strokechooserpanel.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 106 行

/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 * 
 * Project Info:  http://www.jfree.org/jcommon/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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * -----------------------
 * StrokeChooserPanel.java
 * -----------------------
 * (C) Copyright 2000-2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Dirk Zeitz;
 *
 * $Id: StrokeChooserPanel.java,v 1.3 2005/06/01 14:12:29 taqua Exp $
 *
 * 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);
 *
 */

package org.jfree.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.
 *
 * @author David Gilbert
 */
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(final StrokeSample current, final 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 selector;
    }
    
    /**
     * Returns the selected stroke.
     *
     * @return the selected stroke.
     */
    public Stroke getSelectedStroke() {
        final StrokeSample sample = (StrokeSample) this.selector.getSelectedItem();
        return sample.getStroke();
    }

}