dom/base/UnbindContext.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /* State that is passed down to UnbindToTree. */
   8
   9 #ifndef mozilla_dom_UnbindContext_h__
  10 #define mozilla_dom_UnbindContext_h__
  11
  12 #include "mozilla/Attributes.h"
  13 #include "nsINode.h"
  14
  15 namespace mozilla::dom {
  16
  17 struct MOZ_STACK_CLASS UnbindContext final {
  18   // The root of the subtree being unbound.
  19   nsINode& Root() const { return mRoot; }
  20   // Whether we're the root of the subtree being unbound.
  21   bool IsUnbindRoot(const nsINode* aNode) const { return &mRoot == aNode; }
  22   // The parent node of the subtree we're unbinding from.
  23   nsINode* GetOriginalSubtreeParent() const { return mOriginalParent; }
  24
  25   explicit UnbindContext(nsINode& aRoot)
  26       : mRoot(aRoot), mOriginalParent(aRoot.GetParentNode()) {}
  27
  28  private:
  29   nsINode& mRoot;
  30   nsINode* const mOriginalParent;
  31 };
  32
  33 }  // namespace mozilla::dom
  34
  35 #endif