Abnormal behavior?

xbury.cs at clearstream.com xbury.cs at clearstream.com
Tue Feb 8 04:38:01 CST 2005


Thanks Scott,

I didn't know the hierarchy was such a "mess" ;))

Just kidding! I'll have to think this over... 

cheers
Xavier

On 08.02.2005 11:12:54 use-revolution-bounces wrote:
>Recently, xbury.cs at clearstream.com wrote:
>
>>>> I have a field script with a keydown event
>>>> which responds to keys typed in a field and
>>>> which checks for pretyping using a handler.
>>>>
>>>> I also have a frontscript (XOS) with a generic
>>>> pretype handler of the same name.
>>>>
>>>> What is abnormal is that when the keydown event
>>>> calls the pretyping handler, the frontscript is
>>>> the one that takes priority and not the handler
>>>> in the same script!
>>>>
>>>> This busts completely the local overide principle
>>>> in scripts... And the hierarchy of events...
>
>>> If I understand you correctly, I would think the behavior is correct. 
If
>>> a frontscript wasn't triggered first, why would you bother having
>>> frontscripts at all?
>
>> The question is rather how do you overide a frontscript?...
>>
>> In general and in most situations a local item overides a global
>> counterpart.
>>
>> If i have a card script and an equal stack (or bg) script, the card 
script
>> is the
>> first to run...
>>
>> Maybe I got the frontscript wrong... And that script shouldn't be there
>> but still im surprised of the behavior...
>
>Without knowing exactly what you're doing, I wonder if perhaps you need 
to
>look at the message hierarchy differently.  Frontscripts were designed to
>intercept messages before they are passed to any object.  I don't believe
>there is any way to override a frontscript, but you can remove the script
>from the message hierarchy which should effectively accomplish the same
>thing, and then re-insert the script as needed.
>
>Alternatively, you could have the bulk of your scripts stored in a
>backscript or library, and then have scripts in specific controls which 
will
>override the backscripts by default.  This might be closer to what you
>describe.
>
>You might want to take a look at this diagram to better understand the
>message path:
>http://www.fourthworld.com/embassy/articles/images/mess_path2.gif
>
>Regards,
>
>Scott Rossi
>Creative Director
>Tactile Media, Development & Design
>-----
>E: scott at tactilemedia.com
>W: http://www.tactilemedia.com
>
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>use-revolution mailing list
>use-revolution at lists.runrev.com
>http://lists.runrev.com/mailman/listinfo/use-revolution


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