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c58570ebaf
Having TextRange which is empty doesn't make any sense. So it confuses the functions that rely on having valid range, and causes them to do no action. Fixes #5341
107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/LogStream.h>
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#include <LibGUI/TextPosition.h>
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namespace GUI {
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class TextRange {
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public:
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TextRange() { }
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TextRange(const TextPosition& start, const TextPosition& end)
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: m_start(start)
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, m_end(end)
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{
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}
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bool is_valid() const { return m_start.is_valid() && m_end.is_valid() && m_start != m_end; }
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void clear()
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{
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m_start = {};
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m_end = {};
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}
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TextPosition& start() { return m_start; }
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TextPosition& end() { return m_end; }
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const TextPosition& start() const { return m_start; }
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const TextPosition& end() const { return m_end; }
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TextRange normalized() const { return TextRange(normalized_start(), normalized_end()); }
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void set_start(const TextPosition& position) { m_start = position; }
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void set_end(const TextPosition& position) { m_end = position; }
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void set(const TextPosition& start, const TextPosition& end)
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{
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m_start = start;
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m_end = end;
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}
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bool operator==(const TextRange& other) const
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{
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return m_start == other.m_start && m_end == other.m_end;
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}
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bool contains(const TextPosition& position) const
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{
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if (!(position.line() > m_start.line() || (position.line() == m_start.line() && position.column() >= m_start.column())))
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return false;
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if (!(position.line() < m_end.line() || (position.line() == m_end.line() && position.column() <= m_end.column())))
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return false;
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return true;
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}
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private:
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TextPosition normalized_start() const { return m_start < m_end ? m_start : m_end; }
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TextPosition normalized_end() const { return m_start < m_end ? m_end : m_start; }
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TextPosition m_start;
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TextPosition m_end;
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};
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inline const LogStream& operator<<(const LogStream& stream, const TextRange& value)
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{
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if (!value.is_valid())
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return stream << "GUI::TextRange(Invalid)";
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return stream << value.start() << '-' << value.end();
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}
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}
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template<>
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struct AK::Formatter<GUI::TextRange> : AK::Formatter<FormatString> {
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void format(FormatBuilder& builder, const GUI::TextRange& value)
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{
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if (value.is_valid())
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return Formatter<FormatString>::format(builder, "{}-{}", value.start(), value.end());
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else
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return Formatter<FormatString>::format(builder, "GUI::TextRange(Invalid)");
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}
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};
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