1 files changed, 58 insertions, 0 deletions
diff --git a/dom/base/nsDOMCaretPosition.cpp b/dom/base/nsDOMCaretPosition.cpp
new file mode 100644
index 0000000000..69fdfa5d02
--- /dev/null
+++ b/dom/base/nsDOMCaretPosition.cpp
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsDOMCaretPosition.h"
+
+#include "mozilla/dom/CaretPositionBinding.h"
+#include "mozilla/dom/DOMRect.h"
+#include "mozilla/ErrorResult.h"
+#include "nsRange.h"
+
+using namespace mozilla::dom;
+
+nsDOMCaretPosition::nsDOMCaretPosition(nsINode* aNode, uint32_t aOffset)
+    : mOffset(aOffset), mOffsetNode(aNode), mAnonymousContentNode(nullptr) {}
+
+nsDOMCaretPosition::~nsDOMCaretPosition() = default;
+
+nsINode* nsDOMCaretPosition::GetOffsetNode() const { return mOffsetNode; }
+
+already_AddRefed<DOMRect> nsDOMCaretPosition::GetClientRect() const {
+  if (!mOffsetNode) {
+    return nullptr;
+  }
+
+  nsCOMPtr<nsINode> node;
+  if (mAnonymousContentNode) {
+    node = mAnonymousContentNode;
+  } else {
+    node = mOffsetNode;
+  }
+
+  RefPtr<nsRange> range =
+      nsRange::Create(node, mOffset, node, mOffset, mozilla::IgnoreErrors());
+  if (!range) {
+    return nullptr;
+  }
+  RefPtr<DOMRect> rect = range->GetBoundingClientRect(false);
+  return rect.forget();
+}
+
+JSObject* nsDOMCaretPosition::WrapObject(JSContext* aCx,
+                                         JS::Handle<JSObject*> aGivenProto) {
+  return mozilla::dom::CaretPosition_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCaretPosition, mOffsetNode,
+                                      mAnonymousContentNode)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCaretPosition)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCaretPosition)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCaretPosition)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END