colorcomboboxmodel.java

报表设计软件,很好的

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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.
 *
 * ------------------------------
 * ColorComboBoxModel.java
 * ------------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: ColorComboBoxModel.java,v 1.2 2004/04/20 18:54:42 taqua Exp $
 *
 * Changes
 * -------------------------
 * 25.10.2003 : Initial version
 *
 */

package org.jfree.designer.propertyeditors;

import java.awt.Color;
import javax.swing.DefaultComboBoxModel;

public final class ColorComboBoxModel
        extends DefaultComboBoxModel
{
  public static final class ColorCarrier
  {
    private final Color color;
    private final String name;
    private final boolean predefined;

    protected ColorCarrier (final Color color, final String name,
                            final boolean predefined)
    {
      this.color = color;
      this.name = name;
      this.predefined = predefined;
    }

    public final Color getColor ()
    {
      return color;
    }

    public final String getName ()
    {
      return name;
    }

    public final boolean isPredefined ()
    {
      return predefined;
    }

    public final boolean equals (final Object o)
    {
      if (this == o)
      {
        return true;
      }
      if (!(o instanceof ColorCarrier))
      {
        return false;
      }

      final ColorCarrier colorCarrier = (ColorCarrier) o;

      if (!color.equals(colorCarrier.color))
      {
        return false;
      }

      return true;
    }

    public final int hashCode ()
    {
      return color.hashCode();
    }
  }

  private ColorCarrier customColor;

  /**
   * Constructs an empty DefaultComboBoxModel object.
   */
  public ColorComboBoxModel ()
  {
    addElement(new ColorCarrier(Color.black, "black", true));
    addElement(new ColorCarrier(Color.blue, "blue", true));
    addElement(new ColorCarrier(Color.cyan, "cyan", true));
    addElement(new ColorCarrier(Color.darkGray, "dark gray", true));
    addElement(new ColorCarrier(Color.gray, "gray", true));
    addElement(new ColorCarrier(Color.green, "green", true));
    addElement(new ColorCarrier(Color.lightGray, "light gray", true));
    addElement(new ColorCarrier(Color.magenta, "magenta", true));
    addElement(new ColorCarrier(Color.orange, "orange", true));
    addElement(new ColorCarrier(Color.pink, "pink", true));
    addElement(new ColorCarrier(Color.red, "red", true));
    addElement(new ColorCarrier(Color.white, "white", true));
    addElement(new ColorCarrier(Color.yellow, "yellow", true));
  }

  public final void setCustomColor (final Color color)
  {
    if (color == null)
    {
      if (customColor != null)
      {
        removeElement(customColor);
      }
      customColor = null;
      setSelectedItem(null);
      return;
    }

    final int index = indexOf(color);
    if (index != -1)
    {
      if (customColor != null)
      {
        removeElement(customColor);
      }
      customColor = null;
      setSelectedItem(getElementAt(index));
      return;
    }
    customColor = new ColorCarrier(color, encodeColor(color), false);
    setSelectedItem(customColor);
  }

  public final Color getSelectedColor ()
  {
    final ColorCarrier cc = (ColorCarrier) getSelectedItem();
    if (cc == null)
    {
      return null;
    }
    return cc.getColor();
  }

  public final String encodeColor (final Color c)
  {
    // no defined constant color, so this must be a user defined color
    final String color = Integer.toHexString(c.getRGB() & 0x00ffffff);
    final StringBuffer retval = new StringBuffer(7);
    retval.append("#");

    final int fillUp = 6 - color.length();
    for (int i = 0; i < fillUp; i++)
    {
      retval.append("0");
    }

    retval.append(color);
    return retval.toString();
  }

  public final int indexOf (final Color color)
  {
    for (int i = 0; i < getSize(); i++)
    {
      final ColorCarrier cc = (ColorCarrier) getElementAt(i);
      if (cc.getColor().equals(color))
      {
        return i;
      }
    }
    return -1;
  }
}