| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef OpenedFrameTracker_h |
| #define OpenedFrameTracker_h |
| |
| #include "wtf/HashSet.h" |
| #include "wtf/Noncopyable.h" |
| |
| namespace blink { |
| |
| class Visitor; |
| class InlinedGlobalMarkingVisitor; |
| class WebFrame; |
| |
| // Small helper class to track the set of frames that a WebFrame has opened. |
| // Due to layering restrictions, we need to hide the implementation, since |
| // public/web/ cannot depend on wtf/. |
| class OpenedFrameTracker { |
| WTF_MAKE_NONCOPYABLE(OpenedFrameTracker); |
| public: |
| OpenedFrameTracker(); |
| ~OpenedFrameTracker(); |
| |
| bool isEmpty() const; |
| void add(WebFrame*); |
| void remove(WebFrame*); |
| |
| // Updates the opener for all tracked frames. |
| void updateOpener(WebFrame*); |
| |
| void traceFrames(Visitor*); |
| void traceFrames(InlinedGlobalMarkingVisitor); |
| |
| private: |
| template <typename VisitorDispatcher> |
| void traceFramesImpl(VisitorDispatcher); |
| |
| WTF::HashSet<WebFrame*> m_openedFrames; |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebFramePrivate_h |