Porting XMLHighlighter class to ActionScript 3.
Posted by Luracast on Jul 4, 2006 in Blog, Examples, Flash 9 | 0 comments
XMLHighlighter generates color highlighted pretty printed HTML code for the given XML document, I have ported it from ActionScript 2 to ActionScript 3.
Here is what I learned during the process
- XML object in ActionScript 3 is different (It is ECMAScript for XML (E4X)).
- For backward compatibility we have XMLDocument class which is equalent to XML in Actionscript 3.
- In ActionScript 3 we need to keep the class inside Package container.
I replaced all “XML” to “XMLDocument” from the source, Moved my XMLHighlighter class inside blank Package, renamed it as XMLDocumentHighlighter. That’s all.
Here is the resulting class with usage example
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| /*
************************************************************
Developed by R.Arul Kumaran [[email protected]] *
for more code keep visiting [www.shockwave-india.com/blog] *
************************************************************
version 1.0 Last updated on 4 July, 2006
*/
/*
XMLHighlighter for ActionScript3 generates color highlighted pretty printed HTML code
*/
package
{
import flash.xml.*
class XMLDocumentHighlighter
{
public static var useCDATA : Boolean = true;
//_c: color string list
private static var _c : Object = {
tag : '0000FF', att : 'FF0000', txt : '000000', tgt : '990000'
};
//_fTag: get font begin tag
private static function _fTag (clr : String, content : String)
{
return "<font color='#" + clr + "'>" + content;
}
// _tf: font tag close string
private static var _tf : String = "</font>";
// public function
public static function highlight (x : XMLDocument) : String
{
//var x:XML;
var ignoreWhite = x.ignoreWhite;
var s : String = _fTag (_c .tag , '');
x.ignoreWhite = true;
if (x.nodeName == undefined)
{
if (x.xmlDecl != undefined)
{
s += x.createTextNode (x.xmlDecl) + '\r';
}
if (x.docTypeDecl != undefined)
{
s += x.createTextNode (x.docTypeDecl) + '\r';
}
s += _getHStr (x.firstChild, '', '');
} else
{
s += _getHStr (x, '', '');
}
x.ignoreWhite = ignoreWhite;
return "<pre>" + s + _tf + "</pre>";
}
private static function _getHStr (x, tab : String, r : String) : String
{
var s : String = '';
switch (x.nodeType)
{
//TEXT_NODE
case 3 :
//Is it a CDATA Node?
var xt : String = x.toString ();
if (useCDATA && (x.nodeValue.indexOf ('<') != - 1 || x.nodeValue.indexOf ('>') != - 1))
{
s = "<![CDATA[" + _fTag (_c .txt , '<b>' + xt + '</b>') + _tf + "]]>";
} else
{
s = _fTag (_c .txt , '<b>' + xt .split ('&').join ('&') + '</b>') + _tf ;
}
break;
//ELEMENT_NODE
case 1 :
default :
s = r + tab + '<' + _fTag (_c .tgt , x.nodeName) + _tf ;
for (var v in x.attributes)
{
s += _fTag (_c .tgt , " " + v ) + _tf + "="" + _fTag (_c .att , x.attributes [v ]) + _tf + """;
}
if (x.firstChild == null)
{
s += "/>";
} else
{
s += ">" + _getHStr (x.firstChild, tab + "\t", "\r");
if (x.lastChild.nodeType == 3)
{
s += "</";
} else
{
s += '\r' + tab + "</";
}
s += _fTag (_c .tgt , x.nodeName) + _tf + ">";
}
}
if (x.nextSibling != null)
{
s += _getHStr (x.nextSibling, tab , r );
}
return s ;
}
}
}
/*
//Usage:-
//copy this as file to the same folder as your FLA
//Usage Example:
var my_xml:XMLDocument=new XMLDocument('<a><b><c/></b></a>');
trace(XMLDocumentHighlighter.highlight(my_xml));
//trace output :
<pre><font color='#0000FF'><<font color='#990000'>a</font>>
<<font color='#990000'>b</font>>
<<font color='#990000'>c</font>/>
</<font color='#990000'>b</font>>
</<font color='#990000'>a</font>></font></pre>
*/ |
