/** * @(#)LocalScrabble.java 11/03/05 * * Copyright 2005 3GP01, KCL. All unmodified code is copyright of its respective owner. * * 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. * * The GNU General Public Licence should be contained within licence.txt; * if not, write to the Free Software Foundation, Inc., 51 Franklin Street, * Fifth Floor, Boston, MA 02110-1301, USA. */ import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Cursor; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.PrintWriter; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.ResourceBundle; import javax.swing.BorderFactory; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JProgressBar; import javax.swing.SwingConstants; import javax.swing.Timer; import javax.swing.border.Border; /** * LocalScrabble describes the player's GUI interface for the local Scrabble game. * All action listeners are defined. The Scrabble game is i18n-ed. * All methods in LocalScrabble relate to how the user interacts with the GUI. * All game related methods are contained within different classes, notably Game * and ScrabbleBuilder. * * @author 3GP01 - Hardev Bhamra, Deepak Chandarana, James Tompkin * @version 2.0 * @see Game * @see ScrabbleBuilder * */ /* Swing is not natively slow, however it is the java look and feel's response that is slow. * This is due to the existing code's ActionListener code, which we mostly left intact. * Need to clean up the action listeners, factor out into their own threads * so that swing may repaint the display and provide user feedback more frequently. * Using a 'windows' l&f gives the appearance of a speeded up GUI, however this l&f is * unacceptable for use, as it is not cross-platform. * * Also, certain methods, such as g.endMove(), are particularly slow to repaint * due to their intensive nature. Not having the time to rewrite the code but having enough time * to see slow implementations has been frustrating (see Board.clone() to find the scores). */ public class LocalScrabble extends JFrame implements ActionListener { static LocalScrabble window; private Timer timer; //a timer that will generate events private boolean timerRunning; // while the stopwatch is running private long startTime; //start time of timer, in milliseconds String languageForGUI = Dictionary.langForGUI; //use for output of current language for GUI use ResourceBundle messages = getScrabble().getI18n() .getCurrentResourceBundle(); //localisation message bundle JPanel boardPanel = new JPanel(); JPanel rackPanel = new JPanel(); JPanel resultsPanel = new JPanel(); JButton moveButton = new JButton(messages.getString("moveButton")); JButton resetMoveButton = new JButton(messages.getString("resetMoveButton")); JButton endMoveButton = new JButton(messages.getString("endMoveButton")); JButton hintMoveButton = new JButton(messages.getString("hintMoveButton")); JButton swapLettersButton = new JButton(messages .getString("swapLettersButton")); JButton skipTurnButton = new JButton(messages.getString("skipTurnButton")); JButton startGameButton = new JButton(messages.getString("startGameButton")); JButton addPlayerButton = new JButton(messages.getString("addPlayerButton")); JButton endGameButton = new JButton(messages.getString("endGameButton")); JButton helpButton = new JButton(messages.getString("helpButton")); JButton[][] boardButtons = new JButton[15][15]; JButton[] rackButtons = new JButton[7]; JButton[][] resultsRackDisplay = new JButton[4][7]; Map xcoord = new HashMap(); // JButton --> Integer Map ycoord = new HashMap(); // JButton --> Integer JLabel[] resultLabels = new JLabel[5]; JLabel bagLabel; JLabel playerLabel = new JLabel(messages.getString("playerLabelNoPlayers")); JLabel messageLine = new JLabel(); //line for outputting text to user, attached to bottom of window, use messageLine.setText("..."); JProgressBar progressBar; //animated progress bar. Game g; List history = new ArrayList(); // of Move List swapLetters = new ArrayList(); //new list containing all selected swap letters Move currentMove; Letter current = null; int numberOfPlayers = 0; int lastRack = -1; // current != null => lastRack: 0..7 boolean gameInProgress = false; boolean moveInProgress = false; boolean rackClicked = false; boolean swapClicked = false; Color ivory = new Color(254, 254, 229); Color darkIvory = new Color(252, 252, 173); Color turquoise = new Color(1, 51, 52); Color lightTurquoise = new Color(0, 102, 102); Color orange = new Color(255, 102, 0); Border pad1 = BorderFactory.createMatteBorder(5, 17, 5, 17, ivory); Border pad2 = BorderFactory.createMatteBorder(2, 0, 2, 0, ivory); Border outlineBorder = BorderFactory.createEtchedBorder(Color.WHITE, Color.GRAY); Border border = BorderFactory.createCompoundBorder(outlineBorder, pad1); Border border2 = BorderFactory.createCompoundBorder(outlineBorder, pad2); //define icons for use throughout game // ImageIcon letter = new ImageIcon("resources/images/tiles/letter/letter.png"); ImageIcon letterdisabled = new ImageIcon("resources/images/tiles/letter/letterdisabled.png"); ImageIcon letterpressed = new ImageIcon("resources/images/tiles/letter/letterpressed.png"); ImageIcon letterrollover = new ImageIcon("resources/images/tiles/letter/letterrollover.png"); /** * Gets the current Scrabble game. * * @return Scrabble */ public Scrabble getScrabble() { return Scrabble.scrabble; } /** * LocalScrabble creates and initialises a game, ready to accept response from user. */ public LocalScrabble() { getScrabble().arithNumberOfWindows("++"); //increase the number of open windows //$NON-NLS-1$ getScrabble().incrementNumberOfGamesPlayed(); //increase the number of games played setMessageLine(" " + messages.getString("messageLineIntro") + languageForGUI + messages.getString("scrabble.14")); //$NON-NLS-2$ //$NON-NLS-3$ if (getScrabble().i18n.language.equals("ru")) setTitle(messages.getString("scrabbleWindowTitle") + " " + getScrabble().getNumberOfGamesPlayed() + "\u044F"); else setTitle(messages.getString("scrabbleWindowTitle") + getScrabble().getNumberOfGamesPlayed()); //set tooltips moveButton.setToolTipText(messages.getString("scrabble.16")); //$NON-NLS-1$ resetMoveButton.setToolTipText(messages.getString("scrabble.17")); //$NON-NLS-1$ endMoveButton.setToolTipText(messages.getString("scrabble.18")); //$NON-NLS-1$ swapLettersButton.setToolTipText(messages.getString("scrabble.19")); //$NON-NLS-1$ skipTurnButton.setToolTipText(messages.getString("scrabble.20")); //$NON-NLS-1$ startGameButton.setToolTipText(messages.getString("scrabble.21")); //$NON-NLS-1$ addPlayerButton.setToolTipText(messages.getString("scrabble.22")); //$NON-NLS-1$ endGameButton.setToolTipText(messages.getString("scrabble.23")); //$NON-NLS-1$ hintMoveButton.setToolTipText(messages.getString("scrabble.24")); //$NON-NLS-1$ helpButton.setToolTipText(messages.getString("scrabble.25")); //$NON-NLS-1$ //Mnemonics of buttons moveButton.setMnemonic(KeyEvent.VK_M); resetMoveButton.setMnemonic(KeyEvent.VK_R); endMoveButton.setMnemonic(KeyEvent.VK_E); hintMoveButton.setMnemonic(KeyEvent.VK_H); swapLettersButton.setMnemonic(KeyEvent.VK_W); skipTurnButton.setMnemonic(KeyEvent.VK_P); startGameButton.setMnemonic(KeyEvent.VK_S); addPlayerButton.setMnemonic(KeyEvent.VK_A); endGameButton.setMnemonic(KeyEvent.VK_G); helpButton.setMnemonic(KeyEvent.VK_H); g = new Game(getScrabble().getScrabbleBuilder()); boardPanel.setDoubleBuffered(true); //should reduce flickering on the board numberOfPlayers = 0; //changed with addition of Start Game button JPanel boardResultsPanel = new JPanel(); boardResultsPanel.setLayout(new BoxLayout(boardResultsPanel, BoxLayout.X_AXIS)); GridLayout gl = new GridLayout(15, 15, 0, 0); gl.preferredLayoutSize(boardPanel); boardPanel.setLayout(gl); boardPanel.setBorder(BorderFactory.createLineBorder(darkIvory, 2)); //spacer boardResultsPanel.add(Box.createRigidArea(new Dimension(10, 10))); //add the board addSquares(); boardPanel.setAlignmentY(Component.TOP_ALIGNMENT); boardResultsPanel.add(boardPanel); //spacer boardResultsPanel.add(Box.createRigidArea(new Dimension(10, 10))); boardResultsPanel.add(Box.createHorizontalGlue()); //add the results addResults(); resultsPanel.setAlignmentY(Component.TOP_ALIGNMENT); boardResultsPanel.add(resultsPanel); //spacer boardResultsPanel.add(Box.createRigidArea(new Dimension(10, 0))); addRack(); //logo bar JPanel logoBar = new JPanel(); logoBar.setLayout(new BoxLayout(logoBar, BoxLayout.X_AXIS)); JLabel logo = new JLabel(new ImageIcon( "resources/images/scrabblelogo.png")); //$NON-NLS-1$ logoBar.add(Box.createRigidArea(new Dimension(10, 40))); logoBar.add(logo); //southPanel for info to user progressBar = new JProgressBar(); progressBar.setStringPainted(true); //get space for the string progressBar.setString(""); //paint with 'please wait' //$NON-NLS-1$ progressBar.setIndeterminate(false); //makes progressbar indeterminate, ie constantly moving, no time/task constraints JPanel southPanel = new JPanel(); //south panel for progress bar/message line southPanel.setLayout(new BoxLayout(southPanel, BoxLayout.X_AXIS)); southPanel.add(messageLine); messageLine.setAlignmentX(Component.LEFT_ALIGNMENT); southPanel.add(Box.createHorizontalGlue()); //stretchy glue box segment that keeps messageLine and progressBar apart southPanel.add(progressBar); southPanel.add(Box.createRigidArea(new Dimension(5, 0))); southPanel.add(helpButton); helpButton.addActionListener(this); progressBar.setAlignmentX(Component.RIGHT_ALIGNMENT); progressBar.setPreferredSize(new Dimension(216, 18)); progressBar.setMaximumSize(new Dimension(300, 18)); southPanel.add(Box.createRigidArea(new Dimension(10,0))); getContentPane().setLayout( new BoxLayout(getContentPane(), BoxLayout.Y_AXIS)); logoBar.setAlignmentX(Component.LEFT_ALIGNMENT); boardResultsPanel.setAlignmentX(Component.LEFT_ALIGNMENT); rackPanel.setAlignmentX(Component.LEFT_ALIGNMENT); southPanel.setAlignmentX(Component.LEFT_ALIGNMENT); //if we need to ration our height, then take off the logo, because it is not functional if (!getScrabble().isHeightChangesNecessary()) getContentPane().add(logoBar); getContentPane().add(boardResultsPanel); getContentPane().add(rackPanel); getContentPane().add(southPanel); setButtonStates(false, false, false, false, false, false); startGameButton.setEnabled(false); endGameButton.setEnabled(false); this.getRootPane().setDefaultButton(addPlayerButton); this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); //default close operation this.setResizable(false); addWindowListener(new WindowAdapter() { //SCRABBLE92 //Fix for lack of prompt to save history public void windowClosing(WindowEvent e) { JFrame frame = null; Object[] options = {messages.getString("yes"), messages.getString("no"), messages.getString("cancel") }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ int n = JOptionPane .showOptionDialog(frame, messages .getString("saveRequest"), //$NON-NLS-1$ messages.getString("saveRequestTitle"), //$NON-NLS-1$ JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]); if (n == JOptionPane.YES_OPTION) //if want to save, run filechooser { saveDataToFile(); } else if (n == JOptionPane.CANCEL_OPTION) //cancel dialog, return to scrabble { } else if (n == JOptionPane.NO_OPTION) //quit { dispose(); getScrabble().arithNumberOfWindows("--"); //$NON-NLS-1$ if (getScrabble().getNumberOfWindows() == 0) { System.exit(0); } } } }); } private void addSquares() //construct the board from squares iteratively { for (int j = 0; j < 15; j++) { for (int i = 0; i < 15; i++) { Square sq = g.getSquare(i, j); JButton jb = new JButton(sq.getIcon(sq.getColor())); //jb.setToolTipText(sq.getDescription()); //tool tips for the board jb.setVerticalTextPosition(SwingConstants.CENTER); //set text to be over the icon jb.setHorizontalTextPosition(SwingConstants.CENTER);//set text to be over the icon jb.setRolloverIcon(sq.getRolloverIcon(sq.getColor())); jb.setPressedIcon(sq.getPressedIcon(sq.getColor())); jb.setBorder(BorderFactory.createLineBorder(darkIvory, 2)); //set border jb.setBackground(g.getSquare(i, j).getColor()); //get background colour jb.setForeground(Color.BLACK); //set text colour jb.addActionListener(this); xcoord.put(jb, new Integer(i)); ycoord.put(jb, new Integer(j)); boardButtons[i][j] = jb; boardPanel.add(jb); } } } private void addRack() { JPanel functionButtonsPanel = new JPanel(); functionButtonsPanel.setLayout(new BoxLayout(functionButtonsPanel, BoxLayout.X_AXIS)); functionButtonsPanel.add(moveButton); functionButtonsPanel.add(resetMoveButton); functionButtonsPanel.add(hintMoveButton); functionButtonsPanel.add(swapLettersButton); functionButtonsPanel.add(skipTurnButton); functionButtonsPanel.add(endMoveButton); moveButton.addActionListener(this); resetMoveButton.addActionListener(this); hintMoveButton.addActionListener(this); swapLettersButton.addActionListener(this); skipTurnButton.addActionListener(this); endMoveButton.addActionListener(this); JPanel rackButtonsPanel = new JPanel(); rackButtonsPanel.setDoubleBuffered(true); rackButtonsPanel.setLayout(new BoxLayout(rackButtonsPanel, BoxLayout.X_AXIS)); rackButtonsPanel.setMaximumSize(new Dimension(280, 40)); for (int i = 0; i < 7; i++) { JButton jb = new JButton("-"); //$NON-NLS-1$ xcoord.put(jb, new Integer(i)); jb.addActionListener(this); rackButtons[i] = jb; rackButtonsPanel.add(jb); jb.setEnabled(false); jb.setBackground(turquoise); jb.setIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setDisabledIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setRolloverIcon(letterrollover); //new ImageIcon("resources/images/tiles/letter/letterrollover.png")); //$NON-NLS-1$ jb.setPressedIcon(letterpressed); //new ImageIcon("resources/images/tiles/letter/letterpressed.png")); //$NON-NLS-1$ //jb.setSelectedIcon(new ImageIcon("resources/images/tiles/letter/letterpressed.png")); //$NON-NLS-1$ jb.setVerticalTextPosition(SwingConstants.CENTER); jb.setHorizontalTextPosition(SwingConstants.CENTER); jb.setBorder(null); //v. important - tells UIManager not to display custom button UI rollover jb.setForeground(Color.BLACK); } rackPanel.setLayout(new BoxLayout(rackPanel, BoxLayout.X_AXIS)); //if screen height is rationed, dont add vertical spacer if (getScrabble().isHeightChangesNecessary()) { rackPanel.add(Box.createRigidArea(new Dimension(10, 0))); } //spacer at left edge to add horizontal separation else { rackPanel.add(Box.createRigidArea(new Dimension(10, 50))); } //spacer at left edge to add horizontal/vertical separation rackPanel.add(functionButtonsPanel); rackPanel.add(Box.createHorizontalGlue()); rackPanel.add(playerLabel); rackPanel.add(Box.createHorizontalGlue()); rackPanel.add(rackButtonsPanel); rackPanel.add(Box.createRigidArea(new Dimension(10, 0))); //spacer at right edge to add horizontal separation } private void addResults() { resultsPanel.setLayout(new BoxLayout(resultsPanel, BoxLayout.Y_AXIS)); JPanel buttPanel = new JPanel(); buttPanel.setLayout(new BoxLayout(buttPanel, BoxLayout.X_AXIS)); buttPanel.setAlignmentX(Component.LEFT_ALIGNMENT); buttPanel.add(startGameButton); startGameButton.addActionListener(this); buttPanel.add(addPlayerButton); addPlayerButton.addActionListener(this); buttPanel.add(endGameButton); endGameButton.addActionListener(this); resultsPanel.add(buttPanel); resultsPanel.add(Box.createVerticalGlue()); for (int i = 0; i < 4; i++) { //label for name JLabel jl = new JLabel(messages.getString("addPlayerButton")); //$NON-NLS-1$ jl.setAlignmentX(Component.LEFT_ALIGNMENT); resultLabels[i] = jl; resultsPanel.add(jl); resultsPanel.add(Box.createRigidArea(new Dimension(0, 5))); //panel for results display rack JPanel panel = new JPanel(); panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS)); panel.setAlignmentX(Component.LEFT_ALIGNMENT); panel.setMaximumSize(new Dimension(280, 40)); panel.add(Box.createHorizontalGlue()); //add row of buttons under player's nam/score to show racks of player for (int j = 0; j < 7; j++) { final JButton jb = new JButton("-"); //$NON-NLS-1$ xcoord.put(jb, new Integer(j)); resultsRackDisplay[i][j] = jb; jb.setEnabled(false); jb.setBackground(turquoise); jb.setForeground(Color.GRAY); jb.setIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setDisabledIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setVerticalTextPosition(SwingConstants.CENTER); jb.setHorizontalTextPosition(SwingConstants.CENTER); jb.setBorder(null); jb.setVisible(false); panel.add(jb); } panel.add(Box.createHorizontalGlue()); resultsPanel.add(panel); //resultsPanel.add(Box.createRigidArea(new Dimension(0,5))); resultsPanel.add(Box.createVerticalGlue()); } bagLabel = new JLabel(""); //$NON-NLS-1$ //resultsPanel.add(Box.createRigidArea(new Dimension(0, 10))); resultLabels[4] = bagLabel; bagLabel.setAlignmentX(Component.LEFT_ALIGNMENT); resultsPanel.add(bagLabel); resultsPanel.add(Box.createVerticalGlue()); } /** * Updates the board, refreshes each button's icon and text. * This method also refreshes the active rack and the results panel. * */ private void updateDisplay() { for (int i = 0; i < 15; i++) { for (int j = 0; j < 15; j++) { Square sq = g.getSquare(i, j); JButton jb = boardButtons[i][j]; jb.setText(sq.getText().toUpperCase()); if (sq.isOccupied()) { jb.setEnabled(false); jb.setIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setDisabledIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb.setBackground(ivory); } else { jb.setIcon(sq.getIcon(sq.getColor())); jb.setText(null); jb.setBackground(sq.getColor()); jb.setEnabled(true); } } } Rack r = g.getRack(); updateRack(rackButtons, r); updateResults(); } /** * Updates the results panel. * If a game is not in progress, player labels are set to "Add Player" to show * the user that more players can be added. Once the game is started, these * label slots appear to be 'closed'. * */ private void updateResults() { List players = g.getPlayers(); int numPlayers = players.size(); String skipsDisplay; for (int i = 0; i < numPlayers; i++) { Player p = (Player) players.get(i); //special consideration for russian if (getScrabble().i18n.language.equals("ru")) { skipsDisplay = (messages.getString("scrabble.1") + (2 - p.getSkipCounter()) + messages.getString("scrabble.4")); if (p.getSkipCounter() == 1) //if a player only has one skip left { skipsDisplay = (messages.getString("scrabble.2") + (2 - p.getSkipCounter()) + messages.getString("scrabble.5")); } if (p.getSkipCounter() >= 2) { skipsDisplay = messages.getString("scrabble.3"); } } else { skipsDisplay = (2 - p.getSkipCounter()) + messages.getString("scrabble.1"); if (p.getSkipCounter() == 1) //if a player only has one skip left { skipsDisplay = (2 - p.getSkipCounter()) + messages.getString("scrabble.2"); } if (p.getSkipCounter() >= 2) { skipsDisplay = messages.getString("scrabble.3"); } } resultLabels[i].setText( p.getName() + " " + p.getScore() + messages.getString("scrabble.48") + " " + skipsDisplay); //$NON-NLS-1$ //$NON-NLS-2$ for (int j = 0; j < 7; j++) { resultsRackDisplay[i][j].setVisible(true); } } if (gameInProgress) //should blank out unneeded player labels once in game { for (int i = numPlayers; i < 5; i++) { resultLabels[i].setText(""); //$NON-NLS-1$ bagLabel.setText(g.getBagSize() + messages.getString("scrabble.50")); //$NON-NLS-1$ } } else { for (int i = numPlayers; i < 5; i++) //until game has started, show player slots { resultLabels[i].setText(messages.getString("addPlayerButton")); //$NON-NLS-1$ bagLabel.setText(""); //$NON-NLS-1$ if (g.getPlayers().size() == 1) playerLabel.setText(messages.getString("scrabble.53")); //$NON-NLS-1$ else playerLabel.setText(g.getPlayers().size() + messages.getString("scrabble.55")); //$NON-NLS-1$ //$NON-NLS-2$ } } } /** * Updates a results rack of a player of a turn. * * @param r The results rack to be updated. * @param turn The turn of the player. */ private void updateResultsRack(Rack r, int turn) { for (int i = 0; i < r.getRackSize(); i++) { Letter lt = r.getLetter(i); if (lt.isBlank()) { resultsRackDisplay[turn][i].setText(" "); //$NON-NLS-1$ } else { resultsRackDisplay[turn][i] .setText("" + Character.toUpperCase(lt.getSymbol()) + " _{" + lt.getScore() + "}"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } } for (int i = r.getRackSize(); i < 7; i++) { resultsRackDisplay[turn][i].setText("-"); } } /** * Method to update the status of individual buttons in the rack. * Primarily used to update the display when the user 'clicks around the rack'. * * @param i The index location in the rack of a specific button. * @param r The rack to update. */ private void updateRackButton(int i, Rack r) { Letter lt = r.getLetter(i); if (lt.isBlank()) { lt.resetBlank(); //reset symbol of letter to be blank rackButtons[i].setText(" "); //$NON-NLS-1$ } else { rackButtons[i] .setText("" + Character.toUpperCase(lt.getSymbol()) + " _{" + lt.getScore() + "}"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } //rackButtons[i].setToolTipText(messages.getString("scrabble.64") + lt.getScore()); //$NON-NLS-1$ } /** * Updates a desired rack. * * @param rackButtons The rack of buttons to update, usually the 'control rack'. * @param r The player's Rack to update. */ private void updateRack(JButton[] rackButtons, Rack r) { int i; for (i = 0; i < r.getRackSize(); i++) { Letter lt = r.getLetter(i); if (lt.isBlank()) { lt.resetBlank(); //reset symbol of letter to be blank rackButtons[i].setText(" "); //$NON-NLS-1$ } else { rackButtons[i].setText("" + Character.toUpperCase(lt.getSymbol()) + " _{" + lt.getScore() + "}"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } //rackButtons[i].setToolTipText(messages.getString("scrabble.64") + lt.getScore()); //$NON-NLS-1$ rackButtons[i].setForeground(Color.BLACK); rackButtons[i].setEnabled(true); } for (; i < 7; i++) { rackButtons[i].setText("-"); //$NON-NLS-1$ rackButtons[i].setEnabled(false); } } /** * Resets the display of the 'control rack'. * */ private void clearRack() { for (int i = 0; i < 7; i++) { rackButtons[i].setText("-"); //$NON-NLS-1$ rackButtons[i].setEnabled(false); } } /* (non-Javadoc) * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ public void actionPerformed(ActionEvent e) { Object eventSource = e.getSource(); if (eventSource instanceof JButton) { JButton cb = (JButton) eventSource; String command = cb.getText(); if (command != null) { if (command.equals(messages.getString("startGameButton"))) //$NON-NLS-1$ { if (numberOfPlayers < 1) { JFrame frame = null; JOptionPane.showMessageDialog(frame, messages .getString("scrabble.73")); //$NON-NLS-1$ } else { gameInProgress = true; setRacksAtStartOfGame(); g.setRandomTurn(); //randomly selects a player to go first if (getScrabble().i18n.language.equals("ru")) playerLabel.setText(messages.getString("scrabble.75") + g.getPlayer().getName()); //$NON-NLS-1$ //$NON-NLS-2$ else playerLabel.setText(g.getPlayer().getName() + messages.getString("scrabble.75")); //$NON-NLS-1$ //$NON-NLS-2$ //verbose displaying of whose turn it is setMessageLine(g.getPlayer().getName() + messages.getString("scrabble.77")); //$NON-NLS-1$ //$NON-NLS-2$ updateResults(); //updates player labels cb.setEnabled(false); addPlayerButton.setEnabled(false); moveButton.setEnabled(true); endGameButton.setEnabled(true); } } if (command.equals(messages.getString("endGameButton"))) //$NON-NLS-1$ { if (moveInProgress) //if a move is in progress, timer will be going, timerControl(e); //so stop the timer setButtonStates(false, false, false, false, false, false); endGameButton.setEnabled(false); gameInProgress = false; g.gameEnd(); } if (command.equals(messages.getString("helpButton"))) //$NON-NLS-1$ { HelpSystem.createAndShowHS(); } if (command.equals(messages.getString("hintMoveButton"))) //$NON-NLS-1$ { Cursor cur_wait = new Cursor(Cursor.WAIT_CURSOR); //if computer player is moving, put a waiting cursor setCursor(cur_wait); Move mv = null; if (!g.board.getSquare(7, 7).isOccupied()) { FirstMoveStrategy ss = new FirstMoveStrategy(); mv = ss.generateMove(g); } else { CompositeMoveStrategy pms = new CompositeMoveStrategy(); mv = pms.generateMove(g); } if (mv == null) { setMessageLine(messages.getString("scrabble.81")); //$NON-NLS-1$ } else { List letterMoves = mv.getLetterMoves(); boolean[] alreadySwapped = {false, false, false, false, false, false, false}; //show this move on the player's rack for (int i = 0; i < letterMoves.size(); i++) { /*get first letter of letter move *compare with rack, find index of first instance of letter move in rack *swap the first letter in the rack with the letter at the index of the rack *update individual rack buttons */ LetterMove lm = (LetterMove) letterMoves.get(i); int index = g.getRack().getIndexOfLetter(lm.getLetter()); //if letter has already been swapped, skip it (as it doesnt need to be swapped again) if(alreadySwapped[index] == true) { } else { //swap letter at i with lettermove letter //if letter is a blank, swap with a blank letter instead Letter letterSelected = lm.getLetter(); //get letter at index i Letter letterToSwap = g.getRack().getLetter(i); if (letterSelected.isBlank()) { letterSelected = g.getRack().getLetter(index); } g.getRack().setLetter(i, letterSelected); //swap letter at index with letter at i g.getRack().setLetter(index, letterToSwap); updateRackButton(i, g.getRack()); updateRackButton(index, g.getRack()); alreadySwapped[i] = true; } } } hintMoveButton.setEnabled(false); Cursor cur_default = new Cursor(Cursor.DEFAULT_CURSOR); //restore cursor to default setCursor(cur_default); } if (command.equals(messages.getString("addPlayerButton"))) //$NON-NLS-1$ { boolean uniqueNames = true; //SCRABBLE224 //Fix for bad input of computer/human //Fix for non-unique names leading to player confusion //computer or human String corh = null; //dialog box for selecting whether a player should be human or computer Object[] options = {messages.getString("scrabble.83"), messages.getString("scrabble.84") }; //uses a modified YES/NO box with custom labels //$NON-NLS-1$ //$NON-NLS-2$ int n = JOptionPane.showOptionDialog(null, messages .getString("scrabble.85"), //$NON-NLS-1$ messages.getString("scrabble.86"), //$NON-NLS-1$ JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]); if (n == JOptionPane.YES_OPTION) { corh = "H";} //Computer option //$NON-NLS-1$ else if (n == JOptionPane.NO_OPTION) { corh = "C";} //Human option //$NON-NLS-1$ //name of player, has to be unique String name = null; boolean nonNullName = false; while (!nonNullName) //loop to keep name from not being null { name = JOptionPane.showInputDialog(messages .getString("scrabble.89")); //ask for name //$NON-NLS-1$ if ((null == name)) //effectively, this equates to the user pressing 'cancel' or 'close', in which case break the loop and end the name request { break; } else if (name.equals("") || name.equals("*")) //if the player presses ok without entering any name, string 'name' is set to "" (or "*" for computer player) - this is unacceptable, so we test for it here //$NON-NLS-1$ //$NON-NLS-2$ { nonNullName = false; } else if (name.length() > 20) { nonNullName = false; JOptionPane.showMessageDialog(null, messages .getString("scrabble.92")); //$NON-NLS-1$ } else //if a valid name has been entered, set the flag and end the loop { nonNullName = true; } } if (corh.equals("C")) //affix star to end of name if player is computer //$NON-NLS-1$ { name = "*" + name;} //this differentiates between computer and human players //$NON-NLS-1$ List players = g.getPlayers(); //gets list of players int numPlayers = players.size(); //gets size of list of players for (int i = 0; i < numPlayers; i++) //for each player { Player p = (Player) players.get(i); //get player info if (p.getName().equals(name)) //if name of player equals name being entered, { JOptionPane.showMessageDialog(null, messages .getString("scrabble.95")); //show dialog //$NON-NLS-1$ uniqueNames = false; //non unique name } } //if all names are unique (ie no flag has been raised), then add player //needs to check if no names are null so that if the player cancels at the //enter name stage, it doesnt add a player with no name if (uniqueNames && nonNullName) { g.addPlayer(name, corh); //add player numberOfPlayers++; //increment the number of players in the game if (numberOfPlayers >= 1) { startGameButton.setEnabled(true); } if (numberOfPlayers >= 4) { cb.setEnabled(false); } //disables the 'Add Players' button updateResults(); } } if (command.equals(messages.getString("moveButton"))) //$NON-NLS-1$ { if (gameInProgress) { moveInProgress = true; //move is underway setButtonStates(false, true, true, true, true, true); setRackButtonsEnabled(true); Player pl = g.getPlayer(); currentMove = new Move(pl); updateDisplay(); timerControl(e); if (pl instanceof ComputerPlayer) { Cursor cur_wait = new Cursor(Cursor.WAIT_CURSOR); //if computer player is moving, put a waiting cursor setCursor(cur_wait); Move mv = null; if (!g.board.getSquare(7, 7).isOccupied()) { FirstMoveStrategy ss = new FirstMoveStrategy(); mv = ss.generateMove(g); } else { CompositeMoveStrategy pms = new CompositeMoveStrategy(); mv = pms.generateMove(g); } if (mv != null) { g.endMove(mv, 0); //end computer's turn updateResultsRack(g.getLastPlayer().getRack(), g.getLastTurn()); history.add(mv); timerControl(e); updateDisplay(); currentMove = null; clearRack(); setButtonStates(true, false, false, false, false, false); if (getScrabble().i18n.language.equals("ru")) playerLabel.setText(messages.getString("scrabble.75") + " " + g.getPlayer().getName()); //$NON-NLS-1$ //$NON-NLS-2$ else playerLabel.setText(g.getPlayer().getName() + messages.getString("scrabble.75")); //$NON-NLS-1$ //$NON-NLS-2$ setMessageLine(g.getLastPlayer().getName() + messages.getString("scrabble.100") + g.getLastMoveScore() + messages.getString("scrabble.101")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } else //if computer cannot find a word { g.getPlayer().incrementSkipCounter(); g.endTurn(); updateResultsRack(g.getLastPlayer().getRack(), g.getLastTurn()); timerControl(e); updateDisplay(); currentMove = null; clearRack(); setButtonStates(true, false, false, false, false, false); if (getScrabble().i18n.language.equals("ru")) playerLabel.setText(messages.getString("scrabble.75") + " " + g.getPlayer().getName()); //$NON-NLS-1$ //$NON-NLS-2$ else playerLabel.setText(g.getPlayer().getName() + messages.getString("scrabble.75")); //$NON-NLS-1$ //$NON-NLS-2$ setMessageLine(messages .getString("scrabble.104") + g.getLastPlayer().getName() + messages.getString("scrabble.105")); //$NON-NLS-1$ //$NON-NLS-2$ } Cursor cur_default = new Cursor( Cursor.DEFAULT_CURSOR); //restore cursor to default setCursor(cur_default); } } return; } if (command.equals(messages.getString("resetMoveButton"))) //$NON-NLS-1$ { updateDisplay(); hintMoveButton.setEnabled(true); currentMove = new Move(g.getPlayer()); } if (command.equals(messages.getString("skipTurnButton"))) //$NON-NLS-1$ { timerControl(e); currentMove = new Move(g.getPlayer()); //empty out move : ) //process move (as endMove) g.endMove(currentMove, 1); //update the results rack of the (now) previous player's turn //this is the player who has just performed a move updateResultsRack(g.getLastPlayer().getRack(), g.getLastTurn()); history.add(currentMove); updateDisplay(); currentMove = null; rackClicked = false; //reset rack clicking for swapping letters clearRack(); //System.out.println(toXml()); moveInProgress = false; //move is finished successfully setButtonStates(true, false, false, false, false, false); if (getScrabble().i18n.language.equals("ru")) playerLabel.setText(messages.getString("scrabble.75") + " " + g.getPlayer().getName()); //$NON-NLS-1$ //$NON-NLS-2$ else playerLabel.setText(g.getPlayer().getName() + messages.getString("scrabble.75")); //$NON-NLS-1$ //$NON-NLS-2$ setMessageLine(g.getLastPlayer().getName() + messages.getString("scrabble.100") + g.getLastMoveScore() + messages.getString("scrabble.101")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ if (g.getGameEnded()) //if we've reached the end of the game, { moveButton.setEnabled(false); endGameButton.setEnabled(false); //make sure this button is disabled setRackButtonsEnabled(false); } } if (command.equals(messages.getString("swapLettersButton"))) //$NON-NLS-1$ { swapLetters.removeAll(swapLetters); //remove all elements from swapLetters JFrame f = new JFrame(); final JDialog frame = new JDialog(f); //final List selectedLetters = new ArrayList(); //new list containing all selected letters final JButton[] swapLettersButtons = new JButton[7]; //new button rack for popup window JPanel swapPanel = new JPanel(); JPanel buttonPanel = new JPanel(); final JButton slOK = new JButton(messages.getString("ok")); //$NON-NLS-1$ slOK.setEnabled(false); JButton slReset = new JButton(messages .getString("scrabble.115")); //$NON-NLS-1$ JButton slCancel = new JButton(messages.getString("cancel")); //$NON-NLS-1$ buttonPanel.add(slOK); buttonPanel.add(slReset); buttonPanel.add(slCancel); for (int i = 0; i < 7; i++) { final JButton jb1 = new JButton("-"); //$NON-NLS-1$ xcoord.put(jb1, new Integer(i)); swapLettersButtons[i] = jb1; jb1.setBackground(turquoise); //setup cool buttons jb1.setIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ jb1.setRolloverIcon(letterrollover); //new ImageIcon("resources/images/tiles/letter/letterrollover.png")); //$NON-NLS-1$ jb1.setPressedIcon(letterpressed); //new ImageIcon("resources/images/tiles/letter/letterpressed.png")); //$NON-NLS-1$ jb1.setDisabledIcon(letterdisabled); //new ImageIcon("resources/images/tiles/letter/letterdisabled.png")); //$NON-NLS-1$ jb1.setVerticalTextPosition(SwingConstants.CENTER); jb1.setHorizontalTextPosition(SwingConstants.CENTER); jb1.setBorder(null); jb1.setForeground(Color.BLACK); swapPanel.add(jb1); final int j = i; jb1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { Object eventSource = e.getSource(); JButton jb = (JButton) eventSource; Integer coord = (Integer) xcoord.get(jb); int x = coord.intValue(); //get letter from new rack, add to List selectedLetters, which contains all letters to swap swapLetters.add(g.getRackLetter(x)); jb1.setEnabled(false); slOK.setEnabled(true); } }); } final Rack rsl = g.getRack(); updateRack(swapLettersButtons, rsl); //update swap rack buttons with rack from board slOK.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { //need to return selected letters to bag rsl.removeLetters(swapLetters); //remove from rack selected letters g.bag.replaceLetters(swapLetters); //replace letters into bag //gives amount of letters less than 7 List selection = g.bag.giveLetters(7 - rsl .getRackSize()); rsl.addLetters(selection); //add new random selection letters frame.dispose(); //System.out.println(toXml()); setButtonStates(false, false, true, false, false, false); //updates board rack buttons with new rack updateRack(rackButtons, rsl); //sets board rack buttons to be disabled - this lets a player see what new letters they have, without letting them place a move setRackButtonsEnabled(false); swapClicked = true; } }); slReset.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { for (int i = 0; i < 7; i++) { swapLettersButtons[i].setEnabled(true); } swapLetters.removeAll(swapLetters); slOK.setEnabled(false); } }); slCancel.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { setButtonStates(false, true, true, true, true, true); frame.dispose(); } }); Container contentPane = frame.getContentPane(); frame.setContentPane(contentPane); contentPane.setLayout(new BorderLayout()); contentPane.add(swapPanel, BorderLayout.NORTH); contentPane.add(buttonPanel, BorderLayout.SOUTH); f .setIconImage(new ImageIcon( "resources/images/icon.png").getImage());//default coffee cup icon. //$NON-NLS-1$ frame.setModal(true); frame.setTitle(messages.getString("swapLettersButton")); //$NON-NLS-1$ frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } //SCRABBLE393 //fix for nullpointerexceptoin when hammering end move //uses boolean flag to denote when a move is in play, and when a move is not if (command.equals(messages.getString("endMoveButton"))) //$NON-NLS-1$ { if (moveInProgress) //if a move is in play, do this, else, dont perform actions { timerControl(e); if (swapClicked) { g.endMove(currentMove, 2); swapClicked = false; } else { g.endMove(currentMove, 0); } //update the results rack of the (now) previous player's turn //this is the player who has just performed a move updateResultsRack(g.getLastPlayer().getRack(), g.getLastTurn()); history.add(currentMove); updateDisplay(); currentMove = null; rackClicked = false; //reset rack clicking for swapping letters clearRack(); //System.out.println(toXml()); moveInProgress = false; //move is finished successfully setButtonStates(true, false, false, false, false, false); //russian tag has a different structure due to langauge differences if (getScrabble().i18n.language.equals("ru")) playerLabel.setText(messages.getString("scrabble.75") + " " + g.getPlayer().getName()); //$NON-NLS-1$ //$NON-NLS-2$ else playerLabel.setText(g.getPlayer().getName() + messages.getString("scrabble.75")); //$NON-NLS-1$ //$NON-NLS-2$ setMessageLine(g.getLastPlayer().getName() + messages.getString("scrabble.100") + g.getLastMoveScore() + messages.getString("scrabble.48")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } if (g.getGameEnded()) //if we've reached the end of the game, { moveButton.setEnabled(false); endGameButton.setEnabled(false); //make sure this button is disabled setRackButtonsEnabled(false); } } } if (ycoord.get(cb) != null) // clicked board button { if (current == null || currentMove == null) // nothing to place, ignore { setMessageLine(messages.getString("scrabble.0")); //$NON-NLS-1$ } else { String resp = ""; //$NON-NLS-1$ hintMoveButton.setEnabled(false); int x = ((Integer) xcoord.get(cb)).intValue(); int y = ((Integer) ycoord.get(cb)).intValue(); // g.placeLetter(current,x,y); if (current.isBlank()) { List alphabet = getScrabble().getScrabbleBuilder() .getAlphabet(); Object[] letterArray = new Object[alphabet.size()]; for (int i = 0; i < (alphabet.size() - 1); i++) //size()-1 so that it doesnt add the blank { letterArray[i] = alphabet.get(i).toString() .toUpperCase(); } resp = (String) JOptionPane.showInputDialog(null, messages.getString("scrabble.136"), //$NON-NLS-1$ messages.getString("scrabble.137"), //$NON-NLS-1$ JOptionPane.PLAIN_MESSAGE, null, letterArray, letterArray[0]); if (resp != null) { current.setSymbol(resp.toLowerCase().charAt(0)); current.setAscii(resp.toLowerCase().charAt(0)); } } if (resp != null) { LetterMove lm = new LetterMove(x, y, current); currentMove.addLetterMove(lm); boardButtons[x][y] .setText("" + Character.toUpperCase(current.getSymbol()) + ""); //$NON-NLS-1$ //$NON-NLS-2$ boardButtons[x][y].setIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ boardButtons[x][y].setDisabledIcon(letter); //new ImageIcon("resources/images/tiles/letter/letter.png")); //$NON-NLS-1$ boardButtons[x][y].setEnabled(false); rackButtons[lastRack].setForeground(Color.LIGHT_GRAY); rackButtons[lastRack].setEnabled(false); current = null; rackClicked = false; lastRack = -1; } else { rackClicked = false; lastRack = -1; } } } else if (xcoord.get(cb) != null) // clicked rack button { if (rackClicked == false) //get letter clicked into current { Integer coord = (Integer) xcoord.get(cb); int x = coord.intValue(); current = g.getRackLetter(x); lastRack = x; rackClicked = true; } else //if rackClicked = true, swap last clicked letter with newly clicked letter and update the rack's display { Integer coord = (Integer) xcoord.get(cb); int x = coord.intValue(); //new letter last clicked Letter letterToSwap = g.getRackLetter(x); //set new letters g.getRack().setLetter(x, current); g.getRack().setLetter(lastRack, letterToSwap); //update the affected button's appearance updateRackButton(x, g.getRack()); updateRackButton(lastRack, g.getRack()); //reset rackClicked for next click rackClicked = false; current = null; } } } } /** * Deals four racks at the start of the game so that all players can see their racks * displayed in the results panel. * */ private void setRacksAtStartOfGame() { int turn = g.getTurn(); for (int i = 0; i < numberOfPlayers; i++) { Player p = (Player) g.getPlayers().get(turn); Rack r = p.getRack(); List selection = g.bag.giveLetters(7 - r.getRackSize()); r.addLetters(selection); updateResultsRack(r, turn); turn++; } } /** * Sets the functional controls button states all at once. * * @param a moveButton boolean toggle. * @param b resetMoveButton boolean toggle. * @param c endMoveButton boolean toggle. * @param d skipTurnButton boolean toggle. * @param e swapLettersButton boolean toggle. * @param f hintMoveButton boolean toggle. */ private void setButtonStates(boolean a, boolean b, boolean c, boolean d, boolean e, boolean f) { moveButton.setEnabled(a); resetMoveButton.setEnabled(b); endMoveButton.setEnabled(c); skipTurnButton.setEnabled(d); swapLettersButton.setEnabled(e); hintMoveButton.setEnabled(f); } /** * Sets all board buttons to be the input parameter on's boolean state. * * @param on Boolean value controlling all board buttons. */ private void setBoardButtonsEnabled(boolean on) { for (int j = 0; j < 15; j++) { for (int i = 0; i < 15; i++) { boardButtons[i][j].setEnabled(on); } } } /** * Sets all rack buttons to be the input parameter on's boolean state. * These are not the results rack buttons, which never turn on. * * @param on Boolean value controlling all rack buttons. */ private void setRackButtonsEnabled(boolean on) { for (int i = 0; i < 7; i++) { rackButtons[i].setEnabled(on); } } /** * Sets the message line's text. The message line resids on the south of the main * frame, to the left. It displays non-crucial information to the client in a passive way. * * @param s String input, desired message line text. */ public void setMessageLine(String s) { messageLine.setText(" " + s); //$NON-NLS-1$ } /** * Controls the progressBar status changes. * * @param on Boolean value denoting desired state of the progress bar. * @param progressBarLabel Desired String label for progress bar. */ private void progressBarControl(boolean on, String progressBarLabel) { progressBar.setIndeterminate(on); progressBar.setString(progressBarLabel); } /** * Controls the progressBar status changes. This method has no String input. * Useful for resetting the progress bar. * * @param on Boolean value denoting desired state of the progress bar. */ private void progressBarControl(boolean on) { progressBar.setIndeterminate(on); progressBar.setString(""); //$NON-NLS-1$ } /** * Starts or stops the timer. * When called, if the timer is stopped, it will start logging the time since the * ActionEvent that triggered it. * If the timer is already running, it will stop the timer and display the time since * the last ActionEvent was called. * * @param event ActionEvent that triggers timer to start/stop. */ private void timerControl(ActionEvent event) { if (timerRunning == false) { //record the time and start the stopwatch. timerRunning = true; startTime = event.getWhen(); // time when mouse was clicked. //long endTime = event.getWhen(); progressBarControl(true, messages.getString("scrabble.149")); //$NON-NLS-1$ if (timer == null) { timer = new Timer(100, this); timer.start(); } else timer.restart(); } else { //stop the stopwatch. compute the elapsed time since the //stopwatch was started and display it. timer.stop(); timerRunning = false; long endTime = event.getWhen(); double seconds = (endTime - startTime) / 1000.0; progressBarControl(false, messages.getString("scrabble.150") + seconds + messages.getString("scrabble.151")); //$NON-NLS-1$ //$NON-NLS-2$ } } /** * Returns a string containing the current history, as defined in variable history. * * @return String */ public String toXml() { String res = "\n"; //$NON-NLS-1$ for (int i = 0; i < history.size(); i++) { Move m = (Move) history.get(i); res = res + m.toXml(); } return res + "\n"; //$NON-NLS-1$ } /** * Saves game history to .XML file. */ public void saveDataToFile() { File startingpoint = new File("output"); //$NON-NLS-1$ JFileChooser fc = new JFileChooser(); fc.setCurrentDirectory(startingpoint); fc.setDialogTitle(messages.getString("scrabble.145")); //$NON-NLS-1$ int returnVal = fc.showSaveDialog(this); if (returnVal == JFileChooser.APPROVE_OPTION) { File file = fc.getSelectedFile(); try { PrintWriter out = new PrintWriter(new BufferedWriter( new FileWriter(file))); out.println(toXml()); out.close(); } catch (Exception e) { System.err.println(messages.getString("scrabble.146"));} //$NON-NLS-1$ System.exit(0); //exit if save successful } else { return; } } /** * Creates the LocalScrabble instance, displays the player's GUI interface. */ public static void createAndShowGUI() { window = new LocalScrabble(); window.setIconImage(new ImageIcon("resources/images/icon.png").getImage()); //$NON-NLS-1$ window.pack(); window.setLocationRelativeTo(null); //centres the frame on the screen window.setVisible(true); } }