[webkit-help] IWebDocumentView and IWebDocumentRepresentation for Windows Apple Build -> Implementing url handler for CFNetwork

Sumedh vsbhogle at gmail.com
Sun Oct 9 22:42:29 PDT 2011


Thanks Roben for clearing the concept.

We want to provide custom data and then let webkit render it on the view. I
guess we are using CFNetwork dll for networking. Can you guys please guide
me how to implement url handler for custom scheme. It will be great help, if
you direct me somewhere.


On Wed, Oct 5, 2011 at 7:04 PM, Adam Roben <aroben at apple.com> wrote:

> On Oct 5, 2011, at 2:12 AM, Sumedh wrote:
> Hi,
> I am using WebKit apple port for windows, i have extended the WinLauncher
> project. I wanted to write my own protocol handler for particular mime type,
> lets say "image/". I have implemented IWebDocumentView and
> IWebDocumentRepresentation. As required, i am passing the pointer to the
> objects of the respective classes to the RegisterViewClass method of
> IWebView  object, now this method returns me E_NOTIMPL, which means the
> method is not implemented,  Do i need to implement IWebView also? Is there
> anything extra to be done to write my own handler for a particular mime
> type.
> Meanwhile, my aim is to load all the resources from the memory, Idea is
> something like this, all web pages, resources (js, images etc) resides in
> some database, to be particular SQLITE. I want to read this resources and
> pages from the blob, and render it on the WebView, from the memory. For
> Internet Explorer, i have written similar kind of thing, implementing
> IInternetProtocol, thanks to Igor. (
> http://msdn.microsoft.com/en-us/library/aa767883%28v=vs.85%29.aspx). Am i
> following the right approach for the WebKit.
> Sample Code:
>    //Create WebView Instance
>     hr = WebKitCreateInstance(CLSID_WebView, 0, IID_IWebView,
> (void**)&myWebView);
>    //Create IWebDocumentView instance
>     myWebDocumentView = new WinLauncherWebDocumentView();
>     myWebDocumentView->AddRef();
>    //Create IWebDocumentRepresentation Instance
>     myWebDocumentRepresentation = new
> WinLauncherWebDocumentRepresentation();
>     myWebDocumentRepresentation->AddRef();
>     //Register the class
>     hr = myWebView->registerViewClass(myWebDocumentView,
> myWebDocumentRepresentation, L"image/");
> In this case hr is E_NOTIMPL
> EIN? (Please thell me if any extra Information Needed)
> The IWebView::registerViewClass function has never been implemented in
> WebKit. (See <
> http://trac.webkit.org/browser/trunk/Source/WebKit/win/WebView.cpp?rev=96549#L3489
> >.)
> If all you want to do is provide custom data for certain resources and have
> WebKit render the resulting data for you, you might want to investigate
> using IWebResourceLoadDelegate::willSendRequest to modify the URLs of those
> resources to use a custom URL scheme, and then implement a handler for your
> URL scheme that provides the desired data. URL handlers are a feature of
> whatever networking library you're using, not of WebKit itself, so the
> mechanism for implementing one depends on which networking library you're
> using.
> If you really need to provide a custom view, you could investigate
> IWebUIDelegatePrivate::embeddedViewWithArguments and IWebEmbeddedView. This
> lets you supply a custom HWND to be used for rendering an <object> or
> <embed> element.
> -Adam

Sumedh S Bhogle
Mumbai | Mob. 09969085122
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