| /******************************************************************************* |
| * 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; |
| |
| /* |
| * Adding an accessible listener to provide state information |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.accessibility.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet162 { |
| |
| final static String STATE = "CheckedIndices"; |
| |
| public static void main (String [] args) { |
| final Display display = new Display (); |
| Image checkedImage = getCheckedImage (display); |
| Image uncheckedImage = getUncheckedImage (display); |
| Shell shell = new Shell (display); |
| shell.setLayout (new FillLayout ()); |
| final Table table = new Table (shell, SWT.BORDER); |
| TableColumn column1 = new TableColumn (table, SWT.NONE); |
| TableColumn column2 = new TableColumn (table, SWT.NONE); |
| TableColumn column3 = new TableColumn (table, SWT.NONE); |
| TableItem item1 = new TableItem (table, SWT.NONE); |
| item1.setText (new String [] {"first item", "a", "b"}); |
| item1.setImage (1, uncheckedImage); |
| item1.setImage (2, uncheckedImage); |
| item1.setData (STATE, null); |
| TableItem item2 = new TableItem (table, SWT.NONE); |
| item2.setText (new String [] {"second item", "c", "d"}); |
| item2.setImage (1, uncheckedImage); |
| item2.setImage (2, checkedImage); |
| item2.setData (STATE, new int [] {2}); |
| TableItem item3 = new TableItem (table, SWT.NONE); |
| item3.setText (new String [] {"third", "e", "f"}); |
| item3.setImage (1, checkedImage); |
| item3.setImage (2, checkedImage); |
| item3.setData (STATE, new int [] {1, 2}); |
| column1.pack (); |
| column2.pack (); |
| column3.pack (); |
| Accessible accessible = table.getAccessible (); |
| accessible.addAccessibleListener (new AccessibleAdapter () { |
| public void getName (AccessibleEvent e) { |
| super.getName (e); |
| if (e.childID >= 0 && e.childID < table.getItemCount ()) { |
| TableItem item = table.getItem (e.childID); |
| Point pt = display.getCursorLocation (); |
| pt = display.map (null, table, pt); |
| for (int i = 0; i < table.getColumnCount (); i++) { |
| if (item.getBounds (i).contains (pt)) { |
| int [] data = (int []) item.getData (STATE); |
| boolean checked = false; |
| if (data != null) { |
| for (int j = 0; j < data.length; j++) { |
| if (data [j] == i) { |
| checked = true; |
| break; |
| } |
| } |
| } |
| e.result = item.getText (i) + " " + (checked ? "checked" : "unchecked"); |
| break; |
| } |
| } |
| } |
| } |
| }); |
| accessible.addAccessibleControlListener (new AccessibleControlAdapter () { |
| public void getState (AccessibleControlEvent e) { |
| super.getState (e); |
| if (e.childID >= 0 && e.childID < table.getItemCount ()) { |
| TableItem item = table.getItem (e.childID); |
| int [] data = (int []) item.getData (STATE); |
| if (data != null) { |
| Point pt = display.getCursorLocation (); |
| pt = display.map (null, table, pt); |
| for (int i = 0; i < data.length; i++) { |
| if (item.getBounds (data [i]).contains (pt)) { |
| e.detail |= ACC.STATE_CHECKED; |
| break; |
| } |
| } |
| } |
| } |
| } |
| }); |
| shell.open (); |
| while (!shell.isDisposed ()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| checkedImage.dispose (); |
| uncheckedImage.dispose (); |
| display.dispose (); |
| } |
| |
| static Image getCheckedImage (Display display) { |
| Image image = new Image (display, 16, 16); |
| GC gc = new GC (image); |
| gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW)); |
| gc.fillOval (0, 0, 16, 16); |
| gc.setForeground (display.getSystemColor (SWT.COLOR_DARK_GREEN)); |
| gc.drawLine (0, 0, 16, 16); |
| gc.drawLine (16, 0, 0, 16); |
| gc.dispose (); |
| return image; |
| } |
| |
| static Image getUncheckedImage (Display display) { |
| Image image = new Image (display, 16, 16); |
| GC gc = new GC (image); |
| gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW)); |
| gc.fillOval (0, 0, 16, 16); |
| gc.dispose (); |
| return image; |
| } |
| } |