[Qt-interest] javascript does not load in QWebview

Mon Mar 14 08:02:02 CET 2011

@Tony:
Thanks for ur reply.
I have tried the way u told.
It is working now.

On Sat, Mar 12, 2011 at 6:33 AM, Tony Rietwyk <tony.rietwyk at rightsoft.com.au
> wrote:

>  Hi,
>
> Best to respond to the group, not me personally!
>
> I'm sure you will need to use the loadFinished slot.  In my case, I have
> Javascript executing code in my C++ object, not C++ executing Javascript as
> you require.
>
> Your abc() function should work.  As others have suggested, adding an
> alert() will help you know whether it is being called.  Have you tested
> executing your Javascript functions in the onLoad event?
>
> Your getroute function probably won't work - you are passing a function
> into the google api to be executed when it has finished communicating with
> the network.  So you should *not* expect the address variable to be filled
> in when you call getroute!  I suggest to have a look at the Qt docs for
> addToJavaScriptWindowObject - pass a QObject based object to the Javascript
> environment, and then call one of its slots in the anonymous function that
> you pass to the Google api.
>
> Tony.
>
>
>  -----Original Message-----
> *From:* Gopalakrishna Bhat [mailto:gopalakbhat at gmail.com]
> *Sent:* Friday, 11 March 2011 14:15
> *To:* Tony Rietwyk
> *Subject:* Re: [Qt-interest] javascript does not load in QWebview
>
> Hi Tony,
>
> I too thought the same thing, but that is not the reason for the method not
> being called. I had tried the loadFinshed signal myself and it did not work.
>
> With regards,
> Gopalakrishna Bhat
>
>
> On Thu, Mar 10, 2011 at 4:50 PM, Tony Rietwyk <
> tony.rietwyk at rightsoft.com.au> wrote:
>
>>  Hi Karthick,
>>
>> I don't think QWebView.load is synchronous - although the 4.6.0 docs
>> doesn't explicitly say either way!  You need to let the event loop spin for
>> the view to access the network, etc.
>>
>> I suggest to add a slot and connect to the view's loadFinished().  Then
>> you can check whether the load worked, and evaluate your Javascript.
>>
>> Hope that helps,
>>
>> Tony.
>>
>>
>>
>>  *Sent:* Thursday, 10 March 2011 14:49
>>
>>    Hi All,
>> I am trying to execute the javascript  through evaluate javascript() call
>> in QWebview. while calling evaluate javacript() call in Qt, the returned
>> value from that call is null. how to make  javascript works in Qwebview?
>> please help me to solve this issue?
>>
>> Qt code:
>>
>> QWebView *view;
>>
>> view->load(QUrl("file:///home/admin/test.html"));
>> Qvariant name, address;
>> name = view->page()->mainFrame()->evaluateJavaScript("abc()");
>> qDebug() << name.toString();       *//getting null value*
>>  address = view->page()->mainFrame()->evaluateJavaScript("getroute()");
>> qDebug() << address.toString();   *//getting null value*
>>
>> test.html:
>> <html>
>> <head>
>> <script type="text/javascript" src="
>> http://maps.google.com/maps/api/js?sensor=false"></script> //This is for
>> calling google maps api's
>> <script type="text/javascript">
>>
>> function *abc()*
>> {
>>      *return "SUCCESS";*
>> }
>> var address;   //global variable
>>
>> function *getroute()*
>> {
>>     /*
>>        declaration and initialization of google maps api stuff
>>    */
>>     calling *google api directionsService.route*(req,
>> function(resp,status){
>>     if (status == ok)
>>     {
>>         address = resp.routes[0].legs[0].start_address;
>>     } });
>>    return address;
>> }
>> </script>
>> <body>
>> </body>
>> </html>
>> --
>> *Regards,*
>> *Karthick*
>>
>>
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>

-- 
*Regards,*
*Karthick
*
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