Yes, I agree about attaching AJAX handlers to the components. These
handlers should then be able to access the nodel of the specific
component and all other components on the page. The handler can then
cause model changes, detect external model changes or alter the
hierarchy. What we then do is rather than render the whole page agaiin,
we just visit each component, ask it if it needs to rerender and then
return the new html portion within the AJAX response.
regards,
Chris
Eelco Hillenius wrote:
Why do request handler need to be more intelligent than existing
event handlers - they are doing exactly the same thing: reacting to
events. Where the added complexity comes in is in the model objects
as these need someone waht to support change detection.
If rendering would not change, and would thus still be the
responsibility of the component, it wouldn't be the problem I meant.
Yes, we must only have one component tree. However, what we need to
do is AJAX enable the existing components rather than have AJAX
alternatives.
Not sure if I understand what you mean. Why I think it is usefull to
be able to attach ajax handlers to components instead of building it
in, is that it is a matter of combining. E.g. in one case, you like to
check the validity of a TextField on an onchange, but in another case,
you might want to do a lookup of and render another component (like an
address lookup) on TextField's onchange. So the components stay the
same, but the wanted ajax behaviour can vary.
Cheers,
Eelco
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