[webkit-dev] setTimeout and Safari

Steve Conover sconover at gmail.com
Thu Oct 7 15:09:01 PDT 2010

It's true.  Maybe I'm wrong about this but it seems to me that at some
point most pages "settle".  I'm also planning to put in a hard timeout
in what I'm building.  And I'm slightly more concerned about js than

Do you know of a good way at getting at an event queue or something
else containing a list or a count of upcoming setTimeout/setInterval
operations, in either Safari or QtWebKit?

On Thu, Oct 7, 2010 at 12:41 PM, Simon Fraser <simon.fraser at apple.com> wrote:
> On Oct 7, 2010, at 12:23 PM, Steve Conover wrote:
>> So that I don't have to guess whether a page is "done" rendering.
>> Many developers defer rendering using setTimeout, I'd like to wait
>> until setTimeouts are done and then just after check the result.  This
>> would be superior to guessing at a sleep interval in the calling code.
> Are you trying to choose a good time to snapshot the page?
> There are many things that can cause the page to keep changing; chained
> setTimeouts, setInterval, CSS transitions and animations, SVG animation,
> plugins etc etc. This is not a simple question to answer.
> Simon
>> On Wed, Oct 6, 2010 at 5:54 PM, Simon Fraser <simon.fraser at apple.com> wrote:
>>> Why do you need to know if there are no more pending setTimeouts?
>>> Simon
>>> On Oct 6, 2010, at 5:52 PM, Steve Conover wrote:
>>>> Hoping someone on -dev might have an idea about this...
>>>> -Steve
>>>> ---------- Forwarded message ----------
>>>> From: Steve Conover <sconover at gmail.com>
>>>> Date: Tue, Sep 28, 2010 at 11:19 PM
>>>> Subject: Re: setTimeout and Safari
>>>> To: webkit-help at lists.webkit.org
>>>> Actually I am discovering what one might describe as a "normal"
>>>> problem here...how to know when the setTimeout's are done firing.  The
>>>> ideal would that I could somehow drill into the dom implementation and
>>>> ask whether any setTimeout events are waiting to fire (and stop
>>>> polling if the queue length is zero).
>>>> I'm sure that's way off in terms of how this is actually implemented.
>>>> Does such a thing exist?  Could someone please point me to the
>>>> relevant sourcecode?
>>>> Regards,
>>>> Steve
>>>> On Tue, Sep 28, 2010 at 10:36 PM, Steve Conover <sconover at gmail.com> wrote:
>>>>> Sigh.  Please disregard.  After an hour of troubleshooting, I sent
>>>>> this email, and two minutes later realized the problem was bad js
>>>>> (blush).
>>>>> On Tue, Sep 28, 2010 at 10:22 PM, Steve Conover <sconover at gmail.com> wrote:
>>>>>> I hope this is the right place to be asking this question.
>>>>>> I'm using the cocoa api, and am able to load a web page in a WebView.
>>>>>> However I have some javascript in the page that uses setTimeout to
>>>>>> cause a function to fire 100ms into the future - but the page loads
>>>>>> and ignores the setTimeout's.
>>>>>> How do I get my setTimeout's to fire?  I suspect this has something to
>>>>>> do with the Run Loop, but my experiments so far with various parts of
>>>>>> the Run Loop api have been failures.
>>>>>> Regards,
>>>>>> Steve
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