From 37b018257e25a8ed0510954ec117929ec94f7580 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Mon, 18 Dec 2017 14:38:14 +0400
Subject: [PATCH] Replace some std::shared_ptr with std::unique_ptr.

---
 .../SourceFiles/chat_helpers/bot_keyboard.cpp |  18 +-
 .../chat_helpers/stickers_list_widget.cpp     |  60 ++--
 .../chat_helpers/stickers_list_widget.h       |  34 ++-
 .../SourceFiles/core/click_handler_types.h    |   1 -
 Telegram/SourceFiles/history/history_item.cpp | 113 +++++---
 Telegram/SourceFiles/history/history_item.h   |  39 ++-
 .../SourceFiles/history/history_widget.cpp    |  12 +-
 Telegram/SourceFiles/logs.cpp                 |   4 +-
 .../SourceFiles/overview/overview_layout.h    |   2 +-
 Telegram/SourceFiles/storage/file_upload.cpp  | 262 ++++++++++++------
 Telegram/SourceFiles/storage/file_upload.h    |  16 +-
 .../SourceFiles/storage/localimageloader.cpp  |  64 +++--
 .../SourceFiles/storage/localimageloader.h    |  10 +-
 Telegram/SourceFiles/storage/localstorage.cpp |  19 +-
 .../ui/widgets/discrete_sliders.cpp           |  11 +-
 .../SourceFiles/ui/widgets/discrete_sliders.h |   4 +-
 16 files changed, 421 insertions(+), 248 deletions(-)

diff --git a/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp b/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp
index e933ba2b3..c5a468f8a 100644
--- a/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp
+++ b/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp
@@ -108,16 +108,18 @@ void BotKeyboard::leaveEventHook(QEvent *e) {
 }
 
 bool BotKeyboard::moderateKeyActivate(int key) {
-	if (auto item = App::histItemById(_wasForMsgId)) {
-		if (auto markup = item->Get<HistoryMessageReplyMarkup>()) {
+	if (const auto item = App::histItemById(_wasForMsgId)) {
+		if (const auto markup = item->Get<HistoryMessageReplyMarkup>()) {
 			if (key >= Qt::Key_1 && key <= Qt::Key_9) {
-				int index = (key - Qt::Key_1);
-				if (!markup->rows.isEmpty() && index >= 0 && index < markup->rows.front().size()) {
+				const auto index = int(key - Qt::Key_1);
+				if (!markup->rows.empty()
+					&& index >= 0
+					&& index < int(markup->rows.front().size())) {
 					App::activateBotCommand(item, 0, index);
 					return true;
 				}
 			} else if (key == Qt::Key_Q) {
-				if (auto user = item->history()->peer->asUser()) {
+				if (const auto user = item->history()->peer->asUser()) {
 					if (user->botInfo && item->from() == user) {
 						App::sendBotCommand(user, user, qsl("/translate"));
 						return true;
@@ -163,8 +165,10 @@ bool BotKeyboard::updateMarkup(HistoryItem *to, bool force) {
 
 	_impl = nullptr;
 	if (auto markup = to->Get<HistoryMessageReplyMarkup>()) {
-		if (!markup->rows.isEmpty()) {
-			_impl.reset(new ReplyKeyboard(to, std::make_unique<Style>(this, *_st)));
+		if (!markup->rows.empty()) {
+			_impl = std::make_unique<ReplyKeyboard>(
+				to,
+				std::make_unique<Style>(this, *_st));
 		}
 	}
 
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
index ec9d10a87..eb526b88b 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@@ -113,6 +113,23 @@ private:
 
 };
 
+StickersListWidget::Set::Set(
+	uint64 id,
+	MTPDstickerSet::Flags flags,
+	const QString &title,
+	int hoversSize,
+	const Stickers::Pack &pack)
+: id(id)
+, flags(flags)
+, title(title)
+, pack(pack) {
+}
+
+StickersListWidget::Set::Set(Set &&other) = default;
+StickersListWidget::Set &StickersListWidget::Set::operator=(
+	Set &&other) = default;
+StickersListWidget::Set::~Set() = default;
+
 StickersListWidget::Footer::Footer(not_null<StickersListWidget*> parent) : InnerFooter(parent)
 , _pan(parent)
 , _a_icons(animation(this, &Footer::step_icons)) {
@@ -605,10 +622,12 @@ int StickersListWidget::countDesiredHeight(int newWidth) {
 	auto minimalLastHeight = (visibleHeight - st::stickerPanPadding);
 	auto countResult = [this, minimalLastHeight] {
 		if (_section == Section::Featured) {
-			return st::stickerPanPadding + shownSets().size() * featuredRowHeight();
+			return st::stickerPanPadding
+				+ int(shownSets().size()) * featuredRowHeight();
 		} else if (!shownSets().empty()) {
-			auto info = sectionInfo(shownSets().size() - 1);
-			return info.top + qMax(info.rowsBottom - info.top, minimalLastHeight);
+			const auto info = sectionInfo(shownSets().size() - 1);
+			return info.top
+				+ qMax(info.rowsBottom - info.top, minimalLastHeight);
 		}
 		return 0;
 	};
@@ -679,7 +698,7 @@ void StickersListWidget::paintFeaturedStickers(Painter &p, QRect clip) {
 
 	auto tilly = st::stickerPanPadding;
 	auto ms = getms();
-	for (auto c = 0, l = sets.size(); c != l; ++c) {
+	for (auto c = 0, l = int(sets.size()); c != l; ++c) {
 		auto y = tilly;
 		auto &set = sets[c];
 		tilly = y + featuredRowHeight();
@@ -1005,18 +1024,18 @@ QRect StickersListWidget::megagroupSetButtonRectFinal() const {
 	return result;
 }
 
-std::shared_ptr<Ui::RippleAnimation> StickersListWidget::createButtonRipple(int section) {
+std::unique_ptr<Ui::RippleAnimation> StickersListWidget::createButtonRipple(int section) {
 	if (_section == Section::Featured) {
 		auto maskSize = QSize(_addWidth - st::stickersTrendingAdd.width, st::stickersTrendingAdd.height);
 		auto mask = Ui::RippleAnimation::roundRectMask(maskSize, st::buttonRadius);
-		return std::make_shared<Ui::RippleAnimation>(
+		return std::make_unique<Ui::RippleAnimation>(
 			st::stickersTrendingAdd.ripple,
 			std::move(mask),
 			[this, section] { rtlupdate(featuredAddRect(section)); });
 	}
 	auto maskSize = QSize(st::stickerPanRemoveSet.rippleAreaSize, st::stickerPanRemoveSet.rippleAreaSize);
 	auto mask = Ui::RippleAnimation::ellipseMask(maskSize);
-	return std::make_shared<Ui::RippleAnimation>(
+	return std::make_unique<Ui::RippleAnimation>(
 		st::stickerPanRemoveSet.ripple,
 		std::move(mask),
 		[this, section] { rtlupdate(removeButtonRect(section)); });
@@ -1085,7 +1104,9 @@ void StickersListWidget::mouseReleaseEvent(QMouseEvent *e) {
 }
 
 void StickersListWidget::removeRecentSticker(int section, int index) {
-	if (_section != Section::Stickers || section >= _mySets.size() || _mySets[section].id != Stickers::RecentSetId) {
+	if ((_section != Section::Stickers)
+		|| (section >= int(_mySets.size()))
+		|| (_mySets[section].id != Stickers::RecentSetId)) {
 		return;
 	}
 
@@ -1124,7 +1145,9 @@ void StickersListWidget::removeRecentSticker(int section, int index) {
 }
 
 void StickersListWidget::removeFavedSticker(int section, int index) {
-	if (_section != Section::Stickers || section >= _mySets.size() || _mySets[section].id != Stickers::FavedSetId) {
+	if ((_section != Section::Stickers)
+		|| (section >= int(_mySets.size()))
+		|| (_mySets[section].id != Stickers::FavedSetId)) {
 		return;
 	}
 
@@ -1231,8 +1254,7 @@ void StickersListWidget::refreshStickers() {
 }
 
 void StickersListWidget::refreshSettingsVisibility() {
-	auto visible = (_section == Section::Stickers)
-		&& _mySets.isEmpty();
+	const auto visible = (_section == Section::Stickers) && _mySets.empty();
 	_settings->setVisible(visible);
 }
 
@@ -1253,7 +1275,7 @@ void StickersListWidget::preloadImages() {
 		for (int j = 0; j != count; ++j) {
 			if (++k > _columnCount * (_columnCount + 1)) break;
 
-			auto sticker = sets.at(i).pack.at(j);
+			auto sticker = sets[i].pack.at(j);
 			if (!sticker || !sticker->sticker()) continue;
 
 			bool goodThumb = !sticker->thumb->isNull() && ((sticker->thumb->width() >= 128) || (sticker->thumb->height() >= 128));
@@ -1274,10 +1296,15 @@ uint64 StickersListWidget::currentSet(int yOffset) const {
 	if (_section == Section::Featured) {
 		return Stickers::FeaturedSetId;
 	}
-	return _mySets.isEmpty() ? Stickers::RecentSetId : _mySets[sectionInfoByOffset(yOffset).section].id;
+	return _mySets.empty()
+		? Stickers::RecentSetId
+		: _mySets[sectionInfoByOffset(yOffset).section].id;
 }
 
-void StickersListWidget::appendSet(Sets &to, uint64 setId, AppendSkip skip) {
+void StickersListWidget::appendSet(
+		std::vector<Set> &to,
+		uint64 setId,
+		AppendSkip skip) {
 	auto &sets = Auth().data().stickerSets();
 	auto it = sets.constFind(setId);
 	if (it == sets.cend() || it->stickers.isEmpty()) return;
@@ -1425,7 +1452,7 @@ void StickersListWidget::refreshMegagroupStickers(GroupStickersPlace place) {
 void StickersListWidget::fillIcons(QList<StickerIcon> &icons) {
 	icons.clear();
 	icons.reserve(_mySets.size() + 1);
-	if (Auth().data().featuredStickerSetsUnreadCount() && !_featuredSets.isEmpty()) {
+	if (Auth().data().featuredStickerSetsUnreadCount() && !_featuredSets.empty()) {
 		icons.push_back(StickerIcon(Stickers::FeaturedSetId));
 	}
 
@@ -1459,7 +1486,8 @@ void StickersListWidget::fillIcons(QList<StickerIcon> &icons) {
 		icons.push_back(StickerIcon(_mySets[i].id, s, pixw, pixh));
 	}
 
-	if (!Auth().data().featuredStickerSetsUnreadCount() && !_featuredSets.isEmpty()) {
+	if (!Auth().data().featuredStickerSetsUnreadCount()
+		&& !_featuredSets.empty()) {
 		icons.push_back(StickerIcon(Stickers::FeaturedSetId));
 	}
 }
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
index 1bf997642..d076638df 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
@@ -138,15 +138,22 @@ private:
 	};
 
 	struct Set {
-		Set(uint64 id, MTPDstickerSet::Flags flags, const QString &title, int32 hoversSize, const Stickers::Pack &pack = Stickers::Pack()) : id(id), flags(flags), title(title), pack(pack) {
-		}
+		Set(
+			uint64 id,
+			MTPDstickerSet::Flags flags,
+			const QString &title,
+			int hoversSize,
+			const Stickers::Pack &pack = Stickers::Pack());
+		Set(Set &&other);
+		Set &operator=(Set &&other);
+		~Set();
+
 		uint64 id;
 		MTPDstickerSet::Flags flags;
 		QString title;
 		Stickers::Pack pack;
-		std::shared_ptr<Ui::RippleAnimation> ripple;
+		std::unique_ptr<Ui::RippleAnimation> ripple;
 	};
-	using Sets = QList<Set>;
 
 	template <typename Callback>
 	bool enumerateSections(Callback callback) const;
@@ -172,7 +179,7 @@ private:
 	void updateSelected();
 	void setSelected(OverState newSelected);
 	void setPressed(OverState newPressed);
-	std::shared_ptr<Ui::RippleAnimation> createButtonRipple(int section);
+	std::unique_ptr<Ui::RippleAnimation> createButtonRipple(int section);
 	QPoint buttonRippleTopLeft(int section) const;
 
 	enum class ValidateIconAnimations {
@@ -182,10 +189,10 @@ private:
 	};
 	void validateSelectedIcon(ValidateIconAnimations animations);
 
-	Sets &shownSets() {
+	std::vector<Set> &shownSets() {
 		return (_section == Section::Featured) ? _featuredSets : _mySets;
 	}
-	const Sets &shownSets() const {
+	const std::vector<Set> &shownSets() const {
 		return (_section == Section::Featured) ? _featuredSets : _mySets;
 	}
 	int featuredRowHeight() const;
@@ -210,7 +217,10 @@ private:
 		Archived,
 		Installed,
 	};
-	void appendSet(Sets &to, uint64 setId, AppendSkip skip = AppendSkip::None);
+	void appendSet(
+		std::vector<Set> &to,
+		uint64 setId,
+		AppendSkip skip = AppendSkip::None);
 
 	void selectEmoji(EmojiPtr emoji);
 	int stickersLeft() const;
@@ -222,10 +232,10 @@ private:
 	void refreshFooterIcons();
 
 	ChannelData *_megagroupSet = nullptr;
-	Sets _mySets;
-	Sets _featuredSets;
-	OrderedSet<uint64> _installedLocallySets;
-	QList<bool> _custom;
+	std::vector<Set> _mySets;
+	std::vector<Set> _featuredSets;
+	base::flat_set<uint64> _installedLocallySets;
+	std::vector<bool> _custom;
 	base::flat_set<not_null<DocumentData*>> _favedStickersMap;
 
 	Section _section = Section::Stickers;
diff --git a/Telegram/SourceFiles/core/click_handler_types.h b/Telegram/SourceFiles/core/click_handler_types.h
index 8c7067e27..37c23d1e8 100644
--- a/Telegram/SourceFiles/core/click_handler_types.h
+++ b/Telegram/SourceFiles/core/click_handler_types.h
@@ -97,7 +97,6 @@ private:
 	QString _originalUrl, _readable;
 
 };
-using TextClickHandlerPtr = std::shared_ptr<TextClickHandler>;
 
 class HiddenUrlClickHandler : public UrlClickHandler {
 public:
diff --git a/Telegram/SourceFiles/history/history_item.cpp b/Telegram/SourceFiles/history/history_item.cpp
index 2f0e35a29..691e3606a 100644
--- a/Telegram/SourceFiles/history/history_item.cpp
+++ b/Telegram/SourceFiles/history/history_item.cpp
@@ -128,33 +128,43 @@ QString ReplyMarkupClickHandler::buttonText() const {
 	return QString();
 }
 
-ReplyKeyboard::ReplyKeyboard(const HistoryItem *item, StylePtr &&s)
-	: _item(item)
-	, _a_selected(animation(this, &ReplyKeyboard::step_selected))
-	, _st(std::move(s)) {
-	if (auto markup = item->Get<HistoryMessageReplyMarkup>()) {
+ReplyKeyboard::Button::Button() = default;
+ReplyKeyboard::Button::Button(Button &&other) = default;
+ReplyKeyboard::Button &ReplyKeyboard::Button::operator=(
+	Button &&other) = default;
+ReplyKeyboard::Button::~Button() = default;
+
+ReplyKeyboard::ReplyKeyboard(
+	not_null<const HistoryItem*> item,
+	std::unique_ptr<Style> &&s)
+: _item(item)
+, _a_selected(animation(this, &ReplyKeyboard::step_selected))
+, _st(std::move(s)) {
+	if (const auto markup = _item->Get<HistoryMessageReplyMarkup>()) {
 		_rows.reserve(markup->rows.size());
-		for (int i = 0, l = markup->rows.size(); i != l; ++i) {
+		for (auto i = 0, l = int(markup->rows.size()); i != l; ++i) {
 			auto &row = markup->rows.at(i);
 			int s = row.size();
-			ButtonRow newRow(s, Button());
+			auto newRow = std::vector<Button>();
+			newRow.reserve(s);
 			for (int j = 0; j != s; ++j) {
-				auto &button = newRow[j];
+				auto button = Button();
 				auto str = row.at(j).text;
 				button.type = row.at(j).type;
 				button.link = std::make_shared<ReplyMarkupClickHandler>(item, i, j);
 				button.text.setText(_st->textStyle(), TextUtilities::SingleLine(str), _textPlainOptions);
 				button.characters = str.isEmpty() ? 1 : str.size();
+				newRow.push_back(std::move(button));
 			}
-			_rows.push_back(newRow);
+			_rows.push_back(std::move(newRow));
 		}
 	}
 }
 
 void ReplyKeyboard::updateMessageId() {
-	auto msgId = _item->fullId();
-	for_const (auto &row, _rows) {
-		for_const (auto &button, row) {
+	const auto msgId = _item->fullId();
+	for (const auto &row : _rows) {
+		for (const auto &button : row) {
 			button.link->setMessageId(msgId);
 		}
 	}
@@ -165,7 +175,10 @@ void ReplyKeyboard::resize(int width, int height) {
 	_width = width;
 
 	auto markup = _item->Get<HistoryMessageReplyMarkup>();
-	float64 y = 0, buttonHeight = _rows.isEmpty() ? _st->buttonHeight() : (float64(height + _st->buttonSkip()) / _rows.size());
+	auto y = 0.;
+	auto buttonHeight = _rows.empty()
+		? float64(_st->buttonHeight())
+		: (float64(height + _st->buttonSkip()) / _rows.size());
 	for (auto &row : _rows) {
 		int s = row.size();
 
@@ -228,24 +241,30 @@ bool ReplyKeyboard::isEnoughSpace(int width, const style::BotKeyboardButton &st)
 	return true;
 }
 
-void ReplyKeyboard::setStyle(StylePtr &&st) {
+void ReplyKeyboard::setStyle(std::unique_ptr<Style> &&st) {
 	_st = std::move(st);
 }
 
 int ReplyKeyboard::naturalWidth() const {
 	auto result = 0;
-	for_const (auto &row, _rows) {
+	for (const auto &row : _rows) {
 		auto maxMinButtonWidth = 0;
-		for_const (auto &button, row) {
-			accumulate_max(maxMinButtonWidth, _st->minButtonWidth(button.type));
+		for (const auto &button : row) {
+			accumulate_max(
+				maxMinButtonWidth,
+				_st->minButtonWidth(button.type));
 		}
 		auto rowMaxButtonWidth = 0;
-		for_const (auto &button, row) {
-			accumulate_max(rowMaxButtonWidth, qMax(button.text.maxWidth(), 1) + maxMinButtonWidth);
+		for (const auto &button : row) {
+			accumulate_max(
+				rowMaxButtonWidth,
+				qMax(button.text.maxWidth(), 1) + maxMinButtonWidth);
 		}
 
-		auto rowSize = row.size();
-		accumulate_max(result, rowSize * rowMaxButtonWidth + (rowSize - 1) * _st->buttonSkip());
+		const auto rowSize = int(row.size());
+		accumulate_max(
+			result,
+			rowSize * rowMaxButtonWidth + (rowSize - 1) * _st->buttonSkip());
 	}
 	return result;
 }
@@ -323,8 +342,13 @@ void ReplyKeyboard::clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pr
 		auto &button = _rows[coords.i][coords.j];
 		if (pressed) {
 			if (!button.ripple) {
-				auto mask = Ui::RippleAnimation::roundRectMask(button.rect.size(), _st->buttonRadius());
-				button.ripple = std::make_shared<Ui::RippleAnimation>(_st->_st->ripple, std::move(mask), [this] { _st->repaint(_item); });
+				auto mask = Ui::RippleAnimation::roundRectMask(
+					button.rect.size(),
+					_st->buttonRadius());
+				button.ripple = std::make_unique<Ui::RippleAnimation>(
+					_st->_st->ripple,
+					std::move(mask),
+					[this] { _st->repaint(_item); });
 			}
 			button.ripple->add(_savedCoords - button.rect.topLeft());
 		} else {
@@ -339,13 +363,13 @@ void ReplyKeyboard::clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pr
 }
 
 void ReplyKeyboard::startAnimation(int i, int j, int direction) {
-	auto notStarted = _animations.isEmpty();
+	auto notStarted = _animations.empty();
 
 	int indexForAnimation = (i * MatrixRowShift + j + 1) * direction;
 
 	_animations.remove(-indexForAnimation);
 	if (!_animations.contains(indexForAnimation)) {
-		_animations.insert(indexForAnimation, getms());
+		_animations.emplace(indexForAnimation, getms());
 	}
 
 	if (notStarted && !_a_selected.animating()) {
@@ -354,26 +378,30 @@ void ReplyKeyboard::startAnimation(int i, int j, int direction) {
 }
 
 void ReplyKeyboard::step_selected(TimeMs ms, bool timer) {
-	for (Animations::iterator i = _animations.begin(); i != _animations.end();) {
-		int index = qAbs(i.key()) - 1, row = (index / MatrixRowShift), col = index % MatrixRowShift;
-		float64 dt = float64(ms - i.value()) / st::botKbDuration;
+	for (auto i = _animations.begin(); i != _animations.end();) {
+		const auto index = std::abs(i->first) - 1;
+		const auto row = (index / MatrixRowShift);
+		const auto col = index % MatrixRowShift;
+		const auto dt = float64(ms - i->second) / st::botKbDuration;
 		if (dt >= 1) {
-			_rows[row][col].howMuchOver = (i.key() > 0) ? 1 : 0;
+			_rows[row][col].howMuchOver = (i->first > 0) ? 1 : 0;
 			i = _animations.erase(i);
 		} else {
-			_rows[row][col].howMuchOver = (i.key() > 0) ? dt : (1 - dt);
+			_rows[row][col].howMuchOver = (i->first > 0) ? dt : (1 - dt);
 			++i;
 		}
 	}
 	if (timer) _st->repaint(_item);
-	if (_animations.isEmpty()) {
+	if (_animations.empty()) {
 		_a_selected.stop();
 	}
 }
 
 void ReplyKeyboard::clearSelection() {
-	for (auto i = _animations.cbegin(), e = _animations.cend(); i != e; ++i) {
-		int index = qAbs(i.key()) - 1, row = (index / MatrixRowShift), col = index % MatrixRowShift;
+	for (const auto [relativeIndex, time] : _animations) {
+		const auto index = std::abs(relativeIndex) - 1;
+		const auto row = (index / MatrixRowShift);
+		const auto col = index % MatrixRowShift;
 		_rows[row][col].howMuchOver = 0;
 	}
 	_animations.clear();
@@ -435,7 +463,7 @@ void HistoryMessageReplyMarkup::createFromButtonRows(const QVector<MTPKeyboardBu
 			auto &r = row.c_keyboardButtonRow();
 			auto &b = r.vbuttons.v;
 			if (!b.isEmpty()) {
-				ButtonRow buttonRow;
+				auto buttonRow = std::vector<Button>();
 				buttonRow.reserve(b.size());
 				for_const (auto &button, b) {
 					switch (button.type()) {
@@ -476,7 +504,9 @@ void HistoryMessageReplyMarkup::createFromButtonRows(const QVector<MTPKeyboardBu
 					}
 					}
 				}
-				if (!buttonRow.isEmpty()) rows.push_back(buttonRow);
+				if (!buttonRow.empty()) {
+					rows.push_back(std::move(buttonRow));
+				}
 			}
 		} break;
 		}
@@ -515,18 +545,21 @@ void HistoryMessageReplyMarkup::create(const MTPReplyMarkup &markup) {
 	}
 }
 
-void HistoryMessageReplyMarkup::create(const HistoryMessageReplyMarkup &markup) {
+void HistoryMessageReplyMarkup::create(
+		const HistoryMessageReplyMarkup &markup) {
 	flags = markup.flags;
 	inlineKeyboard = nullptr;
 
 	rows.clear();
-	for_const (auto &row, markup.rows) {
-		ButtonRow buttonRow;
+	for (const auto &row : markup.rows) {
+		auto buttonRow = std::vector<Button>();
 		buttonRow.reserve(row.size());
-		for_const (auto &button, row) {
+		for (const auto &button : row) {
 			buttonRow.push_back({ button.type, button.text, button.data, 0 });
 		}
-		if (!buttonRow.isEmpty()) rows.push_back(buttonRow);
+		if (!buttonRow.empty()) {
+			rows.push_back(std::move(buttonRow));
+		}
 	}
 }
 
diff --git a/Telegram/SourceFiles/history/history_item.h b/Telegram/SourceFiles/history/history_item.h
index c1f79ace9..cd318efeb 100644
--- a/Telegram/SourceFiles/history/history_item.h
+++ b/Telegram/SourceFiles/history/history_item.h
@@ -253,10 +253,8 @@ struct HistoryMessageReplyMarkup : public RuntimeComponent<HistoryMessageReplyMa
 		QByteArray data;
 		mutable mtpRequestId requestId;
 	};
-	using ButtonRow = QVector<Button>;
-	using ButtonRows = QVector<ButtonRow>;
 
-	ButtonRows rows;
+	std::vector<std::vector<Button>> rows;
 	MTPDreplyKeyboardMarkup::Flags flags = 0;
 
 	std::unique_ptr<ReplyKeyboard> inlineKeyboard;
@@ -345,14 +343,15 @@ public:
 		friend class ReplyKeyboard;
 
 	};
-	typedef std::unique_ptr<Style> StylePtr;
 
-	ReplyKeyboard(const HistoryItem *item, StylePtr &&s);
+	ReplyKeyboard(
+		not_null<const HistoryItem*> item,
+		std::unique_ptr<Style> &&s);
 	ReplyKeyboard(const ReplyKeyboard &other) = delete;
 	ReplyKeyboard &operator=(const ReplyKeyboard &other) = delete;
 
 	bool isEnoughSpace(int width, const style::BotKeyboardButton &st) const;
-	void setStyle(StylePtr &&s);
+	void setStyle(std::unique_ptr<Style> &&s);
 	void resize(int width, int height);
 
 	// what width and height will best fit this keyboard
@@ -369,39 +368,39 @@ public:
 	void updateMessageId();
 
 private:
-	void startAnimation(int i, int j, int direction);
-
 	friend class Style;
-	using ReplyMarkupClickHandlerPtr = std::shared_ptr<ReplyMarkupClickHandler>;
 	struct Button {
+		Button();
+		Button(Button &&other);
+		Button &operator=(Button &&other);
+		~Button();
+
 		Text text = { 1 };
 		QRect rect;
 		int characters = 0;
 		float64 howMuchOver = 0.;
 		HistoryMessageReplyMarkup::Button::Type type;
-		ReplyMarkupClickHandlerPtr link;
-		mutable std::shared_ptr<Ui::RippleAnimation> ripple;
+		std::shared_ptr<ReplyMarkupClickHandler> link;
+		mutable std::unique_ptr<Ui::RippleAnimation> ripple;
 	};
-	using ButtonRow = QVector<Button>;
-	using ButtonRows = QVector<ButtonRow>;
-
 	struct ButtonCoords {
 		int i, j;
 	};
+
+	void startAnimation(int i, int j, int direction);
+
 	ButtonCoords findButtonCoordsByClickHandler(const ClickHandlerPtr &p);
 
-	using Animations = QMap<int, TimeMs>;
 	void step_selected(TimeMs ms, bool timer);
 
-	const HistoryItem *_item;
+	const not_null<const HistoryItem*> _item;
 	int _width = 0;
 
-	ButtonRows _rows;
+	std::vector<std::vector<Button>> _rows;
 
-	Animations _animations;
+	base::flat_map<int, TimeMs> _animations;
 	BasicAnimation _a_selected;
-
-	StylePtr _st;
+	std::unique_ptr<Style> _st;
 
 	ClickHandlerPtr _savedPressed;
 	ClickHandlerPtr _savedActive;
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index dfc01bd84..1a9dcb5ce 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -1294,7 +1294,7 @@ void HistoryWidget::onRecordDone(QByteArray result, VoiceWaveform waveform, qint
 	auto duration = samples / Media::Player::kDefaultFrequency;
 	auto to = FileLoadTo(_peer->id, _peer->notifySilentPosts(), replyToId());
 	auto caption = QString();
-	_fileLoader.addTask(std::make_shared<FileLoadTask>(result, duration, waveform, to, caption));
+	_fileLoader.addTask(std::make_unique<FileLoadTask>(result, duration, waveform, to, caption));
 }
 
 void HistoryWidget::onRecordUpdate(quint16 level, qint32 samples) {
@@ -4211,16 +4211,16 @@ void HistoryWidget::uploadFilesAfterConfirmation(
 		App::main()->sendMessage(message);
 		caption = QString();
 	}
-	auto tasks = TasksList();
+	auto tasks = std::vector<std::unique_ptr<Task>>();
 	tasks.reserve(files.size());
 	for_const (auto &filepath, files) {
 		if (filepath.isEmpty() && (!image.isNull() || !content.isNull())) {
-			tasks.push_back(std::make_shared<FileLoadTask>(content, image, type, to, caption));
+			tasks.push_back(std::make_unique<FileLoadTask>(content, image, type, to, caption));
 		} else {
-			tasks.push_back(std::make_shared<FileLoadTask>(filepath, std::move(information), type, to, caption));
+			tasks.push_back(std::make_unique<FileLoadTask>(filepath, std::move(information), type, to, caption));
 		}
 	}
-	_fileLoader.addTasks(tasks);
+	_fileLoader.addTasks(std::move(tasks));
 }
 
 void HistoryWidget::uploadFile(const QByteArray &fileContent, SendMediaType type) {
@@ -4228,7 +4228,7 @@ void HistoryWidget::uploadFile(const QByteArray &fileContent, SendMediaType type
 
 	auto to = FileLoadTo(_peer->id, _peer->notifySilentPosts(), replyToId());
 	auto caption = QString();
-	_fileLoader.addTask(std::make_shared<FileLoadTask>(fileContent, QImage(), type, to, caption));
+	_fileLoader.addTask(std::make_unique<FileLoadTask>(fileContent, QImage(), type, to, caption));
 }
 
 void HistoryWidget::sendFileConfirmed(const FileLoadResultPtr &file) {
diff --git a/Telegram/SourceFiles/logs.cpp b/Telegram/SourceFiles/logs.cpp
index 394a320c0..b676d5a42 100644
--- a/Telegram/SourceFiles/logs.cpp
+++ b/Telegram/SourceFiles/logs.cpp
@@ -114,7 +114,7 @@ public:
 	}
 
 private:
-	std::shared_ptr<QFile> files[LogDataCount];
+	std::unique_ptr<QFile> files[LogDataCount];
 	QTextStream streams[LogDataCount];
 
 	int32 part = -1;
@@ -136,7 +136,7 @@ private:
 			if (postfix.isEmpty()) { // instance checked, need to move to log.txt
 				Assert(!files[type]->fileName().isEmpty()); // one of log_startXX.txt should've been opened already
 
-				std::shared_ptr<QFile> to = std::make_shared<QFile>(_logsFilePath(type, postfix));
+				auto to = std::make_unique<QFile>(_logsFilePath(type, postfix));
 				if (to->exists() && !to->remove()) {
 					LOG(("Could not delete '%1' file to start new logging!").arg(to->fileName()));
 					return false;
diff --git a/Telegram/SourceFiles/overview/overview_layout.h b/Telegram/SourceFiles/overview/overview_layout.h
index f8d0e5d8d..df60304c4 100644
--- a/Telegram/SourceFiles/overview/overview_layout.h
+++ b/Telegram/SourceFiles/overview/overview_layout.h
@@ -365,7 +365,7 @@ private:
 		LinkEntry(const QString &url, const QString &text);
 		QString text;
 		int32 width;
-		TextClickHandlerPtr lnk;
+		std::shared_ptr<TextClickHandler> lnk;
 	};
 	QVector<LinkEntry> _links;
 
diff --git a/Telegram/SourceFiles/storage/file_upload.cpp b/Telegram/SourceFiles/storage/file_upload.cpp
index ea0528eb0..1377ca19f 100644
--- a/Telegram/SourceFiles/storage/file_upload.cpp
+++ b/Telegram/SourceFiles/storage/file_upload.cpp
@@ -55,7 +55,7 @@ void Uploader::uploadMedia(const FullMsgId &msgId, const SendMediaReady &media)
 			document->setLocation(FileLocation(media.file));
 		}
 	}
-	queue.insert(msgId, File(media));
+	queue.emplace(msgId, File(media));
 	sendNext();
 }
 
@@ -73,21 +73,21 @@ void Uploader::upload(const FullMsgId &msgId, const FileLoadResultPtr &file) {
 			document->setLocation(FileLocation(file->filepath));
 		}
 	}
-	queue.insert(msgId, File(file));
+	queue.emplace(msgId, File(file));
 	sendNext();
 }
 
 void Uploader::currentFailed() {
-	Queue::iterator j = queue.find(uploading);
+	auto j = queue.find(uploadingId);
 	if (j != queue.end()) {
-		if (j->type() == SendMediaType::Photo) {
-			emit photoFailed(j.key());
-		} else if (j->type() == SendMediaType::File) {
-			DocumentData *doc = App::document(j->id());
-			if (doc->status == FileUploading) {
-				doc->status = FileUploadFailed;
+		if (j->second.type() == SendMediaType::Photo) {
+			emit photoFailed(j->first);
+		} else if (j->second.type() == SendMediaType::File) {
+			const auto document = App::document(j->second.id());
+			if (document->status == FileUploading) {
+				document->status = FileUploadFailed;
 			}
-			emit documentFailed(j.key());
+			emit documentFailed(j->first);
 		}
 		queue.erase(j);
 	}
@@ -95,7 +95,7 @@ void Uploader::currentFailed() {
 	requestsSent.clear();
 	docRequestsSent.clear();
 	dcMap.clear();
-	uploading = FullMsgId();
+	uploadingId = FullMsgId();
 	sentSize = 0;
 	for (int i = 0; i < MTP::kUploadSessionsCount; ++i) {
 		sentSizes[i] = 0;
@@ -111,10 +111,10 @@ void Uploader::killSessions() {
 }
 
 void Uploader::sendNext() {
-	if (sentSize >= kMaxUploadFileParallelSize || _paused.msg) return;
+	if (sentSize >= kMaxUploadFileParallelSize || _pausedId.msg) return;
 
 	bool killing = killSessionsTimer.isActive();
-	if (queue.isEmpty()) {
+	if (queue.empty()) {
 		if (!killing) {
 			killSessionsTimer.start(MTPAckSendWaiting + MTPKillFileSessionTimeout);
 		}
@@ -124,95 +124,172 @@ void Uploader::sendNext() {
 	if (killing) {
 		killSessionsTimer.stop();
 	}
-	Queue::iterator i = uploading.msg ? queue.find(uploading) : queue.begin();
-	if (!uploading.msg) {
-		uploading = i.key();
+	auto i = uploadingId.msg ? queue.find(uploadingId) : queue.begin();
+	if (!uploadingId.msg) {
+		uploadingId = i->first;
 	} else if (i == queue.end()) {
 		i = queue.begin();
-		uploading = i.key();
+		uploadingId = i->first;
 	}
-	int todc = 0;
-	for (int dc = 1; dc < MTP::kUploadSessionsCount; ++dc) {
+	auto &uploadingData = i->second;
+
+	auto todc = 0;
+	for (auto dc = 1; dc != MTP::kUploadSessionsCount; ++dc) {
 		if (sentSizes[dc] < sentSizes[todc]) {
 			todc = dc;
 		}
 	}
 
-	UploadFileParts &parts(i->file ? (i->type() == SendMediaType::Photo ? i->file->fileparts : i->file->thumbparts) : i->media.parts);
-	uint64 partsOfId(i->file ? (i->type() == SendMediaType::Photo ? i->file->id : i->file->thumbId) : i->media.thumbId);
+	auto &parts = uploadingData.file
+		? (uploadingData.type() == SendMediaType::Photo
+			? uploadingData.file->fileparts
+			: uploadingData.file->thumbparts)
+		: uploadingData.media.parts;
+	const auto partsOfId = uploadingData.file
+		? (uploadingData.type() == SendMediaType::Photo
+			? uploadingData.file->id
+			: uploadingData.file->thumbId)
+		: uploadingData.media.thumbId;
 	if (parts.isEmpty()) {
-		if (i->docSentParts >= i->docPartsCount) {
-			if (requestsSent.isEmpty() && docRequestsSent.isEmpty()) {
-				bool silent = i->file && i->file->to.silent;
-				if (i->type() == SendMediaType::Photo) {
-					auto photoFilename = i->filename();
+		if (uploadingData.docSentParts >= uploadingData.docPartsCount) {
+			if (requestsSent.empty() && docRequestsSent.empty()) {
+				const auto silent = uploadingData.file
+					&& uploadingData.file->to.silent;
+				if (uploadingData.type() == SendMediaType::Photo) {
+					auto photoFilename = uploadingData.filename();
 					if (!photoFilename.endsWith(qstr(".jpg"), Qt::CaseInsensitive)) {
 						// Server has some extensions checking for inputMediaUploadedPhoto,
 						// so force the extension to be .jpg anyway. It doesn't matter,
 						// because the filename from inputFile is not used anywhere.
 						photoFilename += qstr(".jpg");
 					}
-					emit photoReady(uploading, silent, MTP_inputFile(MTP_long(i->id()), MTP_int(i->partsCount), MTP_string(photoFilename), MTP_bytes(i->file ? i->file->filemd5 : i->media.jpeg_md5)));
-				} else if (i->type() == SendMediaType::File || i->type() == SendMediaType::Audio) {
+					const auto md5 = uploadingData.file
+						? uploadingData.file->filemd5
+						: uploadingData.media.jpeg_md5;
+					const auto file = MTP_inputFile(
+						MTP_long(uploadingData.id()),
+						MTP_int(uploadingData.partsCount),
+						MTP_string(photoFilename),
+						MTP_bytes(md5));
+					emit photoReady(uploadingId, silent, file);
+				} else if (uploadingData.type() == SendMediaType::File
+					|| uploadingData.type() == SendMediaType::Audio) {
 					QByteArray docMd5(32, Qt::Uninitialized);
-					hashMd5Hex(i->md5Hash.result(), docMd5.data());
+					hashMd5Hex(uploadingData.md5Hash.result(), docMd5.data());
 
-					MTPInputFile doc = (i->docSize > UseBigFilesFrom) ? MTP_inputFileBig(MTP_long(i->id()), MTP_int(i->docPartsCount), MTP_string(i->filename())) : MTP_inputFile(MTP_long(i->id()), MTP_int(i->docPartsCount), MTP_string(i->filename()), MTP_bytes(docMd5));
-					if (i->partsCount) {
-						emit thumbDocumentReady(uploading, silent, doc, MTP_inputFile(MTP_long(i->thumbId()), MTP_int(i->partsCount), MTP_string(i->file ? i->file->thumbname : (qsl("thumb.") + i->media.thumbExt)), MTP_bytes(i->file ? i->file->thumbmd5 : i->media.jpeg_md5)));
+					const auto file = (uploadingData.docSize > UseBigFilesFrom)
+						? MTP_inputFileBig(
+							MTP_long(uploadingData.id()),
+							MTP_int(uploadingData.docPartsCount),
+							MTP_string(uploadingData.filename()))
+						: MTP_inputFile(
+							MTP_long(uploadingData.id()),
+							MTP_int(uploadingData.docPartsCount),
+							MTP_string(uploadingData.filename()),
+							MTP_bytes(docMd5));
+					if (uploadingData.partsCount) {
+						const auto thumbFilename = uploadingData.file
+							? uploadingData.file->thumbname
+							: (qsl("thumb.") + uploadingData.media.thumbExt);
+						const auto thumbMd5 = uploadingData.file
+							? uploadingData.file->thumbmd5
+							: uploadingData.media.jpeg_md5;
+						const auto thumb = MTP_inputFile(
+							MTP_long(uploadingData.thumbId()),
+							MTP_int(uploadingData.partsCount),
+							MTP_string(thumbFilename),
+							MTP_bytes(thumbMd5));
+						emit thumbDocumentReady(
+							uploadingId,
+							silent,
+							file,
+							thumb);
 					} else {
-						emit documentReady(uploading, silent, doc);
+						emit documentReady(uploadingId, silent, file);
 					}
 				}
-				queue.remove(uploading);
-				uploading = FullMsgId();
+				queue.erase(uploadingId);
+				uploadingId = FullMsgId();
 				sendNext();
 			}
 			return;
 		}
 
-		QByteArray &content(i->file ? i->file->content : i->media.data);
+		auto &content = uploadingData.file
+			? uploadingData.file->content
+			: uploadingData.media.data;
 		QByteArray toSend;
 		if (content.isEmpty()) {
-			if (!i->docFile) {
-				i->docFile.reset(new QFile(i->file ? i->file->filepath : i->media.file));
-				if (!i->docFile->open(QIODevice::ReadOnly)) {
+			if (!uploadingData.docFile) {
+				const auto filepath = uploadingData.file
+					? uploadingData.file->filepath
+					: uploadingData.media.file;
+				uploadingData.docFile = std::make_unique<QFile>(filepath);
+				if (!uploadingData.docFile->open(QIODevice::ReadOnly)) {
 					currentFailed();
 					return;
 				}
 			}
-			toSend = i->docFile->read(i->docPartSize);
-			if (i->docSize <= UseBigFilesFrom) {
-				i->md5Hash.feed(toSend.constData(), toSend.size());
+			toSend = uploadingData.docFile->read(uploadingData.docPartSize);
+			if (uploadingData.docSize <= UseBigFilesFrom) {
+				uploadingData.md5Hash.feed(toSend.constData(), toSend.size());
 			}
 		} else {
-			toSend = content.mid(i->docSentParts * i->docPartSize, i->docPartSize);
-			if ((i->type() == SendMediaType::File || i->type() == SendMediaType::Audio) && i->docSentParts <= UseBigFilesFrom) {
-				i->md5Hash.feed(toSend.constData(), toSend.size());
+			const auto offset = uploadingData.docSentParts
+				* uploadingData.docPartSize;
+			toSend = content.mid(offset, uploadingData.docPartSize);
+			if ((uploadingData.type() == SendMediaType::File
+				|| uploadingData.type() == SendMediaType::Audio)
+				&& uploadingData.docSentParts <= UseBigFilesFrom) {
+				uploadingData.md5Hash.feed(toSend.constData(), toSend.size());
 			}
 		}
-		if (toSend.size() > i->docPartSize || (toSend.size() < i->docPartSize && i->docSentParts + 1 != i->docPartsCount)) {
+		if ((toSend.size() > uploadingData.docPartSize)
+			|| ((toSend.size() < uploadingData.docPartSize
+				&& uploadingData.docSentParts + 1 != uploadingData.docPartsCount))) {
 			currentFailed();
 			return;
 		}
 		mtpRequestId requestId;
-		if (i->docSize > UseBigFilesFrom) {
-			requestId = MTP::send(MTPupload_SaveBigFilePart(MTP_long(i->id()), MTP_int(i->docSentParts), MTP_int(i->docPartsCount), MTP_bytes(toSend)), rpcDone(&Uploader::partLoaded), rpcFail(&Uploader::partFailed), MTP::uploadDcId(todc));
+		if (uploadingData.docSize > UseBigFilesFrom) {
+			requestId = MTP::send(
+				MTPupload_SaveBigFilePart(
+					MTP_long(uploadingData.id()),
+					MTP_int(uploadingData.docSentParts),
+					MTP_int(uploadingData.docPartsCount),
+					MTP_bytes(toSend)),
+				rpcDone(&Uploader::partLoaded),
+				rpcFail(&Uploader::partFailed),
+				MTP::uploadDcId(todc));
 		} else {
-			requestId = MTP::send(MTPupload_SaveFilePart(MTP_long(i->id()), MTP_int(i->docSentParts), MTP_bytes(toSend)), rpcDone(&Uploader::partLoaded), rpcFail(&Uploader::partFailed), MTP::uploadDcId(todc));
+			requestId = MTP::send(
+				MTPupload_SaveFilePart(
+					MTP_long(uploadingData.id()),
+					MTP_int(uploadingData.docSentParts),
+					MTP_bytes(toSend)),
+				rpcDone(&Uploader::partLoaded),
+				rpcFail(&Uploader::partFailed),
+				MTP::uploadDcId(todc));
 		}
-		docRequestsSent.insert(requestId, i->docSentParts);
-		dcMap.insert(requestId, todc);
-		sentSize += i->docPartSize;
-		sentSizes[todc] += i->docPartSize;
+		docRequestsSent.emplace(requestId, uploadingData.docSentParts);
+		dcMap.emplace(requestId, todc);
+		sentSize += uploadingData.docPartSize;
+		sentSizes[todc] += uploadingData.docPartSize;
 
-		i->docSentParts++;
+		uploadingData.docSentParts++;
 	} else {
-		UploadFileParts::iterator part = parts.begin();
+		auto part = parts.begin();
 
-		mtpRequestId requestId = MTP::send(MTPupload_SaveFilePart(MTP_long(partsOfId), MTP_int(part.key()), MTP_bytes(part.value())), rpcDone(&Uploader::partLoaded), rpcFail(&Uploader::partFailed), MTP::uploadDcId(todc));
-		requestsSent.insert(requestId, part.value());
-		dcMap.insert(requestId, todc);
+		const auto requestId = MTP::send(
+			MTPupload_SaveFilePart(
+				MTP_long(partsOfId),
+				MTP_int(part.key()),
+				MTP_bytes(part.value())),
+			rpcDone(&Uploader::partLoaded),
+			rpcFail(&Uploader::partFailed),
+			MTP::uploadDcId(todc));
+		requestsSent.emplace(requestId, part.value());
+		dcMap.emplace(requestId, todc);
 		sentSize += part.value().size();
 		sentSizes[todc] += part.value().size();
 
@@ -222,20 +299,20 @@ void Uploader::sendNext() {
 }
 
 void Uploader::cancel(const FullMsgId &msgId) {
-	uploaded.remove(msgId);
-	if (uploading == msgId) {
+	uploaded.erase(msgId);
+	if (uploadingId == msgId) {
 		currentFailed();
 	} else {
-		queue.remove(msgId);
+		queue.erase(msgId);
 	}
 }
 
 void Uploader::pause(const FullMsgId &msgId) {
-	_paused = msgId;
+	_pausedId = msgId;
 }
 
 void Uploader::unpause() {
-	_paused = FullMsgId();
+	_pausedId = FullMsgId();
 	sendNext();
 }
 
@@ -245,12 +322,12 @@ void Uploader::confirm(const FullMsgId &msgId) {
 void Uploader::clear() {
 	uploaded.clear();
 	queue.clear();
-	for (QMap<mtpRequestId, QByteArray>::const_iterator i = requestsSent.cbegin(), e = requestsSent.cend(); i != e; ++i) {
-		MTP::cancel(i.key());
+	for (const auto &[requestId, requestData] : requestsSent) {
+		MTP::cancel(requestId);
 	}
 	requestsSent.clear();
-	for (QMap<mtpRequestId, int32>::const_iterator i = docRequestsSent.cbegin(), e = docRequestsSent.cend(); i != e; ++i) {
-		MTP::cancel(i.key());
+	for (const auto &[requestId, requestIndex] : docRequestsSent) {
+		MTP::cancel(requestId);
 	}
 	docRequestsSent.clear();
 	dcMap.clear();
@@ -263,8 +340,8 @@ void Uploader::clear() {
 }
 
 void Uploader::partLoaded(const MTPBool &result, mtpRequestId requestId) {
-	QMap<mtpRequestId, int32>::iterator j = docRequestsSent.end();
-	QMap<mtpRequestId, QByteArray>::iterator i = requestsSent.find(requestId);
+	auto j = docRequestsSent.end();
+	auto i = requestsSent.find(requestId);
 	if (i == requestsSent.cend()) {
 		j = docRequestsSent.find(requestId);
 	}
@@ -273,42 +350,47 @@ void Uploader::partLoaded(const MTPBool &result, mtpRequestId requestId) {
 			currentFailed();
 			return;
 		} else {
-			QMap<mtpRequestId, int32>::iterator dcIt = dcMap.find(requestId);
+			auto dcIt = dcMap.find(requestId);
 			if (dcIt == dcMap.cend()) { // must not happen
 				currentFailed();
 				return;
 			}
-			int32 dc = dcIt.value();
+			auto dc = dcIt->second;
 			dcMap.erase(dcIt);
 
 			int32 sentPartSize = 0;
-			Queue::const_iterator k = queue.constFind(uploading);
+			auto k = queue.find(uploadingId);
+			Assert(k != queue.cend());
+			auto &[fullId, file] = *k;
 			if (i != requestsSent.cend()) {
-				sentPartSize = i.value().size();
+				sentPartSize = i->second.size();
 				requestsSent.erase(i);
 			} else {
-				sentPartSize = k->docPartSize;
+				sentPartSize = file.docPartSize;
 				docRequestsSent.erase(j);
 			}
 			sentSize -= sentPartSize;
 			sentSizes[dc] -= sentPartSize;
-			if (k->type() == SendMediaType::Photo) {
-				k->fileSentSize += sentPartSize;
-				PhotoData *photo = App::photo(k->id());
-				if (photo->uploading() && k->file) {
-					photo->uploadingData->size = k->file->partssize;
-					photo->uploadingData->offset = k->fileSentSize;
+			if (file.type() == SendMediaType::Photo) {
+				file.fileSentSize += sentPartSize;
+				const auto photo = App::photo(file.id());
+				if (photo->uploading() && file.file) {
+					photo->uploadingData->size = file.file->partssize;
+					photo->uploadingData->offset = file.fileSentSize;
 				}
-				emit photoProgress(k.key());
-			} else if (k->type() == SendMediaType::File || k->type() == SendMediaType::Audio) {
-				DocumentData *doc = App::document(k->id());
-				if (doc->uploading()) {
-					doc->uploadOffset = (k->docSentParts - docRequestsSent.size()) * k->docPartSize;
-					if (doc->uploadOffset > doc->size) {
-						doc->uploadOffset = doc->size;
+				emit photoProgress(fullId);
+			} else if (file.type() == SendMediaType::File
+				|| file.type() == SendMediaType::Audio) {
+				const auto document = App::document(file.id());
+				if (document->uploading()) {
+					const auto doneParts = file.docSentParts
+						- int(docRequestsSent.size());
+					document->uploadOffset = doneParts * file.docPartSize;
+					if (document->uploadOffset > document->size) {
+						document->uploadOffset = document->size;
 					}
 				}
-				emit documentProgress(k.key());
+				emit documentProgress(fullId);
 			}
 		}
 	}
@@ -319,7 +401,9 @@ void Uploader::partLoaded(const MTPBool &result, mtpRequestId requestId) {
 bool Uploader::partFailed(const RPCError &error, mtpRequestId requestId) {
 	if (MTP::isDefaultHandledError(error)) return false;
 
-	if (requestsSent.constFind(requestId) != requestsSent.cend() || docRequestsSent.constFind(requestId) != docRequestsSent.cend()) { // failed to upload current file
+	// failed to upload current file
+	if ((requestsSent.find(requestId) != requestsSent.cend())
+		|| (docRequestsSent.find(requestId) != docRequestsSent.cend())) {
 		currentFailed();
 	}
 	sendNext();
diff --git a/Telegram/SourceFiles/storage/file_upload.h b/Telegram/SourceFiles/storage/file_upload.h
index 96936554c..350529243 100644
--- a/Telegram/SourceFiles/storage/file_upload.h
+++ b/Telegram/SourceFiles/storage/file_upload.h
@@ -117,28 +117,28 @@ private:
 
 		HashMd5 md5Hash;
 
-		std::shared_ptr<QFile> docFile;
+		std::unique_ptr<QFile> docFile;
 		int32 docSentParts;
 		int32 docSize;
 		int32 docPartSize;
 		int32 docPartsCount;
 	};
-	typedef QMap<FullMsgId, File> Queue;
 
 	void partLoaded(const MTPBool &result, mtpRequestId requestId);
 	bool partFailed(const RPCError &err, mtpRequestId requestId);
 
 	void currentFailed();
 
-	QMap<mtpRequestId, QByteArray> requestsSent;
-	QMap<mtpRequestId, int32> docRequestsSent;
-	QMap<mtpRequestId, int32> dcMap;
+	base::flat_map<mtpRequestId, QByteArray> requestsSent;
+	base::flat_map<mtpRequestId, int32> docRequestsSent;
+	base::flat_map<mtpRequestId, int32> dcMap;
 	uint32 sentSize = 0;
 	uint32 sentSizes[MTP::kUploadSessionsCount] = { 0 };
 
-	FullMsgId uploading, _paused;
-	Queue queue;
-	Queue uploaded;
+	FullMsgId uploadingId;
+	FullMsgId _pausedId;
+	std::map<FullMsgId, File> queue;
+	std::map<FullMsgId, File> uploaded;
 	QTimer nextTimer, killSessionsTimer;
 
 };
diff --git a/Telegram/SourceFiles/storage/localimageloader.cpp b/Telegram/SourceFiles/storage/localimageloader.cpp
index 51543dc19..06a54a3a2 100644
--- a/Telegram/SourceFiles/storage/localimageloader.cpp
+++ b/Telegram/SourceFiles/storage/localimageloader.cpp
@@ -48,21 +48,24 @@ TaskQueue::TaskQueue(QObject *parent, int32 stopTimeoutMs) : QObject(parent), _t
 	}
 }
 
-TaskId TaskQueue::addTask(TaskPtr task) {
+TaskId TaskQueue::addTask(std::unique_ptr<Task> &&task) {
+	const auto result = task->id();
 	{
 		QMutexLocker lock(&_tasksToProcessMutex);
-		_tasksToProcess.push_back(task);
+		_tasksToProcess.push_back(std::move(task));
 	}
 
 	wakeThread();
 
-	return task->id();
+	return result;
 }
 
-void TaskQueue::addTasks(const TasksList &tasks) {
+void TaskQueue::addTasks(std::vector<std::unique_ptr<Task>> &&tasks) {
 	{
 		QMutexLocker lock(&_tasksToProcessMutex);
-		_tasksToProcess.append(tasks);
+		for (auto &task : tasks) {
+			_tasksToProcess.push_back(std::move(task));
+		}
 	}
 
 	wakeThread();
@@ -85,31 +88,33 @@ void TaskQueue::wakeThread() {
 }
 
 void TaskQueue::cancelTask(TaskId id) {
+	const auto removeFrom = [&](std::deque<std::unique_ptr<Task>> &queue) {
+		const auto proj = [](const std::unique_ptr<Task> &task) {
+			return task->id();
+		};
+		auto i = ranges::find(queue, id, proj);
+		if (i != queue.end()) {
+			queue.erase(i);
+		}
+	};
 	{
 		QMutexLocker lock(&_tasksToProcessMutex);
-		for (int32 i = 0, l = _tasksToProcess.size(); i != l; ++i) {
-			if (_tasksToProcess.at(i)->id() == id) {
-				_tasksToProcess.removeAt(i);
-				return;
-			}
+		removeFrom(_tasksToProcess);
+		if (_taskInProcessId == id) {
+			_taskInProcessId = TaskId();
 		}
 	}
 	QMutexLocker lock(&_tasksToFinishMutex);
-	for (int32 i = 0, l = _tasksToFinish.size(); i != l; ++i) {
-		if (_tasksToFinish.at(i)->id() == id) {
-			_tasksToFinish.removeAt(i);
-			return;
-		}
-	}
+	removeFrom(_tasksToFinish);
 }
 
 void TaskQueue::onTaskProcessed() {
 	do {
-		TaskPtr task;
+		auto task = std::unique_ptr<Task>();
 		{
 			QMutexLocker lock(&_tasksToFinishMutex);
-			if (_tasksToFinish.isEmpty()) break;
-			task = _tasksToFinish.front();
+			if (_tasksToFinish.empty()) break;
+			task = std::move(_tasksToFinish.front());
 			_tasksToFinish.pop_front();
 		}
 		task->finish();
@@ -117,7 +122,7 @@ void TaskQueue::onTaskProcessed() {
 
 	if (_stopTimer) {
 		QMutexLocker lock(&_tasksToProcessMutex);
-		if (_tasksToProcess.isEmpty()) {
+		if (_tasksToProcess.empty() && !_taskInProcessId) {
 			_stopTimer->start();
 		}
 	}
@@ -136,6 +141,7 @@ void TaskQueue::stop() {
 	}
 	_tasksToProcess.clear();
 	_tasksToFinish.clear();
+	_taskInProcessId = TaskId();
 }
 
 TaskQueue::~TaskQueue() {
@@ -149,11 +155,13 @@ void TaskQueueWorker::onTaskAdded() {
 
 	bool someTasksLeft = false;
 	do {
-		TaskPtr task;
+		auto task = std::unique_ptr<Task>();
 		{
 			QMutexLocker lock(&_queue->_tasksToProcessMutex);
-			if (!_queue->_tasksToProcess.isEmpty()) {
-				task = _queue->_tasksToProcess.front();
+			if (!_queue->_tasksToProcess.empty()) {
+				task = std::move(_queue->_tasksToProcess.front());
+				_queue->_tasksToProcess.pop_front();
+				_queue->_taskInProcessId = task->id();
 			}
 		}
 
@@ -162,13 +170,13 @@ void TaskQueueWorker::onTaskAdded() {
 			bool emitTaskProcessed = false;
 			{
 				QMutexLocker lockToProcess(&_queue->_tasksToProcessMutex);
-				if (!_queue->_tasksToProcess.isEmpty() && _queue->_tasksToProcess.front() == task) {
-					_queue->_tasksToProcess.pop_front();
-					someTasksLeft = !_queue->_tasksToProcess.isEmpty();
+				if (_queue->_taskInProcessId == task->id()) {
+					_queue->_taskInProcessId = TaskId();
+					someTasksLeft = !_queue->_tasksToProcess.empty();
 
 					QMutexLocker lockToFinish(&_queue->_tasksToFinishMutex);
-					emitTaskProcessed = _queue->_tasksToFinish.isEmpty();
-					_queue->_tasksToFinish.push_back(task);
+					emitTaskProcessed = _queue->_tasksToFinish.empty();
+					_queue->_tasksToFinish.push_back(std::move(task));
 				}
 			}
 			if (emitTaskProcessed) {
diff --git a/Telegram/SourceFiles/storage/localimageloader.h b/Telegram/SourceFiles/storage/localimageloader.h
index 80fc15eb0..d5a3a8820 100644
--- a/Telegram/SourceFiles/storage/localimageloader.h
+++ b/Telegram/SourceFiles/storage/localimageloader.h
@@ -114,8 +114,6 @@ public:
 	}
 
 };
-using TaskPtr = std::shared_ptr<Task>;
-using TasksList = QList<TaskPtr>;
 
 class TaskQueueWorker;
 class TaskQueue : public QObject {
@@ -124,8 +122,8 @@ class TaskQueue : public QObject {
 public:
 	TaskQueue(QObject *parent, int32 stopTimeoutMs = 0); // <= 0 - never stop worker
 
-	TaskId addTask(TaskPtr task);
-	void addTasks(const TasksList &tasks);
+	TaskId addTask(std::unique_ptr<Task> &&task);
+	void addTasks(std::vector<std::unique_ptr<Task>> &&tasks);
 	void cancelTask(TaskId id); // this task finish() won't be called
 
 	~TaskQueue();
@@ -142,7 +140,9 @@ private:
 
 	void wakeThread();
 
-	TasksList _tasksToProcess, _tasksToFinish;
+	std::deque<std::unique_ptr<Task>> _tasksToProcess;
+	std::deque<std::unique_ptr<Task>> _tasksToFinish;
+	TaskId _taskInProcessId = TaskId();
 	QMutex _tasksToProcessMutex, _tasksToFinishMutex;
 	QThread *_thread;
 	TaskQueueWorker *_worker;
diff --git a/Telegram/SourceFiles/storage/localstorage.cpp b/Telegram/SourceFiles/storage/localstorage.cpp
index 3c64f1800..5e0ac58e0 100644
--- a/Telegram/SourceFiles/storage/localstorage.cpp
+++ b/Telegram/SourceFiles/storage/localstorage.cpp
@@ -165,9 +165,7 @@ void createLocalKey(const QByteArray &pass, QByteArray *salt, MTP::AuthKeyPtr *r
 }
 
 struct FileReadDescriptor {
-	FileReadDescriptor() : version(0) {
-	}
-	int32 version;
+	int32 version = 0;
 	QByteArray data;
 	QBuffer buffer;
 	QDataStream stream;
@@ -2854,7 +2852,8 @@ TaskId startImageLoad(const StorageKey &location, mtpFileLoader *loader) {
 	if (j == _imagesMap.cend() || !_localLoader) {
 		return 0;
 	}
-	return _localLoader->addTask(std::make_shared<ImageLoadTask>(j->first, location, loader));
+	return _localLoader->addTask(
+		std::make_unique<ImageLoadTask>(j->first, location, loader));
 }
 
 int32 hasImages() {
@@ -2912,7 +2911,8 @@ TaskId startStickerImageLoad(const StorageKey &location, mtpFileLoader *loader)
 	if (j == _stickerImagesMap.cend() || !_localLoader) {
 		return 0;
 	}
-	return _localLoader->addTask(std::make_shared<StickerImageLoadTask>(j->first, location, loader));
+	return _localLoader->addTask(
+		std::make_unique<StickerImageLoadTask>(j->first, location, loader));
 }
 
 bool willStickerImageLoad(const StorageKey &location) {
@@ -2985,7 +2985,8 @@ TaskId startAudioLoad(const StorageKey &location, mtpFileLoader *loader) {
 	if (j == _audiosMap.cend() || !_localLoader) {
 		return 0;
 	}
-	return _localLoader->addTask(std::make_shared<AudioLoadTask>(j->first, location, loader));
+	return _localLoader->addTask(
+		std::make_unique<AudioLoadTask>(j->first, location, loader));
 }
 
 bool copyAudio(const StorageKey &oldLocation, const StorageKey &newLocation) {
@@ -3101,7 +3102,8 @@ TaskId startWebFileLoad(const QString &url, webFileLoader *loader) {
 	if (j == _webFilesMap.cend() || !_localLoader) {
 		return 0;
 	}
-	return _localLoader->addTask(std::make_shared<WebFileLoadTask>(j->first, url, loader));
+	return _localLoader->addTask(
+		std::make_unique<WebFileLoadTask>(j->first, url, loader));
 }
 
 int32 hasWebFiles() {
@@ -3177,7 +3179,8 @@ void countVoiceWaveform(DocumentData *document) {
 		if (_localLoader) {
 			voice->waveform.resize(1 + sizeof(TaskId));
 			voice->waveform[0] = -1; // counting
-			TaskId taskId = _localLoader->addTask(std::make_shared<CountWaveformTask>(document));
+			TaskId taskId = _localLoader->addTask(
+				std::make_unique<CountWaveformTask>(document));
 			memcpy(voice->waveform.data() + 1, &taskId, sizeof(taskId));
 		}
 	}
diff --git a/Telegram/SourceFiles/ui/widgets/discrete_sliders.cpp b/Telegram/SourceFiles/ui/widgets/discrete_sliders.cpp
index a04f999c3..85f3c0cc3 100644
--- a/Telegram/SourceFiles/ui/widgets/discrete_sliders.cpp
+++ b/Telegram/SourceFiles/ui/widgets/discrete_sliders.cpp
@@ -91,7 +91,8 @@ void DiscreteSlider::setSections(const QStringList &labels) {
 }
 
 int DiscreteSlider::getCurrentActiveLeft(TimeMs ms) {
-	return _a_left.current(ms, _sections.isEmpty() ? 0 : _sections[_selected].left);
+	const auto left = _sections.empty() ? 0 : _sections[_selected].left;
+	return _a_left.current(ms, left);
 }
 
 template <typename Lambda>
@@ -253,9 +254,13 @@ void SettingsSlider::startRipple(int sectionIndex) {
 		if (index++ == sectionIndex) {
 			if (!section.ripple) {
 				auto mask = prepareRippleMask(sectionIndex, section);
-				section.ripple = std::make_shared<RippleAnimation>(_st.ripple, std::move(mask), [this] { update(); });
+				section.ripple = std::make_unique<RippleAnimation>(
+					_st.ripple,
+					std::move(mask),
+					[this] { update(); });
 			}
-			section.ripple->add(mapFromGlobal(QCursor::pos()) - QPoint(section.left, 0));
+			const auto point = mapFromGlobal(QCursor::pos());
+			section.ripple->add(point - QPoint(section.left, 0));
 			return false;
 		}
 		return true;
diff --git a/Telegram/SourceFiles/ui/widgets/discrete_sliders.h b/Telegram/SourceFiles/ui/widgets/discrete_sliders.h
index 18599b27d..ab315f19a 100644
--- a/Telegram/SourceFiles/ui/widgets/discrete_sliders.h
+++ b/Telegram/SourceFiles/ui/widgets/discrete_sliders.h
@@ -59,7 +59,7 @@ protected:
 		int left, width;
 		QString label;
 		int labelWidth;
-		std::shared_ptr<RippleAnimation> ripple;
+		std::unique_ptr<RippleAnimation> ripple;
 	};
 
 	int getCurrentActiveLeft(TimeMs ms);
@@ -91,7 +91,7 @@ private:
 	int getIndexFromPosition(QPoint pos);
 	void setSelectedSection(int index);
 
-	QList<Section> _sections;
+	std::vector<Section> _sections;
 	int _activeIndex = 0;
 	bool _selectOnPress = true;