| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.colorchooser; |
| |
| import java.awt.event.FocusEvent; |
| import java.awt.event.FocusListener; |
| import java.text.ParseException; |
| import static java.util.Locale.ENGLISH; |
| import javax.swing.JFormattedTextField; |
| import javax.swing.JFormattedTextField.AbstractFormatter; |
| import javax.swing.SwingConstants; |
| import javax.swing.SwingUtilities; |
| import javax.swing.text.AttributeSet; |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.DefaultFormatterFactory; |
| import javax.swing.text.DocumentFilter; |
| |
| final class ValueFormatter extends AbstractFormatter implements FocusListener, Runnable { |
| |
| static void init(int length, boolean hex, JFormattedTextField text) { |
| ValueFormatter formatter = new ValueFormatter(length, hex); |
| text.setColumns(length); |
| text.setFormatterFactory(new DefaultFormatterFactory(formatter)); |
| text.setHorizontalAlignment(SwingConstants.RIGHT); |
| text.setMinimumSize(text.getPreferredSize()); |
| text.addFocusListener(formatter); |
| } |
| |
| private final DocumentFilter filter = new DocumentFilter() { |
| @Override |
| public void remove(FilterBypass fb, int offset, int length) throws BadLocationException { |
| if (isValid(fb.getDocument().getLength() - length)) { |
| fb.remove(offset, length); |
| } |
| } |
| |
| @Override |
| public void replace(FilterBypass fb, int offset, int length, String text, AttributeSet set) throws BadLocationException { |
| if (isValid(fb.getDocument().getLength() + text.length() - length) && isValid(text)) { |
| fb.replace(offset, length, text.toUpperCase(ENGLISH), set); |
| } |
| } |
| |
| @Override |
| public void insertString(FilterBypass fb, int offset, String text, AttributeSet set) throws BadLocationException { |
| if (isValid(fb.getDocument().getLength() + text.length()) && isValid(text)) { |
| fb.insertString(offset, text.toUpperCase(ENGLISH), set); |
| } |
| } |
| }; |
| |
| private final int length; |
| private final int radix; |
| |
| private JFormattedTextField text; |
| |
| ValueFormatter(int length, boolean hex) { |
| this.length = length; |
| this.radix = hex ? 16 : 10; |
| } |
| |
| @Override |
| public Object stringToValue(String text) throws ParseException { |
| try { |
| return Integer.valueOf(text, this.radix); |
| } |
| catch (NumberFormatException nfe) { |
| ParseException pe = new ParseException("illegal format", 0); |
| pe.initCause(nfe); |
| throw pe; |
| } |
| } |
| |
| @Override |
| public String valueToString(Object object) throws ParseException { |
| if (object instanceof Integer) { |
| if (this.radix == 10) { |
| return object.toString(); |
| } |
| int value = (Integer) object; |
| int index = this.length; |
| char[] array = new char[index]; |
| while (0 < index--) { |
| array[index] = Character.forDigit(value & 0x0F, this.radix); |
| value >>= 4; |
| } |
| return new String(array).toUpperCase(ENGLISH); |
| } |
| throw new ParseException("illegal object", 0); |
| } |
| |
| @Override |
| protected DocumentFilter getDocumentFilter() { |
| return this.filter; |
| } |
| |
| public void focusGained(FocusEvent event) { |
| Object source = event.getSource(); |
| if (source instanceof JFormattedTextField) { |
| this.text = (JFormattedTextField) source; |
| SwingUtilities.invokeLater(this); |
| } |
| } |
| |
| public void focusLost(FocusEvent event) { |
| } |
| |
| public void run() { |
| if (this.text != null) { |
| this.text.selectAll(); |
| } |
| } |
| |
| private boolean isValid(int length) { |
| return (0 <= length) && (length <= this.length); |
| } |
| |
| private boolean isValid(String text) { |
| int length = text.length(); |
| for (int i = 0; i < length; i++) { |
| char ch = text.charAt(i); |
| if (Character.digit(ch, this.radix) < 0) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |