How to wire to window.onhashchange

[Alexander Beniaminov]

Hi!

How to wire to window.onhashchange event?
 I was trying to ware by
wf:wire(window , #event{ type=hashchange, postback=hashchanged } )
On client side we can see

Nitrogen.$observe_event('page', '.wfid_window', 'hashchange', function anonymous(event) {Nitrogen.$anchor('page', '.wfid_window');

It does not work.
Summing up the question, how to get in touch with any event of the window object?

Alexander Beniaminov

[Jesse Gumm]

Hi Alexander,

Sorry for not responding sooner here.

If you hadn't noticed, the problem with attempting to wire to the window object via wf:wire(window,...) is that 'window' gets treated as a Nitrogen ID path and attempts to wire to that (hence the .wfid_window).

At current, the best way I can think of to wire an event in such a way would be to manually attach an event with jquery, an then use the #api{} functionality to receive the triggers. (http://nitrogenproject.com/demos/api)

The trick would be then, to do something like this, which would even be able to pass the hash value with the postback

wf:wire(#api { name=hashchange, tag=hashchange }),
wf:wire("$(window).bind('hashchange',function(){ page.hashchange(location.hash) })");

...

api_event(hashchange, hashchange, [Hash]) ->
    wf:wire(#alert{text=["The hash is now: ",Hash]}).


As far as I can tell, that's the current best solution for trying to wire directly to the window object for the hashchange event.

Give that a shot and see how it works,

-Jesse

Alexander Beniaminov

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Jesse Gumm
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[Alexandre Beniaminov]

Thank you, Jesse.

I've noticed. And even I did try to rewrite nitrogen.js  and couple of modules: wf_render_actions.erl and wf_render_elements.erl. The tree files I've added case for window that is like for page, and it began work as I expected. But I didn't go further. I do not understand how to get location.hash.

Your code allows more freedom

Alexander
 

2012/11/2 Jesse Gumm <gu...@sigma-star.com>

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С уважением,
Александр Бениаминов