[webkit-qt] WK2/QML handling of unresponsive/crashed web process

Milian Wolff milian.wolff at kdab.com
Wed Jan 30 06:52:17 PST 2013

On Wednesday 30 January 2013 15:22:20 Jocelyn Turcotte wrote:
> On Wed, Jan 30, 2013 at 02:49:18PM +0100, Milian Wolff wrote:
> > The process-question I asked to clarify my understaning for when I have to
> > work on writing the code to handle the unresponsive/crashed web process.
> > 
> > My use case is a WebView as a local-HTML renderer (opposed to a full
> > fledged browser). It would be embedded in a bigger QML app and just part
> > of the full package. One does not want it to show a blank white page
> > showing "web process crashed": To get rid of it after all, the user would
> > have to press some reload GUI element. Especially on embedded devices
> > with limited screen real estate you don't want to clutter it with such a
> > reload button.
> > 
> > Rather one might want to reload the page automatically and increase some
> > crash counter. If it failed for N times consecutively though one should
> > probably show a proper error page - but that should be properly styled
> > and integrated into the rest of the application. It could e.g. contain
> > additional information and offer to report a bug or something.
> > 
> > None of these things above are possible to handle right now using QtWebKit
> > from QML - or am I missing something?
> Ok, same idea as suggested on my response to Alexis, how about exposing the
> processDidCrash signal (along with processDidBecomeUnresponsive for
> unresponsiveness), which could then be handled by the QML code to call
> reload automatically, or prompt the user first, or just ignore it and let
> the user press the reload button. Would that solve your issue?

Yes it would, if QtWebKit automatically killed the unresponsive process upon 

Milian Wolff | milian.wolff at kdab.com | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel. Germany +49-30-521325470, Sweden (HQ) +46-563-540090
KDAB - Qt Experts - Platform-independent software solutions
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