Rails spinoffs - Mar 2007 - Core Effects beforeStart Issue

There appears to be an issue with the Core Effects beforeStart
callback. If data is written to the object that is being rolled down
on the beforeStart callback the scrolling effect fails to happen. The
div will be displayed but not until the effect finishes.  Anyone found
a workaround to this issue?

The following code will demonstrate the issue:

<div id="searchResults" style="display:
none;"></div>
<script>
new Effect.BlindDown($("searchResults"), {
    beforeStart: function() {
        $
("searchResults").update("test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>");
    },
    afterFinish: function() {
        //alert("done");
    }
});
</script>


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Adding this after the element.update() seems to work.

//Stolen directly from the effects.js class.
var elementDimensions = $("searchResults").getDimensions();
e.options.scaleMode.originalHeight = elementDimensions.height;
e.options.scaleMode.originalWidth = elementDimensions.width;

On Mar 26, 1:59 pm,
"heispsycho...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<heispsycho...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> There appears to be an issue with the Core Effects beforeStart
> callback. If data is written to the object that is being rolled down
> on the beforeStart callback the scrolling effect fails to happen. The
> div will be displayed but not until the effect finishes.  Anyone found
> a workaround to this issue?
>
> The following code will demonstrate the issue:
>
> <div id="searchResults" style="display:
none;"></div>
> <script>
> new Effect.BlindDown($("searchResults"), {
>     beforeStart: function() {
>         $
>
("searchResults").update("test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>test<br>");
>     },
>     afterFinish: function() {
>         //alert("done");
>     }});
>
> </script>

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Since your effect does not use queueing, and will therefore trigger 
immediately (well, within 1/60th of a second), I fail to understand why 
on Earth you don''t do your update *before* creating the effect...  That
would be so much simpler...

-- 
Christophe Porteneuve aka TDD
tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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