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// This file Copyright © Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#pragma once
#include "GtkCompat.h"
#if GTKMM_CHECK_VERSION(4, 0, 0)
#include <gtkmm/sorter.h>
#else
#include <glibmm/object.h>
#endif
template<typename T>
class SorterBase : public IF_GTKMM4(Gtk::Sorter, Glib::Object)
{
#if !GTKMM_CHECK_VERSION(4, 0, 0)
public:
// clang-format off
enum class Change : uint8_t
{
DIFFERENT,
INVERTED,
LESS_STRICT,
MORE_STRICT,
};
// clang-format on
#endif
public:
SorterBase() = default;
SorterBase(SorterBase&&) = delete;
SorterBase(SorterBase const&) = delete;
SorterBase& operator=(SorterBase&&) = delete;
SorterBase& operator=(SorterBase const&) = delete;
~SorterBase() override = default;
virtual int compare(T const& lhs, T const& rhs) const = 0;
#if !GTKMM_CHECK_VERSION(4, 0, 0)
sigc::signal<void(Change)>& signal_changed();
#endif
protected:
#if GTKMM_CHECK_VERSION(4, 0, 0)
// Gtk::Sorter
Gtk::Ordering compare_vfunc(gpointer lhs, gpointer rhs) override;
Order get_order_vfunc() override;
#else
void changed(Change change);
#endif
private:
#if !GTKMM_CHECK_VERSION(4, 0, 0)
sigc::signal<void(Change)> signal_changed_;
#endif
};
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