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05dd9e5bfb
This patch adds SortingProxyModel::less_than(ModelIndex, ModelIndex) which is now used to implement the sort order. This allows you to subclass SortingProxyModel if you want to tweak how sorting works. Get rid of the awkward case sensitivity logic in SortingProxyModel since that can now be done outside. Turns out nobody was actually using it anyway, but it seems like something we will want to do in the future someday.
77 lines
3.1 KiB
C++
77 lines
3.1 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 <LibGUI/Model.h>
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namespace GUI {
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class SortingProxyModel
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: public Model
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, private ModelClient {
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public:
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static NonnullRefPtr<SortingProxyModel> create(NonnullRefPtr<Model> source) { return adopt(*new SortingProxyModel(move(source))); }
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virtual ~SortingProxyModel() override;
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virtual int row_count(const ModelIndex& = ModelIndex()) const override;
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virtual int column_count(const ModelIndex& = ModelIndex()) const override;
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virtual String column_name(int) const override;
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virtual Variant data(const ModelIndex&, Role = Role::Display) const override;
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virtual void update() override;
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virtual StringView drag_data_type() const override;
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virtual int key_column() const override { return m_key_column; }
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virtual SortOrder sort_order() const override { return m_sort_order; }
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virtual void set_key_column_and_sort_order(int, SortOrder) override;
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virtual bool is_column_sortable(int column_index) const override;
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virtual bool less_than(const ModelIndex&, const ModelIndex&) const;
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ModelIndex map_to_source(const ModelIndex&) const;
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Role sort_role() const { return m_sort_role; }
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void set_sort_role(Role role) { m_sort_role = role; }
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private:
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explicit SortingProxyModel(NonnullRefPtr<Model> source);
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// ^ModelClient
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virtual void model_did_update(unsigned) override;
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Model& source() { return *m_source; }
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const Model& source() const { return *m_source; }
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void resort(unsigned flags = Model::UpdateFlag::DontInvalidateIndexes);
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NonnullRefPtr<Model> m_source;
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Vector<int> m_row_mappings;
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int m_key_column { -1 };
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SortOrder m_sort_order { SortOrder::Ascending };
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Role m_sort_role { Role::Sort };
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};
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}
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