org.eclipse.swt.snippets.Snippet56.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet56.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;

/*
 * ProgressBar example snippet: update a progress bar (from another thread)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet56 {

    public static void main(String[] args) {
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 56");
        final ProgressBar bar = new ProgressBar(shell, SWT.SMOOTH);
        Rectangle clientArea = shell.getClientArea();
        bar.setBounds(clientArea.x, clientArea.y, 200, 32);
        shell.open();
        final int maximum = bar.getMaximum();
        new Thread() {
            @Override
            public void run() {
                for (final int[] i = new int[1]; i[0] <= maximum; i[0]++) {
                    try {
                        Thread.sleep(100);
                    } catch (Throwable th) {
                    }
                    if (display.isDisposed())
                        return;
                    display.asyncExec(() -> {
                        if (bar.isDisposed())
                            return;
                        bar.setSelection(i[0]);
                    });
                }
            }
        }.start();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}