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

[Henry Minsky]

I endorse this proposal.




On Wed, May 14, 2008 at 7:23 PM, P T Withington <ptw at pobox.com> 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?
>



-- 
Henry Minsky
Software Architect
hminsky at laszlosystems.com
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