Add the ability to create defered renditions

[adamsilver]

"Basically, anything that will inject elements during testing should wait until "ready". Need to have a new meta flag that indicates deferred feature testing. Then the builder can wrap those in a deferUntilReady call. This function will likely be the first (and one of very few) to use that mechanism, though it won't affect much today (e.g. off-track mobile devices, very old Opera versions). The deferred functions can't be detected during the parse; have to wait for "ready" callback."

[adamsilver]

Currently deferUntilReady takes a single function. The idea behind it to my knowledge, is so that you only have a single "ready" function but it can just loop through a bunch of functions and call them. E.g.

var readyFunctionsToCall = [];

function addToReadyQueue(fn) { readyFunctionsToCall.push(fn); }

deferUntilReady(function() { for(var i = 0; i < readyFunctionsToCall.length; i++) { readyFunctionsToCall [ i ] (); } });

If Jessie uses it internally then the calling application cannot use deferUntilReady. Need to have a quick discussion with DM.

[web-bert]

Should we provide a jessie.ready() so users can pass in a function to call when all the deferred's have been executed?

[adamsilver]

We already do jessie.deferUntilReady(); which takes a single function. Like the one in my previous comment. The issue is I want to use the same deferUntilReady function for internal feature testing.

On Tue, Oct 15, 2013 at 9:01 AM, web-bert notifications@github.com wrote:

Should we provide a jessie.ready() so users can pass in a function to call when all the deferred's have been executed?

— Reply to this email directly or view it on GitHubhttps://github.com/rassie/jessie/issues/243#issuecomment-26315722 .

[web-bert]

I think that is the point: you can't use the same function for internal testing or external use. Plus the jessie.ready() will have to call the callback immediately if all the deferred's have been run.

[adamsilver]

My concern is that deferUntilReady has been designed like this for a reason. If we had another function just for internal we would just be duplicating the stuff required by the calling app.

[david-mark]

Can use same one for internal feature testing. See how My Library does the same.

It's just another dependency.