Re: Embedding Gecko/XULRunner

On 19.02.2011 3:46, moz_embedder wrote:
> I think am able to initialise the browser by QI-ing for nsBaseWindow
> and then init and then create. I think it s initialised properly
> because the return code on loading a URL through nsIWebNavigation is
> OK.
> I am not displaying anything since I am trying to run offscreen and I
> only have the codes to work with. However, I cannot get to the
> nsIDOMWindow (I get null) by doing:
>
> nsCOMPtr<nsIDOMWindow>  mDomWin;
> mWebBrowser->GetContentDOMWindow(getter_AddRefs(mDomWin));
>
> Any suggestions??
> Here is a snippet with all the initialisations going on:
>
>
> nsCOMPtr<nsIWebBrowser>  mWebBrowser =
> do_CreateInstance(NS_WEBBROWSER_CONTRACTID,&rv);
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't create Web Browser"<<  std::endl;
>          exit(1);
>      }
>
>      nsCOMPtr<nsIWebNavigation>  mWebNav =
> do_QueryInterface(mWebBrowser,&rv);
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't create Web Nav"<<  std::endl;
>          exit(1);
>      }
>
>      nsCOMPtr<nsIBaseWindow>  baseWindow =
> do_QueryInterface(mWebBrowser,&rv);
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't QI base win"<<  std::endl;
>          exit(1);
>      }
>
>      WebBrowserChrome *cw = new WebBrowserChrome();
>      mWebBrowser->SetContainerWindow(static_cast<nsIWebBrowserChrome*>
> (cw));
>
>      WebBrowserChromeUI *nw = new WebBrowserChromeUI(); //empty - I
> dont want to display stuff
>      rv = baseWindow->InitWindow(nw, nsnull, 0, 0, 0, 0);
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't init base win"<<  std::endl;
>          exit(1);
>      }
>
>      rv = baseWindow->Create();
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't create base win"<<  std::endl;
>          exit(1);
>      }
>
>      rv = mWebNav->LoadURI(
>              NS_ConvertASCIItoUTF16("http://www.google.com/").get(),
>              nsIWebNavigation::LOAD_FLAGS_NONE,
>              nsnull,
>              nsnull,
>              nsnull);
>      if (NS_FAILED(rv)) {
>          std::cout<<  "Couldn't load URL: "<<  std::endl;
>          exit(1);
>      } else {
>          std::cout<<  "Maybe loaded url"<<  std::endl; //reaches
> here :) :) :)
>      }
>
>
>
>      nsCOMPtr<nsIDOMDocument>  mDomDoc;
>      nsCOMPtr<nsIDOMWindow>  mDomWin;
>      rv = mWebBrowser->GetContentDOMWindow(getter_AddRefs(mDomWin));
>      if(mDomWin) { // mDomWin is NULL here :( :( :(
>          mDomWin->GetDocument(getter_AddRefs(mDomDoc));
>          if(!mDomDoc)
>              std::cout<<  "Cannot get DOM doc"<<  std::endl;
>      } else {
>          std::cout<<  "Cannot get dom win "<<  std::endl;
>      }

Hello Peter,

Have you implemented nsIInterfaceRequestor for WebBrowserChrome class?

Best regards,
Denis Lazarev.