[webkit-qt] How to know if page is using java script timer

Tarandeep Singh tarandeep at gmail.com
Tue Apr 13 10:07:10 PDT 2010

> No, one cannot expect the loadFinished() signal to be able to
> predict whether scripts that have timeouts pending will be
> modifying the page, nor if they do, whether they will ever stop
> modifying it.  For instance, on a page on which a script uses a
> timeout to keep a visual counter/clock constantly updating, you
> would not want the loadFinished() signal to delay forever just
> because the script-generated clock runs forever.

Yes, this seems to be the correct behavior.

> Perhaps, Tarandeep, you can traverse the DOM to detect locations
> that are waiting for an image?  Does your situation make that
> possible, or can you not detect those locations that are still
> waiting for scripts to place images there?

I don't know the locations where the images will be loaded. I mean it
will vary from page to page. There is a method -
QAbstractEventDispatcher::registeredTimers ( QObject * object )

Can it be used in some way? To which Object timers are attached? Frame/WebPage?


> Nathan

On Tue, Apr 13, 2010 at 8:26 AM, tonikitoo (Antonio Gomes)
<tonikitoo at gmail.com> wrote:
> Hum, if that is the case I think it can be even considered a bug. See
> QWebPage documentation online
> "The loadStarted() signal is emitted when the page begins to load.The
> loadProgress() signal, on the other hand, is emitted whenever an
> element of the web page completes loading, such as an embedded image,
> a script, etc. Finally, the loadFinished() signal is emitted when the
> page has loaded completely. Its argument, either true or false,
> indicates whether or not the load operation succeeded."
> source: http://doc.trolltech.com/main-snapshot/qwebpage.html
> On Mon, Apr 12, 2010 at 1:14 PM, Tarandeep Singh <tarandeep at gmail.com> wrote:
> > Hi,
> >
> > I am trying to load a page using QWebPage. The page uses javascript delay to
> > delay loading of the images (I guess webkit would create Timer objects to
> > handle this delay).
> >
> > What I am trying to do is, once the page is loaded (including all the
> > images) get its DOM. I am connecting to the signal loadFinished() of the
> > webpage. However, this signal is generated as soon as the page is loaded
> > (the images are not yet loaded).
> >
> > Is there a way, I can find out that the page that I am trying to load is
> > using timers and hence wait for them to send signal?
> >
> > Thanks,
> > Tarandeep
> >
> > _______________________________________________
> > webkit-qt mailing list
> > webkit-qt at lists.webkit.org
> > http://lists.webkit.org/mailman/listinfo.cgi/webkit-qt
> >
> >
> --
> --Antonio Gomes

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