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100 lines
3.2 KiB
C++
100 lines
3.2 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/Format.h>
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#include <AK/Traits.h>
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#include <LibGUI/Forward.h>
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#include <LibGUI/ModelRole.h>
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namespace GUI {
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class ModelIndex {
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friend class Model;
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public:
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ModelIndex() { }
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bool is_valid() const { return m_model && m_row != -1 && m_column != -1; }
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int row() const { return m_row; }
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int column() const { return m_column; }
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void* internal_data() const { return m_internal_data; }
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ModelIndex parent() const;
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bool operator==(const ModelIndex& other) const
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{
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return m_model == other.m_model && m_row == other.m_row && m_column == other.m_column && m_internal_data == other.m_internal_data;
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}
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bool operator!=(const ModelIndex& other) const
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{
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return !(*this == other);
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}
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const Model* model() const { return m_model; }
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Variant data(ModelRole = ModelRole::Display) const;
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private:
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ModelIndex(const Model& model, int row, int column, void* internal_data)
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: m_model(&model)
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, m_row(row)
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, m_column(column)
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, m_internal_data(internal_data)
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{
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}
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const Model* m_model { nullptr };
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int m_row { -1 };
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int m_column { -1 };
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void* m_internal_data { nullptr };
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};
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}
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namespace AK {
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template<>
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struct Formatter<GUI::ModelIndex> : Formatter<FormatString> {
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void format(FormatBuilder& builder, const GUI::ModelIndex& value)
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{
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if (value.internal_data())
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return Formatter<FormatString>::format(builder, "ModelIndex({},{},{})", value.row(), value.column(), value.internal_data());
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else
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return Formatter<FormatString>::format(builder, "ModelIndex({},{})", value.row(), value.column());
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}
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};
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template<>
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struct Traits<GUI::ModelIndex> : public GenericTraits<GUI::ModelIndex> {
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static unsigned hash(const GUI::ModelIndex& index) { return pair_int_hash(index.row(), index.column()); }
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};
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}
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