source: trunk/gli/src/org/greenstone/gatherer/gui/NewCollectionMetadataPrompt.java@ 4448

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.Gatherer;
import org.greenstone.gatherer.checklist.CheckList;
import org.greenstone.gatherer.checklist.Entry;
import org.greenstone.gatherer.gui.GUIManager;
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.msm.MetadataSetManager;
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() {
    super(Gatherer.g_man, true);
    this.self = this;
    setJMenuBar(new SimpleMenuBar("2.1"));
    setModal(true);
    setSize(size);
    setTitle(get("Title"));

    // 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(".mds")) {
        sets.add(new MetadataSet(possible_mdses[i]));
        }               
    }         

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

    JLabel instructions_label = new JLabel(get("Metadata_Instructions"));

    JPanel center_pane = new JPanel();

    JPanel sets_list_pane = new JPanel();
    JLabel sets_list_label = new JLabel(get("Select_MDS"));
    sets_list_label.setOpaque(false);
    sets_list = new CheckList(sets);

    JPanel elements_list_pane = new JPanel();
    JLabel elements_list_label = new JLabel(get("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 JButton(get("General.OK"));
    JButton cancel_button = new JButton(get("General.Cancel"));
    // Connection
    ok_button.addActionListener(new OKButtonListener());
    cancel_button.addActionListener(new CancelButtonListener());
    sets_list.addListSelectionListener(new MetadataListSelectionListener());
    // Display
    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_label, 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 void determineMetadataElements(MetadataSet extracted_metadata) {
    // Hardcoded...
    extracted_metadata.addElement("Encoding");
    extracted_metadata.addElement("Language");
    extracted_metadata.addElement("Source");
    extracted_metadata.addElement("Title");
    }

    /** Gets a phrase from the dictionary based on key.
     * @param key A <strong>String</strong> which serves as the unique identifier of a phrase.
     * @return The desired phrase as a <strong>String</strong> or at least a meaningful error message.
     */
    private String get(String key) {
    if(key.indexOf(".") == -1) {
        key = "NewCollectionPrompt." + key;
    }
    return Gatherer.dictionary.get(key);
    }

    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();
        }
        }
        else {
        self.dispose();
        }
    }
    }
}