[Laszlo-dev] [JIRA] Updated: (LPP-7737) IE "Click Sounds" problem when loading

[P T Withington]

I am re-spinning 4.2.0.2 with this change in.

On 2009-03-06, at 10:22EST, Max Carlson (JIRA) wrote:

>
>     [ http://www.openlaszlo.org/jira/browse/LPP-7737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel 
>  ]
>
> Max Carlson updated LPP-7737:
> -----------------------------
>
>              Status: Resolved  (was: In Review)
>    Fixed in Change#: 13201
>          Resolution: Fixed
>
> r13201 | max | 2009-03-06 07:20:45 -0800 (Fri, 06 Mar 2009) | 24 lines
> Changed paths:
>   M /openlaszlo/branches/4.2
>   M /openlaszlo/branches/4.2/WEB-INF/lps/lfc/kernel/swf9/ 
> LzPreloader.as
>   M /openlaszlo/branches/4.2/WEB-INF/lps/lfc/lzpreloader.as
>   M /openlaszlo/branches/4.2/WEB-INF/lps/server/src/org/openlaszlo/ 
> compiler/SWF9Writer.java
>
> Merged revisions 13200 via svnmerge from
> http://svn.openlaszlo.org/openlaszlo/trunk
>
> ........
>  r13200 | max | 2009-03-06 07:17:33 -0800 (Fri, 06 Mar 2009) | 18  
> lines
>
>  Change 20090305-maxcarlson-l by maxcarlson at Bank.local on 2009-03-05  
> 20:10:53 PST
>      in /Users/maxcarlson/openlaszlo/trunk-clean
>      for http://svn.openlaszlo.org/openlaszlo/trunk
>
>  Summary: Fix load progress updates for swf 8 and 9 to not cause  
> 'clicking' in IE
>
>  Bugs Fixed: LPP-7737 -  IE "Click Sounds" problem when loading
>
>  Technical Reviewer: promanik
>  QA Reviewer: mohammad at zeineddin.name
>
>  Details: LzPreloader, lzpreloader - Update to use ExternalInterface  
> calls instead of loading URLs.
>
>  SWF9Writer - Update to include code from LzPreloader.
>
>  Tests: Modified WEB-INF/lps/templates/html- 
> response.xslt#onloadstatus() method to show load progress  
> information, to verify updates are being sent for swf8/9.  Used  
> fiddler proxy under windows with 'simulate modem speed' script to  
> verify there is no more clicking in IE even for slow downloads.
> ........
>
>> IE "Click Sounds" problem when loading
>> --------------------------------------
>>
>>                Key: LPP-7737
>>                URL: http://www.openlaszlo.org/jira/browse/LPP-7737
>>            Project: OpenLaszlo
>>         Issue Type: Bug
>>         Components: Browser Integration
>>   Affects Versions: 4.2.0.1
>>        Environment: * OpenLaszlo 4.2.0.1 build branches/4.2 at 12788  
>> (12788)
>> * runtime target swf9
>> * browser IE7 on windows XP
>>           Reporter: Mohammad ZeinEddin
>>           Assignee: Max Carlson
>>           Priority: P0
>>            Fix For: 4.2.0.2
>>
>>
>> while the laszlo application is being loaded in IE, a clicks sound  
>> is heard, and after tracing the problem using a script debugger  
>> line by line, I found where the issue exactly appears;
>> 1- In the javascript library (embed-compressed.js) there is a  
>> function that sends the percentage loaded so far of the embeded  
>> flash object:
>> _sendPercLoad : function($1) {
>>        if (this.onloadstatus && typeof this.onloadstatus ==  
>> "function") {
>>            this.onloadstatus($1);
>>        }
>>    },
>> which is being called by a javascript code that is dynamically  
>> generated at run time. This code snippet which calls this function  
>> is hard-coded in the source code of the lps server.
>> 2- Upon the completion of this function call, "void(0);" is being  
>> called, and after that exactly the click sound appears.
>> "if (window.lz && lz.embed && lz.embed.applications &&  
>> lz.embed.applications.lzapp)  
>> lz.embed.applications.lzapp._sendPercLoad(10);void(0);"
>> 3- I'm not exactly sure that the problem is in "void(0);", but its  
>> a very possible candidate. Another possible thing that I noticed  
>> while i'm trying this, is that the "4- I'm not exactly sure that  
>> the problem is in "void(0);", but its a very possible candidate.  
>> Another possible thing that I noticed while i'm trying this, is  
>> that the "onbeforeunload" event is being triggered each time this  
>> function is called, and it is a more possible that this what is  
>> causing the click sounds." event is being triggered each time this  
>> function is called, and it is a more possible that this what is  
>> causing the click sounds. I know as in a bug before that  
>> "document.write" in IE fires "onbeforeunload", but in the previous  
>> OpenLaszlo servers we have not seen this issues!!! it is too  
>> annoying issue especially for big applications because those sounds  
>> is heard many many times.
>
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