SnippetInfiniteProgressPanel.java

/*******************************************************************************
 * Copyright (c) 2011 Laurent CARON
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Laurent CARON (laurent.caron at gmail dot com) - initial API and implementation
 *******************************************************************************/
package org.mihalis.opal.infinitePanel;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * This snippet demonstrates the infinite progress panel
 * 
 */
public class SnippetInfiniteProgressPanel {
	public static void main(final String[] args) {
		final Display display = new Display();
		final Shell shell = new Shell();
		shell.setLayout(new GridLayout(2, false));

		createRow(shell, "First Name");
		createRow(shell, "Last Name");
		createRow(shell, "E-mail");
		createRow(shell, "Phone number");

		createButtons(shell);

		shell.setSize(shell.computeSize(400, 400));

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

	private static void createRow(final Shell shell, final String label) {
		final Label lbl = new Label(shell, SWT.NONE);
		lbl.setText(label);
		lbl.setLayoutData(new GridData(SWT.END, SWT.CENTER, false, false));

		final Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
		text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	}

	private static void createButtons(final Shell shell) {
		final Composite composite = new Composite(shell, SWT.NONE);
		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
		composite.setLayout(new GridLayout(2, false));

		final Button ok = new Button(composite, SWT.PUSH);
		ok.setText("Ok");
		ok.setLayoutData(new GridData(SWT.END, SWT.END, true, true));
		ok.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(final SelectionEvent e) {
				// Retrieve an infinite progress panel
				final InfiniteProgressPanel panel = InfiniteProgressPanel.getInfiniteProgressPanelFor(shell);

				// Set up a text (optional)
				panel.setText("Please wait...");
				panel.setTextColor(shell.getDisplay().getSystemColor(SWT.COLOR_DARK_RED));
				panel.setTextFont(new Font(shell.getDisplay(), "Lucida Sans", 18, SWT.BOLD));

				panel.start();
				final Thread performer = new Thread(new Runnable() {
					@Override
					public void run() {
						performLongTask(panel);
					}
				}, "Performer");
				performer.start();
			}

			private void performLongTask(final InfiniteProgressPanel panel) {
				try {
					Thread.sleep(4000);
				} catch (final InterruptedException e) {
					e.printStackTrace();
				}
				// Stop the progress panel
				panel.stop();
			}

			@Override
			public void widgetDefaultSelected(final SelectionEvent e) {
			}
		});

		final Button cancel = new Button(composite, SWT.PUSH);
		cancel.setText("Cancel");
		cancel.setLayoutData(new GridData(SWT.CENTER, SWT.END, false, true));
		cancel.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(final SelectionEvent e) {
				shell.dispose();
			}

			@Override
			public void widgetDefaultSelected(final SelectionEvent e) {
				shell.dispose();
			}
		});
	}

}