org.eclipse.swt.snippets.Snippet169.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet169.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Make a toggle button have radio behavior
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */

import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet169 {
    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Snippet 169");
        shell.setLayout(new FillLayout());
        Listener listener = e -> {
            Control[] children = shell.getChildren();
            for (int i = 0; i < children.length; i++) {
                Control child = children[i];
                if (e.widget != child && child instanceof Button && (child.getStyle() & SWT.TOGGLE) != 0) {
                    ((Button) child).setSelection(false);
                }
            }
            ((Button) e.widget).setSelection(true);
        };
        for (int i = 0; i < 20; i++) {
            Button button = new Button(shell, SWT.TOGGLE);
            button.setText("B" + i);
            button.addListener(SWT.Selection, listener);
            if (i == 0)
                button.setSelection(true);
        }
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}