| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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; |
| |
| /* |
| * Canvas example snippet: implement tab traversal (behave like a tab group) |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet21 { |
| |
| public static void main (String [] args) { |
| Display display = new Display (); |
| final Color red = display.getSystemColor (SWT.COLOR_RED); |
| final Color blue = display.getSystemColor (SWT.COLOR_BLUE); |
| Shell shell = new Shell (display); |
| Button b = new Button (shell, SWT.PUSH); |
| b.setBounds (10, 10, 100, 32); |
| b.setText ("Button"); |
| shell.setDefaultButton (b); |
| final Canvas c = new Canvas (shell, SWT.BORDER); |
| c.setBounds (10, 50, 100, 32); |
| c.addListener (SWT.Traverse, new Listener () { |
| public void handleEvent (Event e) { |
| switch (e.detail) { |
| /* Do tab group traversal */ |
| case SWT.TRAVERSE_ESCAPE: |
| case SWT.TRAVERSE_RETURN: |
| case SWT.TRAVERSE_TAB_NEXT: |
| case SWT.TRAVERSE_TAB_PREVIOUS: |
| case SWT.TRAVERSE_PAGE_NEXT: |
| case SWT.TRAVERSE_PAGE_PREVIOUS: |
| e.doit = true; |
| break; |
| } |
| } |
| }); |
| c.addListener (SWT.FocusIn, new Listener () { |
| public void handleEvent (Event e) { |
| c.setBackground (red); |
| } |
| }); |
| c.addListener (SWT.FocusOut, new Listener () { |
| public void handleEvent (Event e) { |
| c.setBackground (blue); |
| } |
| }); |
| c.addListener (SWT.KeyDown, new Listener () { |
| public void handleEvent (Event e) { |
| System.out.println ("KEY"); |
| for (int i=0; i<64; i++) { |
| Color c1 = red, c2 = blue; |
| if (c.isFocusControl ()) { |
| c1 = blue; c2 = red; |
| } |
| c.setBackground (c1); |
| c.update (); |
| c.setBackground (c2); |
| } |
| } |
| }); |
| Text t = new Text (shell, SWT.SINGLE | SWT.BORDER); |
| t.setBounds (10, 85, 100, 32); |
| |
| Text r = new Text (shell, SWT.MULTI | SWT.BORDER); |
| r.setBounds (10, 120, 100, 32); |
| |
| c.setFocus (); |
| shell.setSize (200, 200); |
| shell.open (); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| } |