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package org.eclipse.swt.snippets;
/*
* Adding an accessible listener to provide emulated 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.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Snippet162 {
final static String[] ITEM_NAMES = {"first item", "second", "third", "fourth", "fifth"};
public static void main (String [] args) {
Display display = new Display ();
final Image checkedImage = getStateImage (display, true);
final Image uncheckedImage = getStateImage (display, false);
Shell shell = new Shell (display);
shell.setLayout (new FillLayout ());
final Table table = new Table (shell, SWT.FULL_SELECTION | SWT.BORDER);
for (int i = 0; i < ITEM_NAMES.length; i++) {
TableItem item = new TableItem (table, SWT.NONE);
item.setText (ITEM_NAMES[i]);
item.setImage (i % 2 == 0 ? checkedImage : uncheckedImage);
}
table.addSelectionListener(new SelectionAdapter(){
public void widgetDefaultSelected(SelectionEvent e) {
TableItem item = (TableItem)e.item;
item.setImage(item.getImage() == checkedImage ? uncheckedImage : checkedImage);
}
});
table.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter () {
public void getRole(AccessibleControlEvent e) {
e.detail = ACC.ROLE_CHECKBUTTON;
}
public void getState (AccessibleControlEvent e) {
if (e.childID >= 0 && e.childID < table.getItemCount ()) {
TableItem item = table.getItem (e.childID);
if (item.getImage() == checkedImage) {
e.detail |= ACC.STATE_CHECKED;
}
}
}
});
shell.pack();
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
checkedImage.dispose ();
uncheckedImage.dispose ();
display.dispose ();
}
static Image getStateImage (Display display, boolean checked) {
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);
if (checked) {
gc.setForeground (display.getSystemColor (SWT.COLOR_DARK_GREEN));
gc.drawLine (0, 0, 16, 16);
gc.drawLine (16, 0, 0, 16);
}
gc.dispose ();
return image;
}
}
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