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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 "Document.h"
#include "ElementIdentifier.h"
#include "ElementTargetingTypes.h"
#include "EventTarget.h"
#include "IntRectHash.h"
#include "Region.h"
#include "ScriptExecutionContextIdentifier.h"
#include "Timer.h"
#include <wtf/ApproximateTime.h>
#include <wtf/CheckedPtr.h>
#include <wtf/Ref.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/WeakHashSet.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class Element;
class Document;
class Image;
class Node;
class Page;
class ElementTargetingController final : public CanMakeCheckedPtr<ElementTargetingController> {
WTF_MAKE_TZONE_ALLOCATED(ElementTargetingController);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(ElementTargetingController);
public:
ElementTargetingController(Page&);
WEBCORE_EXPORT Vector<TargetedElementInfo> findTargets(TargetedElementRequest&&);
WEBCORE_EXPORT Vector<Vector<TargetedElementInfo>> findAllTargets(float);
WEBCORE_EXPORT bool adjustVisibility(Vector<TargetedElementAdjustment>&&);
void adjustVisibilityInRepeatedlyTargetedRegions(Document&);
void reset();
void didChangeMainDocument(Document* newDocument);
WEBCORE_EXPORT uint64_t numberOfVisibilityAdjustmentRects();
WEBCORE_EXPORT bool resetVisibilityAdjustments(const Vector<TargetedElementIdentifiers>&);
WEBCORE_EXPORT RefPtr<Image> snapshotIgnoringVisibilityAdjustment(ElementIdentifier, ScriptExecutionContextIdentifier);
private:
void cleanUpAdjustmentClientRects();
void applyVisibilityAdjustmentFromSelectors();
struct FindElementFromSelectorsResult {
RefPtr<Element> element;
String lastSelectorIncludingPseudo;
};
FindElementFromSelectorsResult findElementFromSelectors(const TargetedElementSelectors&);
RefPtr<Document> mainDocument() const;
void dispatchVisibilityAdjustmentStateDidChange();
void selectorBasedVisibilityAdjustmentTimerFired();
std::pair<Vector<Ref<Node>>, RefPtr<Element>> findNodes(FloatPoint location, bool shouldIgnorePointerEventsNone);
std::pair<Vector<Ref<Node>>, RefPtr<Element>> findNodes(const String& searchText);
std::pair<Vector<Ref<Node>>, RefPtr<Element>> findNodes(const TargetedElementSelectors&);
enum class IncludeNearbyElements : bool { No, Yes };
enum class CheckViewportAreaRatio : bool { No, Yes };
Vector<TargetedElementInfo> extractTargets(Vector<Ref<Node>>&&, RefPtr<Element>&& innerElement, CheckViewportAreaRatio, IncludeNearbyElements);
void recomputeAdjustedElementsIfNeeded();
void topologicallySortElementsHelper(ElementIdentifier currentElementID, Vector<ElementIdentifier>& depthSortedIDs, UncheckedKeyHashSet<ElementIdentifier>& processingIDs, UncheckedKeyHashSet<ElementIdentifier>& unprocessedIDs, const UncheckedKeyHashMap<ElementIdentifier, UncheckedKeyHashSet<ElementIdentifier>>& elementIDToOccludedElementIDs);
Vector<ElementIdentifier> topologicallySortElements(const UncheckedKeyHashMap<ElementIdentifier, UncheckedKeyHashSet<ElementIdentifier>>& elementIDToOccludedElementIDs);
WeakPtr<Page> m_page;
DeferrableOneShotTimer m_recentAdjustmentClientRectsCleanUpTimer;
WeakHashSet<Document, WeakPtrImplWithEventTargetData> m_documentsAffectedByVisibilityAdjustment;
UncheckedKeyHashMap<ElementIdentifier, IntRect> m_recentAdjustmentClientRects;
ApproximateTime m_startTimeForSelectorBasedVisibilityAdjustment;
Timer m_selectorBasedVisibilityAdjustmentTimer;
Vector<std::pair<Markable<ElementIdentifier>, TargetedElementSelectors>> m_visibilityAdjustmentSelectors;
Vector<TargetedElementSelectors> m_initialVisibilityAdjustmentSelectors;
Region m_adjustmentClientRegion;
Region m_repeatedAdjustmentClientRegion;
WeakHashSet<Element, WeakPtrImplWithEventTargetData> m_adjustedElements;
FloatSize m_viewportSizeForVisibilityAdjustment;
unsigned m_additionalAdjustmentCount { 0 };
bool m_didCollectInitialAdjustments { false };
bool m_shouldRecomputeAdjustedElements { false };
};
} // namespace WebCore
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