chromium/third_party/blink/renderer/core/display_lock/display_lock_document_state.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_DISPLAY_LOCK_DISPLAY_LOCK_DOCUMENT_STATE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DISPLAY_LOCK_DISPLAY_LOCK_DOCUMENT_STATE_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/display_lock/display_lock_utilities.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_set.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"

namespace blink {

class DisplayLockContext;
class Document;
class Element;
class IntersectionObserver;
class IntersectionObserverEntry;

// This class is responsible for keeping document level state for the display
// locking feature.
class CORE_EXPORT DisplayLockDocumentState final
    : public GarbageCollected<DisplayLockDocumentState> { … };

}  // namespace blink

// This ensures |blink::DisplayLockDocumentState::ForcedNodeInfo| does not touch
// other on-heap objects in its destructor and so it can be cleared with memset.
// This is needed to allocate it in HeapVector directly.
WTF_ALLOW_CLEAR_UNUSED_SLOTS_WITH_MEM_FUNCTIONS(…)
WTF_ALLOW_CLEAR_UNUSED_SLOTS_WITH_MEM_FUNCTIONS(…)

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_DISPLAY_LOCK_DISPLAY_LOCK_DOCUMENT_STATE_H_