uiautomationcore: Add a default ProviderType_Proxy MSAA bridge clientside provider.

dlls/uiautomationcore/tests/uiautomation.c

@@ -90,6 +90,7 @@ DEFINE_EXPECT(Accessible2_get_accName);
 DEFINE_EXPECT(Accessible2_get_accRole);
 DEFINE_EXPECT(Accessible2_get_accState);
 DEFINE_EXPECT(Accessible2_accLocation);
+DEFINE_EXPECT(Accessible_QI_IAccIdentity);
 DEFINE_EXPECT(Accessible2_QI_IAccIdentity);
 DEFINE_EXPECT(Accessible2_get_uniqueID);
 DEFINE_EXPECT(Accessible_child_accNavigate);
@@ -177,7 +178,10 @@ static HRESULT WINAPI Accessible_QueryInterface(IAccessible *iface, REFIID riid,
     {
         if (This == &Accessible2)
             CHECK_EXPECT(Accessible2_QI_IAccIdentity);
-        ok(This == &Accessible2, "unexpected call\n");
+        else if (This == &Accessible)
+            CHECK_EXPECT(Accessible_QI_IAccIdentity);
+
+        ok(This == &Accessible2 || This == &Accessible, "unexpected call\n");
         return E_NOINTERFACE;
     }
 
@@ -6738,10 +6742,17 @@ static void test_UiaNodeFromHandle(const char *name)
     /* Only sent twice on Win7. */
     SET_EXPECT_MULTI(winproc_GETOBJECT_CLIENT, 2);
     hr = UiaNodeFromHandle(hwnd, &node);
-    /* Windows 10 and below return E_FAIL, Windows 11 returns S_OK. */
-    ok(hr == S_OK || broken(hr == E_FAIL), "Unexpected hr %#lx.\n", hr);
+    /*
+     * On all versions of Windows prior to Windows 11, this would fail due to
+     * COM being uninitialized, presumably because it tries to get an MSAA
+     * proxy. Windows 11 now has the thread end up in an implicit MTA after
+     * the call to UiaNodeFromHandle, which is probably why this now succeeds.
+     * I don't know of anything that relies on this behavior, so for now we
+     * won't match it.
+     */
+    todo_wine ok(hr == S_OK || broken(hr == E_FAIL), "Unexpected hr %#lx.\n", hr);
     CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
-    todo_wine CHECK_CALLED(winproc_GETOBJECT_CLIENT);
+    CHECK_CALLED(winproc_GETOBJECT_CLIENT);
     if (SUCCEEDED(hr))
         UiaNodeRelease(node);
 
@@ -6757,7 +6768,7 @@ static void test_UiaNodeFromHandle(const char *name)
     hr = UiaNodeFromHandle(hwnd, &node);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
-    todo_wine CHECK_CALLED(winproc_GETOBJECT_CLIENT);
+    CHECK_CALLED(winproc_GETOBJECT_CLIENT);
 
     hr = UiaGetPropertyValue(node, UIA_ProviderDescriptionPropertyId, &v);
     ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
@@ -6783,7 +6794,7 @@ static void test_UiaNodeFromHandle(const char *name)
     hr = UiaNodeFromHandle(hwnd, &node);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
-    todo_wine CHECK_CALLED(winproc_GETOBJECT_CLIENT);
+    CHECK_CALLED(winproc_GETOBJECT_CLIENT);
 
     hr = UiaGetPropertyValue(node, UIA_ProviderDescriptionPropertyId, &v);
     ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
@@ -6818,7 +6829,7 @@ static void test_UiaNodeFromHandle(const char *name)
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     ok(Provider.ref == 1 || broken(Provider.ref == 2), "Unexpected refcnt %ld\n", Provider.ref);
     CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
-    todo_wine CHECK_CALLED(winproc_GETOBJECT_CLIENT);
+    CHECK_CALLED(winproc_GETOBJECT_CLIENT);
 
     hr = UiaGetPropertyValue(node, UIA_ProviderDescriptionPropertyId, &v);
     ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
@@ -12684,6 +12695,93 @@ static void test_default_clientside_providers(void)
     UiaNodeRelease(node);
     prov_root = NULL;
 
+    /*
+     * Test default ProviderType_Proxy clientside provider. Provider will be
+     * the HWND provider for this node, and Accessible will be the main
+     * provider.
+     */
+    initialize_provider(&Provider, ProviderOptions_ClientSideProvider, hwnd, FALSE);
+    set_accessible_props(&Accessible, ROLE_SYSTEM_TEXT, STATE_SYSTEM_FOCUSABLE, 0, L"Accessible", 0, 0, 20, 20);
+    set_accessible_ia2_props(&Accessible, FALSE, 0);
+    acc_client = &Accessible.IAccessible_iface;
+    prov_root = child_win_prov_root = NULL;
+
+    SET_EXPECT(Accessible_QI_IAccIdentity);
+    SET_EXPECT(Accessible_get_accParent);
+    SET_EXPECT(winproc_GETOBJECT_UiaRoot);
+    /* Only sent twice on Win7. */
+    SET_EXPECT_MULTI(winproc_GETOBJECT_CLIENT, 2);
+    hr = UiaNodeFromProvider(&Provider.IRawElementProviderSimple_iface, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(Provider.ref == 2, "Unexpected refcnt %ld\n", Provider.ref);
+    ok(Accessible.ref >= 2, "Unexpected refcnt %ld\n", Accessible.ref);
+    todo_wine CHECK_CALLED(Accessible_QI_IAccIdentity);
+    todo_wine CHECK_CALLED(Accessible_get_accParent);
+    CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
+    CHECK_CALLED(winproc_GETOBJECT_CLIENT);
+
+    hr = UiaGetPropertyValue(node, UIA_ProviderDescriptionPropertyId, &v);
+    ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
+    check_node_provider_desc_prefix(V_BSTR(&v), GetCurrentProcessId(), hwnd);
+    check_node_provider_desc(V_BSTR(&v), L"Hwnd", L"Provider", FALSE);
+    check_node_provider_desc_todo(V_BSTR(&v), L"Nonclient", NULL, FALSE);
+    check_node_provider_desc(V_BSTR(&v), L"Main", NULL, TRUE);
+    VariantClear(&v);
+
+    SET_EXPECT(Accessible_get_accRole);
+    hr = UiaGetPropertyValue(node, UIA_ControlTypePropertyId, &v);
+    ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
+    ok(V_VT(&v) == VT_I4, "Unexpected VT %d\n", V_VT(&v));
+    ok(V_I4(&v) == UIA_EditControlTypeId, "Unexpected I4 %#lx\n", V_I4(&v));
+    VariantClear(&v);
+    CHECK_CALLED(Accessible_get_accRole);
+
+    UiaNodeRelease(node);
+    ok(Provider.ref == 1, "Unexpected refcnt %ld\n", Provider.ref);
+    ok(Accessible.ref == 1, "Unexpected refcnt %ld\n", Accessible.ref);
+
+    /*
+     * Unlike UiaProviderFromIAccessible which won't create a provider for an
+     * MSAA proxy, the default clientside proxy provider will.
+     */
+    hwnd2 = CreateWindowA("EDIT", "", WS_VISIBLE | WS_CHILD | ES_PASSWORD,
+            0, 0, 100, 100, hwnd, NULL, NULL, NULL);
+    initialize_provider(&Provider, ProviderOptions_ClientSideProvider, hwnd2, FALSE);
+
+    /* Tries to get override provider from parent HWND. */
+    SET_EXPECT(winproc_GETOBJECT_UiaRoot);
+    hr = UiaNodeFromProvider(&Provider.IRawElementProviderSimple_iface, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(Provider.ref == 2, "Unexpected refcnt %ld\n", Provider.ref);
+    todo_wine CHECK_CALLED(winproc_GETOBJECT_UiaRoot);
+
+    hr = UiaGetPropertyValue(node, UIA_ProviderDescriptionPropertyId, &v);
+    ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
+    check_node_provider_desc_prefix(V_BSTR(&v), GetCurrentProcessId(), hwnd2);
+    check_node_provider_desc(V_BSTR(&v), L"Hwnd", L"Provider", FALSE);
+    check_node_provider_desc_todo(V_BSTR(&v), L"Main", NULL, FALSE);
+    check_node_provider_desc_todo(V_BSTR(&v), L"Annotation", NULL, TRUE);
+    VariantClear(&v);
+
+    hr = UiaGetPropertyValue(node, UIA_ControlTypePropertyId, &v);
+    ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
+    ok(V_VT(&v) == VT_I4, "Unexpected VT %d\n", V_VT(&v));
+    ok(V_I4(&v) == UIA_EditControlTypeId, "Unexpected I4 %#lx\n", V_I4(&v));
+    VariantClear(&v);
+
+    hr = UiaGetPropertyValue(node, UIA_IsPasswordPropertyId, &v);
+    ok(hr == S_OK, "Unexpected hr %#lx\n", hr);
+    ok(V_VT(&v) == VT_BOOL, "Unexpected VT %d\n", V_VT(&v));
+    ok(check_variant_bool(&v, TRUE), "V_BOOL(&v) = %#x\n", V_BOOL(&v));
+    VariantClear(&v);
+
+    UiaNodeRelease(node);
+    DestroyWindow(hwnd2);
+
+    set_accessible_props(&Accessible, 0, 0, 0, NULL, 0, 0, 0, 0);
+    acc_client = NULL;
+    prov_root = child_win_prov_root = NULL;
+
     method_sequences_enabled = TRUE;
     DestroyWindow(hwnd);
     DestroyWindow(hwnd_child);

dlls/uiautomationcore/uia_client.c

@@ -2653,9 +2653,21 @@ static SAFEARRAY WINAPI *default_uia_provider_callback(HWND hwnd, enum ProviderT
     switch (prov_type)
     {
     case ProviderType_Proxy:
-        FIXME("Default ProviderType_Proxy MSAA provider unimplemented.\n");
+    {
+        IAccessible *acc;
+
+        hr = AccessibleObjectFromWindow(hwnd, OBJID_CLIENT, &IID_IAccessible, (void **)&acc);
+        if (FAILED(hr) || !acc)
             break;
 
+        hr = create_msaa_provider(acc, CHILDID_SELF, hwnd, TRUE, &elprov);
+        if (FAILED(hr))
+            WARN("Failed to create MSAA proxy provider with hr %#lx\n", hr);
+
+        IAccessible_Release(acc);
+        break;
+    }
+
     case ProviderType_NonClientArea:
         FIXME("Default ProviderType_NonClientArea provider unimplemented.\n");
         break;

dlls/uiautomationcore/uia_private.h

@@ -155,3 +155,5 @@ HRESULT create_base_hwnd_provider(HWND hwnd, IRawElementProviderSimple **elprov)
 void uia_stop_provider_thread(void) DECLSPEC_HIDDEN;
 void uia_provider_thread_remove_node(HUIANODE node) DECLSPEC_HIDDEN;
 LRESULT uia_lresult_from_node(HUIANODE huianode) DECLSPEC_HIDDEN;
+HRESULT create_msaa_provider(IAccessible *acc, long child_id, HWND hwnd, BOOL known_root_acc,
+        IRawElementProviderSimple **elprov) DECLSPEC_HIDDEN;

dlls/uiautomationcore/uia_provider.c

@@ -796,7 +796,7 @@ static HRESULT WINAPI msaa_fragment_Navigate(IRawElementProviderFragment *iface,
         else
             acc = msaa_prov->acc;
 
-        hr = UiaProviderFromIAccessible(acc, CHILDID_SELF, 0, &elprov);
+        hr = create_msaa_provider(acc, CHILDID_SELF, NULL, FALSE, &elprov);
         if (SUCCEEDED(hr))
         {
             struct msaa_provider *prov = impl_from_msaa_provider(elprov);
@@ -827,7 +827,7 @@ static HRESULT WINAPI msaa_fragment_Navigate(IRawElementProviderFragment *iface,
         if (FAILED(hr) || !acc)
             break;
 
-        hr = UiaProviderFromIAccessible(acc, child_id, 0, &elprov);
+        hr = create_msaa_provider(acc, child_id, NULL, FALSE, &elprov);
         if (SUCCEEDED(hr))
         {
             struct msaa_provider *prov = impl_from_msaa_provider(elprov);
@@ -877,7 +877,7 @@ static HRESULT WINAPI msaa_fragment_Navigate(IRawElementProviderFragment *iface,
         if (FAILED(hr) || !acc)
             break;
 
-        hr = UiaProviderFromIAccessible(acc, child_id, 0, &elprov);
+        hr = create_msaa_provider(acc, child_id, NULL, FALSE, &elprov);
         if (SUCCEEDED(hr))
         {
             struct msaa_provider *prov = impl_from_msaa_provider(elprov);
@@ -1134,13 +1134,48 @@ static const ILegacyIAccessibleProviderVtbl msaa_acc_provider_vtbl = {
     msaa_acc_provider_get_DefaultAction,
 };
 
+HRESULT create_msaa_provider(IAccessible *acc, long child_id, HWND hwnd, BOOL known_root_acc,
+        IRawElementProviderSimple **elprov)
+{
+    struct msaa_provider *msaa_prov = heap_alloc_zero(sizeof(*msaa_prov));
+
+    if (!msaa_prov)
+        return E_OUTOFMEMORY;
+
+    msaa_prov->IRawElementProviderSimple_iface.lpVtbl = &msaa_provider_vtbl;
+    msaa_prov->IRawElementProviderFragment_iface.lpVtbl = &msaa_fragment_vtbl;
+    msaa_prov->ILegacyIAccessibleProvider_iface.lpVtbl = &msaa_acc_provider_vtbl;
+    msaa_prov->refcount = 1;
+    variant_init_i4(&msaa_prov->cid, child_id);
+    msaa_prov->acc = acc;
+    IAccessible_AddRef(acc);
+    msaa_prov->ia2 = msaa_acc_get_ia2(acc);
+
+    if (!hwnd)
+    {
+        HRESULT hr;
+
+        hr = WindowFromAccessibleObject(acc, &msaa_prov->hwnd);
+        if (FAILED(hr))
+            WARN("WindowFromAccessibleObject failed with hr %#lx\n", hr);
+    }
+    else
+        msaa_prov->hwnd = hwnd;
+
+    if (known_root_acc)
+        msaa_prov->root_acc_check_ran = msaa_prov->is_root_acc = TRUE;
+
+    *elprov = &msaa_prov->IRawElementProviderSimple_iface;
+
+    return S_OK;
+}
+
 /***********************************************************************
  *          UiaProviderFromIAccessible (uiautomationcore.@)
  */
 HRESULT WINAPI UiaProviderFromIAccessible(IAccessible *acc, long child_id, DWORD flags,
         IRawElementProviderSimple **elprov)
 {
-    struct msaa_provider *msaa_prov;
     IServiceProvider *serv_prov;
     HWND hwnd = NULL;
     HRESULT hr;
@@ -1184,22 +1219,7 @@ HRESULT WINAPI UiaProviderFromIAccessible(IAccessible *acc, long child_id, DWORD
     if (!hwnd)
         return E_FAIL;
 
-    msaa_prov = heap_alloc_zero(sizeof(*msaa_prov));
-    if (!msaa_prov)
-        return E_OUTOFMEMORY;
-
-    msaa_prov->IRawElementProviderSimple_iface.lpVtbl = &msaa_provider_vtbl;
-    msaa_prov->IRawElementProviderFragment_iface.lpVtbl = &msaa_fragment_vtbl;
-    msaa_prov->ILegacyIAccessibleProvider_iface.lpVtbl = &msaa_acc_provider_vtbl;
-    msaa_prov->refcount = 1;
-    msaa_prov->hwnd = hwnd;
-    variant_init_i4(&msaa_prov->cid, child_id);
-    msaa_prov->acc = acc;
-    IAccessible_AddRef(acc);
-    msaa_prov->ia2 = msaa_acc_get_ia2(acc);
-    *elprov = &msaa_prov->IRawElementProviderSimple_iface;
-
-    return S_OK;
+    return create_msaa_provider(acc, child_id, hwnd, FALSE, elprov);
 }
 
 static HRESULT uia_get_hr_for_last_error(void)