StrokeChooserPanel.java

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -----------------------
 * StrokeChooserPanel.java
 * -----------------------
 * (C) Copyright 2000-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Dirk Zeitz;
 *
 * Changes (from 26-Oct-2001)
 * --------------------------
 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
 * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 16-Mar-2004 : Fix for focus problems (DZ);
 * 21-Jun-2007 : Removed JCommon dependencies (DG);
 *
 */

package org.jfree.chart.ui;

import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Stroke;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JComboBox;
import javax.swing.JPanel;

/**
 * A component for choosing a stroke from a list of available strokes.  This
 * class needs work.
 */
public class StrokeChooserPanel extends JPanel {

    /** A combo for selecting the stroke. */
    private JComboBox selector;

    /**
     * Creates a panel containing a combo-box that allows the user to select
     * one stroke from a list of available strokes.
     *
     * @param current  the current stroke sample.
     * @param available  an array of 'available' stroke samples.
     */
    public StrokeChooserPanel(StrokeSample current, StrokeSample[] available) {
        setLayout(new BorderLayout());
        this.selector = new JComboBox(available);
        this.selector.setSelectedItem(current);
        this.selector.setRenderer(new StrokeSample(new BasicStroke(1)));
        add(this.selector);
        // Changes due to focus problems!! DZ
        this.selector.addActionListener(new ActionListener() {
            public void actionPerformed(final ActionEvent evt) {
                getSelector().transferFocus();
            }
        });
    }


    /**
     * Returns the selector component.
     *
     * @return Returns the selector.
     */
    protected final JComboBox getSelector()
    {
      return this.selector;
    }

    /**
     * Returns the selected stroke.
     *
     * @return the selected stroke.
     */
    public Stroke getSelectedStroke() {
        StrokeSample sample = (StrokeSample) this.selector.getSelectedItem();
        return sample.getStroke();
    }

}