Re: [jsr-314-open] JavaScript disabled support [Was: Outcome of JSFDays discussions]
BTW, an important question that we should consider is whether JSF itself
should provide a facility for detecting whether client-side scripting is
enabled. This could be very useful - ie. could allow us to solve
long-standing problems. For example, if we have a way to detect when
JavaScript is disabled, seems like we could provide an <h:commandLink> that
works when JavaScript is disabled fairly easily (fall back to an <input
type="submit">).
I like this idea. Currently this is a wheel that every application (that
cares about it) has to reinvent. +1 for providing real-world solutions in
Java EE.
As for how to go about detecting whether JavaScript is disabled, I
was
thinking we would do something along these lines:
- FormRenderer spits out a <script> that dynamically adds a hidden field
with some well known name.
- On postback, we check to see whether this hidden field is present
- If the hidden field is present, we know that scripting is enabled. Yay.
- If the hidden field is not present, we assume that scripting is disabled.
Of course, this means that we cannot detect whether JavaScript is enabled
until the first postback is performed. Is there some way to get around
this? Martin or Jeremy - I know you guys have provided solutions for this
sort of thing - please let jump in if you have any suggestions.
What we are most interested in is hearing about feedback from the community.
We don't want a solution that people think is naive. If we do it, let's
provide a solution that most people are willing to accept. Seems obviously,
but obvious hasn't worked in the past.
-Dan
--
Dan Allen
Senior Software Engineer, Red Hat | Author of Seam in Action
http://mojavelinux.com
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