Re: DOMContentLoaded event from C++

вторник, 17 мая 2011 г., 19:44:25 UTC+4 пользователь Martin  Lutken написал:
> Hi Neil
> 
> 
> I'll try your way too. Again Thanks a lot :)
> Also found a way myself which seems to work:
> 
> I found the solution. Just need to get the Parent windows of the one I
> wa using. Except if you want the "unload" event which seems to only
> work for the window I was first using. Here goes the complete updated
> code for those who might have had the same troubles as I.
> Thanks again to Neil for his great help.
> 
> void CSpecialThing::getBrowserQuestionForForum()
> {
>     nsString wsHrefXul      = NS_LITERAL_STRING( "chrome://xulcrawler/
> content/main.xul" );
>     nsString wsIDBrowser    = NS_LITERAL_STRING( "mybrowser1" );
> 
>     // --- A lot of variables ---
>     nsresult rv;
>     nsCOMPtr<nsIDOMWindowInternal>      pWinInt(0);
>     nsCOMPtr<nsISimpleEnumerator>       pWinEnumerator;
>     nsCOMPtr<nsIDOMLocation>            pDOMLocation;
>     nsCOMPtr<nsIDOMWindowCollection>    pDOMWindowCollection;
>     nsCOMPtr<nsIDOMWindow>              pDomWin;
>     nsCOMPtr<nsIDOMWindow>              pDomWinBrowser;
>     nsCOMPtr<nsIDOMDocument>            pDomDoc;
> 
> 
>     // -----------------------------
>     // --- Get DomWindowInternal ---
>     // -----------------------------
> 
>     nsCOMPtr<nsIWindowMediator>
> pWindowMediator(do_GetService(NS_WINDOWMEDIATOR_CONTRACTID));
> 
>     nsString sWindowType( NS_LITERAL_STRING("") );
>     rv = pWindowMediator->GetEnumerator( sWindowType.get(),
> getter_AddRefs(pWinEnumerator));
> 
> 
>     PRBool bHasMoreElements;
>     rv = pWinEnumerator->HasMoreElements( &bHasMoreElements );
> 
>     while ( bHasMoreElements ) {
>         nsCOMPtr<nsISupports> pSupportsWin;
>         rv = pWinEnumerator->GetNext( getter_AddRefs(pSupportsWin) );
>         nsCOMPtr<nsIDOMWindowInternal>
> pWinInternal(do_QueryInterface(pSupportsWin));
> 
>         rv = pWinInternal-
> >GetLocation( getter_AddRefs(pDOMLocation) );
> 
>         nsString wsHrefTest;
>         rv = pDOMLocation->GetHref( wsHrefTest );
> 
>         // See if we have the correct (XUL) URI
>         if ( wsHrefXul == wsHrefTest  ) pWinInt = pWinInternal;
> 
>         rv = pWinEnumerator->HasMoreElements( &bHasMoreElements );
>     }
> 
>     // --- Get the "mybrowser1" element ---
>     pWinInt->GetFrames( getter_AddRefs(pDOMWindowCollection) );
>     pDOMWindowCollection->NamedItem( wsIDBrowser,
> getter_AddRefs(pDomWin) );
> 
>     pDomWin->GetParent( getter_AddRefs(pDomWinBrowser) );
> 
>     // --- Add events ---
>     nsCOMPtr<nsIDOMEventTarget>
> pDomEventTargetBrowserWin(do_QueryInterface(pDomWin));
>     nsCOMPtr<nsIDOMEventTarget>
> pDomEventTargetBrowser(do_QueryInterface(pDomWinBrowser));
>     pDomEventTargetBrowser-
> >AddEventListener(NS_LITERAL_STRING("DOMContentLoaded"), this,
> PR_FALSE);
>     pDomEventTargetBrowser-
> >AddEventListener(NS_LITERAL_STRING("resize"), this, PR_FALSE);
>     pDomEventTargetBrowserWin-
> >AddEventListener(NS_LITERAL_STRING("unload"), this, PR_FALSE);
> 
>     // ---------------------------------------------------------------
>     // --- Bonus example on how to get the current URI of the page ---
>     // ---------------------------------------------------------------
>     pDomWin->GetDocument( getter_AddRefs(pDomDoc) );
>     nsCOMPtr<nsIDOMDocumentView>
> pDomDocumentView(do_QueryInterface(pDomDoc));
>     nsCOMPtr<nsIDOMAbstractView> domAbstractView =
> getDefaultView(pDomDocumentView);
>     nsCOMPtr<nsIWebNavigation>
> webNavigation(do_GetInterface(domAbstractView));
>     printf("webNavigation uri: %s\n",
> getCurrentURI(webNavigation).c_str() );
> }

Hi, Martin. 
A question for nubie. What function will be fired on event. The second parameter for "AddEventListener" is "this". It is the pointer to class, not function.
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