[Laszlo-user] API change proposal for states and apply

Max Carlson max at openlaszlo.org
Sun May 18 19:51:17 PDT 2008


This sounds great to me!

P T Withington wrote:
> We need to clean up the API for states.  Right now states have both an 
> attribute _and_ a method named `apply`.  This just makes no sense.  It 
> is implemented by a horrendous kludge that we will not be able to carry 
> forward into Javascript 2 runtimes.  Here's my proposal:
> 
> 1) Deprecate `apply` the attribute.  Replace it with `applied`, which is 
> a read/write attribute whose value reflects whether or not the state is 
> currently applied.  (There is currently a property `isapplied` that is 
> read-only that tells the state of a state, but this name is inconsistent 
> with our name conventions.  As a part of this proposal, deprecate 
> `isapplied` and replace it with `applied`.
> 
> The `apply` method (and it's counterpart `remove`) remain, but the 
> preferred method for controlling a state is to constrain the `applied` 
> property.
> 
> We can add to the 4.x upgrade script a template that looks for `apply` 
> in the open tag of a state and replaces it with `applied`.
> 
> Comments?

-- 
Regards,
Max Carlson
OpenLaszlo.org


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