mshtml: Add IHTMLWindow7::getComputedStyle implementation.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/mshtml/htmlstyle.c

@@ -10236,6 +10236,28 @@ HRESULT HTMLStyle_Create(HTMLElement *elem, HTMLStyle **ret)
     return S_OK;
 }
 
+static const tid_t HTMLW3CComputedStyle_iface_tids[] = {
+    0
+};
+static dispex_static_data_t HTMLW3CComputedStyle_dispex = {
+    &CSSStyle_dispex_vtbl,
+    DispHTMLW3CComputedStyle_tid,
+    HTMLW3CComputedStyle_iface_tids,
+    CSSStyle_init_dispex_info
+};
+
+HRESULT create_computed_style(nsIDOMCSSStyleDeclaration *nsstyle, IHTMLCSSStyleDeclaration **p)
+{
+    CSSStyle *style;
+
+    if(!(style = heap_alloc_zero(sizeof(*style))))
+        return E_OUTOFMEMORY;
+
+    init_css_style(style, nsstyle, NULL, &HTMLW3CComputedStyle_dispex, COMPAT_MODE_IE11);
+    *p = &style->IHTMLCSSStyleDeclaration_iface;
+    return S_OK;
+}
+
 HRESULT get_elem_style(HTMLElement *elem, styleid_t styleid, BSTR *ret)
 {
     nsIDOMCSSStyleDeclaration *style;

dlls/mshtml/htmlstyle.h

@@ -137,6 +137,7 @@ typedef enum {
 } styleid_t;
 
 HRESULT HTMLStyle_Create(HTMLElement*,HTMLStyle**) DECLSPEC_HIDDEN;
+HRESULT create_computed_style(nsIDOMCSSStyleDeclaration*,IHTMLCSSStyleDeclaration**) DECLSPEC_HIDDEN;
 void init_css_style(CSSStyle*,nsIDOMCSSStyleDeclaration*,style_qi_t,
                     dispex_static_data_t*,compat_mode_t) DECLSPEC_HIDDEN;
 

dlls/mshtml/htmlwindow.c

@@ -38,6 +38,7 @@
 #include "mshtml_private.h"
 #include "htmlevent.h"
 #include "htmlscript.h"
+#include "htmlstyle.h"
 #include "pluginhost.h"
 #include "binding.h"
 #include "resource.h"
@@ -2322,8 +2323,42 @@ static HRESULT WINAPI HTMLWindow7_getComputedStyle(IHTMLWindow7 *iface, IHTMLDOM
                                                    BSTR pseudo_elt, IHTMLCSSStyleDeclaration **p)
 {
     HTMLWindow *This = impl_from_IHTMLWindow7(iface);
-    FIXME("(%p)->(%p %s %p)\n", This, node, debugstr_w(pseudo_elt), p);
-    return E_NOTIMPL;
+    nsIDOMCSSStyleDeclaration *nsstyle;
+    nsAString pseudo_elt_str;
+    HTMLElement *element;
+    IHTMLElement *elem;
+    nsresult nsres;
+    HRESULT hres;
+
+    TRACE("(%p)->(%p %s %p)\n", This, node, debugstr_w(pseudo_elt), p);
+
+    if(!This->outer_window)
+        return E_UNEXPECTED;
+
+    hres = IHTMLDOMNode_QueryInterface(node, &IID_IHTMLElement, (void**)&elem);
+    if(FAILED(hres))
+        return hres;
+
+    element = unsafe_impl_from_IHTMLElement(elem);
+    if(!element) {
+        WARN("Not our element\n");
+        IHTMLElement_Release(elem);
+        return E_INVALIDARG;
+    }
+
+    nsAString_Init(&pseudo_elt_str, NULL);
+    nsres = nsIDOMWindow_GetComputedStyle(This->outer_window->nswindow, element->dom_element,
+                                          &pseudo_elt_str, &nsstyle);
+    IHTMLElement_Release(elem);
+    nsAString_Finish(&pseudo_elt_str);
+    if(NS_FAILED(nsres)) {
+        FIXME("GetComputedStyle failed: %08x\n", nsres);
+        return E_FAIL;
+    }
+
+    hres = create_computed_style(nsstyle, p);
+    nsIDOMCSSStyleDeclaration_Release(nsstyle);
+    return hres;
 }
 
 static HRESULT WINAPI HTMLWindow7_get_styleMedia(IHTMLWindow7 *iface, IHTMLStyleMedia **p)

dlls/mshtml/mshtml_private.h

@@ -128,6 +128,7 @@ typedef struct EventTarget EventTarget;
     XDIID(DispHTMLTextAreaElement) \
     XDIID(DispHTMLTitleElement) \
     XDIID(DispHTMLUnknownElement) \
+    XDIID(DispHTMLW3CComputedStyle) \
     XDIID(DispHTMLWindow2) \
     XDIID(DispHTMLXMLHttpRequest) \
     XDIID(HTMLDocumentEvents) \

dlls/mshtml/tests/dom.c

@@ -463,6 +463,14 @@ static const IID * const cstyle_iids[] = {
     NULL
 };
 
+static const IID * const computed_style_iids[] = {
+    &IID_IUnknown,
+    &IID_IDispatch,
+    &IID_IDispatchEx,
+    &IID_IHTMLCSSStyleDeclaration,
+    NULL
+};
+
 static const IID * const img_factory_iids[] = {
     &IID_IUnknown,
     &IID_IDispatch,
@@ -6879,7 +6887,10 @@ static void test_window(IHTMLDocument2 *doc)
 
     hres = IHTMLWindow2_QueryInterface(window, &IID_IHTMLWindow7, (void**)&window7);
     if(SUCCEEDED(hres)) {
+        IHTMLCSSStyleDeclaration *computed_style;
         IHTMLPerformance *performance;
+        IHTMLDOMNode *node;
+        IHTMLElement *elem;
 
         ok(window7 != NULL, "window7 == NULL\n");
 
@@ -6907,6 +6918,25 @@ static void test_window(IHTMLDocument2 *doc)
 
             IHTMLWindow7_Release(window7);
         }
+
+        hres = IHTMLDocument2_get_body(doc, &elem);
+        ok(hres == S_OK, "get_body failed: %08x\n", hres);
+
+        hres = IHTMLElement_QueryInterface(elem, &IID_IHTMLDOMNode, (void**)&node);
+        ok(hres == S_OK, "Could not get IHTMLDOMNode iface: %08x\n", hres);
+
+        hres = IHTMLWindow7_getComputedStyle(window7, node, NULL, &computed_style);
+        ok(hres == S_OK, "getComputedStyle failed: %08x\n", hres);
+
+        test_disp((IUnknown*)computed_style, &DIID_DispHTMLW3CComputedStyle, NULL, "[object]");
+        test_ifaces((IUnknown*)computed_style, computed_style_iids);
+
+        test_read_only_style(computed_style);
+
+        IHTMLCSSStyleDeclaration_Release(computed_style);
+
+        IHTMLDOMNode_Release(node);
+        IHTMLElement_Release(elem);
     }else {
         win_skip("IHTMLWindow7 not supported\n");
     }