/**
* This class is a cross-browser StringBuffer, as in Java(tm).
* The dominant versions of Firefox and Opera (versions 1.x and up) have fixed the string concatenation
* problem with the + and += operator that
* has plagued Internet Explorer v6 and less (and perhaps v7), and Mozilla web browsers
* (including Netscape 7 and below). The string concatenation problem is very severe on these browsers.
* This StringBuffer class provides string concatenation on Firefox and Opera that comes very close to their
* native performance, while giving a performance boost of about six-fold to Internet Explorer, plus
* more gains in overall JavaScript application speed by avoiding unnecessary memory allocation.
* Testing results show that this class strikes an optimal balance, in a single class, between optimizing String
* concatenation for Internet Explorer/some other web browsers and delivering the extra-fast performance
* offered by Firefox and Opera.
*
* Please note that this class is highly optimized for execution speed. Take great care before altering its code.
*
* Ellen Hudson-Snyder,
* Elvin Vedar,
* Christopher M. Balz.
*
CVS Version Info:
* $Id: StringBuffer.js,v 1.5 2005/12/27 01:05:54 cbalz Exp $
*
* @inherits-from AbstractStringBuffer
* @object-prop string strS A string to be concatenated with the += operator.
* @object-prop string arrStrings An array to be concatenated into a string (workaround for browsers that
* have problems efficiently executing the += operator.
* @author Team GigaToasted (Fall-2005-CMU-NASA/Google-Practicum Subteam)
* @version 1.0
*
*/
StringBuffer.prototype = new AbstractStringBuffer();
/**
* Create a StringBuffer class, switching
* methods depending if we are running in an environment
* that does not execute the += operator efficiently.
*/
function StringBuffer() {
if (this.booIsFixed) {
this.strS = "";
this.append = StringBuffer_appendPlusEq;
this.toString = StringBuffer_toStringPlusEq;
} else {
this.arrStrings = [];
}
}
/**
* This method appends to the string with the += operator.
* @param pArrStrings Array An array containing the string or strings to append.
*/
function StringBuffer_appendPlusEq( pArrStrings ) {
this.strS += pArrStrings.join( "" );
}
/**
* This method returns a string that was
* concatenated with the += operator.
* @return string The concatenated string.
*/
function StringBuffer_toStringPlusEq() {
return this.strS;
};