transmission/gtk/FilterBase.h

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// This file Copyright © 2022-2023 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"
#include <libtransmission/tr-macros.h>
#if GTKMM_CHECK_VERSION(4, 0, 0)
#include <gtkmm/filter.h>
#else
#include <glibmm/object.h>
#endif
template<typename T>
class FilterBase : public IF_GTKMM4(Gtk::Filter, Glib::Object)
{
public:
#if !GTKMM_CHECK_VERSION(4, 0, 0)
enum class Change{
DIFFERENT,
LESS_STRICT,
MORE_STRICT,
};
#endif
public:
FilterBase() = default;
~FilterBase() override = default;
TR_DISABLE_COPY_MOVE(FilterBase)
virtual bool match(T const& item) const = 0;
virtual bool matches_all() const;
virtual bool matches_none() const;
#if !GTKMM_CHECK_VERSION(4, 0, 0)
sigc::signal<void(Change)>& signal_changed();
#endif
protected:
#if GTKMM_CHECK_VERSION(4, 0, 0)
// Gtk::Filter
bool match_vfunc(Glib::RefPtr<Glib::ObjectBase> const& object) override;
Match get_strictness_vfunc() override;
#else
void changed(Change change);
#endif
private:
#if !GTKMM_CHECK_VERSION(4, 0, 0)
sigc::signal<void(Change)> signal_changed_;
#endif
};