[fpc-devel] LocalReferenceFixup

[José Mejuto]

Hello Martin,

Tuesday, October 5, 2010, 9:56:41 AM, you wrote:

>> I find a problem that I'm unable to resolve, with my limited skills.
>> In TReader when a property is a TClass it is being added to be
>> resolved after all components are loaded, but the "Loaded" call is
>> performed before this fixup, so when a component receive the "Loaded"
>> signal some fields are still not completly filled in.
MS> Use
MS> "
MS> procedure BeginGlobalLoading;
MS> procedure NotifyGlobalLoading;
MS> procedure EndGlobalLoading;
MS> "

I see, but there is still a problem, I think. Let me explain:

1) Component is being read, it reads Active property, if set and
csLoading then the "active" is postponed to "afterload".
2) The "Database" property is being read, but as it is a TClass it is
added to LocalFixups.
3) The remaining properties are beign read.
4) Component is notified with "Loaded" signal, so it tries to active
itself, but database is not set.
5) Fixups are performed.
6) Component is notified again with "Loaded" signal.

I do not know how to instruct the component to skip the first "Loaded"
signal and wait for the next one, specially because if "Database" is
not set (trully error) the second "Loaded" signal will not be fired.
Maybe a component state like "csFixupsPending" ?

I do not have too much experience with components, but calling
"Loaded" several times does not look very fine.

-- 
Best regards,
 José