source: trunk/gli/src/org/greenstone/gatherer/gui/WriteCDImagePrompt.java@ 9350

/**
 *#########################################################################
 *
 * 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: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 1999 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.gui;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.ArrayList;
import javax.swing.*;
import javax.swing.event.*;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.DebugStream;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.collection.BasicCollectionConfiguration;
import org.greenstone.gatherer.shell.GShell;
import org.greenstone.gatherer.shell.GShellEvent;
import org.greenstone.gatherer.shell.GShellListener;
import org.greenstone.gatherer.util.ArrayTools;
import org.greenstone.gatherer.util.CheckList;
import org.greenstone.gatherer.util.CheckListEntry;
import org.greenstone.gatherer.util.StaticStrings;
import org.greenstone.gatherer.util.Utility;

/** This class provides the functionality to write a CD-ROM/DVD image of current collections from the GSDLHOME/collect/ directory to CDROM. The user chooses the collection from a list, where each entry also displays details about itself, confirms the delete of a collection by checking a checkbox then presses the ok button to actually delete the collection.
    Copied from DeleteCollectionPrompt
 * @author John Thompson, Greenstone Digital Library, University of Waikato
 * @version 2.3
 */
public class WriteCDImagePrompt
    extends ModalDialog 
    implements GShellListener {
    
    private OKButtonListener ok_button_listener;
    private ArrayList all_collections = null;
    private ArrayList selected_collections = null;
    /** The list of collections to include in exported cd-rom/dvd image */
    private CheckList list = null;
    /** The currently selected collection for deletion. */
    private BasicCollectionConfiguration collection = null;
    /** A reference to ourself so any inner-classes can dispose of us. */
    private WriteCDImagePrompt prompt = null;
    /** The close button, which exits the prompt without deleting anything. */
    private JButton cancel_button = null;
    /** The ok button which causes the selected collection to be deleted. */
    private JButton ok_button = null;
    /** The label above details. */
    private JLabel details_label = null;
    /** The label above the list. */
    private JLabel list_label = null;
    /** The text area used to display details about the collection selected. */
    private JTextArea details_textarea = null;
    /** The text area used to display instructions for the cd-rom/dvd export */
    private JTextArea instructions_textarea;
    /** A string array used to pass arguments to the phrase retrieval method. */
    private JTextField title_field = null;
    private JLabel title_label = null;
    private String args[] = null;
    private String cd_title = null;
    /** whether the exporting was successful or not */
    private boolean successful = false;
    /** whether we are trying to export or not */
    private boolean exporting = false;
    /** the error message if any */
    private StringBuffer error_message = null;
    /** The size of the export prompt screen. */
    public static final Dimension SIZE = new Dimension(500, 500);

    /** Constructor.
     * @see org.greenstone.gatherer.collection.WriteCDImagePrompt.CancelButtonListener
     * @see org.greenstone.gatherer.collection.WriteCDImagePrompt.CollectionListListener
     * @see org.greenstone.gatherer.collection.WriteCDImagePrompt.OKButtonListener
     */
    public WriteCDImagePrompt() {
    super(Gatherer.g_man, true);
    cancel_button = new GLIButton();
    cancel_button.setMnemonic(KeyEvent.VK_C);
    Dictionary.setBoth(cancel_button, "General.Close", "General.Close_Tooltip");
    details_textarea = new JTextArea();
    details_textarea.setEditable(false);
    Dictionary.setText(details_textarea, "DeleteCollectionPrompt.No_Collection");
    details_label = new JLabel();
    Dictionary.setText(details_label, "DeleteCollectionPrompt.Collection_Details");

    instructions_textarea = new JTextArea();
    instructions_textarea.setCaretPosition(0);
    instructions_textarea.setEditable(false);
    instructions_textarea.setLineWrap(true);
    instructions_textarea.setRows(4);
    instructions_textarea.setWrapStyleWord(true);
    Dictionary.registerText(instructions_textarea, "WriteCDImagePrompt.Instructions");

    all_collections = new ArrayList();
    list = new CheckList(true);
    list_label = new JLabel();
    Dictionary.setText(list_label, "DeleteCollectionPrompt.Collection_List");
    ok_button = new GLIButton();
    ok_button.setMnemonic(KeyEvent.VK_D);
    Dictionary.setBoth(ok_button, "WriteCDImagePrompt.Export", "WriteCDImagePrompt.Export_Tooltip");

    title_field = new JTextField();
    // Dictionary.setTooltip(title_field, "WriteCDImagePrompt.CD_Name_Tooltip");
    title_label = new JLabel();
    Dictionary.setText(title_label, "WriteCDImagePrompt.CD_Name");
    scanForCollections();
    list.setListData(all_collections);

    prompt = this;
    setSize(SIZE);
    Dictionary.setText(this, "WriteCDImagePrompt.Title");

    setJMenuBar(new SimpleMenuBar("0")); // need to find an appropriate help page to open at
    cancel_button.addActionListener(new CancelButtonListener());
    list.addListSelectionListener(new CollectionListListener());
    list.clearSelection();
    list.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    ok_button_listener = new OKButtonListener();
    ok_button.addActionListener(ok_button_listener);
    ok_button.setEnabled(false);
    //title.getDocument().addDocumentListener(new DocumentListener());
    }

    /** Destructor. */
    public void destroy() {
    all_collections.clear();
    all_collections = null;
    cancel_button = null;
    details_textarea = null;
    details_label = null;
    list = null;
    ok_button = null;
    prompt = null;
    if (selected_collections!=null) {
        selected_collections.clear();
        selected_collections = null;
    }
    title_field = null;
    title_label = null;
    }

    /** This method causes the modal prompt to be displayed. 
     * returns true if it has exported the collections that are currently selected */
    public boolean display() {
    // Top pane
    JPanel instructions_pane = new JPanel(new BorderLayout());
    instructions_pane.setBorder(BorderFactory.createEmptyBorder(0,0,5,0));
    instructions_pane.add(new JScrollPane(instructions_textarea), BorderLayout.CENTER);
    
    title_label.setBorder(BorderFactory.createEmptyBorder(0,5,0,15));

    JPanel title_pane = new JPanel(new BorderLayout());
    title_pane.add(title_label, BorderLayout.WEST);
    title_pane.add(title_field, BorderLayout.CENTER);
    instructions_pane.add(title_pane, BorderLayout.SOUTH);

    // Central pane
    JPanel list_pane = new JPanel(new BorderLayout());
    list_pane.add(list_label, BorderLayout.NORTH);
    list_pane.add(new JScrollPane(list), BorderLayout.CENTER);
    list_pane.setBorder(BorderFactory.createEmptyBorder(0, 0, 5, 0));

    JPanel details_pane = new JPanel(new BorderLayout());
    details_pane.add(details_label, BorderLayout.NORTH);
    details_pane.add(new JScrollPane(details_textarea), BorderLayout.CENTER);
    details_pane.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));

    JPanel central_pane = new JPanel(new GridLayout(2, 1));
    central_pane.add(list_pane);
    central_pane.add(details_pane);
    central_pane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

    // Lower pane
    JPanel button_pane = new JPanel(new GridLayout(1, 2));
    button_pane.add(ok_button);
    button_pane.add(cancel_button);
    button_pane.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));

    JPanel lower_pane = new JPanel(new BorderLayout());
    lower_pane.add(button_pane, BorderLayout.SOUTH);
    lower_pane.setBorder(BorderFactory.createEmptyBorder(0, 5, 5, 5));

    // Final.
    JPanel content_pane = (JPanel)this.getContentPane();
    content_pane.setLayout(new BorderLayout());
    content_pane.add(instructions_pane, BorderLayout.NORTH);
    content_pane.add(central_pane, BorderLayout.CENTER);
    content_pane.add(lower_pane, BorderLayout.SOUTH);

    // Center and display.
    Dimension screen_size = Configuration.screen_size;
    this.setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
    this.setVisible(true); // blocks until the dialog is killed
    return true;
    
    }

    
    /** This method calls the builcol.pl scripts via a GShell so as to not lock up the processor.
     * @see org.greenstone.gatherer.Configuration
     * @see org.greenstone.gatherer.Gatherer
     * @see org.greenstone.gatherer.collection.Collection
     * @see org.greenstone.gatherer.gui.BuildOptions
     * @see org.greenstone.gatherer.shell.GShell
     * @see org.greenstone.gatherer.shell.GShellListener
     * @see org.greenstone.gatherer.shell.GShellProgressMonitor
     * @see org.greenstone.gatherer.util.Utility
     */
    public void writeCDImageCollections() {
    DebugStream.println("WriteCDImagePrompt.writeCDImageCollections()");

    int num_collections = selected_collections.size();
    if (num_collections == 0) return;
    cd_title = title_field.getText();
    cd_title = cd_title.trim();
    cd_title = cd_title.replaceAll("\"","");
    int num_args = num_collections + 4;
    boolean has_title = false;
    if (!cd_title.equals("")) {
        num_args += 2;
        has_title = true;
    }
    String args[];
    int next_arg = 0;
    if(Utility.isWindows()) {
        args = new String[num_args+2];
        args[0] = Configuration.perl_path;
        args[1] = "-S";
        next_arg = 2;
    } else {
        args = new String[num_args];
    }
    
    args[next_arg] = Configuration.getScriptPath() + "exportcol.pl";
    next_arg++;
    args[next_arg] = "-gli"; next_arg++;
    args[next_arg] = "-language"; next_arg++;
    args[next_arg] = Configuration.getLanguage(); next_arg++;

    if (has_title) {
        args[next_arg] = "-cdname"; next_arg++;
        args[next_arg] = cd_title; next_arg++;
    }
    for (int i=0; i<num_collections;i++,next_arg++) {
        args[next_arg] = ((BasicCollectionConfiguration)selected_collections.get(i)).getShortName();
    }
    
    DebugStream.print("export command = ");
    for (int i=0; i<args.length; i++) {
        DebugStream.print(args[i]+" ");
    }
    DebugStream.println("");
    GShell process = new GShell(args, GShell.CDIMAGE, 3, this, null, GShell.GSHELL_CDIMAGE);
    process.start();
    //process.run();
    DebugStream.println("WriteCDImagePrompt.writeCDImageCollections().return");
    
    }

    /** Shows an export complete prompt. 
     * @param success A <strong>boolean</strong> indicating if the collection was successfully deleted.
     * @see org.greenstone.gatherer.collection.Collection
     */
    public void resultPrompt(boolean success, String extra) {
    args = new String[2];
    StringBuffer coll_names = new StringBuffer();
    for (int i=0; i<selected_collections.size();i++) {
        if (i>0) {
        coll_names.append(", ");
        }
        BasicCollectionConfiguration complete_collection = (BasicCollectionConfiguration)selected_collections.get(i);
        coll_names.append(complete_collection.getName() + StaticStrings.SPACE_CHARACTER + StaticStrings.OPEN_PARENTHESIS_CHARACTER + complete_collection.getShortName() + StaticStrings.CLOSE_PARENTHESIS_CHARACTER);
        complete_collection = null;
    }
    
    args[0] = coll_names.toString();
    args[1] = Configuration.gsdl_path+"tmp"+File.separator;
    if(cd_title.equals("")) {
        args[1] += "exported_collections";
    } else {
        args[1] += "exported_"+cd_title.replaceAll("\\s","");
    }
    String title;
    String label;
    if (success) {
        title = Dictionary.get("WriteCDImagePrompt.Successful_Title");
        label = Dictionary.get("WriteCDImagePrompt.Successful_Export", args);
    } else {
        title = Dictionary.get("WriteCDImagePrompt.Failed_Title");
        label = Dictionary.get("WriteCDImagePrompt.Failed_Export", args);
    }
    SimpleResultDialog result_dialog = new SimpleResultDialog(title, label, extra);
    result_dialog.setVisible(true); // Blocks
    result_dialog.dispose();
    result_dialog = null;
    }

    /** Method to scan the collect directory retrieving and reloading each collection it finds, while building the list of known collections.
     * @see org.greenstone.gatherer.Configuration
     * @see org.greenstone.gatherer.Gatherer
     * @see org.greenstone.gatherer.util.ArrayTools
     * @see org.greenstone.gatherer.util.Utility
     */
    private void scanForCollections() {
    // Start at the collect dir.
    File collect_directory = new File(Gatherer.getCollectDirectoryPath());
    if (collect_directory.exists()) {
        // Now for each child directory see if it contains a .col file and
        // if so try to load it..
        File collections[] = collect_directory.listFiles();
        ArrayTools.sort(collections);
        for(int i = 0; collections != null && i < collections.length; i++) {
        if(collections[i].isDirectory() && !collections[i].getName().equals(StaticStrings.MODEL_COLLECTION_NAME)) {
            File config_file = new File(collections[i], Utility.CONFIG_FILE);
            if (config_file.exists()) {
            BasicCollectionConfiguration config = new BasicCollectionConfiguration(config_file);
            all_collections.add(config);                
            config = null;
            }
        }
        }
    }
    // Otherwise the collect directory doesn't actually exist, so there ain't much we can do.
    }


    /** All implementation of GShellListener must include this method so the listener can be informed of messages from the GShell.
     * @param event A <strong>GShellEvent</strong> that contains, amoung other things, the message.
     */
    public synchronized void message(GShellEvent event) {
    // Ignore the messages from RecPlug with 'show_progress' set (used for progress bars)
    String message = event.getMessage();
    if (message.startsWith("exportcol.pl>")) {
        message = message.substring(13);
        //DebugStream.println("message = "+event.getMessage());
        error_message.append(message);
        error_message.append("\n");
    }
    }

    /** All implementation of GShellListener must include this method so the listener can be informed when a GShell begins its task. Implementation side-effect, not actually used.
     * @param event A <strong>GShellEvent</strong> that contains details of the initial state of the <strong>GShell</strong> before task comencement.
     */
    public synchronized void processBegun(GShellEvent event) {
    // We don't care. 
    }
    /** All implementation of GShellListener must include this method so the listener can be informed when a GShell completes its task.
     * @param event A <strong>GShellEvent</strong> that contains details of the final state of the <strong>GShell</strong> after task completion.
     */
    public synchronized void processComplete(GShellEvent event) {
    successful = false;
    if(event.getStatus() == GShell.OK) {
        if(event.getType() == GShell.CDIMAGE) {
        successful = true;
        }
    }
    ok_button_listener.processComplete();
    }

    /** A button listener implementation, which listens for actions on the close button and disposes of the dialog when detected. */
    private class CancelButtonListener 
    implements ActionListener {
    /** Any implementation of ActionListener must include this method so we can be informed when the button is actioned.
     * @param event An <strong>ActionEvent</strong> containing all the relevant information garnered from the event itself.
     */
    public void actionPerformed(ActionEvent event) {
        prompt.dispose();
    }
    }


    /** This private class listens for selection events in from the list and then displays the appropriate details for that collection.
     */
    private class CollectionListListener 
    implements ListSelectionListener
    {
    /** Any implementation of ListSelectionListener must include this method so we can be informed when the list selection changes.
     * @param  event a <strong>ListSelectionEvent</strong> containing all the relevant information garnered from the event itself
     */
    public void valueChanged(ListSelectionEvent event)
    {
        // Can only export when something is ticked
        ok_button.setEnabled(!list.isNothingTicked());

        if (list.isSelectionEmpty()) {
        // This only happens when the dialog is first entered
        Dictionary.setText(details_textarea, "DeleteCollectionPrompt.No_Collection");
        return;
        }

        collection = (BasicCollectionConfiguration) ((CheckListEntry) list.getSelectedValue()).getObject();
        args = new String[3];
        args[0] = collection.getCreator();
        args[1] = collection.getMaintainer();
        args[2] = collection.getDescription();
        Dictionary.setText(details_textarea, "DeleteCollectionPrompt.Details", args);
        details_textarea.setCaretPosition(0);
    }
    }


    /** The OK button listener implementation. */
    private class OKButtonListener 
    implements ActionListener {
    private Component glass_pane;
    private MouseListener mouse_blocker_listener;
    private ProgressDialog progress_dialog;

    /** Any implementation of ActionListener must include this method so we can be informed when the button is actioned.
     * @param event An <strong>ActionEvent</strong> containing all the relevant information garnered from the event itself.
     * @see org.greenstone.gatherer.Configuration
     * @see org.greenstone.gatherer.Gatherer
     * @see org.greenstone.gatherer.util.Utility
     */
    public void actionPerformed(ActionEvent event) {
        ///ystem.err.println("OK Clicked");
        // Make sure there are some colls specified
        selected_collections = list.getTicked();
        error_message = new StringBuffer();
        
        // Set the cursor to hourglass
        glass_pane = getGlassPane();
        mouse_blocker_listener = new MouseAdapter() {};
        glass_pane.addMouseListener(mouse_blocker_listener);
        glass_pane.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        glass_pane.setVisible(true);

        // Export the selected collection.
        ///ystem.err.println("Write CD-ROM/DVD image for named collections");
        writeCDImageCollections();

        // Show progress dialog
        ///ystem.err.println("Showing progress dialog");
        progress_dialog = new ProgressDialog();
        progress_dialog.setVisible(true);
    }

    public void processComplete() {
        ///ystem.err.println("Process complete");
        // Dispose of progress dialog
        progress_dialog.setVisible(false);
        progress_dialog.dispose();
        progress_dialog = null;

        // unset the cursor
        glass_pane.setVisible(false);
        glass_pane.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
        glass_pane.removeMouseListener(mouse_blocker_listener);
        glass_pane = null;
        mouse_blocker_listener= null;
        
        if (successful) {
        resultPrompt(true, error_message.toString());
        } else {
        resultPrompt(false, error_message.toString());
        }
        error_message = null;
    }

    private class ProgressDialog 
        extends ModalDialog {
        
        private Dimension size = new Dimension(400,65);
        
        public ProgressDialog() {
        super(Gatherer.g_man, Dictionary.get("WriteCDImagePrompt.Title"), true);
        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
        setSize(size);
        JPanel content_pane = (JPanel) getContentPane();
        JLabel progress_label = new JLabel();
        Dictionary.setText(progress_label, "WriteCDImagePrompt.Progress_Label");
        JProgressBar progress_bar = new JProgressBar();
        progress_bar.setIndeterminate(true);
        content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        content_pane.setLayout(new BorderLayout());
        content_pane.add(progress_label, BorderLayout.NORTH);
        content_pane.add(progress_bar, BorderLayout.CENTER);
        // Position
        Rectangle frame_bounds = Gatherer.g_man.getBounds();
        setLocation(frame_bounds.x + (frame_bounds.width - size.width) / 2, frame_bounds.y + (frame_bounds.height - size.height) / 2);
        }
    }
    }
}