Source/WebCore/page/DOMSelection.h

/*
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 * Copyright (C) 2012 Google Inc. All rights reserved.
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#pragma once

#include "GetComposedRangesOptions.h"
#include "LocalDOMWindowProperty.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Variant.h>

namespace WebCore {

class Node;
class Position;
class Range;
class StaticRange;
class VisibleSelection;

struct SimpleRange;

template<typename> class ExceptionOr;

class DOMSelection : public RefCounted<DOMSelection>, public LocalDOMWindowProperty {
public:
    static Ref<DOMSelection> create(LocalDOMWindow&);

    String type() const;
    String direction() const;
    ExceptionOr<void> setBaseAndExtent(Node& anchorNode, unsigned anchorOffset, Node& focusNode, unsigned focusOffset);
    ExceptionOr<void> setPosition(Node*, unsigned offset);
    void modify(const String& alter, const String& direction, const String& granularity);

    // The anchor and focus are the start and end of the selection, and
    // reflect the direction in which the selection was made by the user.
    RefPtr<Node> anchorNode() const;
    unsigned anchorOffset() const;
    RefPtr<Node> focusNode() const;
    unsigned focusOffset() const;
    bool isCollapsed() const;
    unsigned rangeCount() const;
    ExceptionOr<void> collapse(Node*, unsigned offset);
    ExceptionOr<void> collapseToEnd();
    ExceptionOr<void> collapseToStart();
    ExceptionOr<void> extend(Node&, unsigned offset);
    ExceptionOr<Ref<Range>> getRangeAt(unsigned);
    void removeAllRanges();
    void addRange(Range&);
    ExceptionOr<void> removeRange(Range&);

    Vector<Ref<StaticRange>> getComposedRanges(std::optional<Variant<RefPtr<ShadowRoot>, GetComposedRangesOptions>>&& options = std::nullopt, FixedVector<std::reference_wrapper<ShadowRoot>>&& = { });

    void deleteFromDocument();
    bool containsNode(Node&, bool partlyContained) const;
    ExceptionOr<void> selectAllChildren(Node&);

    String toString() const;

    void empty();

private:
    explicit DOMSelection(LocalDOMWindow&);

    // FIXME: Change LocalDOMWindowProperty::frame to return RefPtr and then delete this.
    RefPtr<LocalFrame> frame() const;
    std::optional<SimpleRange> range() const;

    Position anchorPosition() const;
    Position focusPosition() const;

    RefPtr<Node> shadowAdjustedNode(const Position&) const;
    unsigned shadowAdjustedOffset(const Position&) const;
};

} // namespace WebCore