org.eclipse.swt.snippets.Snippet115.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet115.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;

/*
 * Composite example snippet: force radio behavior on two different composites
 *
 * 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 Snippet115 {

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 115");
        shell.setLayout(new RowLayout(SWT.VERTICAL));
        Composite c1 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
        c1.setLayout(new RowLayout());
        Composite c2 = new Composite(shell, SWT.BORDER | SWT.NO_RADIO_GROUP);
        c2.setLayout(new RowLayout());
        final Composite[] composites = new Composite[] { c1, c2 };
        Listener radioGroup = event -> {
            for (int i = 0; i < composites.length; i++) {
                Composite composite = composites[i];
                Control[] children = composite.getChildren();
                for (int j = 0; j < children.length; j++) {
                    Control child = children[j];
                    if (child instanceof Button) {
                        Button button1 = (Button) child;
                        if ((button1.getStyle() & SWT.RADIO) != 0)
                            button1.setSelection(false);
                    }
                }
            }
            Button button2 = (Button) event.widget;
            button2.setSelection(true);
        };
        for (int i = 0; i < 4; i++) {
            Button button = new Button(c1, SWT.RADIO);
            button.setText("Button " + i);
            button.addListener(SWT.Selection, radioGroup);
        }
        for (int i = 0; i < 4; i++) {
            Button button = new Button(c2, SWT.RADIO);
            button.setText("Button " + (i + 4));
            button.addListener(SWT.Selection, radioGroup);
        }
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}