fontdisplayfield.java

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/* ===================================================
 * JCommon : a free general purpose Java class library
 * ===================================================
 *
 * Project Info:  http://www.jfree.org/jcommon/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery 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.
 *
 * ---------------------
 * FontDisplayField.java
 * ---------------------
 * (C) Copyright 2000-2003, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: FontDisplayField.java,v 1.3 2003/06/12 16:54:39 mungady Exp $
 *
 * Changes (from 26-Oct-2001)
 * ----------------------------------
 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
 * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 *
 */

package org.jfree.ui;

import java.awt.Font;

import javax.swing.JTextField;

/**
 * A field for displaying a font selection.  The display field itself is read-only, to the developer
 * must provide another mechanism to allow the user to change the font.
 *
 * @author David Gilbert
 */
public class FontDisplayField extends JTextField {

    /** The current font. */
    private Font displayFont;

    /**
     * Standard constructor - builds a FontDescriptionField initialised with the specified font.
     *
     * @param font  the font.
     */
    public FontDisplayField(Font font) {
        super("");
        setDisplayFont(font);
        setEnabled(false);
    }

    /**
     * Returns the current font.
     *
     * @return the font.
     */
    public Font getDisplayFont() {
        return this.displayFont;
    }

    /**
     * Sets the font.
     *
     * @param font  the font.
     */
    public void setDisplayFont(Font font) {
        this.displayFont = font;
        setText(fontToString(displayFont));
    }

    /**
     * Returns a string representation of the specified font.
     *
     * @param font  the font.
     *
     * @return a string describing the font.
     */
    private String fontToString(Font font) {
        if (font != null) {
            return font.getFontName() + ", " + font.getSize();
        }
        else {
            return "No font selected.";
        }
    }

}