From 0539cc9448c18bfd4cd7a829c0ef9d48eac13738 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 16 Oct 2020 13:38:12 +0300
Subject: [PATCH] Add a way to recreate SendFilesBox content.

---
 Telegram/SourceFiles/apiwrap.cpp              |   1 +
 Telegram/SourceFiles/boxes/boxes.style        |   6 +-
 .../SourceFiles/boxes/edit_caption_box.cpp    |   2 +-
 Telegram/SourceFiles/boxes/send_files_box.cpp | 254 ++++++++++--------
 Telegram/SourceFiles/boxes/send_files_box.h   |  36 ++-
 .../storage/storage_media_prepare.cpp         |  11 +-
 .../ui/chat/attach/attach_album_preview.cpp   |  41 +--
 .../ui/chat/attach/attach_album_preview.h     |   8 +-
 .../ui/chat/attach/attach_album_thumbnail.cpp |   6 +-
 .../ui/chat/attach/attach_prepare.cpp         |   6 +-
 .../ui/chat/attach/attach_prepare.h           |   1 +
 11 files changed, 217 insertions(+), 155 deletions(-)

diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index 1830eee54d..7de96c1ad8 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -4235,6 +4235,7 @@ void ApiWrap::sendFiles(
 				type = SendMediaType::Photo;
 				break;
 			case Ui::PreparedFile::AlbumType::Video:
+			case Ui::PreparedFile::AlbumType::File:
 				type = SendMediaType::File;
 				break;
 			default: Unexpected("AlbumType in uploadFilesAfterConfirmation");
diff --git a/Telegram/SourceFiles/boxes/boxes.style b/Telegram/SourceFiles/boxes/boxes.style
index ac791872f6..528cd1f703 100644
--- a/Telegram/SourceFiles/boxes/boxes.style
+++ b/Telegram/SourceFiles/boxes/boxes.style
@@ -489,7 +489,7 @@ backgroundScroll: ScrollArea(boxScroll) {
 	deltab: 10px;
 }
 
-editMediaButtonSize: 29px;
+editMediaButtonSize: 28px;
 editMediaButtonSkip: 8px;
 editMediaButtonFileSkipRight: 1px;
 editMediaButtonFileSkipTop: 7px;
@@ -514,6 +514,10 @@ sendBoxAlbumGroupSkipTop: 6px;
 sendBoxAlbumGroupRadius: 12px;
 sendBoxAlbumGroupHeight: 25px;
 
+sendBoxFileGroupSkipTop: 2px;
+sendBoxFileGroupSkipRight: 0px;
+sendBoxFileGroupEditInternalSkip: 4px;
+
 sendBoxAlbumGroupEditButtonIcon: editMediaButtonIconPhoto;
 sendBoxAlbumGroupEditButtonIconPosition: point(4px, -1px);
 
diff --git a/Telegram/SourceFiles/boxes/edit_caption_box.cpp b/Telegram/SourceFiles/boxes/edit_caption_box.cpp
index 659151e98d..03e2f9e473 100644
--- a/Telegram/SourceFiles/boxes/edit_caption_box.cpp
+++ b/Telegram/SourceFiles/boxes/edit_caption_box.cpp
@@ -689,7 +689,7 @@ bool EditCaptionBox::fileFromClipboard(not_null<const QMimeData*> data) {
 	}
 
 	const auto file = &list.files.front();
-	if (_isAlbum && (file->type == AlbumType::File)) {
+	if (_isAlbum && (file->type == AlbumType::File || file->type == AlbumType::None)) {
 		const auto imageAsDoc = [&] {
 			using Info = Ui::PreparedFileInformation;
 			const auto fileMedia = &file->information->media;
diff --git a/Telegram/SourceFiles/boxes/send_files_box.cpp b/Telegram/SourceFiles/boxes/send_files_box.cpp
index f0accfe2e2..f405c48a18 100644
--- a/Telegram/SourceFiles/boxes/send_files_box.cpp
+++ b/Telegram/SourceFiles/boxes/send_files_box.cpp
@@ -100,6 +100,95 @@ rpl::producer<QString> FieldPlaceholder(
 
 } // namespace
 
+SendFilesBox::Block::Block(
+	not_null<QWidget*> parent,
+	not_null<std::vector<Ui::PreparedFile>*> items,
+	int from,
+	int till,
+	Fn<bool()> gifPaused,
+	SendFilesWay way)
+: _items(items)
+, _from(from)
+, _till(till) {
+	Expects(from >= 0);
+	Expects(till > from);
+	Expects(till <= items->size());
+
+	const auto count = till - from;
+	const auto my = gsl::make_span(*items).subspan(from, count);
+	const auto &first = my.front();
+	_isAlbum = (my.size() > 1)
+		|| (first.type == Ui::PreparedFile::AlbumType::Photo);
+	if (_isAlbum) {
+		const auto preview = Ui::CreateChild<Ui::AlbumPreview>(
+			parent.get(),
+			my,
+			way);
+		_preview.reset(preview);
+	} else {
+		const auto media = Ui::SingleMediaPreview::Create(
+			parent,
+			gifPaused,
+			first);
+		if (media) {
+			_preview.reset(media);
+		} else {
+			_preview.reset(
+				Ui::CreateChild<Ui::SingleFilePreview>(parent.get(), first));
+		}
+	}
+	_preview->show();
+}
+
+int SendFilesBox::Block::fromIndex() const {
+	return _from;
+}
+
+int SendFilesBox::Block::tillIndex() const {
+	return _till;
+}
+
+object_ptr<Ui::RpWidget> SendFilesBox::Block::takeWidget() {
+	return object_ptr<Ui::RpWidget>::fromRaw(_preview.get());
+}
+
+void SendFilesBox::Block::setSendWay(Ui::SendFilesWay way) {
+	if (!_isAlbum) {
+		return;
+	}
+	applyAlbumOrder();
+	const auto album = static_cast<Ui::AlbumPreview*>(_preview.get());
+	album->setSendWay(way);
+}
+
+void SendFilesBox::Block::applyAlbumOrder() {
+	if (!_isAlbum) {
+		return;
+	}
+	const auto album = static_cast<Ui::AlbumPreview*>(_preview.get());
+	const auto order = album->takeOrder();
+	const auto isIdentity = [&] {
+		for (auto i = 0, count = int(order.size()); i != count; ++i) {
+			if (order[i] != i) {
+				return false;
+			}
+		}
+		return true;
+	}();
+	if (isIdentity) {
+		return;
+	}
+
+	auto elements = std::vector<Ui::PreparedFile>();
+	elements.reserve(order.size());
+	for (const auto index : order) {
+		elements.push_back(std::move((*_items)[_from + index]));
+	}
+	for (auto i = 0, count = int(order.size()); i != count; ++i) {
+		(*_items)[_from + i] = std::move(elements[i]);
+	}
+}
+
 SendFilesBox::SendFilesBox(
 	QWidget*,
 	not_null<Window::SessionController*> controller,
@@ -147,36 +236,6 @@ void SendFilesBox::initPreview() {
 	}, _dimensionsLifetime);
 }
 
-//void SendFilesBox::prepareSingleFilePreview() {
-//	const auto &file = _list.files[0];
-//	const auto controller = _controller;
-//	const auto media = Ui::SingleMediaPreview::Create(this, [=] {
-//		return controller->isGifPausedAtLeastFor(
-//			Window::GifPauseReason::Layer);
-//	}, file);
-//	if (media) {
-//		_preview = media;
-//		initPreview(media->desiredHeightValue());
-//	} else {
-//		const auto preview = Ui::CreateChild<Ui::SingleFilePreview>(this, file);
-//		_preview = preview;
-//		initPreview(preview->desiredHeightValue());
-//	}
-//}
-
-//void SendFilesBox::prepareAlbumPreview() {
-//	addThumbButtonHandlers(wrap); // #TODO files
-//
-//	setupShadows(wrap, _albumPreview);
-//
-//	initPreview(_albumPreview->desiredHeightValue());
-//
-//	crl::on_main([=] {
-//		wrap->scrollToY(_lastScrollTop);
-//		_lastScrollTop = 0;
-//	});
-//}
-
 void SendFilesBox::addThumbButtonHandlers(not_null<Ui::ScrollArea*> wrap) {
 	// #TODO files
 	//_albumPreview->thumbDeleted(
@@ -224,14 +283,12 @@ void SendFilesBox::addThumbButtonHandlers(not_null<Ui::ScrollArea*> wrap) {
 	//}, _albumPreview->lifetime());
 }
 
-void SendFilesBox::setupShadows(
-		not_null<Ui::ScrollArea*> wrap,
-		not_null<Ui::AlbumPreview*> content) {
+void SendFilesBox::setupShadows() {
 	using namespace rpl::mappers;
 
 	const auto topShadow = Ui::CreateChild<Ui::FadeShadow>(this);
 	const auto bottomShadow = Ui::CreateChild<Ui::FadeShadow>(this);
-	wrap->geometryValue(
+	_scroll->geometryValue(
 	) | rpl::start_with_next_done([=](const QRect &geometry) {
 		topShadow->resizeToWidth(geometry.width());
 		topShadow->move(
@@ -246,11 +303,11 @@ void SendFilesBox::setupShadows(
 		Ui::DestroyChild(b.data());
 	}, topShadow->lifetime());
 
-	topShadow->toggleOn(wrap->scrollTopValue() | rpl::map(_1 > 0));
+	topShadow->toggleOn(_scroll->scrollTopValue() | rpl::map(_1 > 0));
 	bottomShadow->toggleOn(rpl::combine(
-		wrap->scrollTopValue(),
-		wrap->heightValue(),
-		content->heightValue(),
+		_scroll->scrollTopValue(),
+		_scroll->heightValue(),
+		_inner->heightValue(),
 		_1 + _2 < _3));
 }
 
@@ -269,9 +326,7 @@ void SendFilesBox::prepare() {
 	setupSendWayControls();
 	preparePreview();
 	initPreview();
-
-	_scroll->show();
-	_inner->show();
+	setupShadows();
 
 	boxClosing() | rpl::start_with_next([=] {
 		if (!_confirmed && _cancelledCallback) {
@@ -364,6 +419,9 @@ void SendFilesBox::initSendWay() {
 	) | rpl::start_with_next([=](SendFilesWay value) {
 		updateCaptionPlaceholder();
 		updateEmojiPanelGeometry();
+		for (auto &block : _blocks) {
+			block.setSendWay(value);
+		}
 		setInnerFocus();
 	}, lifetime());
 }
@@ -389,73 +447,59 @@ void SendFilesBox::updateCaptionPlaceholder() {
 }
 
 void SendFilesBox::preparePreview() {
+	generatePreviewFrom(0);
+}
+
+void SendFilesBox::generatePreviewFrom(int fromBlock) {
+	Expects(fromBlock <= _blocks.size());
+
 	using Type = Ui::PreparedFile::AlbumType;
 
-	_blocks.clear();
+	_blocks.erase(_blocks.begin() + fromBlock, _blocks.end());
+
+	const auto fromItem = _blocks.empty() ? 0 : _blocks.back().tillIndex();
+	Assert(fromItem <= _list.files.size());
+
 	auto albumStart = -1;
-	const auto finishAlbum = [&](int till) {
-		if (albumStart < 0) {
-			return;
-		}
-		const auto count = (till - albumStart);
-		const auto preview = _inner->add(object_ptr<Ui::AlbumPreview>(
-			this,
-			gsl::make_span(_list.files).subspan(albumStart, count),
-			_sendWay.current()));
-
-		auto &block = _blocks.emplace_back();
-		block.fromIndex = albumStart;
-		block.tillIndex = albumStart + count;
-		block.preview.reset(preview);
-		block.preview->show();
-
-		_sendWay.changes(
-		) | rpl::start_with_next([=](SendFilesWay value) {
-			applyAlbumOrder(preview, albumStart);
-			preview->setSendWay(value);
-		}, preview->lifetime());
-
-		albumStart = -1;
+	const auto gifPaused = [controller = _controller] {
+		return controller->isGifPausedAtLeastFor(
+			Window::GifPauseReason::Layer);
 	};
-	const auto finishSingle = [&](int index) {
-		const auto &file = _list.files[index];
-		const auto controller = _controller;
-		auto &block = _blocks.emplace_back();
-		block.fromIndex = index;
-		block.tillIndex = index + 1;
-		const auto media = Ui::SingleMediaPreview::Create(this, [=] {
-			return controller->isGifPausedAtLeastFor(
-				Window::GifPauseReason::Layer);
-		}, file);
-		if (media) {
-			block.preview.reset(
-				_inner->add(object_ptr<Ui::SingleMediaPreview>::fromRaw(
-					media)));
-		} else {
-			block.preview.reset(
-				_inner->add(object_ptr<Ui::SingleFilePreview>(this, file)));
-		}
-		block.preview->show();
+	const auto pushBlock = [&](int from, int till) {
+		_blocks.emplace_back(
+			_inner.data(),
+			&_list.files,
+			from,
+			till,
+			gifPaused,
+			_sendWay.current());
+		_inner->add(_blocks.back().takeWidget());
 	};
-	for (auto i = 0, count = int(_list.files.size()); i != count; ++i) {
+	for (auto i = fromItem, till = int(_list.files.size()); i != till; ++i) {
 		const auto type = _list.files[i].type;
 		if (albumStart >= 0) {
 			const auto albumCount = (i - albumStart);
-			if (type == Type::File || (albumCount == Ui::MaxAlbumItems())) {
-				finishAlbum(i);
+			if ((type == Type::File)
+				|| (type == Type::None)
+				|| (albumCount == Ui::MaxAlbumItems())) {
+				pushBlock(std::exchange(albumStart, -1), i);
 			} else {
 				continue;
 			}
 		}
-		if (type != Type::File) {
+		if (type != Type::File && type != Type::None) {
 			if (albumStart < 0) {
 				albumStart = i;
 			}
 			continue;
 		}
-		finishSingle(i);
+		pushBlock(i, i + 1);
 	}
-	finishAlbum(_list.files.size());
+	if (albumStart >= 0) {
+		pushBlock(albumStart, _list.files.size());
+	}
+
+	_scroll->scrollToY(0);
 }
 
 void SendFilesBox::setupControls() {
@@ -520,32 +564,6 @@ void SendFilesBox::updateSendWayControlsVisibility() {
 	_groupFiles->setVisible(!onlyOne);
 }
 
-void SendFilesBox::applyAlbumOrder(
-		not_null<Ui::AlbumPreview*> preview,
-		int from) {
-	const auto order = preview->takeOrder();
-	const auto isDefault = [&] {
-		for (auto i = 0, count = int(order.size()); i != count; ++i) {
-			if (order[i] != i) {
-				return false;
-			}
-		}
-		return true;
-	}();
-	if (isDefault) {
-		return;
-	}
-
-	auto elements = std::vector<Ui::PreparedFile>();
-	elements.reserve(order.size());
-	for (const auto index : order) {
-		elements.push_back(std::move(_list.files[from + index]));
-	}
-	for (auto i = 0, count = int(order.size()); i != count; ++i) {
-		_list.files[from + i] = std::move(elements[i]);
-	}
-}
-
 void SendFilesBox::setupCaption() {
 	_caption->setMaxLength(
 		_controller->session().serverConfig().captionLengthMax);
@@ -854,7 +872,9 @@ void SendFilesBox::send(
 		Core::App().saveSettingsDelayed();
 	}
 
-	//applyAlbumOrder(); // #TODO files
+	for (auto &block : _blocks) {
+		block.applyAlbumOrder();
+	}
 	_confirmed = true;
 	if (_confirmedCallback) {
 		auto caption = (_caption && !_caption->isHidden())
diff --git a/Telegram/SourceFiles/boxes/send_files_box.h b/Telegram/SourceFiles/boxes/send_files_box.h
index 00f0626e8a..b2df787527 100644
--- a/Telegram/SourceFiles/boxes/send_files_box.h
+++ b/Telegram/SourceFiles/boxes/send_files_box.h
@@ -84,10 +84,32 @@ protected:
 	void resizeEvent(QResizeEvent *e) override;
 
 private:
-	struct Block {
-		base::unique_qptr<Ui::RpWidget> preview;
-		int fromIndex = 0;
-		int tillIndex = 0;
+	class Block final {
+	public:
+		Block(
+			not_null<QWidget*> parent,
+			not_null<std::vector<Ui::PreparedFile>*> items,
+			int from,
+			int till,
+			Fn<bool()> gifPaused,
+			Ui::SendFilesWay way);
+		Block(Block &&other) = default;
+		Block &operator=(Block &&other) = default;
+
+		[[nodiscard]] int fromIndex() const;
+		[[nodiscard]] int tillIndex() const;
+		[[nodiscard]] object_ptr<Ui::RpWidget> takeWidget();
+
+		void setSendWay(Ui::SendFilesWay way);
+		void applyAlbumOrder();
+
+	private:
+		base::unique_qptr<Ui::RpWidget> _preview;
+		not_null<std::vector<Ui::PreparedFile>*> _items;
+		int _from = 0;
+		int _till = 0;
+		bool _isAlbum = false;
+
 	};
 	void initSendWay();
 	void initPreview();
@@ -95,9 +117,7 @@ private:
 	void setupControls();
 	void setupSendWayControls();
 	void setupCaption();
-	void setupShadows(
-		not_null<Ui::ScrollArea*> wrap,
-		not_null<Ui::AlbumPreview*> content);
+	void setupShadows();
 
 	void setupEmojiPanel();
 	void updateSendWayControlsVisibility();
@@ -105,7 +125,7 @@ private:
 	void emojiFilterForGeometry(not_null<QEvent*> event);
 
 	void preparePreview();
-	void applyAlbumOrder(not_null<Ui::AlbumPreview*> preview, int from);
+	void generatePreviewFrom(int fromBlock);
 
 	void send(Api::SendOptions options, bool ctrlShiftEnter = false);
 	void sendSilent();
diff --git a/Telegram/SourceFiles/storage/storage_media_prepare.cpp b/Telegram/SourceFiles/storage/storage_media_prepare.cpp
index aa9535964f..b0cc66abf4 100644
--- a/Telegram/SourceFiles/storage/storage_media_prepare.cpp
+++ b/Telegram/SourceFiles/storage/storage_media_prepare.cpp
@@ -97,6 +97,8 @@ bool PrepareDetailsIsWaiting(
 				Assert(!file.preview.isNull());
 				file.preview.setDevicePixelRatio(cRetinaFactor());
 				file.type = PreparedFile::AlbumType::Photo;
+			} else if (Core::IsMimeSticker(file.mime)) {
+				file.type = PreparedFile::AlbumType::None;
 			}
 		} else if (const auto video = std::get_if<Video>(
 				&file.information->media)) {
@@ -257,7 +259,7 @@ PreparedList PrepareMediaFromImage(
 		QImage &&image,
 		QByteArray &&content,
 		int previewWidth) {
-	auto result = Storage::PreparedList();
+	auto result = PreparedList();
 	auto file = PreparedFile(QString());
 	file.content = content;
 	if (file.content.isEmpty()) {
@@ -283,7 +285,7 @@ std::optional<PreparedList> PreparedFileFromFilesDialog(
 	}
 
 	if (!result.remoteContent.isEmpty()) {
-		auto list = Storage::PrepareMediaFromImage(
+		auto list = PrepareMediaFromImage(
 			QImage(),
 			std::move(result.remoteContent),
 			previewWidth);
@@ -297,7 +299,8 @@ std::optional<PreparedList> PreparedFileFromFilesDialog(
 		if (isAlbum) {
 			const auto file = &list.files.front();
 			if (!Core::IsMimeAcceptedForAlbum(mimeFile)
-				|| file->type == Storage::PreparedFile::AlbumType::File) {
+				|| file->type == PreparedFile::AlbumType::File
+				|| file->type == PreparedFile::AlbumType::File) {
 				errorCallback(tr::lng_edit_media_album_error);
 				return std::nullopt;
 			}
@@ -306,7 +309,7 @@ std::optional<PreparedList> PreparedFileFromFilesDialog(
 		return list;
 	} else if (!result.paths.isEmpty()) {
 		const auto isSingleFile = (result.paths.size() == 1);
-		auto temp = Storage::PrepareMediaList(result.paths, previewWidth);
+		auto temp = PrepareMediaList(result.paths, previewWidth);
 		if (temp.error != PreparedList::Error::None) {
 			errorCallback(tr::lng_send_media_invalid_files);
 			return std::nullopt;
diff --git a/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.cpp b/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.cpp
index af6b665266..fb67a6d15c 100644
--- a/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.cpp
+++ b/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.cpp
@@ -22,13 +22,12 @@ constexpr auto kDragDuration = crl::time(200);
 
 AlbumPreview::AlbumPreview(
 	QWidget *parent,
-	gsl::span<PreparedFile> list,
+	gsl::span<Ui::PreparedFile> items,
 	SendFilesWay way)
 : RpWidget(parent)
-, _list(list)
 , _sendWay(way) {
 	setMouseTracking(true);
-	prepareThumbs();
+	prepareThumbs(items);
 	updateSize();
 	updateFileRows();
 }
@@ -55,25 +54,26 @@ void AlbumPreview::updateFileRows() {
 }
 
 std::vector<int> AlbumPreview::takeOrder() {
+	Expects(_thumbs.size() == _order.size());
+	Expects(_itemsShownDimensions.size() == _order.size());
+
 	auto reordered = std::vector<std::unique_ptr<AlbumThumbnail>>();
+	auto reorderedShownDimensions = std::vector<QSize>();
 	reordered.reserve(_thumbs.size());
+	reorderedShownDimensions.reserve(_itemsShownDimensions.size());
 	for (auto index : _order) {
 		reordered.push_back(std::move(_thumbs[index]));
+		reorderedShownDimensions.push_back(_itemsShownDimensions[index]);
 	}
 	_thumbs = std::move(reordered);
+	_itemsShownDimensions = std::move(reorderedShownDimensions);
 	return std::exchange(_order, defaultOrder());
 }
 
 auto AlbumPreview::generateOrderedLayout() const
 -> std::vector<GroupMediaLayout> {
-	auto sizes = ranges::view::all(
-		_order
-	) | ranges::view::transform([&](int index) {
-		return _list[index].shownDimensions;
-	}) | ranges::to_vector;
-
 	auto layout = LayoutMediaGroup(
-		sizes,
+		_itemsShownDimensions,
 		st::sendMediaPreviewSize,
 		st::historyGroupWidthMin / 2,
 		st::historyGroupSkip / 2);
@@ -81,20 +81,29 @@ auto AlbumPreview::generateOrderedLayout() const
 	return layout;
 }
 
-std::vector<int> AlbumPreview::defaultOrder() const {
-	const auto count = int(_list.size());
+std::vector<int> AlbumPreview::defaultOrder(int count) const {
+	Expects(count > 0 || !_order.empty());
+
+	if (count < 0) {
+		count = _order.size();
+	}
 	return ranges::view::ints(0, count) | ranges::to_vector;
 }
 
-void AlbumPreview::prepareThumbs() {
-	_order = defaultOrder();
+void AlbumPreview::prepareThumbs(gsl::span<Ui::PreparedFile> items) {
+	_order = defaultOrder(items.size());
+	_itemsShownDimensions = ranges::view::all(
+		_order
+	) | ranges::view::transform([&](int index) {
+		return items[index].shownDimensions;
+	}) | ranges::to_vector;
 
-	const auto count = int(_list.size());
+	const auto count = int(_order.size());
 	const auto layout = generateOrderedLayout();
 	_thumbs.reserve(count);
 	for (auto i = 0; i != count; ++i) {
 		_thumbs.push_back(std::make_unique<AlbumThumbnail>(
-			_list[i],
+			items[i],
 			layout[i],
 			this,
 			[=] { changeThumbByIndex(thumbIndex(thumbUnderCursor())); },
diff --git a/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.h b/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.h
index fad5a80db7..6918c2ef67 100644
--- a/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.h
+++ b/Telegram/SourceFiles/ui/chat/attach/attach_album_preview.h
@@ -20,7 +20,7 @@ class AlbumPreview final : public RpWidget {
 public:
 	AlbumPreview(
 		QWidget *parent,
-		gsl::span<PreparedFile> list,
+		gsl::span<Ui::PreparedFile> items,
 		SendFilesWay way);
 	~AlbumPreview();
 
@@ -45,8 +45,8 @@ private:
 	int countLayoutHeight(
 		const std::vector<GroupMediaLayout> &layout) const;
 	std::vector<GroupMediaLayout> generateOrderedLayout() const;
-	std::vector<int> defaultOrder() const;
-	void prepareThumbs();
+	std::vector<int> defaultOrder(int count = -1) const;
+	void prepareThumbs(gsl::span<Ui::PreparedFile> items);
 	void updateSizeAnimated(const std::vector<GroupMediaLayout> &layout);
 	void updateSize();
 	void updateFileRows();
@@ -73,10 +73,10 @@ private:
 	void cancelDrag();
 	void finishDrag();
 
-	gsl::span<PreparedFile> _list;
 	SendFilesWay _sendWay;
 	style::cursor _cursor = style::cur_default;
 	std::vector<int> _order;
+	std::vector<QSize> _itemsShownDimensions;
 	std::vector<std::unique_ptr<AlbumThumbnail>> _thumbs;
 	int _thumbsHeight = 0;
 	int _photosHeight = 0;
diff --git a/Telegram/SourceFiles/ui/chat/attach/attach_album_thumbnail.cpp b/Telegram/SourceFiles/ui/chat/attach/attach_album_thumbnail.cpp
index 6b26181405..6f7d80381a 100644
--- a/Telegram/SourceFiles/ui/chat/attach/attach_album_thumbnail.cpp
+++ b/Telegram/SourceFiles/ui/chat/attach/attach_album_thumbnail.cpp
@@ -127,12 +127,12 @@ void AlbumThumbnail::updateFileRow(int row) {
 	const auto fileHeight = st::sendMediaFileThumbSize
 		+ st::sendMediaFileThumbSkip;
 
-	const auto top = row * fileHeight + st::sendBoxAlbumGroupSkipTop;
+	const auto top = row * fileHeight + st::sendBoxFileGroupSkipTop;
 	const auto size = st::editMediaButtonSize;
 
-	auto right = st::sendBoxAlbumGroupSkipRight + size;
+	auto right = st::sendBoxFileGroupSkipRight + size;
 	_deleteMedia->moveToRight(right, top);
-	right += st::sendBoxAlbumGroupEditInternalSkip + size;
+	right += st::sendBoxFileGroupEditInternalSkip + size;
 	_editMedia->moveToRight(right, top);
 }
 
diff --git a/Telegram/SourceFiles/ui/chat/attach/attach_prepare.cpp b/Telegram/SourceFiles/ui/chat/attach/attach_prepare.cpp
index 07d23def10..6dd18d7355 100644
--- a/Telegram/SourceFiles/ui/chat/attach/attach_prepare.cpp
+++ b/Telegram/SourceFiles/ui/chat/attach/attach_prepare.cpp
@@ -68,6 +68,10 @@ bool PreparedList::canBeSentInSlowmode() const {
 		return false;
 	}
 
+	const auto hasNonGrouping = ranges::contains(
+		files,
+		PreparedFile::AlbumType::None,
+		&PreparedFile::type);
 	const auto hasFiles = ranges::contains(
 		files,
 		PreparedFile::AlbumType::File,
@@ -78,7 +82,7 @@ bool PreparedList::canBeSentInSlowmode() const {
 		&PreparedFile::type);
 
 	// File-s and Video-s never can be grouped.
-	return !hasFiles || !hasVideos;
+	return !hasNonGrouping && (!hasFiles || !hasVideos);
 }
 
 bool PreparedList::canAddCaption(bool groupMediaInAlbums) const {
diff --git a/Telegram/SourceFiles/ui/chat/attach/attach_prepare.h b/Telegram/SourceFiles/ui/chat/attach/attach_prepare.h
index a7a64dd51a..d73c5fd8d9 100644
--- a/Telegram/SourceFiles/ui/chat/attach/attach_prepare.h
+++ b/Telegram/SourceFiles/ui/chat/attach/attach_prepare.h
@@ -46,6 +46,7 @@ struct PreparedFile {
 		File,
 		Photo,
 		Video,
+		None,
 	};
 
 	PreparedFile(const QString &path);