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setTimeout wrapper (w3ui)
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| timeout: do -> | |
| # helpers | |
| tick = (promise, ms, callback) -> !-> # {{{ | |
| # invoke and check the result | |
| if callback and callback! | |
| # continue | |
| # re-create a timer | |
| promise.timer = setTimeout (tick promise, ms, callback), ms | |
| else | |
| # finish | |
| promise.cancel! | |
| # }}} | |
| cancel = (promise) -> !-> # {{{ | |
| # stop timer | |
| if promise.timer | |
| clearTimeout promise.timer | |
| # resolve | |
| promise.timer = 0 | |
| promise.pending = false | |
| promise.resolve! | |
| # }}} | |
| # main | |
| return (ms, callback) -> | |
| # create a Promise and | |
| # extract its resolver | |
| r = null | |
| p = new Promise (resolve) !-> | |
| r := resolve | |
| # extend standard object | |
| p.timer = setTimeout (tick p, ms, callback), ms | |
| p.pending = true | |
| p.cancel = cancel p | |
| p.resolve = r | |
| # done | |
| return p | |
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