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/*
* Copyright (c) 1997 - 2016
* Actelion Pharmaceuticals Ltd.
* Gewerbestrasse 16
* CH-4123 Allschwil, Switzerland
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
*    list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
* 3. Neither the name of the the copyright holder nor the
*    names of its contributors may be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/

package com.actelion.research.chem;

import com.actelion.research.chem.reaction.ReactionArrow;

public class DrawingObjectFactory
{
	private DrawingObjectFactory() {}

	public static AbstractDrawingObject createObject(String descriptor) {
		final String START = AbstractDrawingObject.DESCRIPTOR_START+AbstractDrawingObject.DESCRIPTOR_TYPE;
	    if (!descriptor.startsWith(START)
	     || !descriptor.endsWith(AbstractDrawingObject.DESCRIPTOR_END))
	        return null;

	    int index = descriptor.indexOf('\"', START.length());
	    if (index == -1)
	    	return null;

	    final String type = descriptor.substring(START.length(), index);
	    final String detail = descriptor.substring(START.length()+type.length()+1,
				 								   descriptor.length()-AbstractDrawingObject.DESCRIPTOR_END.length());
	    
	    if (type.equals(ReactionArrow.TYPE_STRING))
	        return new ReactionArrow(detail);
	    if (type.equals(TextDrawingObject.TYPE_STRING))
	        return new TextDrawingObject(detail);
	
	    return null;
	    }
	}