org.mihalis.opal/src/main/java/org/mihalis/opal/preferenceWindow/widgets/PWButton.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 implementation and API
 *******************************************************************************/
package org.mihalis.opal.preferenceWindow.widgets;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

/**
 * Instances of this class are buttons.
 */
public class PWButton extends PWWidget {
	
	/** The listener. */
	private final SelectionListener listener;

	/**
	 * Constructor.
	 *
	 * @param label associated label
	 * @param listener selection listener
	 */
	public PWButton(final String label, final SelectionListener listener) {
		super(label, null, 1, true);
		this.listener = listener;
	}

	/**
	 * Builds the.
	 *
	 * @param parent the parent
	 * @return the control
	 * @see org.mihalis.opal.preferenceWindow.widgets.PWWidget#build(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	public Control build(final Composite parent) {
		final Button button = new Button(parent, SWT.PUSH);
		addControl(button);
		if (getLabel() == null) {
			throw new UnsupportedOperationException("You need to set a label for a button");
		} else {
			button.setText(getLabel());
		}
		if (this.listener != null) {
			button.addSelectionListener(this.listener);
		}

		return button;

	}

	/**
	 * Check.
	 *
	 * @see org.mihalis.opal.preferenceWindow.widgets.PWWidget#check()
	 */
	@Override
	public void check() {
	}
}