mshtml: Added IHTMLElement2::get_scrollTop implementation.

dlls/mshtml/htmlelem2.c

@@ -787,8 +787,26 @@ static HRESULT WINAPI HTMLElement2_put_scrollTop(IHTMLElement2 *iface, long v)
 static HRESULT WINAPI HTMLElement2_get_scrollTop(IHTMLElement2 *iface, long *p)
 {
     HTMLElement *This = HTMLELEM2_THIS(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+    nsIDOMNSHTMLElement *nselem;
+    PRInt32 top = 0;
+    nsresult nsres;
+
+    TRACE("(%p)->(%p)\n", This, p);
+
+    nsres = nsIDOMElement_QueryInterface(This->nselem, &IID_nsIDOMNSHTMLElement, (void**)&nselem);
+    if(NS_SUCCEEDED(nsres)) {
+        nsres = nsIDOMNSHTMLElement_GetScrollTop(nselem, &top);
+        nsIDOMNSHTMLElement_Release(nselem);
+        if(NS_FAILED(nsres))
+            ERR("GetScrollTop failed: %08x\n", nsres);
+    }else {
+        ERR("Could not get nsIDOMNSHTMLElement interface: %08x\n", nsres);
+    }
+
+    *p = top;
+    TRACE("*p = %ld\n", *p);
+
+    return S_OK;
 }
 
 static HRESULT WINAPI HTMLElement2_put_scrollLeft(IHTMLElement2 *iface, long v)

dlls/mshtml/tests/dom.c

@@ -1014,6 +1014,20 @@ static long _elem_get_scroll_width(unsigned line, IUnknown *unk)
     return l;
 }
 
+#define elem_get_scroll_top(u) _elem_get_scroll_top(__LINE__,u)
+static long _elem_get_scroll_top(unsigned line, IUnknown *unk)
+{
+    IHTMLElement2 *elem = _get_elem2_iface(line, unk);
+    long l = -1;
+    HRESULT hres;
+
+    hres = IHTMLElement2_get_scrollTop(elem, &l);
+    ok_(__FILE__,line) (hres == S_OK, "get_scrollTop failed: %08x\n", hres);
+    IHTMLElement2_Release(elem);
+
+    return l;
+}
+
 #define test_img_set_src(u,s) _test_img_set_src(__LINE__,u,s)
 static void _test_img_set_src(unsigned line, IUnknown *unk, const char *src)
 {
@@ -1992,6 +2006,8 @@ static void test_default_body(IHTMLBodyElement *body)
     ok(l != -1, "scrollHeight == -1\n");
     l = elem_get_scroll_width((IUnknown*)body);
     ok(l != -1, "scrollWidth == -1\n");
+    l = elem_get_scroll_top((IUnknown*)body);
+    ok(!l, "scrollWidth = %ld\n", l);
 }
 
 static void test_window(IHTMLDocument2 *doc)