1 files changed, 49 insertions, 0 deletions
diff --git a/layout/inspector/inLayoutUtils.cpp b/layout/inspector/inLayoutUtils.cpp
new file mode 100644
index 0000000000..9a158eb900
--- /dev/null
+++ b/layout/inspector/inLayoutUtils.cpp
@@ -0,0 +1,49 @@
+/* -*- 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 "inLayoutUtils.h"
+
+#include "mozilla/dom/Document.h"
+#include "nsIContent.h"
+#include "nsPIDOMWindow.h"
+#include "nsPresContext.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/dom/DocumentInlines.h"
+#include "mozilla/dom/Element.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+///////////////////////////////////////////////////////////////////////////////
+
+EventStateManager* inLayoutUtils::GetEventStateManagerFor(Element& aElement) {
+  Document* doc = aElement.OwnerDoc();
+  nsPresContext* presContext = doc->GetPresContext();
+  if (!presContext) return nullptr;
+
+  return presContext->EventStateManager();
+}
+
+Document* inLayoutUtils::GetSubDocumentFor(nsINode* aNode) {
+  nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
+  if (content) {
+    nsCOMPtr<Document> doc = content->GetComposedDoc();
+    if (doc) {
+      return doc->GetSubDocumentFor(content);
+    }
+  }
+
+  return nullptr;
+}
+
+nsINode* inLayoutUtils::GetContainerFor(const Document& aDoc) {
+  nsPIDOMWindowOuter* pwin = aDoc.GetWindow();
+  if (!pwin) {
+    return nullptr;
+  }
+
+  return pwin->GetFrameElementInternal();
+}