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package com.hfg.math.units;


import com.hfg.util.StringUtil;

import java.util.HashMap;
import java.util.Map;

//------------------------------------------------------------------------------
/**
 * Enumeration of angle measurement units.
 *
 * @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 class AngleUnits
{
   private static Map sInstanceMap = new HashMap<>();

   public static final AngleUnits degrees     = new AngleUnits("degrees",    "deg");
   public static final AngleUnits radians     = new AngleUnits("radians",    "rad");


   private String mName;
   private String mAbbrev;


   //---------------------------------------------------------------------------
   private AngleUnits(String inName, String inAbbrev)
   {
      mName = inName;
      mAbbrev = inAbbrev;

      sInstanceMap.put(mName.toLowerCase(), this);
      sInstanceMap.put(mAbbrev.toLowerCase(), this);
   }

   //---------------------------------------------------------------------------
   public String name()
   {
      return mName;
   }

   //---------------------------------------------------------------------------
   public String abbrev()
   {
      return mAbbrev;
   }

   //---------------------------------------------------------------------------
   @Override
   public String toString()
   {
      return name();
   }


   //---------------------------------------------------------------------------
   public static AngleUnits valueOf(String inString)
   {
      return StringUtil.isSet(inString) ? sInstanceMap.get(inString.toLowerCase()) : null;
   }

}