| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.snippets; |
| |
| /* |
| * Text example snippet: use a regular expression to verify input |
| * In this case a phone number is used. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import java.util.regex.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet196 { |
| /* |
| * Phone numbers follow the rule [(][1-9][1-9][1-9][)][1-9][1-9][1-9][-][1-9][1-9][1-9][1-9] |
| */ |
| private static final String REGEX = "[(]\\d{3}[)]\\d{3}[-]\\d{4}"; //$NON-NLS-1$ |
| private static final String template = "(###)###-####"; //$NON-NLS-1$ |
| private static final String defaultText = "(000)000-0000"; //$NON-NLS-1$ |
| |
| |
| public static void main(String[] args) { |
| |
| Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new GridLayout()); |
| final Text text = new Text(shell, SWT.BORDER); |
| Font font = new Font(display, "Courier New", 10, SWT.NONE); //$NON-NLS-1$ |
| text.setFont(font); |
| text.setText(template); |
| text.addListener(SWT.Verify, new Listener() { |
| //create the pattern for verification |
| Pattern pattern = Pattern.compile(REGEX); |
| //ignore event when caused by inserting text inside event handler |
| boolean ignore; |
| @Override |
| public void handleEvent(Event e) { |
| if (ignore) return; |
| e.doit = false; |
| if (e.start > 13 || e.end > 14) return; |
| StringBuffer buffer = new StringBuffer(e.text); |
| |
| //handle backspace |
| if (e.character == '\b') { |
| for (int i = e.start; i < e.end; i++) { |
| // skip over separators |
| switch (i) { |
| case 0: |
| if (e.start + 1 == e.end) { |
| return; |
| } else { |
| buffer.append('('); |
| } |
| break; |
| case 4: |
| if (e.start + 1 == e.end) { |
| buffer.append(new char [] {'#',')'}); |
| e.start--; |
| } else { |
| buffer.append(')'); |
| } |
| break; |
| case 8: |
| if (e.start + 1 == e.end) { |
| buffer.append(new char [] {'#','-'}); |
| e.start--; |
| } else { |
| buffer.append('-'); |
| } |
| break; |
| default: buffer.append('#'); |
| } |
| } |
| text.setSelection(e.start, e.start + buffer.length()); |
| ignore = true; |
| text.insert(buffer.toString()); |
| ignore = false; |
| // move cursor backwards over separators |
| if (e.start == 5 || e.start == 9) e.start--; |
| text.setSelection(e.start, e.start); |
| return; |
| } |
| |
| StringBuffer newText = new StringBuffer(defaultText); |
| char[] chars = e.text.toCharArray(); |
| int index = e.start - 1; |
| for (int i = 0; i < e.text.length(); i++) { |
| index++; |
| switch (index) { |
| case 0: |
| if (chars[i] == '(') continue; |
| index++; |
| break; |
| case 4: |
| if (chars[i] == ')') continue; |
| index++; |
| break; |
| case 8: |
| if (chars[i] == '-') continue; |
| index++; |
| break; |
| } |
| if (index >= newText.length()) return; |
| newText.setCharAt(index, chars[i]); |
| } |
| // if text is selected, do not paste beyond range of selection |
| if (e.start < e.end && index + 1 != e.end) return; |
| Matcher matcher = pattern.matcher(newText); |
| if (matcher.lookingAt()) { |
| text.setSelection(e.start, index + 1); |
| ignore = true; |
| text.insert(newText.substring(e.start, index + 1)); |
| ignore = false; |
| } |
| } |
| }); |
| |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| font.dispose(); |
| display.dispose(); |
| } |
| } |