1 files changed, 93 insertions, 0 deletions
diff --git a/accessible/windows/ia2/ia2AccessibleRelation.cpp b/accessible/windows/ia2/ia2AccessibleRelation.cpp
new file mode 100644
index 0000000000..1e920c5376
--- /dev/null
+++ b/accessible/windows/ia2/ia2AccessibleRelation.cpp
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=2:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ia2AccessibleRelation.h"
+
+#include "Relation.h"
+#include "nsID.h"
+
+#include "AccessibleRelation_i.c"
+
+using namespace mozilla::a11y;
+
+ia2AccessibleRelation::ia2AccessibleRelation(RelationType aType, Relation* aRel)
+    : mType(aType) {
+  Accessible* target = nullptr;
+  while ((target = aRel->Next())) mTargets.AppendElement(target);
+}
+
+// IUnknown
+
+IMPL_IUNKNOWN_QUERY_HEAD(ia2AccessibleRelation)
+IMPL_IUNKNOWN_QUERY_IFACE(IAccessibleRelation)
+IMPL_IUNKNOWN_QUERY_IFACE(IUnknown)
+IMPL_IUNKNOWN_QUERY_TAIL
+
+// IAccessibleRelation
+
+STDMETHODIMP
+ia2AccessibleRelation::get_relationType(BSTR* aRelationType) {
+  if (!aRelationType) return E_INVALIDARG;
+
+  *aRelationType = nullptr;
+
+#define RELATIONTYPE(geckoType, geckoTypeName, atkType, msaaType, ia2Type) \
+  case RelationType::geckoType:                                            \
+    *aRelationType = ::SysAllocString(ia2Type);                            \
+    break;
+
+  switch (mType) {
+#include "RelationTypeMap.h"
+  }
+
+  return *aRelationType ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+ia2AccessibleRelation::get_localizedRelationType(BSTR* aLocalizedRelationType) {
+  if (!aLocalizedRelationType) return E_INVALIDARG;
+
+  *aLocalizedRelationType = nullptr;
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP
+ia2AccessibleRelation::get_nTargets(long* aNTargets) {
+  if (!aNTargets) return E_INVALIDARG;
+
+  *aNTargets = mTargets.Length();
+  return S_OK;
+}
+
+STDMETHODIMP
+ia2AccessibleRelation::get_target(long aTargetIndex, IUnknown** aTarget) {
+  if (aTargetIndex < 0 || (uint32_t)aTargetIndex >= mTargets.Length() ||
+      !aTarget)
+    return E_INVALIDARG;
+
+  AccessibleWrap* target =
+      static_cast<AccessibleWrap*>(mTargets[aTargetIndex].get());
+  *aTarget = static_cast<IAccessible*>(target);
+  (*aTarget)->AddRef();
+
+  return S_OK;
+}
+
+STDMETHODIMP
+ia2AccessibleRelation::get_targets(long aMaxTargets, IUnknown** aTargets,
+                                   long* aNTargets) {
+  if (!aNTargets || !aTargets) return E_INVALIDARG;
+
+  *aNTargets = 0;
+  long maxTargets = mTargets.Length();
+  if (maxTargets > aMaxTargets) maxTargets = aMaxTargets;
+
+  for (long idx = 0; idx < maxTargets; idx++) get_target(idx, aTargets + idx);
+
+  *aNTargets = maxTargets;
+  return S_OK;
+}