[webkit-help] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher

[souvik.datta at wipro.com]

npn_invoke returned 0.

The func() is a java script function which receives the string (in this case - "Hello from wcfplugin......") passed to it from the  plugin-in 
and display in an alert.
Just to make sure that the JavaScript code is correct, I have changed "document" to "content" and ran it on firefox. 
I am getting an alert with - "Hello from wcfplugin......"
________________________________________
From: Yani, Ivan [IYani at luxoft.com]
Sent: Friday, March 16, 2012 2:51 PM
To: Souvik Datta (WT01 - PES-Auto-Practice)
Cc: webkit-help at lists.webkit.org
Subject: RE: [webkit-help] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher

Why do you think so? Did npn_invoke returned false? Where did you expect the string to appear? Maybe it's a javascript function that is incorrect.

-----Original Message-----
From: souvik.datta at wipro.com [mailto:souvik.datta at wipro.com]
Sent: Friday, March 16, 2012 11:16 AM
To: Yani, Ivan
Cc: webkit-help at lists.webkit.org
Subject: RE: [webkit-help] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher

I tried using : id = npnfuncs->getstringidentifier("document"); in GtkLauncher

Although this time there was no segmentation fault, but the string "Hello from wcfplugin......" did not print either.
It seems "func" is not found.

Regards,
Souvik

________________________________________
From: vanuan at gmail.com [vanuan at gmail.com] on behalf of Vanya Yani [iyani at luxoft.com]
Sent: Friday, March 16, 2012 2:08 PM
To: Souvik Datta (WT01 - PES-Auto-Practice)
Cc: webkit-help at lists.webkit.org
Subject: Re: [webkit-help] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher

On 16 March 2012 09:08,  <souvik.datta at wipro.com> wrote:
> Hello Vanya,
>
> I absolutely agree with you that we should check for NULL in very function call.

You should also check the return value of NPN functions.

> We actually wanted window.content and not window.console. There is a Java script function named "func()" which is present in the html page (i.e, in window.content)
> Therefore, Firefox behavior is correct. It is calling the "func" of "window.content".

It's not correct. It's non standard.

As you can see here: https://developer.mozilla.org/en/DOM/window.content
it is not part of any W3C specification.

Available window object properties are:
http://www.w3schools.com/jsref/obj_window.asp

I think you should try window.document

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