I am looking into virtual custom properties (specifically: using them
to provide default values if a custom property of an object is empty
or does not exist). My understanding is that a getProp message
should percolate up the message path, and when it finds a getProp
handler it should be able to use whatever value is returned.
This sample from the Dictionary looks like what I am trying to do
should be reasonable:
>>
getProp expertSettings[thePropertyName]
-- The thePropertyName parameter contains the name of
-- the property that's being set
switch thePropertyName
case "fileMenuContents"
if the expertSettings[fileMenuContents] of the target \
is empty then return "(No items"
else pass expertSettings
break
case "editMenuContents"
if the expertSettings[editMenuContents] of the target \
is empty then return \
the noviceSettings[editMenuContents] of the target
else pass expertSettings
break
default
pass expertSettings
end switch
end expertSettings
<<
It seems to work fine when I put this in the MB:
get the expertSettings["fileMenuContents"] of this stack
However, if I type this instead:
get the expertSettings["fileMenuContents"] of this card
Then I get this error:
Message execution error:
Error description: recursionLimit: Recursion limit reached
The stack I'm testing this in is a new stack with no controls on it
(just the default card of any new stack).
Is the documentation wrong, or is it my understanding of it that is
mistaken?
Bernard
P.S. The recursionLimit is at the default of 400000. Incidentally,
the TD says this should be 1000000 by default. Since it is global
property, I'm assuming that even if I changed it to 400000 in the
past, it should be resetting itself to 1000000 on restart. Is that
right?
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