Package megamek.client.ui.swing

Source Code of megamek.client.ui.swing.BoardEditor$HexCanvas

/*
* MegaMek - Copyright (C) 2000-2003 Ben Mazur (bmazur@sev.org)
*
*  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.
*/
package megamek.client.ui.swing;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Insets;
import java.awt.SystemColor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.filechooser.FileFilter;

import keypoint.PngEncoder;
import megamek.client.event.BoardViewEvent;
import megamek.client.event.BoardViewListenerAdapter;
import megamek.client.ui.Messages;
import megamek.common.Coords;
import megamek.common.Game;
import megamek.common.Hex;
import megamek.common.IBoard;
import megamek.common.IHex;
import megamek.common.ITerrain;
import megamek.common.MapSettings;
import megamek.common.Terrains;
import megamek.common.util.BoardUtilities;

public class BoardEditor extends JComponent implements ItemListener,
        ListSelectionListener, ActionListener, DocumentListener,
        IMapSettingsObserver {
    /**
     *
     */
    private static final long serialVersionUID = 4689863639249616192L;
    JFrame frame = new JFrame();
    private Game game = new Game();
    IBoard board = game.getBoard();
    BoardView1 bv;
    private Component bvc;
    private CommonMenuBar menuBar = new CommonMenuBar();
    private CommonAboutDialog about;
    private CommonHelpDialog help;
    private CommonSettingsDialog setdlg;
    IHex curHex = new Hex();
    private File curfileImage;
    private File curfile;
    // buttons and labels and such:
    private HexCanvas canHex;
    private JLabel labElev;
    private JTextField texElev;
    private JButton butElevUp;
    private JButton butElevDown;
    private JLabel labTerrain;
    private JList lisTerrain;
    private JButton butDelTerrain;
    private JPanel panTerrainType;
    private JComboBox choTerrainType;
    private JTextField texTerrainLevel;
    private JPanel panTerrExits;
    private JCheckBox cheTerrExitSpecified;
    private JTextField texTerrExits;
    private JButton butTerrExits;
    private JPanel panRoads;
    private JCheckBox cheRoadsAutoExit;
    private JLabel labTheme;
    private JTextField texTheme;
    private JButton butAddTerrain;
    private JLabel blankL;
    private JLabel labBoard;
    private JPanel panButtons;
    private JButton butBoardNew;
    private JButton butBoardLoad;
    private JButton butBoardSave;
    private JButton butBoardSaveAs;
    private JButton butBoardSaveAsImage;
    private JButton butMiniMap;
    private JDialog minimapW;
    private MiniMap minimap;
    private MapSettings mapSettings = new MapSettings();

    Coords lastClicked;

    /**
     * Creates and lays out a new Board Editor frame.
     */
    public BoardEditor() {
        try {
            bv = new BoardView1(game);
            bvc = bv.getComponent();
        } catch (IOException e) {
            JOptionPane
                    .showMessageDialog(
                            frame,
                            Messages.getString("BoardEditor.CouldntInitialize") + e, Messages.getString("BoardEditor.FatalError"), JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ //$NON-NLS-2$
            frame.dispose();
        }
        bv.addBoardViewListener(new BoardViewListenerAdapter() {
            @Override
            public void hexMoused(BoardViewEvent b) {
                Coords c = b.getCoords();
                if (c.equals(lastClicked)) {
                    return;
                }
                lastClicked = c;
                bv.cursor(c);
                if ((b.getModifiers() & InputEvent.ALT_MASK) != 0) {
                    setCurrentHex(board.getHex(b.getCoords()));
                } else if ((b.getModifiers() & InputEvent.CTRL_MASK) != 0) {
                    if (!board.getHex(b.getCoords()).equals(curHex)) {
                        paintHex(b.getCoords());
                    }
                } else if ((b.getModifiers() & InputEvent.SHIFT_MASK) != 0) {
                    addToHex(b.getCoords());
                } else if ((b.getModifiers() & InputEvent.BUTTON1_MASK) != 0) {
                    resurfaceHex(b.getCoords());
                }
            }
        });
        bv.setUseLOSTool(false);
        setupEditorPanel();
        setupFrame();
        frame.setVisible(true);
        if (GUIPreferences.getInstance().getNagForMapEdReadme()) {
            String title = Messages.getString("BoardEditor.readme.title"); //$NON-NLS-1$
            String body = Messages.getString("BoardEditor.readme.message"); //$NON-NLS-1$
            ConfirmDialog confirm = new ConfirmDialog(frame, title, body, true);
            confirm.setVisible(true);
            if (!confirm.getShowAgain()) {
                GUIPreferences.getInstance().setNagForMapEdReadme(false);
            }
            if (confirm.getAnswer()) {
                showHelp();
            }
        }
    }

    /**
     * Sets up the frame that will display the editor.
     */
    private void setupFrame() {
        frame.setTitle(Messages.getString("BoardEditor.title")); //$NON-NLS-1$
        frame.getContentPane().setLayout(new BorderLayout());

        frame.getContentPane().add(bvc, BorderLayout.CENTER);
        frame.getContentPane().add(this, BorderLayout.EAST);
        menuBar.addActionListener(this);
        frame.setJMenuBar(menuBar);
        frame.setBackground(SystemColor.menu);
        frame.setForeground(SystemColor.menuText);
        if (GUIPreferences.getInstance().getWindowSizeHeight() != 0) {
            frame.setLocation(GUIPreferences.getInstance().getWindowPosX(),
                    GUIPreferences.getInstance().getWindowPosY());
            frame.setSize(GUIPreferences.getInstance().getWindowSizeWidth(),
                    GUIPreferences.getInstance().getWindowSizeHeight());
        } else {
            frame.setSize(800, 600);
        }

        // when frame is closing, just hide it
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                frame.setVisible(false);
                setMapVisible(false);
            }
        });
    }

    /**
     * Sets up the editor panel, which goes on the right of the map and has
     * controls for editing the current square.
     */
    private void setupEditorPanel() {
        canHex = new HexCanvas();
        labElev = new JLabel(
                Messages.getString("BoardEditor.labElev"), SwingConstants.RIGHT); //$NON-NLS-1$
        texElev = new JTextField("0", 1); //$NON-NLS-1$
        texElev.addActionListener(this);
        texElev.getDocument().addDocumentListener(this);
        butElevUp = new JButton(Messages.getString("BoardEditor.butElevUp")); //$NON-NLS-1$
        butElevUp.addActionListener(this);
        butElevDown = new JButton(Messages.getString("BoardEditor.butElevDown")); //$NON-NLS-1$
        butElevDown.addActionListener(this);
        labTerrain = new JLabel(
                Messages.getString("BoardEditor.labTerrain"), SwingConstants.LEFT); //$NON-NLS-1$
        lisTerrain = new JList(new DefaultListModel());
        lisTerrain.addListSelectionListener(this);
        lisTerrain.setVisibleRowCount(6);
        refreshTerrainList();
        butDelTerrain = new JButton(Messages
                .getString("BoardEditor.butDelTerrain")); //$NON-NLS-1$
        butDelTerrain.addActionListener(this);
        String[] terrainArray = new String[Terrains.SIZE - 1];
        for (int i = 1; i < Terrains.SIZE; i++) {
            terrainArray[i - 1] = Terrains.getName(i);
        }
        texTerrainLevel = new JTextField("0", 1); //$NON-NLS-1$
        choTerrainType = new JComboBox(terrainArray);
        texTerrainLevel = new JTextField("0", 1); //$NON-NLS-1$
        butAddTerrain = new JButton(Messages
                .getString("BoardEditor.butAddTerrain")); //$NON-NLS-1$
        butAddTerrain.addActionListener(this);
        butMiniMap = new JButton(Messages.getString("BoardEditor.butMiniMap")); //$NON-NLS-1$
        butMiniMap.setActionCommand("viewMiniMap"); //$NON-NLS-1$
        butMiniMap.addActionListener(this);
        panTerrainType = new JPanel(new BorderLayout());
        panTerrainType.add(choTerrainType, BorderLayout.WEST);
        panTerrainType.add(texTerrainLevel, BorderLayout.CENTER);
        cheTerrExitSpecified = new JCheckBox(Messages
                .getString("BoardEditor.cheTerrExitSpecified")); //$NON-NLS-1$
        butTerrExits = new JButton(Messages
                .getString("BoardEditor.butTerrExits")); //$NON-NLS-1$
        texTerrExits = new JTextField("0", 1); //$NON-NLS-1$
        butTerrExits.addActionListener(this);
        panTerrExits = new JPanel(new FlowLayout());
        panTerrExits.add(cheTerrExitSpecified);
        panTerrExits.add(butTerrExits);
        panTerrExits.add(texTerrExits);
        panRoads = new JPanel(new FlowLayout());
        cheRoadsAutoExit = new JCheckBox(Messages
                .getString("BoardEditor.cheRoadsAutoExit")); //$NON-NLS-1$
        cheRoadsAutoExit.addItemListener(this);
        panRoads.add(cheRoadsAutoExit);
        labTheme = new JLabel(
                Messages.getString("BoardEditor.labTheme"), SwingConstants.LEFT); //$NON-NLS-1$
        texTheme = new JTextField("", 15); //$NON-NLS-1$
        texTheme.getDocument().addDocumentListener(this);
        labBoard = new JLabel(
                Messages.getString("BoardEditor.labBoard"), SwingConstants.LEFT); //$NON-NLS-1$
        butBoardNew = new JButton(Messages.getString("BoardEditor.butBoardNew")); //$NON-NLS-1$
        butBoardNew.setActionCommand("fileBoardNew"); //$NON-NLS-1$
        butBoardNew.addActionListener(this);
        butBoardLoad = new JButton(Messages
                .getString("BoardEditor.butBoardLoad")); //$NON-NLS-1$
        butBoardLoad.setActionCommand("fileBoardOpen"); //$NON-NLS-1$
        butBoardLoad.addActionListener(this);
        butBoardSave = new JButton(Messages
                .getString("BoardEditor.butBoardSave")); //$NON-NLS-1$
        butBoardSave.setActionCommand("fileBoardSave"); //$NON-NLS-1$
        butBoardSave.addActionListener(this);
        butBoardSaveAs = new JButton(Messages
                .getString("BoardEditor.butBoardSaveAs")); //$NON-NLS-1$
        butBoardSaveAs.setActionCommand("fileBoardSaveAs"); //$NON-NLS-1$
        butBoardSaveAs.addActionListener(this);
        butBoardSaveAsImage = new JButton(Messages
                .getString("BoardEditor.butBoardSaveAsImage")); //$NON-NLS-1$
        butBoardSaveAsImage.setActionCommand("fileBoardSaveAsImage"); //$NON-NLS-1$
        butBoardSaveAsImage.addActionListener(this);
        panButtons = new JPanel(new GridLayout(3, 2, 2, 2));
        panButtons.add(labBoard);
        panButtons.add(butBoardNew);
        panButtons.add(butBoardLoad);
        panButtons.add(butBoardSave);
        panButtons.add(butBoardSaveAs);
        panButtons.add(butBoardSaveAsImage);
        blankL = new JLabel("", SwingConstants.CENTER); //$NON-NLS-1$
        GridBagLayout gridbag = new GridBagLayout();
        GridBagConstraints c = new GridBagConstraints();
        setLayout(gridbag);
        c.fill = GridBagConstraints.HORIZONTAL;
        c.weightx = 0.0;
        c.insets = new Insets(4, 4, 1, 1);
        c.gridwidth = GridBagConstraints.REMAINDER;
        c.weighty = 1.0;
        addBag(canHex, gridbag, c);
        c.weighty = 0.0;
        c.gridwidth = 1;
        addBag(labElev, gridbag, c);
        addBag(butElevUp, gridbag, c);
        addBag(butElevDown, gridbag, c);
        c.gridwidth = GridBagConstraints.REMAINDER;
        addBag(texElev, gridbag, c);
        addBag(labTerrain, gridbag, c);
        addBag(new JScrollPane(lisTerrain), gridbag, c);
        addBag(butDelTerrain, gridbag, c);
        addBag(panTerrainType, gridbag, c);
        addBag(panTerrExits, gridbag, c);
        addBag(panRoads, gridbag, c);
        addBag(labTheme, gridbag, c);
        addBag(texTheme, gridbag, c);
        addBag(butAddTerrain, gridbag, c);
        addBag(butMiniMap, gridbag, c);
        c.weightx = 1.0;
        c.weighty = 1.0;
        addBag(blankL, gridbag, c);
        c.weightx = 1.0;
        c.weighty = 0.0;
        // addBag(labBoard, gridbag, c);
        addBag(panButtons, gridbag, c);
        minimapW = new JDialog(frame, Messages
                .getString("BoardEditor.minimapW"), false); //$NON-NLS-1$
        minimapW.setLocation(GUIPreferences.getInstance().getMinimapPosX(),
                GUIPreferences.getInstance().getMinimapPosY());
        try {
            minimap = new MiniMap(minimapW, game, bv);
        } catch (IOException e) {
            JOptionPane
                    .showMessageDialog(
                            frame,
                            Messages
                                    .getString("BoardEditor.CouldNotInitialiseMinimap") + e, Messages.getString("BoardEditor.FatalError"), JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ //$NON-NLS-2$
            frame.dispose();
        }
        minimapW.add(minimap);
        setMapVisible(true);
    }

    private void addBag(JComponent comp, GridBagLayout gridbag,
            GridBagConstraints c) {
        gridbag.setConstraints(comp, c);
        add(comp);
    }

    /**
     * Apply the current Hex to the Board at the specified location.
     */
    void paintHex(Coords c) {
        board.setHex(c, curHex.duplicate());
    }

    /**
     * Apply the current Hex to the Board at the specified location.
     */
    public void resurfaceHex(Coords c) {
        if (board.contains(c)) {
            IHex newHex = curHex.duplicate();
            newHex.setElevation(board.getHex(c).getElevation());
            board.setHex(c, newHex);
        }
    }

    /**
     * Apply the current Hex to the Board at the specified location.
     */
    public void addToHex(Coords c) {
        if (board.contains(c)) {
            IHex newHex = curHex.duplicate();
            IHex oldHex = board.getHex(c);
            newHex.setElevation(oldHex.getElevation());
            for (int i = 0; i < Terrains.SIZE; i++) {
                if (!newHex.containsTerrain(i) && oldHex.containsTerrain(i)) {
                    newHex.addTerrain(oldHex.getTerrain(i));
                }
            }
            board.setHex(c, newHex);
        }
    }

    /**
     * Sets the current hex
     *
     * @param hex hex to set.
     */
    void setCurrentHex(IHex hex) {
        curHex = hex.duplicate();
        texElev.setText(Integer.toString(curHex.getElevation()));
        refreshTerrainList();
        if (lisTerrain.getModel().getSize() > 0) {
            lisTerrain.setSelectedIndex(0);
            refreshTerrainFromList();
        }
        texTheme.setText(curHex.getTheme());
        repaint();
        repaintWorkingHex();
    }

    private void repaintWorkingHex() {
        if (curHex != null) {
            TilesetManager tm = bv.getTilesetManager();
            tm.clearHex(curHex);
        }
        canHex.repaint();
        lastClicked = null;
    }

    /**
     * Refreshes the terrain list to match the current hex
     */
    private void refreshTerrainList() {
        ((DefaultListModel) lisTerrain.getModel()).removeAllElements();
        for (int i = 0; i < Terrains.SIZE; i++) {
            ITerrain terrain = curHex.getTerrain(i);
            if (terrain != null) {
                ((DefaultListModel) lisTerrain.getModel()).addElement(terrain
                        .toString());
            }
        }
    }

    /**
     * Returns a new instance of the terrain that is currently entered in the
     * terrain input fields
     */
    private ITerrain enteredTerrain() {
        int type = Terrains.getType((String) choTerrainType.getSelectedItem());
        int level = Integer.parseInt(texTerrainLevel.getText());
        boolean exitsSpecified = cheTerrExitSpecified.isSelected();
        int exits = Integer.parseInt(texTerrExits.getText());
        return Terrains.getTerrainFactory().createTerrain(type, level,
                exitsSpecified, exits);
    }

    /**
     * Add or set the terrain to the list based on the fields.
     */
    private void addSetTerrain() {
        ITerrain toAdd = enteredTerrain();
        curHex.addTerrain(toAdd);
        refreshTerrainList();
        repaintWorkingHex();
    }

    /**
     * Set all the appropriate terrain field to match the currently selected
     * terrain in the list.
     */
    private void refreshTerrainFromList() {
        if (lisTerrain.getSelectedIndex() == -1) {
            return;
        }
        ITerrain terrain = Terrains.getTerrainFactory().createTerrain(
                (String) lisTerrain.getSelectedValue());
        terrain = curHex.getTerrain(terrain.getType());
        choTerrainType.setSelectedItem(Terrains.getName(terrain.getType()));
        texTerrainLevel.setText(Integer.toString(terrain.getLevel()));
        cheTerrExitSpecified.setSelected(terrain.hasExitsSpecified());
        texTerrExits.setText(Integer.toString(terrain.getExits()));
    }

    public void boardNew() {
        RandomMapDialog rmd = new RandomMapDialog(frame, this, mapSettings);
        rmd.setVisible(true);
        board = BoardUtilities.generateRandom(mapSettings);
        game.setBoard(board);
        curfile = null;
        frame.setTitle(Messages.getString("BoardEditor.title")); //$NON-NLS-1$
        menuBar.setBoard(true);
        bvc.doLayout();
    }

    public void updateMapSettings(MapSettings newSettings) {
        mapSettings = newSettings;
    }

    public void boardLoad() {
        JFileChooser fc = new JFileChooser("data" + File.separator + "boards");
        fc
                .setLocation(frame.getLocation().x + 150,
                        frame.getLocation().y + 100);
        fc.setDialogTitle(Messages.getString("BoardEditor.loadBoard"));
        fc.setFileFilter(new FileFilter() {
            @Override
            public boolean accept(File dir) {
                return null != dir.getName()
                        && dir.getName().endsWith(".board"); //$NON-NLS-1$
            }

            @Override
            public String getDescription() {
                return ".board";
            }
        });
        int returnVal = fc.showOpenDialog(frame);
        if (returnVal != JFileChooser.APPROVE_OPTION
                || fc.getSelectedFile() == null) {
            // I want a file, y'know!
            return;
        }
        curfile = fc.getSelectedFile();
        // load!
        try {
            InputStream is = new FileInputStream(fc.getSelectedFile());
            // tell the board to load!
            board.load(is);
            // okay, done!
            is.close();
            menuBar.setBoard(true);
        } catch (IOException ex) {
            System.err.println("error opening file to save!"); //$NON-NLS-1$
            System.err.println(ex);
        }
        frame.setTitle(Messages.getString("BoardEditor.title0") + curfile); //$NON-NLS-1$
        cheRoadsAutoExit.setSelected(board.getRoadsAutoExit());
        refreshTerrainList();
    }

    /**
     * Checks to see if there is already a path and name stored; if not, calls
     * "save as"; otherwise, saves the board to the specified file.
     */
    private void boardSave() {
        if (curfile == null) {
            boardSaveAs();
            return;
        }
        // save!
        try {
            OutputStream os = new FileOutputStream(curfile);
            // tell the board to save!
            board.save(os);
            // okay, done!
            os.close();
        } catch (IOException ex) {
            System.err.println("error opening file to save!"); //$NON-NLS-1$
            System.err.println(ex);
        }
    }

    /**
     * Saves the board in PNG image format.
     */
    private void boardSaveImage() {
        if (curfileImage == null) {
            boardSaveAsImage();
            return;
        }
        JDialog waitD = new JDialog(frame, Messages
                .getString("BoardEditor.waitDialog.title")); //$NON-NLS-1$
        waitD.add(new JLabel(Messages
                .getString("BoardEditor.waitDialog.message"))); //$NON-NLS-1$
        waitD.setSize(250, 130);
        // move to middle of screen
        waitD.setLocation(
                frame.getSize().width / 2 - waitD.getSize().width / 2, frame
                        .getSize().height
                        / 2 - waitD.getSize().height / 2);
        waitD.setVisible(true);
        frame.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        waitD.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        // save!
        int filter = 0; // 0 - no filter; 1 - sub; 2 - up
        int compressionLevel = 9; // 0 to 9 with 0 being no compression
        PngEncoder png = new PngEncoder(bv.getEntireBoardImage(),
                PngEncoder.NO_ALPHA, filter, compressionLevel);
        try {
            FileOutputStream outfile = new FileOutputStream(curfileImage);
            byte[] pngbytes;
            pngbytes = png.pngEncode();
            if (pngbytes == null) {
                System.out.println("Failed to save board as image:Null image"); //$NON-NLS-1$
            } else {
                outfile.write(pngbytes);
            }
            outfile.flush();
            outfile.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        waitD.setVisible(false);
        frame.setCursor(Cursor.getDefaultCursor());
    }

    /**
     * Opens a file dialog box to select a file to save as; saves the board to
     * the file.
     */
    private void boardSaveAs() {
        JFileChooser fc = new JFileChooser("data" + File.separator + "boards");
        fc
                .setLocation(frame.getLocation().x + 150,
                        frame.getLocation().y + 100);
        fc.setDialogTitle(Messages.getString("BoardEditor.saveBoardAs"));
        fc.setFileFilter(new FileFilter() {
            @Override
            public boolean accept(File dir) {
                return null != dir.getName()
                        && dir.getName().endsWith(".board"); //$NON-NLS-1$
            }

            @Override
            public String getDescription() {
                return ".board";
            }
        });
        int returnVal = fc.showSaveDialog(frame);
        if (returnVal != JFileChooser.APPROVE_OPTION
                || fc.getSelectedFile() == null) {
            // I want a file, y'know!
            return;
        }
        curfile = fc.getSelectedFile();

        // make sure the file ends in board
        if (!curfile.getName().toLowerCase().endsWith(".board")) { //$NON-NLS-1$
            try {
                curfile = new File(curfile.getCanonicalPath() + ".board"); //$NON-NLS-1$
            } catch (IOException ie) {
                // failure!
                return;
            }
        }
        frame.setTitle(Messages.getString("BoardEditor.title0") + curfile); //$NON-NLS-1$
        boardSave();
    }

    /**
     * Opens a file dialog box to select a file to save as; saves the board to
     * the file as an image. Useful for printing boards.
     */
    private void boardSaveAsImage() {
        JFileChooser fc = new JFileChooser(".");
        fc
                .setLocation(frame.getLocation().x + 150,
                        frame.getLocation().y + 100);
        fc.setDialogTitle(Messages.getString("BoardEditor.saveAsImage"));
        fc.setFileFilter(new FileFilter() {
            @Override
            public boolean accept(File dir) {
                return null != dir.getName() && dir.getName().endsWith(".png"); //$NON-NLS-1$
            }

            @Override
            public String getDescription() {
                return ".png";
            }
        });
        // Default to the board's name (if it has one).
        String fileName;
        if (curfile != null && curfile.length() > 0) {
            fileName = curfile.getName().toUpperCase();
            if (fileName.endsWith(".BOARD")) { //$NON-NLS-1$
                int length = fileName.length();
                fileName = fileName.substring(0, length - 6);
            }
            fileName = fileName.toLowerCase() + ".png"; //$NON-NLS-1$
            fc.setSelectedFile(new File(fileName));
        }
        int returnVal = fc.showSaveDialog(frame);
        if (returnVal != JFileChooser.APPROVE_OPTION
                || fc.getSelectedFile() == null) {
            // I want a file, y'know!
            return;
        }
        curfileImage = fc.getSelectedFile();

        // make sure the file ends in png
        if (!curfileImage.getName().toLowerCase().endsWith(".png")) { //$NON-NLS-1$
            try {
                curfileImage = new File(curfileImage.getCanonicalPath()
                        + ".png"); //$NON-NLS-1$
            } catch (IOException ie) {
                // failure!
                return;
            }
        }
        frame.setTitle(Messages.getString("BoardEditor.title0") + curfileImage); //$NON-NLS-1$
        boardSaveImage();
    }

    //
    // ItemListener
    //
    public void itemStateChanged(ItemEvent ie) {
        if (ie.getSource().equals(cheRoadsAutoExit)) {
            // Set the new value for the option, and refrest the board.
            board.setRoadsAutoExit(cheRoadsAutoExit.isSelected());
            bv.updateBoard();
            repaintWorkingHex();
        }
    }

    //
    // TextListener
    //
    public void changedUpdate(DocumentEvent te) {
        if (te.getDocument().equals(texElev.getDocument())) {
            int value;
            try {
                value = Integer.parseInt(texElev.getText());
            } catch (NumberFormatException ex) {
                return;
            }
            if (value != curHex.getElevation()) {
                curHex.setElevation(value);
                repaintWorkingHex();
            }
        } else if (te.getDocument().equals(texTheme.getDocument())) {
            curHex.setTheme(texTheme.getText());
            repaintWorkingHex();
        }
    }

    /**
     * Called when the user selects the "Help->About" menu item.
     */
    private void showAbout() {
        // Do we need to create the "about" dialog?
        if (about == null) {
            about = new CommonAboutDialog(frame);
        }

        // Show the about dialog.
        about.setVisible(true);
    }

    /**
     * Called when the user selects the "Help->Contents" menu item.
     */
    private void showHelp() {
        // Do we need to create the "help" dialog?
        if (help == null) {
            File helpfile = new File("docs", "editor-readme.txt"); //$NON-NLS-1$
            help = new CommonHelpDialog(frame, helpfile);
        }

        // Show the help dialog.
        help.setVisible(true);
    }

    /**
     * Called when the user selects the "View->Client Settings" menu item.
     */
    private void showSettings() {
        // Do we need to create the "settings" dialog?
        if (setdlg == null) {
            setdlg = new CommonSettingsDialog(frame);
        }

        // Show the settings dialog.
        setdlg.setVisible(true);
    }

    //
    // ActionListener
    //
    public void actionPerformed(ActionEvent ae) {
        if ("fileBoardNew".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            boardNew();
        } else if ("fileBoardOpen".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            boardLoad();
        } else if ("fileBoardSave".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            boardSave();
        } else if ("fileBoardSaveAs".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            boardSaveAs();
        } else if ("fileBoardSaveAsImage".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            boardSaveAsImage();
        } else if (ae.getSource().equals(butDelTerrain)
                && lisTerrain.getSelectedValue() != null) {
            ITerrain toRemove = Terrains.getTerrainFactory().createTerrain(
                    (String) lisTerrain.getSelectedValue());
            curHex.removeTerrain(toRemove.getType());
            refreshTerrainList();
            repaintWorkingHex();
        } else if (ae.getSource().equals(butAddTerrain)) {
            addSetTerrain();
        } else if (ae.getSource().equals(butElevUp)
                && curHex.getElevation() < 9) {
            curHex.setElevation(curHex.getElevation() + 1);
            texElev.setText(Integer.toString(curHex.getElevation()));
            repaintWorkingHex();
        } else if (ae.getSource().equals(butElevDown)
                && curHex.getElevation() > -5) {
            curHex.setElevation(curHex.getElevation() - 1);
            texElev.setText(Integer.toString(curHex.getElevation()));
            repaintWorkingHex();
        } else if (ae.getSource().equals(butTerrExits)) {
            ExitsDialog ed = new ExitsDialog(frame);
            cheTerrExitSpecified.setSelected(true);
            ed.setExits(Integer.parseInt(texTerrExits.getText()));
            ed.setVisible(true);
            texTerrExits.setText(Integer.toString(ed.getExits()));
            addSetTerrain();
        } else if ("viewMiniMap".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            toggleMap();
        } else if ("helpAbout".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            showAbout();
        } else if ("helpContents".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            showHelp();
        } else if ("viewClientSettings".equalsIgnoreCase(ae.getActionCommand())) { //$NON-NLS-1$
            showSettings();
        }
    }

    public void insertUpdate(DocumentEvent event) {
        changedUpdate(event);
    }

    public void removeUpdate(DocumentEvent event) {
        changedUpdate(event);
    }

    public void valueChanged(ListSelectionEvent event) {
        if (event.getSource().equals(lisTerrain)) {
            refreshTerrainFromList();
        }
    }

    /**
     * Displays the currently selected hex picture, in component form
     */
    private class HexCanvas extends JPanel {
        /**
         *
         */
        private static final long serialVersionUID = 3201928357525361191L;

        HexCanvas() {
            setPreferredSize(new Dimension(90, 90));
        }

        @Override
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            if (curHex != null) {
                TilesetManager tm = bv.getTilesetManager();
                g.drawImage(tm.baseFor(curHex), 0, 0, this);
                g.setColor(getForeground());
                if (tm.supersFor(curHex) != null) {
                    for (final Object newVar : tm.supersFor(curHex)) {
                        g.drawImage((Image) newVar, 0, 0, this);
                        g.drawString(
                                Messages.getString("BoardEditor.SUPER"), 0, 10); //$NON-NLS-1$
                    }
                }
                g.setFont(new Font("SansSerif", Font.PLAIN, 9)); //$NON-NLS-1$
                g
                        .drawString(
                                Messages.getString("BoardEditor.LEVEL") + curHex.getElevation(), 24, 70); //$NON-NLS-1$
            } else {
                g.clearRect(0, 0, 72, 72);
            }
        }
    }

    /**
     * @return the frame this is displayed in
     */
    public JFrame getFrame() {
        return frame;
    }

    /**
     * Toggles the minimap window Also, toggles the minimap enabled setting
     */
    private void toggleMap() {
        setMapVisible(!minimapW.isVisible());
    }

    void setMapVisible(boolean visible) {
        minimapW.setVisible(visible);
    }
}
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