chromium/third_party/blink/renderer/core/css/container_selector.h

// Copyright 2022 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_CSS_CONTAINER_SELECTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CONTAINER_SELECTOR_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/media_query_exp.h"
#include "third_party/blink/renderer/core/layout/geometry/axis.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/text/writing_mode.h"
#include "third_party/blink/renderer/platform/wtf/hash_functions.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h"

namespace blink {

class Element;

// Not to be confused with regular selectors. This refers to container
// selection by e.g. a given name, or by implicit container selection
// according to the queried features.
//
// https://drafts.csswg.org/css-contain-3/#container-rule
class CORE_EXPORT ContainerSelector { … };

class ScopedContainerSelector
    : public GarbageCollected<ScopedContainerSelector> { … };

struct ScopedContainerSelectorHashTraits
    : WTF::MemberHashTraits<ScopedContainerSelector> { … };

// Helper needed to allow calling Find() with a ScopedContainerSelector instead
// of Member<ScopedContainerSelector>
struct ScopedContainerSelectorHashTranslator { … };

}  // namespace blink

namespace WTF {

template <>
struct HashTraits<blink::ContainerSelector>
    : SimpleClassHashTraits<blink::ContainerSelector> { … };

}  // namespace WTF

namespace blink {

ContainerSelectorCache;

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CONTAINER_SELECTOR_H_