nsISHistoryListener has methods OnHistorygoBack(), OnHistoryGoForward() with an
option to cancel the Back/forward/reload/goto operations. But it does not have an
option to cancel loading of an url load thro' other means like link click etc...
Ashutosh Kulkarni wrote:
> Hi Jud,
>
> Thanks for replying. Let me explain what I'm trying to do here.
> I have a plugin that is used as a document editor. When someone
> clicks on the "Back" or "Forward" menus or toolbar buttons, I want
> to first throw a dialog box asking the user whether he indeed
> wishes to quit the plugin, and if the user chooses cancel to
> cancel the new page load and bring the user back to the plugin.
>
> I figured the best way to do this was to have my plugin implement
> the nsIWebProgressListener interface and listen in on page load
> starts. Then I could throw a dialog box on a start load and if the
> user chose cancel, cancel the load by calling nsIRequest->Cancel().
>
> However, without getting access to the specific nsIWebBrowser of
> the plugin window, this does not fly. Any suggestions from you
> would be greatly appreciated.
>
> thnx much
> _Ashu
>
> >User-Agent: Mozilla/5.0 (X11; U; Linux 2.4.2-2 i686; en-US; rv:0.9+)
> Gecko/20010507 Netscape6/6.5b0
> >X-Accept-Language: en
> >MIME-Version: 1.0
> >To: [EMAIL PROTECTED]
> >CC: [EMAIL PROTECTED]
> >Subject: Re: How to get a nsIWebBrowser from a nsIDocShell
> >Content-Transfer-Encoding: 7bit
> >
> >[EMAIL PROTECTED] wrote:
> >
> >>I have a plugin that I need to register as a nsIWebProgressListener on the
> >>nsIWebBrowser that is displaying the plugin. I can use the WindowMediator
> >>service to get the nsIXULWindow to which the plugin belongs and then get the
> >>nsIDocShell of the PrimaryContentShell of this XULWindow.
> >>
> >neither nsIXULWindow or nsIDocShell are public; they are private.
> >
> >> However, inorder to
> >>be able to register the listener, I need access to the particular
> >>nsIWebBrowser. How do I do this.
> >>
> >the embedding api's assume that you update the window mediator w/ the
> >window hierarchy as it changes. this assumes that you own the window
> >model and hierarchy (which would give you ther nsIWebBrowser for free).
> >if you're trying to do this from a plugin, I'm not sure how it would be
> >done.
> >
> >>I dont want to set the listener on the nsIWebProgress as i understand this is
> >>a Service and will notify me when a load happens in any open window of the
> >>browser.
> >>
> >nsIWebProgress is currently private as well, and yes, you would get
> >global notifications.
> >
> >Jud
> >
>
> Ashutosh Kulkarni
> Sun Microsystems Inc.
> 408 343 1871
