org.eclipse.swt.snippets.Snippet249.java Source code

Introduction

Here is the source code for org.eclipse.swt.snippets.Snippet249.java

Source

/*******************************************************************************
 * 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;

/*
 * StackLayout example snippet: use a StackLayout to switch between Composites.
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet249 {

    static int pageNum = -1;

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 249");
        Rectangle clientArea = shell.getClientArea();
        shell.setBounds(clientArea.x + 10, clientArea.y + 10, 300, 200);
        // create the composite that the pages will share
        final Composite contentPanel = new Composite(shell, SWT.BORDER);
        contentPanel.setBounds(clientArea.x + 100, clientArea.y + 10, 190, 90);
        final StackLayout layout = new StackLayout();
        contentPanel.setLayout(layout);

        // create the first page's content
        final Composite page0 = new Composite(contentPanel, SWT.NONE);
        page0.setLayout(new RowLayout());
        Label label = new Label(page0, SWT.NONE);
        label.setText("Label on page 1");
        label.pack();

        // create the second page's content
        final Composite page1 = new Composite(contentPanel, SWT.NONE);
        page1.setLayout(new RowLayout());
        Button button = new Button(page1, SWT.NONE);
        button.setText("Button on page 2");
        button.pack();

        // create the button that will switch between the pages
        Button pageButton = new Button(shell, SWT.PUSH);
        pageButton.setText("Push");
        pageButton.setBounds(clientArea.x + 10, clientArea.y + 10, 80, 25);
        pageButton.addListener(SWT.Selection, event -> {
            pageNum = ++pageNum % 2;
            layout.topControl = pageNum == 0 ? page0 : page1;
            contentPanel.layout();
        });

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