flex | Mark Ledford's Web Dev Blog

AS3 htmlDecode htmlEncode xml hack

February 25th, 2009 markledford 11 comments

You’d think there would be a straight forward way to htmlEncode and htmlDecode strings in flash but there doesn’t seam to be any sort of built-in utility class that supports this. Oddly enough there isn’t one in Javascript either. Like this Javascript hack, here is a handy hack to pimp AS3′s native XML object instance to do the htmlEncoding/decoding for you.

Unfortunately this doesn’t work for many encoded characters like “í”, “ó”, “á”, and “ñ”. It seams the best route to robust html html encoding/decoding is to roll your own utility function like this.

Here is an AS3 Version:

//modified from http://www.cnblogs.com/laudy/articles/1186810.html
public static function htmlDecode(s:String):String {
var out:String = "";
if (s==null) return "";
//regex convert all numeric character references to regular chars
var matches:Array = s.match(/&#\d+;?/g);
for(var i:Number = 0; i < matches.length; i++){
var replacement:Object = String.fromCharCode((matches[i]).replace(/\D/g,""));
s = s.replace(/&#\d+;?/, replacement);
}
//convert all character entity references / HTML entities
var l:Number = s.length;
for (i=0; i<l; i++){
var ch:String = s.charAt(i);
if (ch == '&'){
var semicolonIndex:Number = s.indexOf(';', i+1);
if (semicolonIndex > 0) {
var entity:String = s.substring(i + 1, semicolonIndex);
switch (entity){
case 'quot': ch = String.fromCharCode(0x0022); break;
case 'amp': ch = String.fromCharCode(0x0026); break;
case 'lt': ch = String.fromCharCode(0x003c); break;
case 'gt': ch = String.fromCharCode(0x003e); break;
case 'nbsp': ch = String.fromCharCode(0x00a0); break;
case 'iexcl': ch = String.fromCharCode(0x00a1); break;
case 'cent': ch = String.fromCharCode(0x00a2); break;
case 'pound': ch = String.fromCharCode(0x00a3); break;
case 'curren': ch = String.fromCharCode(0x00a4); break;
case 'yen': ch = String.fromCharCode(0x00a5); break;
case 'brvbar': ch = String.fromCharCode(0x00a6); break;
case 'sect': ch = String.fromCharCode(0x00a7); break;
case 'uml': ch = String.fromCharCode(0x00a8); break;
case 'copy': ch = String.fromCharCode(0x00a9); break;
case 'ordf': ch = String.fromCharCode(0x00aa); break;
case 'laquo': ch = String.fromCharCode(0x00ab); break;
case 'not': ch = String.fromCharCode(0x00ac); break;
case 'shy': ch = String.fromCharCode(0x00ad); break;
case 'reg': ch = String.fromCharCode(0x00ae); break;
case 'macr': ch = String.fromCharCode(0x00af); break;
case 'deg': ch = String.fromCharCode(0x00b0); break;
case 'plusmn': ch = String.fromCharCode(0x00b1); break;
case 'sup2': ch = String.fromCharCode(0x00b2); break;
case 'sup3': ch = String.fromCharCode(0x00b3); break;
case 'acute': ch = String.fromCharCode(0x00b4); break;
case 'micro': ch = String.fromCharCode(0x00b5); break;
case 'para': ch = String.fromCharCode(0x00b6); break;
case 'middot': ch = String.fromCharCode(0x00b7); break;
case 'cedil': ch = String.fromCharCode(0x00b8); break;
case 'sup1': ch = String.fromCharCode(0x00b9); break;
case 'ordm': ch = String.fromCharCode(0x00ba); break;
case 'raquo': ch = String.fromCharCode(0x00bb); break;
case 'frac14': ch = String.fromCharCode(0x00bc); break;
case 'frac12': ch = String.fromCharCode(0x00bd); break;
case 'frac34': ch = String.fromCharCode(0x00be); break;
case 'iquest': ch = String.fromCharCode(0x00bf); break;
case 'Agrave': ch = String.fromCharCode(0x00c0); break;
case 'Aacute': ch = String.fromCharCode(0x00c1); break;
case 'Acirc': ch = String.fromCharCode(0x00c2); break;
case 'Atilde': ch = String.fromCharCode(0x00c3); break;
case 'Auml': ch = String.fromCharCode(0x00c4); break;
case 'Aring': ch = String.fromCharCode(0x00c5); break;
case 'AElig': ch = String.fromCharCode(0x00c6); break;
case 'Ccedil': ch = String.fromCharCode(0x00c7); break;
case 'Egrave': ch = String.fromCharCode(0x00c8); break;
case 'Eacute': ch = String.fromCharCode(0x00c9); break;
case 'Ecirc': ch = String.fromCharCode(0x00ca); break;
case 'Euml': ch = String.fromCharCode(0x00cb); break;
case 'Igrave': ch = String.fromCharCode(0x00cc); break;
case 'Iacute': ch = String.fromCharCode(0x00cd); break;
case 'Icirc': ch = String.fromCharCode(0x00ce ); break;
case 'Iuml': ch = String.fromCharCode(0x00cf); break;
case 'ETH': ch = String.fromCharCode(0x00d0); break;
case 'Ntilde': ch = String.fromCharCode(0x00d1); break;
case 'Ograve': ch = String.fromCharCode(0x00d2); break;
case 'Oacute': ch = String.fromCharCode(0x00d3); break;
case 'Ocirc': ch = String.fromCharCode(0x00d4); break;
case 'Otilde': ch = String.fromCharCode(0x00d5); break;
case 'Ouml': ch = String.fromCharCode(0x00d6); break;
case 'times': ch = String.fromCharCode(0x00d7); break;
case 'Oslash': ch = String.fromCharCode(0x00d8); break;
case 'Ugrave': ch = String.fromCharCode(0x00d9); break;
case 'Uacute': ch = String.fromCharCode(0x00da); break;
case 'Ucirc': ch = String.fromCharCode(0x00db); break;
case 'Uuml': ch = String.fromCharCode(0x00dc); break;
case 'Yacute': ch = String.fromCharCode(0x00dd); break;
case 'THORN': ch = String.fromCharCode(0x00de); break;
case 'szlig': ch = String.fromCharCode(0x00df); break;
case 'agrave': ch = String.fromCharCode(0x00e0); break;
case 'aacute': ch = String.fromCharCode(0x00e1); break;
case 'acirc': ch = String.fromCharCode(0x00e2); break;
case 'atilde': ch = String.fromCharCode(0x00e3); break;
case 'auml': ch = String.fromCharCode(0x00e4); break;
case 'aring': ch = String.fromCharCode(0x00e5); break;
case 'aelig': ch = String.fromCharCode(0x00e6); break;
case 'ccedil': ch = String.fromCharCode(0x00e7); break;
case 'egrave': ch = String.fromCharCode(0x00e8); break;
case 'eacute': ch = String.fromCharCode(0x00e9); break;
case 'ecirc': ch = String.fromCharCode(0x00ea); break;
case 'euml': ch = String.fromCharCode(0x00eb); break;
case 'igrave': ch = String.fromCharCode(0x00ec); break;
case 'iacute': ch = String.fromCharCode(0x00ed); break;
case 'icirc': ch = String.fromCharCode(0x00ee); break;
case 'iuml': ch = String.fromCharCode(0x00ef); break;
case 'eth': ch = String.fromCharCode(0x00f0); break;
case 'ntilde': ch = String.fromCharCode(0x00f1); break;
case 'ograve': ch = String.fromCharCode(0x00f2); break;
case 'oacute': ch = String.fromCharCode(0x00f3); break;
case 'ocirc': ch = String.fromCharCode(0x00f4); break;
case 'otilde': ch = String.fromCharCode(0x00f5); break;
case 'ouml': ch = String.fromCharCode(0x00f6); break;
case 'divide': ch = String.fromCharCode(0x00f7); break;
case 'oslash': ch = String.fromCharCode(0x00f8); break;
case 'ugrave': ch = String.fromCharCode(0x00f9); break;
case 'uacute': ch = String.fromCharCode(0x00fa); break;
case 'ucirc': ch = String.fromCharCode(0x00fb); break;
case 'uuml': ch = String.fromCharCode(0x00fc); break;
case 'yacute': ch = String.fromCharCode(0x00fd); break;
case 'thorn': ch = String.fromCharCode(0x00fe); break;
case 'yuml': ch = String.fromCharCode(0x00ff); break;
case 'OElig': ch = String.fromCharCode(0x0152); break;
case 'oelig': ch = String.fromCharCode(0x0153); break;
case 'Scaron': ch = String.fromCharCode(0x0160); break;
case 'scaron': ch = String.fromCharCode(0x0161); break;
case 'Yuml': ch = String.fromCharCode(0x0178); break;
case 'fnof': ch = String.fromCharCode(0x0192); break;
case 'circ': ch = String.fromCharCode(0x02c6); break;
case 'tilde': ch = String.fromCharCode(0x02dc); break;
case 'Alpha': ch = String.fromCharCode(0x0391); break;
case 'Beta': ch = String.fromCharCode(0x0392); break;
case 'Gamma': ch = String.fromCharCode(0x0393); break;
case 'Delta': ch = String.fromCharCode(0x0394); break;
case 'Epsilon': ch = String.fromCharCode(0x0395); break;
case 'Zeta': ch = String.fromCharCode(0x0396); break;
case 'Eta': ch = String.fromCharCode(0x0397); break;
case 'Theta': ch = String.fromCharCode(0x0398); break;
case 'Iota': ch = String.fromCharCode(0x0399); break;
case 'Kappa': ch = String.fromCharCode(0x039a); break;
case 'Lambda': ch = String.fromCharCode(0x039b); break;
case 'Mu': ch = String.fromCharCode(0x039c); break;
case 'Nu': ch = String.fromCharCode(0x039d); break;
case 'Xi': ch = String.fromCharCode(0x039e); break;
case 'Omicron': ch = String.fromCharCode(0x039f); break;
case 'Pi': ch = String.fromCharCode(0x03a0); break;
case ' Rho ': ch = String.fromCharCode(0x03a1); break;
case 'Sigma': ch = String.fromCharCode(0x03a3); break;
case 'Tau': ch = String.fromCharCode(0x03a4); break;
case 'Upsilon': ch = String.fromCharCode(0x03a5); break;
case 'Phi': ch = String.fromCharCode(0x03a6); break;
case 'Chi': ch = String.fromCharCode(0x03a7); break;
case 'Psi': ch = String.fromCharCode(0x03a8); break;
case 'Omega': ch = String.fromCharCode(0x03a9); break;
case 'alpha': ch = String.fromCharCode(0x03b1); break;
case 'beta': ch = String.fromCharCode(0x03b2); break;
case 'gamma': ch = String.fromCharCode(0x03b3); break;
case 'delta': ch = String.fromCharCode(0x03b4); break;
case 'epsilon': ch = String.fromCharCode(0x03b5); break;
case 'zeta': ch = String.fromCharCode(0x03b6); break;
case 'eta': ch = String.fromCharCode(0x03b7); break;
case 'theta': ch = String.fromCharCode(0x03b8); break;
case 'iota': ch = String.fromCharCode(0x03b9); break;
case 'kappa': ch = String.fromCharCode(0x03ba); break;
case 'lambda': ch = String.fromCharCode(0x03bb); break;
case 'mu': ch = String.fromCharCode(0x03bc); break;
case 'nu': ch = String.fromCharCode(0x03bd); break;
case 'xi': ch = String.fromCharCode(0x03be); break;
case 'omicron': ch = String.fromCharCode(0x03bf); break;
case 'pi': ch = String.fromCharCode(0x03c0); break;
case 'rho': ch = String.fromCharCode(0x03c1); break;
case 'sigmaf': ch = String.fromCharCode(0x03c2); break;
case 'sigma': ch = String.fromCharCode(0x03c3); break;
case 'tau': ch = String.fromCharCode(0x03c4); break;
case 'upsilon': ch = String.fromCharCode(0x03c5); break;
case 'phi': ch = String.fromCharCode(0x03c6); break;
case 'chi': ch = String.fromCharCode(0x03c7); break;
case 'psi': ch = String.fromCharCode(0x03c8); break;
case 'omega': ch = String.fromCharCode(0x03c9); break;
case 'thetasym': ch = String.fromCharCode(0x03d1); break;
case 'upsih': ch = String.fromCharCode(0x03d2); break;
case 'piv': ch = String.fromCharCode(0x03d6); break;
case 'ensp': ch = String.fromCharCode(0x2002); break;
case 'emsp': ch = String.fromCharCode(0x2003); break;
case 'thinsp': ch = String.fromCharCode(0x2009); break;
case 'zwnj': ch = String.fromCharCode(0x200c); break;
case 'zwj': ch = String.fromCharCode(0x200d); break;
case 'lrm': ch = String.fromCharCode(0x200e); break;
case 'rlm': ch = String.fromCharCode(0x200f); break;
case 'ndash': ch = String.fromCharCode(0x2013); break;
case 'mdash': ch = String.fromCharCode(0x2014); break;
case 'lsquo': ch = String.fromCharCode(0x2018); break;
case 'rsquo': ch = String.fromCharCode(0x2019); break;
case 'sbquo': ch = String.fromCharCode(0x201a); break;
case 'ldquo': ch = String.fromCharCode(0x201c); break;
case 'rdquo': ch = String.fromCharCode(0x201d); break;
case 'bdquo': ch = String.fromCharCode(0x201e); break;
case 'dagger': ch = String.fromCharCode(0x2020); break;
case 'Dagger': ch = String.fromCharCode(0x2021); break;
case 'bull': ch = String.fromCharCode(0x2022); break;
case 'hellip': ch = String.fromCharCode(0x2026); break;
case 'permil': ch = String.fromCharCode(0x2030); break;
case 'prime': ch = String.fromCharCode(0x2032); break;
case 'Prime': ch = String.fromCharCode(0x2033); break;
case 'lsaquo': ch = String.fromCharCode(0x2039); break;
case 'rsaquo': ch = String.fromCharCode(0x203a); break;
case 'oline': ch = String.fromCharCode(0x203e); break;
case 'frasl': ch = String.fromCharCode(0x2044); break;
case 'euro': ch = String.fromCharCode(0x20ac); break;
case 'image': ch = String.fromCharCode(0x2111); break;
case 'weierp': ch = String.fromCharCode(0x2118); break;
case 'real': ch = String.fromCharCode(0x211c); break;
case 'trade': ch = String.fromCharCode(0x2122); break;
case 'alefsym': ch = String.fromCharCode(0x2135); break;
case 'larr': ch = String.fromCharCode(0x2190); break;
case 'uarr': ch = String.fromCharCode(0x2191); break;
case 'rarr': ch = String.fromCharCode(0x2192); break;
case 'darr': ch = String.fromCharCode(0x2193); break;
case 'harr': ch = String.fromCharCode(0x2194); break;
case 'crarr': ch = String.fromCharCode(0x21b5); break;
case 'lArr': ch = String.fromCharCode(0x21d0); break;
case 'uArr': ch = String.fromCharCode(0x21d1); break;
case 'rArr': ch = String.fromCharCode(0x21d2); break;
case 'dArr': ch = String.fromCharCode(0x21d3); break;
case 'hArr': ch = String.fromCharCode(0x21d4); break;
case 'forall': ch = String.fromCharCode(0x2200); break;
case 'part': ch = String.fromCharCode(0x2202); break;
case 'exist': ch = String.fromCharCode(0x2203); break;
case 'empty': ch = String.fromCharCode(0x2205); break;
case 'nabla': ch = String.fromCharCode(0x2207); break;
case 'isin': ch = String.fromCharCode(0x2208); break;
case 'notin': ch = String.fromCharCode(0x2209); break;
case 'ni': ch = String.fromCharCode(0x220b); break;
case 'prod': ch = String.fromCharCode(0x220f); break;
case 'sum': ch = String.fromCharCode(0x2211); break;
case 'minus': ch = String.fromCharCode(0x2212); break;
case 'lowast': ch = String.fromCharCode(0x2217); break;
case 'radic': ch = String.fromCharCode(0x221a); break;
case 'prop': ch = String.fromCharCode(0x221d); break;
case 'infin': ch = String.fromCharCode(0x221e); break;
case 'ang': ch = String.fromCharCode(0x2220); break;
case 'and': ch = String.fromCharCode(0x2227); break;
case 'or': ch = String.fromCharCode(0x2228); break;
case 'cap': ch = String.fromCharCode(0x2229); break;
case 'cup': ch = String.fromCharCode(0x222a); break;
case 'int': ch = String.fromCharCode(0x222b); break;
case 'there4': ch = String.fromCharCode(0x2234); break;
case 'sim': ch = String.fromCharCode(0x223c); break;
case 'cong': ch = String.fromCharCode(0x2245); break;
case 'asymp': ch = String.fromCharCode(0x2248); break;
case 'ne': ch = String.fromCharCode(0x2260); break;
case 'equiv': ch = String.fromCharCode(0x2261); break;
case 'le': ch = String.fromCharCode(0x2264); break;
case 'ge': ch = String.fromCharCode(0x2265); break;
case 'sub': ch = String.fromCharCode(0x2282); break;
case 'sup': ch = String.fromCharCode(0x2283); break;
case 'nsub': ch = String.fromCharCode(0x2284); break;
case 'sube': ch = String.fromCharCode(0x2286); break;
case 'supe': ch = String.fromCharCode(0x2287); break;
case 'oplus': ch = String.fromCharCode(0x2295); break;
case 'otimes': ch = String.fromCharCode(0x2297); break;
case 'perp': ch = String.fromCharCode(0x22a5); break;
case 'sdot': ch = String.fromCharCode(0x22c5); break;
case 'lceil': ch = String.fromCharCode(0x2308); break;
case 'rceil': ch = String.fromCharCode(0x2309); break;
case 'lfloor': ch = String.fromCharCode(0x230a); break;
case 'rfloor': ch = String.fromCharCode(0x230b); break;
case 'lang': ch = String.fromCharCode(0x2329); break;
case 'rang': ch = String.fromCharCode(0x232a); break;
case 'loz': ch = String.fromCharCode(0x25ca); break;
case 'spades': ch = String.fromCharCode(0x2660); break;
case 'clubs': ch = String.fromCharCode(0x2663); break;
case 'hearts': ch = String.fromCharCode(0x2665); break;
case 'diams': ch = String.fromCharCode(0x2666); break;
default: ch = ''; break;
}
i = semicolonIndex;
}
}
out += ch;
}
return out;
}

Categories: flex Tags:

Multipart form data in flash

February 20th, 2009 markledford 5 comments

Eugene has a handy MultipartURLLoader class to do the leg work of sending multipart form data from flash.

Note that because it uses:
urlRequest.requestHeaders.push( new URLRequestHeader( ‘Cache-Control’, ‘no-cache’ ) );

You may get SecurityError:
Error #2044: Unhandled securityError:. text=Error #2170: Security sandbox violation: http://domain1.com/your.swf cannot send HTTP headers to http://domain2.com/yourscript.php.

You may need to add a variation of <allow-http-request-headers-from domain=”*” headers=”*”/> to your crossdomain.xml file or comment out that line. I chose the latter as I don’t think its neccessary in a POST call.

Categories: flex Tags: actionscript

javascript injection in AS3

January 20th, 2009 markledford No comments

Pretty useful method of storing Javascript inside of a swf for use with ExternalInterface. The novel part is maintaining the formatted Javascript inside of an xml object, check it out here. Thanks to Derek for the link.

Categories: flex Tags: actionscript

Why some AS3 swfs work stand alone but fail to load into other swfs

August 13th, 2008 markledford 27 comments

Most developers who create standalone swfs have some standard instantiation code in their class constructor, something like this:

stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;

This works fine when the swf is embedded on a page directly as the “stage” property will be available instantaneously.
When this swf is loaded into another swf however, say like this:

var loader:Loader = new Loader();
addChild(loader);
loader.load(new URLRequest("http://widget.meebo.com/mcr.swf?id=RQYRkTseLc"));

It generates the infamous and ambiguous: TypeError: Error #1009: Cannot access a property or method of a null object reference.
I’m pretty sure this is because when a swf is loaded into another swf, it’s class constructor is called to create the object before it is even added to it’s parent (the Loader object).
Thus the stage property is undefined, which throws the error, which kills the call stack including what ever else was in the constructor after the stage reference.
I’d kind of consider this a bug in the flash architecture.

The work around to insure your swf is compatible with loading into other swfs:
If the stage references are just the above, you can throw a try/catch around them as they would probably get set by the loader anyways:

try {
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
} catch(er:Error) { };

or just ensure the property is available:

if (stage){
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
}

or, if there is setup that absolutely requires the stage reference, put this in your constructor:

Constructor(){
if (stage){
onAddedToStage();
} else {
addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
}

private function onAddedToStage(evt:Event=null):void {
removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
initApp();
}

Categories: flex Tags:

Using the “include” directive to update multiple classes

February 6th, 2008 markledford No comments

I recently subclassed Flex’s Canvas to utilize my own custom scrollbars (what a pain!) and soon found I needed to do the same with the Box container (VBox, HBox). Due to the clean OOP nature of these components my overrides and implementation turned out exactly the same for my CustomScrollBarCanvas and CustomScrollBarBox. After a few refactoring sessions copying and pasting my changes to both subclasses I ended up moving all my code to a separate include file and its worked out beautifully with Flex still checking the code during incremental compile:

public class CustomScrollBarCanvas extends Canvas {
public function CustomScrollBarCanvas(){
super();
}
include “CustomScrollBarImplementation.as”
}

public class CustomScrollBarCanvas extends Box {
public function CustomScrollBarCanvas(){
super();
}
include “CustomScrollBarImplementation.as”
}

The Actionscript “include” directive is useful when you have a variable or several lines of code that are mirrored in several classes and you want to maintain that code in a central file. Flex and other frameworks use it commonly to write out framework version numbers on all their classes explicitly during compile time. Flex also uses it to write out groups of meta style tags by type (TextStyles.as, BorderStyles.as, etc) into the components that use them. Its really quite ingenious for upkeep but really simple to implement. (FYI in AS3 you no longer prepend the include statement with a “#”)

Categories: actionscript, flex Tags: actionscript, flex

GoogleReader and some great flash / flex blog entries

January 31st, 2008 markledford No comments

Google Reader has been the perfect resource for me to manage all the blogs (flash and otherwise) that I read everyday. I can categorize my feeds by label, view an aggregated feed of those feeds chronologically, and it even keeps track of new entries. I’ve even found some great new flash blogs via its recommendation system (I’m up to 40 now :O).

A couple entries of interest I’ve read lately and wanted to share:

Eric Feminella’s great Quick Tip blog posts:
Using a parameter class instead of an anonymous object to replace unwieldy method parameters
Using fully qualified paths to define custom event constants to avoid conflicts

This one deserves a post of its own when I have some time to really tinker with it but Metal Hurlant who created the AS3 Crypto Library has created an AS3 run-time compiler written in AS3 by porting parts of the Tamarin project’s “esc” compiler. You can create functions and even classes during runtime. Check out the live demo! Its an exciting time to be a flash developer.

Categories: actionscript, flex Tags:

The entity name must immediately follow the ‘&’ in the entity reference

January 30th, 2008 markledford 38 comments

If you’ve ever written code in a binding tag and gotten a special character error try html-encoding the character like you’d do if you were encoding regular text:

Error:

<mx:TextInput text="{(_feed.url && !_feed.isTemporary)?_feed.url:'Save Feed to generate URL'}" />

Works:

<mx:TextInput text="{(_feed.url && !_feed.isTemporary)?_feed.url:'Save Feed to generate URL'}" />

It makes sense after the fact but before you actually do it, it just looks odd to html-encode your actionscript.

Categories: flex Tags: flex

flex debugging adding ?debug=true to your debug file path

January 18th, 2008 markledford 5 comments

I’ve exhausted my resources trying to figure out how to disable Flex from adding the querystring variable ?debug=true to whatever file path you use when launching your app in debug mode. I have my debug path pointing to an html file with a custom html embed so this flag isn’t being used by it. It is however blocking me from appending my own variables which get encoded and made unusable :/

The only thing I came up with in google is this semi-related reference from: http://livedocs.adobe.com/labs/flex3/html/help.html?content=apache_3.html

“Flex Builder appends ?debug=true to the URL when it launches the browser. This query string parameter triggers a compilation with the debug compiler options enabled.”

Does any of the 0 people that read my blog have an answer or suggestion? I’m assuming a solution could be found regarding the use of “query string parameter overrides” and the flex-config.xml file. The investigation continues…

Categories: flex Tags: flex

Using the class path resolution to your advantage

January 13th, 2008 markledford No comments

Heres a interesting, albeit questionable hack when extending flex classes that cockblock you with a private property or require you to extend several classes when you just want to tweak 1 line of insignificant code in the component.

You can grab the class you want to tweak and copy it to your project folder, mirroring its package with the appropriate folders. When classes get resolved your project folder gets checked before default system paths so your edited version will get compiled in.

I don’t recommend doing this, probably ever, but its been my best friend when I just wanted to tweak that dark 1 pixel line that the Panel component’s title bar receives via TitleBackground without making it a long and convoluted proccess. I don’t know how well this will work with Flex 3′s framework caching but its nice to know this quick and dirty method is there.

Categories: actionscript, flex Tags: actionscript, flex

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