/*
 * SimplyHTML, a word processor based on Java, HTML and CSS
 * Copyright (C) 2002 Ulrich Hilger
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package com.lightdev.app.shtm;

import javax.swing.text.AttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.html.CSS;
import javax.swing.text.html.HTML;

/**
 * <p>Maps HTML and CSS attributes to their equivalents to
 * compensate discrepancies in HTML and CSS rendering of
 * various different view environments.</p>
 *
 * <p>Introduced in stage 5 this class only contains hard wired
 * fixes to certain discrepancies. Should there come up an increased
 * number of necessary fixes in future stages, a more generic way
 * of mapping (such as through a Hashtable of from/to values), etc.
 * will be done.</p>
 *
 * @author Ulrich Hilger
 * @author Light Development
 * @author <a href="http://www.lightdev.com">http://www.lightdev.com</a>
 * @author <a href="mailto:info@lightdev.com">info@lightdev.com</a>
 * @author published under the terms and conditions of the
 *      GNU General Public License,
 *      for details see file gpl.txt in the distribution
 *      package of this software
 *
 * 
 */
class AttributeMapper extends SimpleAttributeSet {
    public static final int toCSS = 0;
    public static final int toHTML = 1;
    public static final int toJava = 2;

    public AttributeMapper() {
        super();
    }

    public AttributeMapper(final AttributeSet a) {
        super(a);
    }

    public AttributeSet getMappedAttributes(final int direction) {
        switch (direction) {
            case toCSS:
                mapToCSSAttributes();
                break;
            case toHTML:
                mapToHTMLAttributes();
                break;
            case toJava:
                mapToJavaAttributes();
                break;
        }
        return this;
    }

    private void mapToCSSAttributes() {
        final Object cssFontSize = getAttribute(CSS.Attribute.FONT_SIZE);
        if (cssFontSize != null) {
            final int fontNumber = Integer.parseInt(cssFontSize.toString());
            addAttribute(CSS.Attribute.FONT_SIZE, SHTMLPanelImpl.FONT_SIZES[fontNumber - 1] + "pt");
        }
        mapToHTMLAttributes();
    }

    private void mapToHTMLAttributes() {
        final Object cssFontFamily = getAttribute(CSS.Attribute.FONT_FAMILY);
        if (cssFontFamily != null) {
            if (cssFontFamily.toString().equalsIgnoreCase("SansSerif")) {
                addAttribute(CSS.Attribute.FONT_FAMILY, "SansSerif, Sans-Serif");
            }
            else if (cssFontFamily.toString().contains("Monospaced")) {
                addAttribute(CSS.Attribute.FONT_FAMILY, "Monospace, Monospaced");
            }
        }
    }

    private void mapToJavaAttributes() {
        final Object htmlFontFace = getAttribute(HTML.Attribute.FACE);
        final Object cssFontFamily = getAttribute(CSS.Attribute.FONT_FAMILY);
        if (htmlFontFace != null) {
            if (cssFontFamily != null) {
                removeAttribute(HTML.Attribute.FACE);
                if (cssFontFamily.toString().contains("Sans-Serif")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "SansSerif");
                }
                else if (cssFontFamily.toString().contains("Monospace")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "Monospaced");
                }
            }
            else {
                removeAttribute(HTML.Attribute.FACE);
                if (htmlFontFace.toString().contains("Sans-Serif")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "SansSerif");
                }
                else if (htmlFontFace.toString().contains("Monospace")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "Monospaced");
                }
                else {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, htmlFontFace.toString());
                }
            }
        }
        else {
            if (cssFontFamily != null) {
                if (cssFontFamily.toString().contains("Sans-Serif")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "SansSerif");
                }
                else if (cssFontFamily.toString().contains("Monospace")) {
                    Util.styleSheet().addCSSAttribute(this, CSS.Attribute.FONT_FAMILY, "Monospaced");
                }
            }
        }
    }
}
