mshtml: Get owner document from Gecko node in get_node.

dlls/mshtml/htmldoc.c

@@ -5205,6 +5205,25 @@ static HRESULT create_document_fragment(nsIDOMNode *nsnode, HTMLDocumentNode *do
     return S_OK;
 }
 
+HRESULT get_document_node(nsIDOMDocument *dom_document, HTMLDocumentNode **ret)
+{
+    HTMLDOMNode *node;
+    HRESULT hres;
+
+    hres = get_node(NULL, (nsIDOMNode*)dom_document, FALSE, &node);
+    if(FAILED(hres))
+        return hres;
+
+    if(!node) {
+        ERR("document not initialized\n");
+        return E_FAIL;
+    }
+
+    assert(node->vtbl == &HTMLDocumentNodeImplVtbl);
+    *ret = impl_from_HTMLDOMNode(node);
+    return S_OK;
+}
+
 static inline HTMLDocumentObj *impl_from_IUnknown(IUnknown *iface)
 {
     return CONTAINING_RECORD(iface, HTMLDocumentObj, IUnknown_outer);

dlls/mshtml/htmlnode.c

@@ -1616,8 +1616,11 @@ void init_node_cc(void)
 
 HRESULT get_node(HTMLDocumentNode *This, nsIDOMNode *nsnode, BOOL create, HTMLDOMNode **ret)
 {
+    nsIDOMDocument *dom_document;
+    HTMLDocumentNode *document;
     nsISupports *unk = NULL;
     nsresult nsres;
+    HRESULT hres;
 
     nsres = nsIDOMNode_GetMshtmlNode(nsnode, &unk);
     assert(nsres == NS_OK);
@@ -1633,5 +1636,18 @@ HRESULT get_node(HTMLDocumentNode *This, nsIDOMNode *nsnode, BOOL create, HTMLDO
         return S_OK;
     }
 
-    return create_node(This, nsnode, ret);
+    nsres = nsIDOMNode_GetOwnerDocument(nsnode, &dom_document);
+    if(NS_FAILED(nsres) || !dom_document) {
+        ERR("GetOwnerDocument failed: %08x\n", nsres);
+        return E_FAIL;
+    }
+
+    hres = get_document_node(dom_document, &document);
+    nsIDOMDocument_Release(dom_document);
+    if(!document)
+        return E_FAIL;
+
+    hres = create_node(document, nsnode, ret);
+    htmldoc_release(&document->basedoc);
+    return hres;
 }

dlls/mshtml/mshtml_private.h

@@ -1074,6 +1074,7 @@ void HTMLFrameBase_destructor(HTMLFrameBase*) DECLSPEC_HIDDEN;
 
 HRESULT get_node(HTMLDocumentNode*,nsIDOMNode*,BOOL,HTMLDOMNode**) DECLSPEC_HIDDEN;
 HRESULT get_elem(HTMLDocumentNode*,nsIDOMElement*,HTMLElement**) DECLSPEC_HIDDEN;
+HRESULT get_document_node(nsIDOMDocument*,HTMLDocumentNode**) DECLSPEC_HIDDEN;
 
 HTMLElement *unsafe_impl_from_IHTMLElement(IHTMLElement*) DECLSPEC_HIDDEN;