tdesktop/Telegram/SourceFiles/boxes/self_destruction_box.cpp

/*
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
*/
#include "boxes/self_destruction_box.h"

#include "lang/lang_keys.h"
#include "ui/widgets/checkbox.h"
#include "ui/widgets/labels.h"
#include "styles/style_boxes.h"

void SelfDestructionBox::prepare() {
	setTitle(langFactory(lng_self_destruct_title));

	_ttlValues = { 30, 90, 180, 365 };

	auto fake = object_ptr<Ui::FlatLabel>(this, lang(lng_self_destruct_description), Ui::FlatLabel::InitType::Simple, st::boxLabel);
	auto boxHeight = st::boxOptionListPadding.top()
		+ fake->height() + st::boxMediumSkip
		+ _ttlValues.size() * (st::langsButton.height + st::boxOptionListSkip) - st::boxOptionListSkip
		+ st::boxOptionListPadding.bottom() + st::boxPadding.bottom();
	fake.destroy();

	setDimensions(st::boxWidth, boxHeight);

	auto loading = object_ptr<Ui::FlatLabel>(this, lang(lng_contacts_loading), Ui::FlatLabel::InitType::Simple, st::membersAbout);
	loading->moveToLeft((st::boxWidth - loading->width()) / 2, boxHeight / 3);

	addButton(langFactory(lng_cancel), [this] { closeBox(); });

	request(MTPaccount_GetAccountTTL()).done([this, loading = std::move(loading)](const MTPAccountDaysTTL &result) mutable {
		Expects(result.type() == mtpc_accountDaysTTL);
		Expects(!_ttlValues.empty());

		loading.destroy();
		auto y = st::boxOptionListPadding.top();
		_description.create(this, lang(lng_self_destruct_description), Ui::FlatLabel::InitType::Simple, st::boxLabel);
		_description->moveToLeft(st::boxPadding.left(), y);
		y += _description->height() + st::boxMediumSkip;

		auto current = result.c_accountDaysTTL().vdays.v;
		auto currentAdjusted = _ttlValues[0];
		for (auto days : _ttlValues) {
			if (qAbs(current - days) < qAbs(current - currentAdjusted)) {
				currentAdjusted = days;
			}
		}
		auto group = std::make_shared<Ui::RadiobuttonGroup>(currentAdjusted);
		auto count = int(_ttlValues.size());
		_options.reserve(count);
		for (auto days : _ttlValues) {
			_options.emplace_back(this, group, days, (days > 364) ? lng_self_destruct_years(lt_count, days / 365) : lng_self_destruct_months(lt_count, qMax(days / 30, 1)), st::langsButton);
			_options.back()->moveToLeft(st::boxPadding.left(), y);
			y += _options.back()->heightNoMargins() + st::boxOptionListSkip;
		}
		showChildren();

		clearButtons();
		addButton(langFactory(lng_settings_save), [this, group] {
			MTP::send(MTPaccount_SetAccountTTL(MTP_accountDaysTTL(MTP_int(group->value()))));
			closeBox();
		});
		addButton(langFactory(lng_cancel), [this] { closeBox(); });
	}).send();
}