uk.ac.ed.ph.snuggletex.dombuilding.MathComplexCommandHandler Maven / Gradle / Ivy

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/* $Id: MathComplexCommandHandler.java 525 2010-01-05 14:07:36Z davemckain $
 *
 * Copyright (c) 2010, The University of Edinburgh.
 * All Rights Reserved
 */
package uk.ac.ed.ph.snuggletex.dombuilding;

import uk.ac.ed.ph.snuggletex.internal.DOMBuilder;
import uk.ac.ed.ph.snuggletex.internal.SnuggleParseException;
import uk.ac.ed.ph.snuggletex.tokens.ArgumentContainerToken;
import uk.ac.ed.ph.snuggletex.tokens.CommandToken;

import org.w3c.dom.Element;

/**
 * Handles complex Math commands (i.e. ones taking arguments) that map very easily onto MathML
 * elements where each argument becomes a child element of the resulting MathML container.
 *
 * @author David McKain
 * @version $Revision: 525 $
 */
public final class MathComplexCommandHandler implements CommandHandler {

  private final String elementName;

  public MathComplexCommandHandler(final String elementName) {
    this.elementName = elementName;
  }

  public void handleCommand(DOMBuilder builder, Element parentElement, CommandToken token)
      throws SnuggleParseException {
    Element result = builder.appendMathMLElement(parentElement, elementName);
    for (ArgumentContainerToken argument : token.getArguments()) {
      builder.handleMathTokensAsSingleElement(result, argument);
    }
  }
}