1 files changed, 71 insertions, 0 deletions
diff --git a/dom/base/nsIContentInlines.h b/dom/base/nsIContentInlines.h
new file mode 100644
index 0000000000..368a0422b1
--- /dev/null
+++ b/dom/base/nsIContentInlines.h
@@ -0,0 +1,71 @@
+/* -*- 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/. */
+
+#ifndef nsIContentInlines_h
+#define nsIContentInlines_h
+
+#include "nsIContent.h"
+#include "nsIDocument.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/Element.h"
+
+inline bool
+nsIContent::IsInHTMLDocument() const
+{
+  return OwnerDoc()->IsHTMLDocument();
+}
+
+inline bool
+nsIContent::IsInChromeDocument() const
+{
+  return nsContentUtils::IsChromeDoc(OwnerDoc());
+}
+
+inline mozilla::dom::ShadowRoot* nsIContent::GetShadowRoot() const
+{
+  if (!IsElement()) {
+    return nullptr;
+  }
+
+  return AsElement()->FastGetShadowRoot();
+}
+
+inline nsINode* nsINode::GetFlattenedTreeParentNode() const
+{
+  nsINode* parent = GetParentNode();
+
+  // Try to short-circuit past the complicated and not-exactly-fast logic for
+  // computing the flattened parent.
+  //
+  // There are three cases where we need might something other than parentNode:
+  //   (1) The node is an explicit child of an XBL-bound element, re-bound
+  //       to an XBL insertion point.
+  //   (2) The node is a top-level element in a shadow tree, whose flattened
+  //       parent is the host element (as opposed to the actual parent which
+  //       is the shadow root).
+  //   (3) The node is an explicit child of an element with a shadow root,
+  //       re-bound to an insertion point.
+  bool needSlowCall = HasFlag(NODE_MAY_BE_IN_BINDING_MNGR) ||
+                      IsInShadowTree() ||
+                      (parent && parent->IsContent() &&
+                       parent->AsContent()->GetShadowRoot());
+  if (MOZ_UNLIKELY(needSlowCall)) {
+    MOZ_ASSERT(IsContent());
+    return AsContent()->GetFlattenedTreeParentNodeInternal();
+  }
+
+  return parent;
+}
+
+inline nsIContent*
+nsIContent::GetFlattenedTreeParent() const
+{
+  nsINode* parent = GetFlattenedTreeParentNode();
+  return (parent && parent->IsContent()) ? parent->AsContent() : nullptr;
+}
+
+
+#endif // nsIContentInlines_h