Sudoku: src/de/uapcore/sudoku/SudokuTextField.java@5179eff8a9b6

     1 package de.uapcore.sudoku;

     3 import java.awt.Color;

     4 import java.awt.Dimension;

     5 import java.awt.Font;

     6 import java.awt.event.FocusAdapter;

     7 import java.awt.event.FocusEvent;

     8 import java.awt.event.KeyAdapter;

     9 import java.awt.event.KeyEvent;

    10 import javax.swing.JTextField;

    12 /**

    13  *

    14  * @author mike

    15  */

    16 public final class SudokuTextField extends JTextField {

    18     private boolean modified;

    20     public SudokuTextField() {

    21         setBorder(null);

    22         setBackground(Color.WHITE);

    24         setFont(new Font("Dialog", Font.PLAIN, 18));

    25         setHorizontalAlignment(JTextField.CENTER);

    27         Dimension dim = new Dimension(40,40);

    28         setPreferredSize(dim);

    29         setMinimumSize(dim);

    30         setMaximumSize(dim);

    32         addKeyListener(new KeyAdapter() {

    33             private void handle(KeyEvent e) {

    34                 if (getText().length() > 0 && getSelectedText() == null) {

    35                     int c = e.getKeyCode();

    36                     if (c != KeyEvent.VK_DELETE &&

    37                             c != KeyEvent.VK_BACK_SPACE &&

    38                             !e.isActionKey()) {

    39                         e.consume();

    40                     }

    41                 } else {

    42                     char c = e.getKeyChar();

    43                     if (c < '0' || c > '9') {

    44                         e.consume();

    45                     } else {

    46                         setModified(true);

    47                     }

    48                 }

    49             }

    51             @Override

    52             public void keyPressed(KeyEvent e) {

    53                 handle(e);

    54             }

    56             @Override

    57             public void keyTyped(KeyEvent e) {

    58                 handle(e);

    59             }

    61             @Override

    62             public void keyReleased(KeyEvent e) {

    63                 handle(e);

    64             }

    66         });

    67         addFocusListener(new FocusAdapter() {

    68             @Override

    69             public void focusGained(FocusEvent e) {

    70                 selectAll();

    71             }

    72         });

    73     }

    75     public int getValue() {

    76         if (getText().length() > 0) {

    77             return Integer.valueOf(getText());

    78         } else {

    79             return 0;

    80         }

    81     }

    83     public void setValue(int v) {

    84         if (v == 0) {

    85             setText("");

    86         } else if (v < 10) {

    87             setText(String.valueOf(v));

    88         } else {

    89             throw new IllegalArgumentException(

    90                     "Sudoku numbers must be in range 0-9 (0 means 'not set')");

    91         }

    92     }

    94     public void setModified(boolean modified) {

    95         this.modified = modified;

    96         setForeground(modified?Color.BLUE:Color.BLACK);

    97     }

    99     public boolean isModified() {

   100         return modified;

   101     }

   102 }

Mercurial > hg > Sudoku / file revision