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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <LibWeb/DOM/Node.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
class Position {
public:
Position() { }
Position(Node&, unsigned offset);
bool is_valid() const { return m_node; }
Node* node() { return m_node; }
const Node* node() const { return m_node; }
unsigned offset() const { return m_offset; }
bool offset_is_at_end_of_node() const;
void set_offset(unsigned value) { m_offset = value; }
bool increment_offset();
bool decrement_offset();
bool operator==(const Position& other) const
{
return m_node == other.m_node && m_offset == other.m_offset;
}
bool operator!=(const Position& other) const
{
return !(*this == other);
}
String to_string() const;
private:
RefPtr<Node> m_node;
unsigned m_offset { 0 };
};
}
namespace AK {
template<>
struct Formatter<Web::DOM::Position> : Formatter<StringView> {
ErrorOr<void> format(FormatBuilder& builder, Web::DOM::Position const& value)
{
return Formatter<StringView>::format(builder, value.to_string());
}
};
}
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