mshtml: Added HTMLAttributeCollection_invoke implementation.

dlls/mshtml/htmlelem.c

@@ -2622,12 +2622,36 @@ static HRESULT HTMLAttributeCollection_get_dispid(DispatchEx *dispex, BSTR name,
     return S_OK;
 }
 
-static HRESULT HTMLAttributeCollection_invoke(DispatchEx *dispex, DISPID id, LCID lcid, WORD flags, DISPPARAMS *params,
-        VARIANT *res, EXCEPINFO *ei, IServiceProvider *caller)
+static HRESULT HTMLAttributeCollection_invoke(DispatchEx *dispex, DISPID id, LCID lcid,
+        WORD flags, DISPPARAMS *params, VARIANT *res, EXCEPINFO *ei, IServiceProvider *caller)
 {
     HTMLAttributeCollection *This = HTMLAttributeCollection_from_DispatchEx(dispex);
-    FIXME("(%p)->(%x %x %x %p %p %p %p)\n", This, id, lcid, flags, params, res, ei, caller);
+
+    TRACE("(%p)->(%x %x %x %p %p %p %p)\n", This, id, lcid, flags, params, res, ei, caller);
+
+    switch(flags) {
+    case DISPATCH_PROPERTYGET: {
+        HTMLDOMAttribute *iter;
+
+        id = id-MSHTML_DISPID_CUSTOM_MIN+1;
+
+        LIST_FOR_EACH_ENTRY(iter, &This->attrs, HTMLDOMAttribute, entry) {
+            if(!(--id))
+                break;
+        }
+        if(id)
+            return E_INVALIDARG;
+
+        IHTMLDOMAttribute_AddRef(&iter->IHTMLDOMAttribute_iface);
+        V_VT(res) = VT_DISPATCH;
+        V_DISPATCH(res) = (IDispatch*)&iter->IHTMLDOMAttribute_iface;
+        return S_OK;
+    }
+
+    default:
+        FIXME("unimplemented flags %x\n", flags);
         return E_NOTIMPL;
+    }
 }
 
 static const dispex_static_data_vtbl_t HTMLAttributeCollection_dispex_vtbl = {