third_party/WebKit/Source/core/dom/ChildFrameDisconnector.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ChildFrameDisconnector_h
   6 #define ChildFrameDisconnector_h
   7
   8 #include "platform/heap/Handle.h"
   9
  10 namespace blink {
  11
  12 class ElementShadow;
  13 class HTMLFrameOwnerElement;
  14 class Node;
  15
  16 class ChildFrameDisconnector {
  17     STACK_ALLOCATED();
  18 public:
  19     enum DisconnectPolicy {
  20         RootAndDescendants,
  21         DescendantsOnly
  22     };
  23
  24     explicit ChildFrameDisconnector(Node& root)
  25         : m_root(root)
  26     {
  27     }
  28
  29     void disconnect(DisconnectPolicy = RootAndDescendants);
  30
  31 private:
  32     void collectFrameOwners(Node&);
  33     void collectFrameOwners(ElementShadow&);
  34     void disconnectCollectedFrameOwners();
  35     Node& root() const { return *m_root; }
  36
  37     WillBeHeapVector<RefPtrWillBeMember<HTMLFrameOwnerElement>, 10> m_frameOwners;
  38     RawPtrWillBeMember<Node> m_root;
  39 };
  40
  41 } // namespace blink
  42
  43 #endif // ChildFrameDisconnector_h