tdesktop/Telegram/SourceFiles/info/media/info_media_buttons.h

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once

#include <rpl/mappers.h>
#include <rpl/map.h>
#include "lang/lang_keys.h"
#include "storage/storage_shared_media.h"
#include "info/info_memento.h"
#include "info/info_controller.h"
#include "info/profile/info_profile_button.h"
#include "info/profile/info_profile_values.h"
#include "ui/wrap/slide_wrap.h"
#include "ui/wrap/vertical_layout.h"
#include "window/window_controller.h"
#include "styles/style_info.h"

namespace Info {
namespace Media {

using Type = Storage::SharedMediaType;

inline auto MediaTextPhrase(Type type) {
	switch (type) {
	case Type::Photo: return lng_profile_photos;
	case Type::Video: return lng_profile_videos;
	case Type::File: return lng_profile_files;
	case Type::MusicFile: return lng_profile_songs;
	case Type::Link: return lng_profile_shared_links;
	case Type::VoiceFile: return lng_profile_audios;
//	case Type::RoundFile: return lng_profile_rounds;
	}
	Unexpected("Type in MediaTextPhrase()");
};

inline auto MediaText(Type type) {
	return [phrase = MediaTextPhrase(type)](int count) {
		return phrase(lt_count, count);
	};
}

template <typename Count, typename Text>
inline auto AddCountedButton(
		Ui::VerticalLayout *parent,
		Count &&count,
		Text &&textFromCount,
		Ui::MultiSlideTracker &tracker) {
	using namespace rpl::mappers;

	using Button = Profile::Button;
	auto forked = std::move(count)
		| start_spawning(parent->lifetime());
	auto text = rpl::duplicate(forked)
				| rpl::map([textFromCount](int count) {
					return (count > 0)
						? textFromCount(count)
						: QString();
				});
	auto button = parent->add(object_ptr<Ui::SlideWrap<Button>>(
		parent,
		object_ptr<Button>(
			parent,
			std::move(text),
			st::infoSharedMediaButton))
	)->toggleOn(
		rpl::duplicate(forked)
		| rpl::map($1 > 0));
	tracker.track(button);
	return button;
};

inline auto AddButton(
		Ui::VerticalLayout *parent,
		not_null<Window::Controller*> controller,
		not_null<PeerData*> peer,
		PeerData *migrated,
		Type type,
		Ui::MultiSlideTracker &tracker) {
	auto result = AddCountedButton(
		parent,
		Profile::SharedMediaCountValue(peer, migrated, type),
		MediaText(type),
		tracker)->entity();
	result->addClickHandler([controller, peer, type] {
		controller->showSection(
			Info::Memento(peer->id, Section(type)));
	});
	return std::move(result);
};

inline auto AddCommonGroupsButton(
		Ui::VerticalLayout *parent,
		not_null<Window::Controller*> controller,
		not_null<UserData*> user,
		Ui::MultiSlideTracker &tracker) {
	auto result = AddCountedButton(
		parent,
		Profile::CommonGroupsCountValue(user),
		[](int count) {
			return lng_profile_common_groups(lt_count, count);
		},
		tracker)->entity();
	result->addClickHandler([controller, user] {
		controller->showSection(
			Info::Memento(user->id, Section::Type::CommonGroups));
	});
	return std::move(result);
};

} // namespace Media
} // namespace Info