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/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CSSAnchorValue.h"
#include "EventTarget.h"
#include <memory>
#include <wtf/HashMap.h>
#include <wtf/WeakHashMap.h>
#include <wtf/WeakHashSet.h>
namespace WebCore {
class Element;
namespace Style {
class BuilderState;
enum class AnchorPositionResolutionStage : uint8_t {
Initial,
FinishedCollectingAnchorNames,
FoundAnchors,
Resolved,
};
struct AnchorPositionedState {
WTF_MAKE_FAST_ALLOCATED;
public:
HashMap<String, WeakRef<Element, WeakPtrImplWithEventTargetData>> anchorElements;
HashSet<String> anchorNames;
AnchorPositionResolutionStage stage;
};
using AnchorsForAnchorName = HashMap<String, Vector<WeakRef<Element, WeakPtrImplWithEventTargetData>>>;
using AnchorPositionedStates = WeakHashMap<Element, std::unique_ptr<AnchorPositionedState>, WeakPtrImplWithEventTargetData>;
class AnchorPositionEvaluator {
public:
static Length resolveAnchorValue(const BuilderState&, const CSSAnchorValue&);
static void findAnchorsForAnchorPositionedElement(Ref<const Element> anchorPositionedElement);
};
} // namespace Style
} // namespace WebCore
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