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com.hfg xml, html, svg, and bioinformatics utility library
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package com.hfg.html.attribute;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import com.hfg.html.HTML;

//------------------------------------------------------------------------------
/**
 * Enum-like shape class
 *
 * @author J. Alex Taylor, hairyfatguy.com
 */
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// 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
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------

public final class Shape implements Serializable
{

    private String mName;
    private int    mIndex;

    private static List sList = new ArrayList(3);

    public static final Shape RECT    = new Shape("rect");
    public static final Shape CIRCLE  = new Shape("circle");
    public static final Shape POLY    = new Shape("poly");

    //###########################################################################
    // CONSTRUCTORS
    //###########################################################################

    //--------------------------------------------------------------------------
    private Shape(String inName)
    {
        mName = inName;
        mIndex = sList.size();
        sList.add(this);
    }

    //###########################################################################
    // PUBLIC METHODS
    //###########################################################################

    //--------------------------------------------------------------------------
    public final String toString()
    {
        return mName;
    }

    //--------------------------------------------------------------------------
    public final String getHTMLAttributeName()
    {
        return HTML.SHAPE;
    }


    //--------------------------------------------------------------------------
    public final int hashCode()
    {
        return super.hashCode();
    }

    //--------------------------------------------------------------------------
    public final boolean equals(Object inObj)
    {
        Shape o2 = (Shape) inObj;
        return (mIndex == o2.mIndex);
    }

    //--------------------------------------------------------------------------
    /**
     * This method is called after de-serialization, allowing the object
     * to nominate a replacement object to be used in the output
     * graph instead of this object. We don't want multiple objects of each type
     * to exist in a target VM, so instances replace themselves with
     * local objects.
     */
    private Object readResolve()
    {
        return sList.get(mIndex);
    }
}