| // Copyright 2015 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 FrameRequestCallbackCollection_h |
| #define FrameRequestCallbackCollection_h |
| |
| #include "core/CoreExport.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class ExecutionContext; |
| class FrameRequestCallback; |
| |
| class CORE_EXPORT FrameRequestCallbackCollection final { |
| DISALLOW_ALLOCATION(); |
| public: |
| explicit FrameRequestCallbackCollection(ExecutionContext*); |
| |
| using CallbackId = int; |
| CallbackId registerCallback(FrameRequestCallback*); |
| void cancelCallback(CallbackId); |
| void executeCallbacks(double highResNowMs, double highResNowMsLegacy); |
| |
| bool isEmpty() const { return !m_callbacks.size(); } |
| |
| DECLARE_TRACE(); |
| |
| private: |
| using CallbackList = PersistentHeapVectorWillBeHeapVector<Member<FrameRequestCallback>>; |
| CallbackList m_callbacks; |
| CallbackList m_callbacksToInvoke; // only non-empty while inside executeCallbacks |
| |
| CallbackId m_nextCallbackId = 0; |
| |
| RawPtrWillBeMember<ExecutionContext> m_context; |
| }; |
| |
| } // namespace blink |
| |
| #endif // FrameRequestCallbackCollection_h |