package com.algomagic.atn;

import java.util.*;

public class BatchUpdate {

    private List _updates;

    public BatchUpdate( List updates ) {
	_updates = updates;
    }

    public BatchUpdate( ) {
	_updates = new ArrayList( );
    }

    public void addElementAttribute( ElementAttribute e ) {
	_updates.add( e );
    }

    public boolean isEmpty( ) {
	return _updates.isEmpty( );
    }


    public void apply( ) {
	for( Iterator i = _updates.iterator( ); i.hasNext( ); ) {
	    ElementAttribute e = (ElementAttribute)i.next( );
	    e.apply( );
	} 
    }


    public void undo( ) {
	for( Iterator i = _updates.iterator( ); i.hasNext( ); ) {
	    ElementAttribute e = (ElementAttribute)i.next( );
	    e.undo( );
	} 
    }


}