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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGUI/TextPosition.h>
namespace GUI {
class TextRange {
public:
TextRange() { }
TextRange(const TextPosition& start, const TextPosition& end)
: m_start(start)
, m_end(end)
{
}
bool is_valid() const { return m_start.is_valid() && m_end.is_valid() && m_start != m_end; }
void clear()
{
m_start = {};
m_end = {};
}
TextPosition& start() { return m_start; }
TextPosition& end() { return m_end; }
const TextPosition& start() const { return m_start; }
const TextPosition& end() const { return m_end; }
TextRange normalized() const { return TextRange(normalized_start(), normalized_end()); }
void set_start(const TextPosition& position) { m_start = position; }
void set_end(const TextPosition& position) { m_end = position; }
void set(const TextPosition& start, const TextPosition& end)
{
m_start = start;
m_end = end;
}
bool operator==(const TextRange& other) const
{
return m_start == other.m_start && m_end == other.m_end;
}
bool contains(const TextPosition& position) const
{
if (!(position.line() > m_start.line() || (position.line() == m_start.line() && position.column() >= m_start.column())))
return false;
if (!(position.line() < m_end.line() || (position.line() == m_end.line() && position.column() <= m_end.column())))
return false;
return true;
}
private:
TextPosition normalized_start() const { return m_start < m_end ? m_start : m_end; }
TextPosition normalized_end() const { return m_start < m_end ? m_end : m_start; }
TextPosition m_start;
TextPosition m_end;
};
}
template<>
struct AK::Formatter<GUI::TextRange> : AK::Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, GUI::TextRange const& value)
{
if (value.is_valid())
return Formatter<FormatString>::format(builder, "{}-{}", value.start(), value.end());
return Formatter<FormatString>::format(builder, "GUI::TextRange(Invalid)");
}
};
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