Snippet115.java Source code

Introduction

Here is the source code for Snippet115.java

Source

/*
 * Composite example snippet: force radio behavior on two different composites
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class Snippet115 {

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        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 = new Listener() {
            public void handleEvent(Event 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 button = (Button) child;
                            if ((button.getStyle() & SWT.RADIO) != 0)
                                button.setSelection(false);
                        }
                    }
                }
                Button button = (Button) event.widget;
                button.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();
    }
}