[Laszlo-dev] Need some hints in OL4.4 DHTML runtime

[P T Withington]

And definitely CC laszlo-dev, so we can all benefit from the questions  
and answers!

On 2009-05-19, at 20:32EDT, Max Carlson wrote:

> Hi Robin,
>
> The div creation process in DHTML is somewhat complicated - and  
> depends on what browser it's running in.
>
> There are at least two divs created for every view - one in the  
> clickdiv tree, and one in the visual div tree.  The zIndex is set  
> for each div because some browsers (IE) don't respect implicit z- 
> ordering.  If a view is made clickable, a div is added to the click  
> tree to handle mouse events.  If a view needs a visual resource, a  
> div is created for multiframe resources, unless stretches is on in  
> which case an img is used.
>
> A good way to understand what's happening is to use Firebug to  
> inspect the div hierarchy.  I'd also recommend reviewing the DHTML  
> sprite code, available at http://svn.openlaszlo.org/openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/ 
>  - in particular, http://svn.openlaszlo.org/openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzSprite.js
>
> Of course, feel free to ask me any specific questions.  If you do  
> notice a difference in behavior between swf and dhtml, it's likely a  
> bug - they're supposed to behave the same.  Please isolate to test  
> cases and/or file bugs when you come across this!
>
> rqin at laszlosystems.com wrote:
>> Hi Max,
>> How is everything going?
>> Recently, Frank and I keep fixing Jade P1 bugs. Most of which  
>> connect to runt time difference of swf & dhtml
>> Seems that all lz.view inheritance will be populated at least one  
>> div. I can observe tremendous amount of nested divs with different  
>> z-index level.
>> This makes me curious to know more about how dom tree has been  
>> build from middle language translation.
>> If that okay for you to give me some hints or path to go to better  
>> understand that?
>> Thanks,
>> Robin
>
> -- 
> Regards,
> Max Carlson
> OpenLaszlo.org