceof MetadataSetModel) {
        already_used = ((MetadataSetModel)model).doesChildWithThisNameExist(name);
    } else if (model instanceof MetadataElementModel) {
        already_used = ((MetadataElementModel)model).doesChildWithThisNameExist(name);
    }
    if (!already_used) {
        element_name = name;
        prompt.dispose();
    } else {
        JOptionPane.showMessageDialog(prompt,Dictionary.get("GEMS.NewMetadataElementNamePrompt.Name_Error_Message"), Dictionary.get("GEMS.NewMetadataElementNamePrompt.Name_Error"), JOptionPane.ERROR_MESSAGE);
    }
    }
}