[PATCH 6/6] uiautomationcore: Implement UiaHUiaNodeFromVariant.

[Connor McAdams]

From: Connor McAdams

Signed-off-by: Connor McAdams 
---
 dlls/uiautomationcore/tests/uiautomation.c  | 90 +++++++++++++++++++++
 dlls/uiautomationcore/uia_client.c          | 37 +++++++++
 dlls/uiautomationcore/uiautomationcore.spec |  2 +-
 include/uiautomationcoreapi.h               |  1 +
 4 files changed, 129 insertions(+), 1 deletion(-)

diff --git a/dlls/uiautomationcore/tests/uiautomation.c b/dlls/uiautomationcore/tests/uiautomation.c
index 9f60a874df0..b1e4cc0f530 100644
--- a/dlls/uiautomationcore/tests/uiautomation.c
+++ b/dlls/uiautomationcore/tests/uiautomation.c
@@ -4835,6 +4835,95 @@ static void test_UiaGetRuntimeId(void)
     CoUninitialize();
 }

+static LONG Object_ref = 1;
+static HRESULT WINAPI Object_QueryInterface(IUnknown *iface, REFIID riid, void **ppv)
+{
+    *ppv = NULL;
+    if (IsEqualIID(riid, &IID_IUnknown))
+    {
+        *ppv = iface;
+        IUnknown_AddRef(iface);
+        return S_OK;
+    }
+
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI Object_AddRef(IUnknown *iface)
+{
+    return InterlockedIncrement(&Object_ref);
+}
+
+static ULONG WINAPI Object_Release(IUnknown *iface)
+{
+    return InterlockedDecrement(&Object_ref);
+}
+
+static IUnknownVtbl ObjectVtbl = {
+    Object_QueryInterface,
+    Object_AddRef,
+    Object_Release
+};
+
+static IUnknown Object = {&ObjectVtbl};
+static void test_UiaHUiaNodeFromVariant(void)
+{
+    HUIANODE node;
+    HRESULT hr;
+    VARIANT v;
+
+    hr = UiaHUiaNodeFromVariant(NULL, &node);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+
+    hr = UiaHUiaNodeFromVariant(&v, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_R8;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+    ok(!node, "node != NULL\n");
+
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_UNKNOWN;
+    V_UNKNOWN(&v) = &Object;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(node == (void *)&Object, "node != NULL\n");
+    ok(Object_ref == 2, "Unexpected Object_ref %ld\n", Object_ref);
+    VariantClear(&v);
+
+#ifdef _WIN64
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_I4;
+    V_I4(&v) = 0xbeefdead;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+    ok(!node, "node != NULL\n");
+
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_I8;
+    V_I8(&v) = 0xbeefdead;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(node == (void *)V_I8(&v), "node != V_I8\n");
+#else
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_I8;
+    V_I8(&v) = 0xbeefdead;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+    ok(!node, "node != NULL\n");
+
+    node = (void *)0xdeadbeef;
+    V_VT(&v) = VT_I4;
+    V_I4(&v) = 0xbeefdead;
+    hr = UiaHUiaNodeFromVariant(&v, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(node == (void *)V_I4(&v), "node != V_I8\n");
+#endif
+}
+
 START_TEST(uiautomation)
 {
     HMODULE uia_dll = LoadLibraryA("uiautomationcore.dll");
@@ -4857,6 +4946,7 @@ START_TEST(uiautomation)
     test_UiaNodeFromProvider();
     test_UiaGetPropertyValue();
     test_UiaGetRuntimeId();
+    test_UiaHUiaNodeFromVariant();
     if (uia_dll)
     {
         pUiaProviderFromIAccessible = (void *)GetProcAddress(uia_dll, "UiaProviderFromIAccessible");
diff --git a/dlls/uiautomationcore/uia_client.c b/dlls/uiautomationcore/uia_client.c
index 0cbcc45761a..85fa9f726f0 100644
--- a/dlls/uiautomationcore/uia_client.c
+++ b/dlls/uiautomationcore/uia_client.c
@@ -979,3 +979,40 @@ HRESULT WINAPI UiaGetRuntimeId(HUIANODE huianode, SAFEARRAY **runtime_id)

return S_OK;
 }
+
+/***********************************************************************
+ *          UiaHUiaNodeFromVariant (uiautomationcore.@)
+ */
+HRESULT WINAPI UiaHUiaNodeFromVariant(VARIANT *in_val, HUIANODE *huianode)
+{
+    const VARTYPE expected_vt = sizeof(void *) == 8 ? VT_I8 : VT_I4;
+
+    TRACE("(%p, %p)\n", in_val, huianode);
+
+    if (!in_val || !huianode)
+        return E_INVALIDARG;
+
+    *huianode = NULL;
+    if ((V_VT(in_val) != expected_vt) && (V_VT(in_val) != VT_UNKNOWN))
+    {
+        WARN("Invalid vt %d\n", V_VT(in_val));
+        return E_INVALIDARG;
+    }
+
+    if (V_VT(in_val) == VT_UNKNOWN)
+    {
+        if (V_UNKNOWN(in_val))
+            IUnknown_AddRef(V_UNKNOWN(in_val));
+        *huianode = (HUIANODE)V_UNKNOWN(in_val);
+    }
+    else
+    {
+#ifdef _WIN64
+        *huianode = (HUIANODE)V_I8(in_val);
+#else
+        *huianode = (HUIANODE)V_I4(in_val);
+#endif
+    }
+
+    return S_OK;
+}
diff --git a/dlls/uiautomationcore/uiautomationcore.spec b/dlls/uiautomationcore/uiautomationcore.spec
index 17e34ee259a..f4e745a644a 100644
--- a/dlls/uiautomationcore/uiautomationcore.spec
+++ b/dlls/uiautomationcore/uiautomationcore.spec
@@ -70,7 +70,7 @@
 @ stub UiaGetUpdatedCache
 @ stub UiaHPatternObjectFromVariant
 @ stub UiaHTextRangeFromVariant
-@ stub UiaHUiaNodeFromVariant
+@ stdcall UiaHUiaNodeFromVariant(ptr ptr)
 @ stub UiaHasServerSideProvider
 @ stdcall UiaHostProviderFromHwnd(long ptr)
 #@ stub UiaIAccessibleFromProvider
diff --git a/include/uiautomationcoreapi.h b/include/uiautomationcoreapi.h
index 78cbca2e25b..946c8b0fadc 100644
--- a/include/uiautomationcoreapi.h
+++ b/include/uiautomationcoreapi.h
@@ -396,6 +396,7 @@ HRESULT WINAPI UiaGetPropertyValue(HUIANODE huianode, PROPERTYID prop_id, VARIAN
 HRESULT WINAPI UiaNodeFromProvider(IRawElementProviderSimple *elprov, HUIANODE *huianode);
 BOOL WINAPI UiaNodeRelease(HUIANODE huianode);
 HRESULT WINAPI UiaGetRuntimeId(HUIANODE huianode, SAFEARRAY **runtime_id);
+HRESULT WINAPI UiaHUiaNodeFromVariant(VARIANT *in_val, HUIANODE *huianode);

#ifdef __cplusplus
 }