org.eclipse.swt.snippets.Snippet6.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet6.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;

/*
 * GridLayout example snippet: insert widgets into a grid layout
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.1
 */
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet6 {

    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Snippet 6");
        shell.setLayout(new GridLayout());
        final Composite c = new Composite(shell, SWT.NONE);
        GridLayout layout = new GridLayout();
        layout.numColumns = 3;
        c.setLayout(layout);
        for (int i = 0; i < 10; i++) {
            Button b = new Button(c, SWT.PUSH);
            b.setText("Button " + i);
        }

        Button b = new Button(shell, SWT.PUSH);
        b.setText("add a new button at row 2 column 1");
        final int[] index = new int[1];
        b.addListener(SWT.Selection, e -> {
            Button s = new Button(c, SWT.PUSH);
            s.setText("Special " + index[0]);
            index[0]++;
            Control[] children = c.getChildren();
            s.moveAbove(children[3]);
            shell.layout(new Control[] { s });
        });

        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }

}