Abdul Qabiz's Blog from India - Latest Comments in Flex Component that injects Javascript in HTML host

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Thu, 28 Jul 2011 05:04:56 -0000

That's awesome! Keep it up.

Re: Flex Component that injects Javascript in HTML host

Giles Roadnight — Sat, 16 Jul 2011 06:39:41 -0000

I love this. It makes what I was trying to do much simpler and neater:

http://blog.giles.roadnight...

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Mon, 10 Jan 2011 11:11:08 -0000

Could that be because of size limit in ExternalInterface API?

Re: Flex Component that injects Javascript in HTML host

px87 — Thu, 09 Dec 2010 23:09:17 -0000

Hi Abdul! thanks for the code, I tested it on flex 4 and works great!!

I have a cuestion... I have a big class written in javascript (430 lines), I tested it with your code but it doesn't work, do you believe that it not works because is a big string?

Greetings.

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Tue, 15 Sep 2009 11:08:31 -0000

I tested my work with IE6, but yeah I might have missed this particulare use-case. You can modify the code to send a long string in chunks and then run the js code?

Re: Flex Component that injects Javascript in HTML host

Gareth Arch — Sun, 13 Sep 2009 22:24:22 -0000

Arg! Came across this same issue this weekend (figured I'd give this a try with my latest project at work). We're currently using IE6 so I'm running across the URL length limitation. I've been trying trim down everything that's unnecessary, but IE6 still keeps catching me with too much junk in the URL. Maybe I'll try some kind of trimming function for my JS. I'm trying to contain the JS within the Flex project, but in IE6, that's been proving difficult.

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Thu, 25 Jun 2009 00:13:55 -0000

@syeddiwan: Sorry for late response, I believe, you can capture events (from browser) when it's going to close and then let flex know about it. Now browser-unload event doesn't work consistenly in all browsers, in my opinion, hence I would rather rely on different approach.

1) Capture browser's unload event and do the cleanup (saving data, closing session, etc).
2) Warn user when he tries to close the browser, request him to save, exit or logoff using provided control in user-interface?
3) Maintain a persistent connection using sockets or xmlsocket, now that might be some work and requires server-side infrastructure.

#1 might not work in all browsers and #3 might be little too much for simple things. I see, #2 can be used to and it's safe and sound.

BTW! What you plan to do? I mean, a lot of people are generally confused with things "sessions" and "flex".

-abdul

I believe, you can

Re: Flex Component that injects Javascript in HTML host

syeddiwan — Sat, 20 Jun 2009 02:50:26 -0000

Hai Abdul :-

it's very nice one,Right now i am doing session based flex application,so while closing the browser i need to pass the flex event,can u please guide me,
thanks in advance

Re: Flex Component that injects Javascript in HTML host

Patrice — Thu, 20 Nov 2008 21:22:01 -0000

hi,
nevermind. i had just named the file differently from the class. it's all fixed now. thanks for the code!

Re: Flex Component that injects Javascript in HTML host

Patrice — Thu, 20 Nov 2008 21:16:34 -0000

hi,
so i fixed the problem that said it could not resolve to a component implementation (i think), by using but now it has a problem with "packages cannot be nested" in javascript.as
do you know what i could be doing wrong?
thanks!

Re: Flex Component that injects Javascript in HTML host

Patrice — Thu, 20 Nov 2008 19:53:06 -0000

hi,
thanks for this code. i'm trying to integrate multiple javascript files into a flex application. i copied the code from your javascript.as file and tried to use the javascript tag in a separate mxml component file but it didn't work. it says that it could not resolve to a component implementation.
do you know what i could be doing wrong?
hopefully you're still getting messages about comments from this post!
thanks!

Re: Flex Component that injects Javascript in HTML host

Adam — Sun, 09 Nov 2008 19:40:07 -0000

Would this work with the moteDaemon (http://sourceforge.net/proj...
I keep getting:
SecurityError: Error #2051: Security sandbox violation:
errors with this example.

Re: Flex Component that injects Javascript in HTML host

Mark — Wed, 13 Jun 2007 22:47:02 -0000

Hi,
I noticed this very peculiar behaviour:
try putting this in a javascript function and execute it as you said:
alert ("aaaaaaaabbaaaaasdddddddddddd2aaaaaaaaaaaaaaa1sasaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1");
I got differing results in different browsers. It basically does not work in IE6. All other javascript functions don't work also if on the same flex app or html page.
However this works in IE7 and Firefox. It only works in IE6 if the piece of code above is put into a normal html page and not executed through Flex.
wondering what's going on and if there is a workaround to the limit of characters in a string

Re: Flex Component that injects Javascript in HTML host

judah — Fri, 08 Jun 2007 05:58:44 -0000

This is sweet! Do you know what browsers this works in?

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Tue, 05 Jun 2007 12:04:39 -0000

@Aneesh: Put JavaScript.as in com/abdulqabiz/utils folder inside your project. Then you need import it or declare it in xml namespace
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:utils="com.abdulqabiz.utils.*" ....
If you are using JavaScript in ActionScript, import it:-
import com.abdulqabiz.utils.JavaScript;

Re: Flex Component that injects Javascript in HTML host

Aneesh — Mon, 04 Jun 2007 13:07:21 -0000

hi abdul...
i am using eclipse with flex plugin...but i get an error saying "could not resolve to component implentation....where should i put JavaScript.as that u have mentioned and how should i run it in eclipse..

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Mon, 05 Mar 2007 16:36:46 -0000

Thanks Joan,
I am not very good in RegExp, I have fixed it anyway. I am going to sit down and write down all the use-cases and write proper regexp patterns.
I guess, I would end up writing some kind of laxer/grammar :)
-abdul

Re: Flex Component that injects Javascript in HTML host

Joan Garnet — Mon, 05 Mar 2007 12:35:33 -0000

The last update would make this crash:

<JavaScript>
<![CDATA[
location.href = "http://www.yahoo.com";
]]>
</JavaScript>

Mabybe you could evaluate that the double slash is not between quotes.
Cheers

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Mon, 05 Mar 2007 07:48:03 -0000

@Theo - I don't exactly remember why I used navigateToURL () or getURL ().. But there were some issues around it so I used navigateToURL (..)
May be it's newline character or comments or could be anything.. For simple statements/expressions ExternalInterface works.. but complex ones, it doesn't..
Please try to port one my examples, in separate post , using your technique and see if it works..
Thanks
-abdul

Re: Flex Component that injects Javascript in HTML host

iconara — Mon, 05 Mar 2007 07:17:47 -0000

Interesting idea, however, there is a much better way to do this than using getURL, check out my article on how to (ab)use the ExternalInterface to execute arbitrary JavaScript: Abusing the ExternalInterface

yours,

T#

Re: Flex Component that injects Javascript in HTML host

Chris Charlton — Thu, 29 Jun 2006 20:10:22 -0000

Neat! Thanks.

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Thu, 29 Jun 2006 15:39:05 -0000

Tim, glad to know that it helped you...
-abdul

Re: Flex Component that injects Javascript in HTML host

Tim Hoff — Mon, 26 Jun 2006 23:32:49 -0000

Thanks for the code sample Abdul. I used your class to inject javascript that sets the focus to an swf, instead of modifying the html wrapper page. I think that mySWF.focus() only works in IE, but that's better than nothing. At least now the function wont be accidentally overwritten by Flex Builder.
Best Wishes,
Tim Hoff

Re: Flex Component that injects Javascript in HTML host

Scotty — Fri, 16 Jun 2006 13:37:21 -0000

ah, I didnt know if you specified two of the same functions in javascript it would just override the previous one.
Use cases...
if your component relies on javascript and dont want to have to make sure the calling page contains a special wrapper.
Another being a way to hide your javascript logic, kinda of an encryption method. Im not sure if there are Javascript debuggers that pay attention to eval()'ed calls.

Re: Flex Component that injects Javascript in HTML host

Abdul Qabiz — Fri, 16 Jun 2006 10:46:24 -0000

Manish, remember this is the idea I discussed long. I wanted that compiler folks or FB team do that...
Anyways, hope this idea has some use-cases. I have some in my mind. I would post some examples.
Scotty, I tried using ExternalInterface then I realized I don't need it because it is one way call. And I also faced issues you mentioned.
I have not checked but you can create multiple instances of JavaScript component and inject scripts...It should work, I am just using "eval()" to make it work.
If you try to inject a function, which is already present. New injection would override the things...
-abdul