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/*
* Copyright (C) 2019 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 "Position.h"
#include "QualifiedName.h"
#include "TextManipulationControllerExclusionRule.h"
#include "TextManipulationControllerManipulationFailure.h"
#include "TextManipulationItem.h"
#include <wtf/CheckedRef.h>
#include <wtf/CompletionHandler.h>
#include <wtf/Markable.h>
#include <wtf/ObjectIdentifier.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakHashSet.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class Document;
class Element;
class VisiblePosition;
using NodeSet = UncheckedKeyHashSet<Ref<Node>>;
class TextManipulationController final : public CanMakeWeakPtr<TextManipulationController>, public CanMakeCheckedPtr<TextManipulationController> {
WTF_MAKE_TZONE_ALLOCATED(TextManipulationController);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(TextManipulationController);
public:
TextManipulationController(Document&);
using ManipulationFailure = TextManipulationControllerManipulationFailure;
using ExclusionRule = TextManipulationControllerExclusionRule;
using ManipulationItemCallback = Function<void(Document&, const Vector<TextManipulationItem>&)>;
WEBCORE_EXPORT void startObservingParagraphs(ManipulationItemCallback&&, Vector<ExclusionRule>&& = { });
void didUpdateContentForNode(Node&);
void didAddOrCreateRendererForNode(Node&);
void removeNode(Node&);
WEBCORE_EXPORT Vector<ManipulationFailure> completeManipulation(const Vector<TextManipulationItem>&);
private:
void observeParagraphs(const Position& start, const Position& end);
void scheduleObservationUpdate();
struct ManipulationItemData {
Position start;
Position end;
WeakPtr<Element, WeakPtrImplWithEventTargetData> element;
QualifiedName attributeName { nullQName() };
Vector<TextManipulationToken> tokens;
};
struct ManipulationUnit {
Ref<Node> node;
Vector<TextManipulationToken> tokens;
bool areAllTokensExcluded { true };
bool firstTokenContainsDelimiter { false };
bool lastTokenContainsDelimiter { false };
};
ManipulationUnit createUnit(const Vector<String>&, Node&);
void parse(ManipulationUnit&, const String&, Node&);
bool shouldExcludeNodeBasedOnStyle(const Node&);
void addItem(ManipulationItemData&&);
void addItemIfPossible(Vector<ManipulationUnit>&&);
void flushPendingItemsForCallback();
enum class IsNodeManipulated : bool { No, Yes };
struct NodeInsertion {
RefPtr<Node> parentIfDifferentFromCommonAncestor;
Ref<Node> child;
IsNodeManipulated isChildManipulated { IsNodeManipulated::Yes };
};
using NodeEntry = std::pair<Ref<Node>, Ref<Node>>;
Vector<Ref<Node>> getPath(Node*, Node*);
void updateInsertions(Vector<NodeEntry>&, const Vector<Ref<Node>>&, Node*, NodeSet&, Vector<NodeInsertion>&);
std::optional<ManipulationFailure::Type> replace(const ManipulationItemData&, const Vector<TextManipulationToken>&, NodeSet& containersWithoutVisualOverflowBeforeReplacement);
WeakPtr<Document, WeakPtrImplWithEventTargetData> m_document;
WeakHashSet<Node, WeakPtrImplWithEventTargetData> m_manipulatedNodes;
WeakHashSet<Node, WeakPtrImplWithEventTargetData> m_manipulatedNodesWithNewContent;
WeakHashSet<Node, WeakPtrImplWithEventTargetData> m_addedOrNewlyRenderedNodes;
UncheckedKeyHashMap<String, bool> m_cachedFontFamilyExclusionResults;
bool m_didScheduleObservationUpdate { false };
ManipulationItemCallback m_callback;
Vector<TextManipulationItem> m_pendingItemsForCallback;
Vector<ExclusionRule> m_exclusionRules;
UncheckedKeyHashMap<TextManipulationItemIdentifier, ManipulationItemData> m_items;
};
} // namespace WebCore
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