source: trunk/gli/src/org/greenstone/gatherer/gui/NewCollectionMetadataPrompt.java@ 7183

/**
 *#########################################################################
 *
 * 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.
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */
package org.greenstone.gatherer.gui;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.checklist.CheckList;
import org.greenstone.gatherer.checklist.Entry;
import org.greenstone.gatherer.gui.GLIButton;
import org.greenstone.gatherer.gui.SimpleMenuBar;
import org.greenstone.gatherer.gui.ModalDialog;
import org.greenstone.gatherer.cdm.ElementWrapper;
import org.greenstone.gatherer.msm.MetadataSet;
import org.greenstone.gatherer.util.StaticStrings;
import org.greenstone.gatherer.util.Utility;
import org.w3c.dom.*;

public class NewCollectionMetadataPrompt
    extends ModalDialog {

    private boolean cancelled = true;
    private CheckList sets_list;
    private JDialog self;
    private JList elements_list;
    static private Dimension size = new Dimension(700, 380);

    public NewCollectionMetadataPrompt() {
    this(false);
    }
    public NewCollectionMetadataPrompt(boolean existing_coll) {
    super(Gatherer.g_man, true);
    this.self = this;
    if (existing_coll) {
        setJMenuBar(new SimpleMenuBar("openingacollection"));
        Dictionary.setText(this, "NewCollectionPrompt.Metadata_Title_Existing");
    } else {
        setJMenuBar(new SimpleMenuBar("creatingacollection"));
        Dictionary.setText(this, "NewCollectionPrompt.Title");
    }
    setModal(true);
    setSize(size);
    

    // And the remaining metadata sets.
    ArrayList sets = new ArrayList();
    // Determine what collections are available.
    File metadata_directory = new File(Utility.METADATA_DIR);
    File[] possible_mdses = metadata_directory.listFiles();
    for(int i = 0; i < possible_mdses.length; i++) {
        String name = possible_mdses[i].getName();
        if(name.endsWith(StaticStrings.METADATA_SET_EXTENSION) && !name.equals(Utility.EXTRACTED_METADATA_NAMESPACE + StaticStrings.METADATA_SET_EXTENSION)) {
        sets.add(new MetadataSet(possible_mdses[i]));
        }
    }

    // Creation
    JPanel content_pane = (JPanel) getContentPane();

    JPanel instructions_panel = new JPanel();
    JLabel instructions_label1 = new JLabel();
    Dictionary.setText(instructions_label1, "NewCollectionPrompt.Metadata_Instructions1");
    JLabel instructions_label2 = new JLabel();
    Dictionary.setText(instructions_label2, "NewCollectionPrompt.Metadata_Instructions2");

    JPanel center_pane = new JPanel();

    JPanel sets_list_pane = new JPanel();
    JLabel sets_list_label = new JLabel();
    sets_list_label.setOpaque(false);
    Dictionary.setText(sets_list_label, "NewCollectionPrompt.Select_MDS");
    sets_list = new CheckList(sets, true);

    JPanel elements_list_pane = new JPanel();
    JLabel elements_list_label = new JLabel();
    Dictionary.setText(elements_list_label, "NewCollectionPrompt.Metadata_Elements");
    elements_list = new JList();
    elements_list.setBackground(Gatherer.config.getColor("coloring.collection_tree_background", false));
    elements_list.setForeground(Gatherer.config.getColor("coloring.collection_tree_foreground", false));
    elements_list.setSelectionBackground(Gatherer.config.getColor("coloring.collection_tree_background", false));
    elements_list.setSelectionForeground(Gatherer.config.getColor("coloring.collection_tree_foreground", false));

    JPanel button_pane = new JPanel();
    JButton ok_button = new GLIButton();
    ok_button.setMnemonic(KeyEvent.VK_O);
    Dictionary.setBoth(ok_button, "General.OK", "General.OK_Tooltip");
    JButton cancel_button = new GLIButton();
    cancel_button.setMnemonic(KeyEvent.VK_C);
    Dictionary.setBoth(cancel_button, "General.Cancel", "General.Pure_Cancel_Tooltip");

    // Connection
    ok_button.addActionListener(new OKButtonListener());
    cancel_button.addActionListener(new CancelButtonListener());
    sets_list.addListSelectionListener(new MetadataListSelectionListener());

    // Display
    instructions_panel.setLayout(new GridLayout(2,1));
    instructions_panel.add(instructions_label1);
    instructions_panel.add(instructions_label2);

    sets_list_pane.setLayout(new BorderLayout());
    sets_list_pane.add(sets_list_label, BorderLayout.NORTH);
    sets_list_pane.add(new JScrollPane(sets_list), BorderLayout.CENTER);

    elements_list_pane.setLayout(new BorderLayout());
    elements_list_pane.add(elements_list_label, BorderLayout.NORTH);
    elements_list_pane.add(new JScrollPane(elements_list), BorderLayout.CENTER);

    center_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
    center_pane.setLayout(new GridLayout(2,1,0,5));
    center_pane.add(sets_list_pane);
    center_pane.add(elements_list_pane);

    button_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
    button_pane.setLayout(new GridLayout(1,2,5,0));
    button_pane.add(ok_button);
    button_pane.add(cancel_button);

    content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    content_pane.setLayout(new BorderLayout());
    content_pane.add(instructions_panel, BorderLayout.NORTH);
    content_pane.add(center_pane, BorderLayout.CENTER);
    content_pane.add(button_pane, BorderLayout.SOUTH);

    // Show
    Dimension screen_size = Gatherer.config.screen_size;
    setLocation((screen_size.width - size.width) / 2, (screen_size.height - size.height) / 2);
    setVisible(true);
    }

    public ArrayList getSets() {
    return sets_list.getSelected();
    }

    public boolean isCancelled() {
    return cancelled;
    }

    private class CancelButtonListener
    implements ActionListener {
    public void actionPerformed(ActionEvent event) {
        cancelled = true;
        self.dispose();
    }
    }

    public class MetadataListSelectionListener
    implements ListSelectionListener {
    public void valueChanged(ListSelectionEvent event) {
        if(!sets_list.isSelectionEmpty()) {
        // Retrieve the selected set.
        Entry entry = (Entry) sets_list.getSelectedValue();
        MetadataSet set = (MetadataSet) entry.getObject();
        entry = null;
        // Build a model from its elements.
        NodeList elements = set.getElements();
        set = null;
        Vector elements_model = new Vector();
        for(int i = 0; i < elements.getLength(); i++) {
            elements_model.add(new ElementWrapper(elements.item(i)));
        }
        elements = null;
        Collections.sort(elements_model);
        elements_list.setListData(elements_model);
        elements_model = null;
        }
        else {
        elements_list.setListData(new String[0]);
        }
    }
    }

    public class OKButtonListener
    implements ActionListener {
    public void actionPerformed(ActionEvent event) {
        // See if the user has selected no metadata sets, and if so confirm thats what they really want.
        ArrayList selected_sets = sets_list.getSelected();
        cancelled = false;
        if(selected_sets.size() == 0) {
        WarningDialog dialog = new WarningDialog("warning.NoMetadataSetsSelected", true);
        if(dialog.display() == JOptionPane.OK_OPTION) {
            // Otherwise we are free to go
            self.dispose();
        }
        dialog.dispose();
        dialog = null;
        }
        else {
        self.dispose();
        }
    }
    }
}