Implement forwarding to topics.

Telegram/CMakeLists.txt

@@ -113,6 +113,7 @@ PRIVATE
     api/api_chat_participants.h
     api/api_cloud_password.cpp
     api/api_cloud_password.h
+    api/api_common.cpp
     api/api_common.h
     api/api_confirm_phone.cpp
     api/api_confirm_phone.h
@@ -625,6 +626,8 @@ PRIVATE
     history/view/controls/history_view_compose_controls.h
     history/view/controls/history_view_compose_search.cpp
     history/view/controls/history_view_compose_search.h
+    history/view/controls/history_view_forward_panel.cpp
+    history/view/controls/history_view_forward_panel.h
     history/view/controls/history_view_ttl_button.cpp
     history/view/controls/history_view_ttl_button.h
     history/view/controls/history_view_voice_record_bar.cpp

Telegram/SourceFiles/api/api_common.cpp

@@ -0,0 +1,22 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_common.h"
+
+#include "data/data_thread.h"
+
+namespace Api {
+
+SendAction::SendAction(
+	not_null<Data::Thread*> thread,
+	SendOptions options)
+: history(thread->owningHistory())
+, options(options)
+, topicRootId(thread->topicRootId()) {
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_common.h

@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 class History;
 
+namespace Data {
+class Thread;
+} // namespace Data
+
 namespace Api {
 
 struct SendOptions {
@@ -28,11 +32,8 @@ enum class SendType {
 
 struct SendAction {
 	explicit SendAction(
-		not_null<History*> history,
-		SendOptions options = SendOptions())
-	: history(history)
-	, options(options) {
-	}
+		not_null<Data::Thread*> thread,
+		SendOptions options = SendOptions());
 
 	not_null<History*> history;
 	SendOptions options;

Telegram/SourceFiles/apiwrap.cpp

@@ -3049,7 +3049,7 @@ void ApiWrap::sendAction(const SendAction &action) {
 
 void ApiWrap::finishForwarding(const SendAction &action) {
 	const auto history = action.history;
-	auto toForward = history->resolveForwardDraft();
+	auto toForward = history->resolveForwardDraft(action.topicRootId);
 	if (!toForward.items.empty()) {
 		const auto error = GetErrorTextForSending(
 			history->peer,
@@ -3062,7 +3062,7 @@ void ApiWrap::finishForwarding(const SendAction &action) {
 		}
 
 		forwardMessages(std::move(toForward), action);
-		_session->data().cancelForwarding(history);
+		history->setForwardDraft(action.topicRootId, {});
 	}
 
 	_session->data().sendHistoryChangeNotifications();
@@ -3199,7 +3199,8 @@ void ApiWrap::forwardMessages(
 				HistoryItem::NewMessageDate(action.options.scheduled),
 				messageFromId,
 				messagePostAuthor,
-				item); // #TODO forum forward
+				item,
+				action.topicRootId); // #TODO forum forward
 			_session->data().registerMessageRandomId(randomId, newId);
 			if (!localIds) {
 				localIds = std::make_shared<base::flat_map<uint64, FullMsgId>>();

Telegram/SourceFiles/boxes/peer_list_box.cpp

@@ -331,6 +331,14 @@ void PeerListController::peerListSearchAddRow(not_null<PeerData*> peer) {
 	}
 }
 
+void PeerListController::peerListSearchAddRow(PeerListRowId id) {
+	if (auto row = delegate()->peerListFindRow(id)) {
+		delegate()->peerListAppendFoundRow(row);
+	} else if (auto row = createSearchRow(id)) {
+		delegate()->peerListAppendSearchRow(std::move(row));
+	}
+}
+
 void PeerListController::peerListSearchRefreshRows() {
 	delegate()->peerListRefreshRows();
 }
@@ -359,7 +367,8 @@ void PeerListController::setSearchNoResultsText(const QString &text) {
 	if (text.isEmpty()) {
 		setSearchNoResults(nullptr);
 	} else {
-		setSearchNoResults(object_ptr<Ui::FlatLabel>(nullptr, text, st::membersAbout));
+		setSearchNoResults(
+			object_ptr<Ui::FlatLabel>(nullptr, text, st::membersAbout));
 	}
 }
 
@@ -369,6 +378,14 @@ base::unique_qptr<Ui::PopupMenu> PeerListController::rowContextMenu(
 	return nullptr;
 }
 
+std::unique_ptr<PeerListRow> PeerListController::createSearchRow(
+		PeerListRowId id) {
+	if (const auto peer = session().data().peerLoaded(PeerId(id))) {
+		return createSearchRow(peer);
+	}
+	return nullptr;
+}
+
 std::unique_ptr<PeerListState> PeerListController::saveState() const {
 	return delegate()->peerListSaveState();
 }
@@ -648,6 +665,18 @@ PaintRoundImageCallback PeerListRow::generatePaintUserpicCallback() {
 	};
 }
 
+
+auto PeerListRow::generateNameFirstLetters() const
+-> const base::flat_set<QChar> & {
+	return peer()->nameFirstLetters();
+}
+
+auto PeerListRow::generateNameWords() const
+-> const base::flat_set<QString> & {
+	return peer()->nameWords();
+}
+
+
 void PeerListRow::invalidatePixmapsCache() {
 	if (_checkbox) {
 		_checkbox->invalidateCache();
@@ -983,12 +1012,12 @@ bool PeerListContent::addingToSearchIndex() const {
 }
 
 void PeerListContent::addToSearchIndex(not_null<PeerListRow*> row) {
-	if (row->isSearchResult() || row->special()) {
+	if (row->isSearchResult()) {
 		return;
 	}
 
 	removeFromSearchIndex(row);
-	row->setNameFirstLetters(row->peer()->nameFirstLetters());
+	row->setNameFirstLetters(row->generateNameFirstLetters());
 	for (auto ch : row->nameFirstLetters()) {
 		_searchIndex[ch].push_back(row);
 	}
@@ -1813,9 +1842,9 @@ void PeerListContent::searchQueryChanged(QString query) {
 			}
 			if (minimalList) {
 				auto searchWordInNames = [](
-						not_null<PeerData*> peer,
+						not_null<PeerListRow*> row,
 						const QString &searchWord) {
-					for (auto &nameWord : peer->nameWords()) {
+					for (auto &nameWord : row->generateNameWords()) {
 						if (nameWord.startsWith(searchWord)) {
 							return true;
 						}
@@ -1823,9 +1852,9 @@ void PeerListContent::searchQueryChanged(QString query) {
 					return false;
 				};
 				auto allSearchWordsInNames = [&](
-						not_null<PeerData*> peer) {
+						not_null<PeerListRow*> row) {
 					for (const auto &searchWord : searchWordsList) {
-						if (!searchWordInNames(peer, searchWord)) {
+						if (!searchWordInNames(row, searchWord)) {
 							return false;
 						}
 					}
@@ -1834,7 +1863,7 @@ void PeerListContent::searchQueryChanged(QString query) {
 
 				_filterResults.reserve(minimalList->size());
 				for (const auto &row : *minimalList) {
-					if (!row->special() && allSearchWordsInNames(row->peer())) {
+					if (allSearchWordsInNames(row)) {
 						_filterResults.push_back(row);
 					}
 				}

Telegram/SourceFiles/boxes/peer_list_box.h

@@ -91,6 +91,11 @@ public:
 	[[nodiscard]] virtual auto generatePaintUserpicCallback()
 		-> PaintRoundImageCallback;
 
+	[[nodiscard]] virtual auto generateNameFirstLetters() const
+		-> const base::flat_set<QChar> &;
+	[[nodiscard]] virtual auto generateNameWords() const
+		-> const base::flat_set<QString> &;
+
 	void setCustomStatus(const QString &status, bool active = false);
 	void clearCustomStatus();
 
@@ -360,6 +365,7 @@ private:
 class PeerListSearchDelegate {
 public:
 	virtual void peerListSearchAddRow(not_null<PeerData*> peer) = 0;
+	virtual void peerListSearchAddRow(PeerListRowId id) = 0;
 	virtual void peerListSearchRefreshRows() = 0;
 	virtual ~PeerListSearchDelegate() = default;
 
@@ -470,6 +476,7 @@ public:
 			not_null<PeerData*> peer) {
 		return nullptr;
 	}
+	virtual std::unique_ptr<PeerListRow> createSearchRow(PeerListRowId id);
 	virtual std::unique_ptr<PeerListRow> createRestoredRow(
 			not_null<PeerData*> peer) {
 		return nullptr;
@@ -494,6 +501,7 @@ public:
 	void search(const QString &query);
 
 	void peerListSearchAddRow(not_null<PeerData*> peer) override;
+	void peerListSearchAddRow(PeerListRowId id) override;
 	void peerListSearchRefreshRows() override;
 
 	[[nodiscard]] virtual bool respectSavedMessagesChat() const {

Telegram/SourceFiles/boxes/peer_list_controllers.cpp

@@ -18,55 +18,33 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_channel.h"
 #include "data/data_chat.h"
 #include "data/data_user.h"
+#include "data/data_forum.h"
+#include "data/data_forum_topic.h"
 #include "data/data_folder.h"
 #include "data/data_histories.h"
 #include "data/data_changes.h"
+#include "dialogs/ui/dialogs_layout.h"
 #include "apiwrap.h"
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "lang/lang_keys.h"
 #include "history/history.h"
+#include "history/history_item.h"
 #include "dialogs/dialogs_main_list.h"
 #include "window/window_session_controller.h" // showAddContact()
 #include "base/unixtime.h"
 #include "facades.h"
 #include "styles/style_boxes.h"
 #include "styles/style_profile.h"
+#include "styles/style_dialogs.h"
 
 namespace {
 
 constexpr auto kSortByOnlineThrottle = 3 * crl::time(1000);
+constexpr auto kSearchPerPage = 50;
 
 } // namespace
 
-// Not used for now.
-//
-//MembersAddButton::MembersAddButton(QWidget *parent, const style::TwoIconButton &st) : RippleButton(parent, st.ripple)
-//, _st(st) {
-//	resize(_st.width, _st.height);
-//	setCursor(style::cur_pointer);
-//}
-//
-//void MembersAddButton::paintEvent(QPaintEvent *e) {
-//	Painter p(this);
-//
-//	auto ms = crl::now();
-//	auto over = isOver();
-//	auto down = isDown();
-//
-//	((over || down) ? _st.iconBelowOver : _st.iconBelow).paint(p, _st.iconPosition, width());
-//	paintRipple(p, _st.rippleAreaPosition.x(), _st.rippleAreaPosition.y(), ms);
-//	((over || down) ? _st.iconAboveOver : _st.iconAbove).paint(p, _st.iconPosition, width());
-//}
-//
-//QImage MembersAddButton::prepareRippleMask() const {
-//	return Ui::RippleAnimation::EllipseMask(QSize(_st.rippleAreaSize, _st.rippleAreaSize));
-//}
-//
-//QPoint MembersAddButton::prepareRippleStartPosition() const {
-//	return mapFromGlobal(QCursor::pos()) - _st.rippleAreaPosition;
-//}
-
 object_ptr<Ui::BoxContent> PrepareContactsBox(
 		not_null<Window::SessionController*> sessionController) {
 	using Mode = ContactsBoxController::SortMode;
@@ -314,7 +292,8 @@ QString ChatsListBoxController::emptyBoxText() const {
 	return tr::lng_contacts_not_found(tr::now);
 }
 
-std::unique_ptr<PeerListRow> ChatsListBoxController::createSearchRow(not_null<PeerData*> peer) {
+std::unique_ptr<PeerListRow> ChatsListBoxController::createSearchRow(
+		not_null<PeerData*> peer) {
 	return createRow(peer->owner().history(peer));
 }
 
@@ -481,8 +460,8 @@ std::unique_ptr<PeerListRow> ContactsBoxController::createRow(
 
 ChooseRecipientBoxController::ChooseRecipientBoxController(
 	not_null<Main::Session*> session,
-	FnMut<void(not_null<PeerData*>)> callback,
-	Fn<bool(not_null<PeerData*>)> filter)
+	FnMut<void(not_null<Data::Thread*>)> callback,
+	Fn<bool(not_null<Data::Thread*>)> filter)
 : ChatsListBoxController(session)
 , _session(session)
 , _callback(std::move(callback))
@@ -498,10 +477,48 @@ void ChooseRecipientBoxController::prepareViewHook() {
 }
 
 void ChooseRecipientBoxController::rowClicked(not_null<PeerListRow*> row) {
-	auto weak = base::make_weak(this);
+	auto guard = base::make_weak(this);
+	const auto peer = row->peer();
+	if (const auto forum = peer->forum()) {
+		const auto weak = std::make_shared<QPointer<Ui::BoxContent>>();
+		auto callback = [=](not_null<Data::ForumTopic*> topic) {
+			const auto exists = guard.get();
+			if (!exists) {
+				if (*weak) {
+					(*weak)->closeBox();
+				}
+				return;
+			}
+			auto onstack = std::move(_callback);
+			onstack(topic);
+			if (guard) {
+				_callback = std::move(onstack);
+			} else if (*weak) {
+				(*weak)->closeBox();
+			}
+		};
+		auto owned = Box<PeerListBox>(
+			std::make_unique<ChooseTopicBoxController>(
+				forum,
+				std::move(callback)),
+			[=](not_null<PeerListBox*> box) {
+			box->addButton(tr::lng_cancel(), [=] {
+				box->closeBox();
+			});
+
+			forum->destroyed(
+			) | rpl::start_with_next([=] {
+				box->closeBox();
+			}, box->lifetime());
+		});
+		*weak = owned.data();
+		delegate()->peerListShowBox(std::move(owned));
+		return;
+	}
+	const auto history = peer->owner().history(peer);
 	auto callback = std::move(_callback);
-	callback(row->peer());
-	if (weak) {
+	callback(history);
+	if (guard) {
 		_callback = std::move(callback);
 	}
 }
@@ -510,8 +527,205 @@ auto ChooseRecipientBoxController::createRow(
 		not_null<History*> history) -> std::unique_ptr<Row> {
 	const auto peer = history->peer;
 	const auto skip = _filter
-		? !_filter(peer)
+		? !_filter(history)
 		: ((peer->isBroadcast() && !peer->canWrite())
 			|| peer->isRepliesChat());
 	return skip ? nullptr : std::make_unique<Row>(history);
 }
+
+ChooseTopicSearchController::ChooseTopicSearchController(
+	not_null<Data::Forum*> forum)
+: _forum(forum)
+, _api(&forum->session().mtp())
+, _timer([=] { searchOnServer(); }) {
+}
+
+void ChooseTopicSearchController::searchQuery(const QString &query) {
+	if (_query != query) {
+		_query = query;
+		_api.request(base::take(_requestId)).cancel();
+		_offsetDate = 0;
+		_offsetId = 0;
+		_offsetTopicId = 0;
+		_allLoaded = false;
+		if (!_query.isEmpty()) {
+			_timer.callOnce(AutoSearchTimeout);
+		} else {
+			_timer.cancel();
+		}
+	}
+}
+
+void ChooseTopicSearchController::searchOnServer() {
+	_requestId = _api.request(MTPchannels_GetForumTopics(
+		MTP_flags(MTPchannels_GetForumTopics::Flag::f_q),
+		_forum->channel()->inputChannel,
+		MTP_string(_query),
+		MTP_int(_offsetDate),
+		MTP_int(_offsetId),
+		MTP_int(_offsetTopicId),
+		MTP_int(kSearchPerPage)
+	)).done([=](const MTPmessages_ForumTopics &result) {
+		_requestId = 0;
+		const auto savedTopicId = _offsetTopicId;
+		const auto byCreation = result.data().is_order_by_create_date();
+		_forum->applyReceivedTopics(result, [&](
+				not_null<Data::ForumTopic*> topic) {
+			_offsetTopicId = topic->rootId();
+			if (byCreation) {
+				_offsetDate = topic->creationDate();
+				if (const auto last = topic->lastServerMessage()) {
+					_offsetId = last->id;
+				}
+			} else if (const auto last = topic->lastServerMessage()) {
+				_offsetId = last->id;
+				_offsetDate = last->date();
+			}
+			delegate()->peerListSearchAddRow(topic->rootId().bare);
+		});
+		if (_offsetTopicId != savedTopicId) {
+			delegate()->peerListSearchRefreshRows();
+		} else {
+			_allLoaded = true;
+		}
+	}).fail([=] {
+		_allLoaded = true;
+	}).send();
+}
+
+bool ChooseTopicSearchController::isLoading() {
+	return _timer.isActive() || _requestId;
+}
+
+bool ChooseTopicSearchController::loadMoreRows() {
+	if (!isLoading()) {
+		searchOnServer();
+	}
+	return !_allLoaded;
+}
+
+ChooseTopicBoxController::ChooseTopicBoxController(
+	not_null<Data::Forum*> forum,
+	FnMut<void(not_null<Data::ForumTopic*>)> callback,
+	Fn<bool(not_null<Data::ForumTopic*>)> filter)
+: PeerListController(std::make_unique<ChooseTopicSearchController>(forum))
+, _forum(forum)
+, _callback(std::move(callback))
+, _filter(std::move(filter)) {
+	setStyleOverrides(&st::chooseTopicList);
+
+	_forum->chatsListChanges(
+	) | rpl::start_with_next([=] {
+		refreshRows();
+	}, lifetime());
+
+	_forum->topicDestroyed(
+	) | rpl::start_with_next([=](not_null<Data::ForumTopic*> topic) {
+		const auto id = PeerListRowId(topic->rootId().bare);
+		if (const auto row = delegate()->peerListFindRow(id)) {
+			delegate()->peerListRemoveRow(row);
+			delegate()->peerListRefreshRows();
+		}
+	}, lifetime());
+}
+
+Main::Session &ChooseTopicBoxController::session() const {
+	return _forum->session();
+}
+
+void ChooseTopicBoxController::rowClicked(not_null<PeerListRow*> row) {
+	const auto weak = base::make_weak(this);
+	auto onstack = base::take(_callback);
+	onstack(static_cast<Row*>(row.get())->topic());
+	if (weak) {
+		_callback = std::move(onstack);
+	}
+}
+
+void ChooseTopicBoxController::prepare() {
+	delegate()->peerListSetTitle(tr::lng_forward_choose());
+	setSearchNoResultsText(tr::lng_blocked_list_not_found(tr::now));
+	delegate()->peerListSetSearchMode(PeerListSearchMode::Enabled);
+	refreshRows(true);
+}
+
+void ChooseTopicBoxController::refreshRows(bool initial) {
+	auto added = false;
+	for (const auto &row : _forum->topicsList()->indexed()->all()) {
+		if (const auto topic = row->topic()) {
+			const auto id = topic->rootId().bare;
+			auto already = delegate()->peerListFindRow(id);
+			if (initial || !already) {
+				delegate()->peerListAppendRow(createRow(topic));
+				added = true;
+			} else if (already->isSearchResult()) {
+				delegate()->peerListAppendFoundRow(already);
+				added = true;
+			}
+		}
+	}
+	if (added) {
+		delegate()->peerListRefreshRows();
+	}
+}
+
+void ChooseTopicBoxController::loadMoreRows() {
+	_forum->requestTopics();
+}
+
+std::unique_ptr<PeerListRow> ChooseTopicBoxController::createSearchRow(
+		PeerListRowId id) {
+	if (const auto topic = _forum->topicFor(MsgId(id))) {
+		return std::make_unique<Row>(topic);
+	}
+	return nullptr;
+}
+
+ChooseTopicBoxController::Row::Row(not_null<Data::ForumTopic*> topic)
+: PeerListRow(topic->rootId().bare)
+, _topic(topic) {
+}
+
+QString ChooseTopicBoxController::Row::generateName() {
+	return _topic->title();
+}
+
+QString ChooseTopicBoxController::Row::generateShortName() {
+	return _topic->title();
+}
+
+auto ChooseTopicBoxController::Row::generatePaintUserpicCallback()
+-> PaintRoundImageCallback {
+	return [=](
+			Painter &p,
+			int x,
+			int y,
+			int outerWidth,
+			int size) {
+		auto view = std::shared_ptr<Data::CloudImageView>();
+		p.translate(x, y);
+		_topic->paintUserpic(p, view, {
+			.st = &st::forumTopicRow,
+			.now = crl::now(),
+			.width = outerWidth,
+			.paused = false,
+		});
+		p.translate(-x, -y);
+	};
+}
+
+auto ChooseTopicBoxController::Row::generateNameFirstLetters() const
+-> const base::flat_set<QChar> & {
+	return _topic->chatListFirstLetters();
+}
+
+auto ChooseTopicBoxController::Row::generateNameWords() const
+-> const base::flat_set<QString> & {
+	return _topic->chatListNameWords();
+}
+
+auto ChooseTopicBoxController::createRow(not_null<Data::ForumTopic*> topic)
+-> std::unique_ptr<Row> {
+	const auto skip = _filter ? !_filter(topic) : !topic->canWrite();
+	return skip ? nullptr : std::make_unique<Row>(topic);
+};

Telegram/SourceFiles/boxes/peer_list_controllers.h

@@ -12,25 +12,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/weak_ptr.h"
 #include "base/timer.h"
 
-// Not used for now.
-//
-//class MembersAddButton : public Ui::RippleButton {
-//public:
-//	MembersAddButton(QWidget *parent, const style::TwoIconButton &st);
-//
-//protected:
-//	void paintEvent(QPaintEvent *e) override;
-//
-//	QImage prepareRippleMask() const override;
-//	QPoint prepareRippleStartPosition() const override;
-//
-//private:
-//	const style::TwoIconButton &_st;
-//
-//};
-
 class History;
 
+namespace Data {
+class Thread;
+class Forum;
+class ForumTopic;
+} // namespace Data
+
 namespace Window {
 class SessionController;
 } // namespace Window
@@ -110,7 +99,8 @@ public:
 		std::unique_ptr<PeerListSearchController> searchController);
 
 	void prepare() override final;
-	std::unique_ptr<PeerListRow> createSearchRow(not_null<PeerData*> peer) override final;
+	std::unique_ptr<PeerListRow> createSearchRow(
+		not_null<PeerData*> peer) override final;
 
 protected:
 	virtual std::unique_ptr<Row> createRow(not_null<History*> history) = 0;
@@ -173,8 +163,8 @@ class ChooseRecipientBoxController
 public:
 	ChooseRecipientBoxController(
 		not_null<Main::Session*> session,
-		FnMut<void(not_null<PeerData*>)> callback,
-		Fn<bool(not_null<PeerData*>)> filter = nullptr);
+		FnMut<void(not_null<Data::Thread*>)> callback,
+		Fn<bool(not_null<Data::Thread*>)> filter = nullptr);
 
 	Main::Session &session() const override;
 	void rowClicked(not_null<PeerListRow*> row) override;
@@ -189,7 +179,80 @@ protected:
 
 private:
 	const not_null<Main::Session*> _session;
-	FnMut<void(not_null<PeerData*>)> _callback;
-	Fn<bool(not_null<PeerData*>)> _filter;
+	FnMut<void(not_null<Data::Thread*>)> _callback;
+	Fn<bool(not_null<Data::Thread*>)> _filter;
+
+};
+
+class ChooseTopicSearchController : public PeerListSearchController {
+public:
+	explicit ChooseTopicSearchController(not_null<Data::Forum*> forum);
+
+	void searchQuery(const QString &query) override;
+	bool isLoading() override;
+	bool loadMoreRows() override;
+
+private:
+	void searchOnServer();
+	void searchDone(const MTPcontacts_Found &result, mtpRequestId requestId);
+
+	const not_null<Data::Forum*> _forum;
+	MTP::Sender _api;
+	base::Timer _timer;
+	QString _query;
+	mtpRequestId _requestId = 0;
+	TimeId _offsetDate = 0;
+	MsgId _offsetId = 0;
+	MsgId _offsetTopicId = 0;
+	bool _allLoaded = false;
+
+};
+
+class ChooseTopicBoxController final
+	: public PeerListController
+	, public base::has_weak_ptr {
+public:
+	ChooseTopicBoxController(
+		not_null<Data::Forum*> forum,
+		FnMut<void(not_null<Data::ForumTopic*>)> callback,
+		Fn<bool(not_null<Data::ForumTopic*>)> filter = nullptr);
+
+	Main::Session &session() const override;
+	void rowClicked(not_null<PeerListRow*> row) override;
+
+	void prepare() override;
+	void loadMoreRows() override;
+	std::unique_ptr<PeerListRow> createSearchRow(PeerListRowId id) override;
+
+private:
+	class Row final : public PeerListRow {
+	public:
+		explicit Row(not_null<Data::ForumTopic*> topic);
+
+		[[nodiscard]] not_null<Data::ForumTopic*> topic() const {
+			return _topic;
+		}
+
+		QString generateName() override;
+		QString generateShortName() override;
+		PaintRoundImageCallback generatePaintUserpicCallback() override;
+
+		auto generateNameFirstLetters() const
+			-> const base::flat_set<QChar> & override;
+		auto generateNameWords() const
+			-> const base::flat_set<QString> & override;
+
+	private:
+		const not_null<Data::ForumTopic*> _topic;
+
+	};
+
+	void refreshRows(bool initial = false);
+	[[nodiscard]] std::unique_ptr<Row> createRow(
+		not_null<Data::ForumTopic*> topic);
+
+	const not_null<Data::Forum*> _forum;
+	FnMut<void(not_null<Data::ForumTopic*>)> _callback;
+	Fn<bool(not_null<Data::ForumTopic*>)> _filter;
 
 };

Telegram/SourceFiles/calls/group/calls_group_settings.cpp

@@ -25,6 +25,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/share_box.h"
 #include "history/view/history_view_schedule_box.h"
 #include "history/history_message.h" // GetErrorTextForSending.
+#include "history/history.h"
 #include "data/data_histories.h"
 #include "data/data_session.h"
 #include "base/timer_rpl.h"

Telegram/SourceFiles/data/data_changes.h

@@ -125,13 +125,11 @@ struct HistoryUpdate {
 		ChatOccupied       = (1U << 7),
 		MessageSent        = (1U << 8),
 		ScheduledSent      = (1U << 9),
-		ForwardDraft       = (1U << 10),
-		OutboxRead         = (1U << 11),
-		BotKeyboard        = (1U << 12),
-		CloudDraft         = (1U << 13),
-		LocalDraftSet      = (1U << 14),
+		OutboxRead         = (1U << 10),
+		BotKeyboard        = (1U << 11),
+		CloudDraft         = (1U << 12),
 
-		LastUsedBit        = (1U << 14),
+		LastUsedBit        = (1U << 12),
 	};
 	using Flags = base::flags<Flag>;
 	friend inline constexpr auto is_flag_type(Flag) { return true; }
@@ -196,8 +194,10 @@ struct EntryUpdate {
 
 		Repaint = (1U << 0),
 		HasPinnedMessages = (1U << 1),
+		ForwardDraft = (1U << 2),
+		LocalDraftSet = (1U << 3),
 
-		LastUsedBit = (1U << 1),
+		LastUsedBit = (1U << 3),
 	};
 	using Flags = base::flags<Flag>;
 	friend inline constexpr auto is_flag_type(Flag) { return true; }

Telegram/SourceFiles/data/data_session.cpp

@@ -1151,13 +1151,6 @@ void Session::deleteConversationLocally(not_null<PeerData*> peer) {
 	}
 }
 
-void Session::cancelForwarding(not_null<History*> history) {
-	history->setForwardDraft({});
-	session().changes().historyUpdated(
-		history,
-		Data::HistoryUpdate::Flag::ForwardDraft);
-}
-
 bool Session::chatsListLoaded(Data::Folder *folder) {
 	return chatsList(folder)->loaded();
 }

Telegram/SourceFiles/data/data_session.h

@@ -226,8 +226,6 @@ public:
 
 	void deleteConversationLocally(not_null<PeerData*> peer);
 
-	void cancelForwarding(not_null<History*> history);
-
 	[[nodiscard]] rpl::variable<bool> &contactsLoaded() {
 		return _contactsLoaded;
 	}

Telegram/SourceFiles/dialogs/dialogs.style

@@ -445,3 +445,18 @@ forumTopicIconPosition: point(2px, 0px);
 editTopicTitleMargin: margins(70px, 2px, 22px, 18px);
 editTopicIconPosition: point(24px, 19px);
 editTopicMaxHeight: 408px;
+
+chooseTopicListItem: PeerListItem(defaultPeerListItem) {
+	height: 44px;
+	photoSize: 28px;
+	photoPosition: point(16px, 5px);
+	namePosition: point(71px, 11px);
+	nameStyle: TextStyle(defaultTextStyle) {
+		font: font(14px semibold);
+		linkFont: font(14px semibold);
+		linkFontOver: font(14px semibold);
+	}
+}
+chooseTopicList: PeerList(defaultPeerList) {
+	item: chooseTopicListItem;
+}

Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp

@@ -2191,23 +2191,27 @@ void InnerWidget::trackSearchResultsHistory(not_null<History*> history) {
 	}
 }
 
-PeerData *InnerWidget::updateFromParentDrag(QPoint globalPosition) {
+Data::Thread *InnerWidget::updateFromParentDrag(QPoint globalPosition) {
 	selectByMouse(globalPosition);
-	const auto getPeerFromRow = [](Row *row) -> PeerData* {
-		if (const auto history = row ? row->history() : nullptr) {
-			return history->peer;
-		}
-		return nullptr;
+
+	const auto fromRow = [](Row *row) {
+		return row ? row->thread() : nullptr;
 	};
 	if (_state == WidgetState::Default) {
-		return getPeerFromRow(_selected);
+		return fromRow(_selected);
 	} else if (_state == WidgetState::Filtered) {
 		if (base::in_range(_filteredSelected, 0, _filterResults.size())) {
-			return getPeerFromRow(_filterResults[_filteredSelected]);
+			return fromRow(_filterResults[_filteredSelected]);
 		} else if (base::in_range(_peerSearchSelected, 0, _peerSearchResults.size())) {
-			return _peerSearchResults[_peerSearchSelected]->peer;
+			return session().data().history(
+				_peerSearchResults[_peerSearchSelected]->peer);
 		} else if (base::in_range(_searchedSelected, 0, _searchResults.size())) {
-			return _searchResults[_searchedSelected]->item()->history()->peer;
+			if (const auto item = _searchResults[_searchedSelected]->item()) {
+				if (const auto topic = item->topic()) {
+					return topic;
+				}
+				return item->history();
+			}
 		}
 	}
 	return nullptr;
@@ -3416,8 +3420,8 @@ void InnerWidget::setupShortcuts() {
 			return jumpToDialogRow(last);
 		});
 		request->check(Command::ChatSelf) && request->handle([=] {
-			_controller->content()->choosePeer(
-				session().userPeerId(),
+			_controller->content()->chooseThread(
+				session().user(),
 				ShowAtUnreadMsgId);
 			return true;
 		});

Telegram/SourceFiles/dialogs/dialogs_inner_widget.h

@@ -40,6 +40,7 @@ class SessionController;
 
 namespace Data {
 class CloudImageView;
+class Thread;
 class Folder;
 class Forum;
 } // namespace Data
@@ -133,7 +134,7 @@ public:
 	void onHashtagFilterUpdate(QStringView newFilter);
 	void appendToFiltered(Key key);
 
-	PeerData *updateFromParentDrag(QPoint globalPosition);
+	Data::Thread *updateFromParentDrag(QPoint globalPosition);
 
 	void setLoadMoreCallback(Fn<void()> callback);
 	void setLoadMoreFilteredCallback(Fn<void()> callback);

Telegram/SourceFiles/dialogs/dialogs_widget.cpp

@@ -414,10 +414,7 @@ void Widget::chosenRow(const ChosenRow &row) {
 		&& row.filteredRow;
 	const auto history = row.key.history();
 	if (const auto topic = row.key.topic()) {
-		controller()->showTopic(
-			topic,
-			row.message.fullId.msg,
-			Window::SectionShow::Way::ClearStack);
+		controller()->content()->chooseThread(topic, row.message.fullId.msg);
 	} else if (history && history->peer->isForum() && !row.message.fullId) {
 		controller()->openForum(history->peer->asChannel());
 		return;
@@ -448,7 +445,7 @@ void Widget::chosenRow(const ChosenRow &row) {
 				toSeparate();
 			}
 		} else {
-			controller()->content()->choosePeer(peer->id, showAtMsgId);
+			controller()->content()->chooseThread(history, showAtMsgId);
 		}
 	} else if (const auto folder = row.key.folder()) {
 		controller()->openFolder(folder);
@@ -1783,7 +1780,9 @@ void Widget::dragMoveEvent(QDragMoveEvent *e) {
 			e->setDropAction(Qt::IgnoreAction);
 		}
 	} else {
-		if (_dragForward) updateDragInScroll(false);
+		if (_dragForward) {
+			updateDragInScroll(false);
+		}
 		_inner->dragLeft();
 		e->setDropAction(Qt::IgnoreAction);
 	}
@@ -1814,10 +1813,11 @@ void Widget::updateDragInScroll(bool inScroll) {
 void Widget::dropEvent(QDropEvent *e) {
 	_chooseByDragTimer.cancel();
 	if (_scroll->geometry().contains(e->pos())) {
-		if (auto peer = _inner->updateFromParentDrag(mapToGlobal(e->pos()))) {
+		const auto point = mapToGlobal(e->pos());
+		if (const auto thread = _inner->updateFromParentDrag(point)) {
 			e->acceptProposedAction();
 			controller()->content()->onFilesOrForwardDrop(
-				peer->id,
+				thread,
 				e->mimeData());
 			controller()->widget()->raise();
 			controller()->widget()->activateWindow();
@@ -2339,10 +2339,8 @@ bool Widget::cancelSearch() {
 	cancelSearchRequest();
 	if (!clearingQuery && _searchInChat) {
 		if (controller()->adaptive().isOneColumn()) {
-			if (const auto topic = _searchInChat.topic()) {
-				controller()->showTopic(topic);
-			} else if (const auto peer = _searchInChat.peer()) {
-				controller()->showPeerHistory(peer);
+			if (const auto thread = _searchInChat.thread()) {
+				controller()->showThread(thread);
 			} else {
 				Unexpected("Empty key in cancelSearch().");
 			}
@@ -2371,10 +2369,8 @@ void Widget::cancelSearchInChat() {
 		if (isOneColumn
 			&& !controller()->selectingPeer()
 			&& currentSearchQuery().trimmed().isEmpty()) {
-			if (const auto topic = _searchInChat.topic()) {
-				controller()->showTopic(topic);
-			} else if (const auto peer = _searchInChat.peer()) {
-				controller()->showPeerHistory(peer);
+			if (const auto thread = _searchInChat.thread()) {
+				controller()->showThread(thread);
 			} else {
 				Unexpected("Empty key in cancelSearchInPeer().");
 			}

Telegram/SourceFiles/history/history.cpp

@@ -355,6 +355,13 @@ void History::draftSavedToCloud(MsgId topicRootId) {
 	session().local().writeDrafts(this);
 }
 
+const Data::ForwardDraft &History::forwardDraft(
+		MsgId topicRootId) const {
+	static const auto kEmpty = Data::ForwardDraft();
+	const auto i = _forwardDrafts.find(topicRootId);
+	return (i != end(_forwardDrafts)) ? i->second : kEmpty;
+}
+
 Data::ResolvedForwardDraft History::resolveForwardDraft(
 		const Data::ForwardDraft &draft) const {
 	return Data::ResolvedForwardDraft{
@@ -363,10 +370,12 @@ Data::ResolvedForwardDraft History::resolveForwardDraft(
 	};
 }
 
-Data::ResolvedForwardDraft History::resolveForwardDraft() {
-	auto result = resolveForwardDraft(_forwardDraft);
-	if (result.items.size() != _forwardDraft.ids.size()) {
-		setForwardDraft({
+Data::ResolvedForwardDraft History::resolveForwardDraft(
+		MsgId topicRootId) {
+	const auto &draft = forwardDraft(topicRootId);
+	auto result = resolveForwardDraft(draft);
+	if (result.items.size() != draft.ids.size()) {
+		setForwardDraft(topicRootId, {
 			.ids = owner().itemsToIds(result.items),
 			.options = result.options,
 		});
@@ -374,8 +383,29 @@ Data::ResolvedForwardDraft History::resolveForwardDraft() {
 	return result;
 }
 
-void History::setForwardDraft(Data::ForwardDraft &&draft) {
-	_forwardDraft = std::move(draft);
+void History::setForwardDraft(
+		MsgId topicRootId,
+		Data::ForwardDraft &&draft) {
+	auto changed = false;
+	if (draft.ids.empty()) {
+		changed = _forwardDrafts.remove(topicRootId);
+	} else {
+		auto &now = _forwardDrafts[topicRootId];
+		if (now != draft) {
+			now = std::move(draft);
+			changed = true;
+		}
+	}
+	if (changed) {
+		const auto entry = topicRootId
+			? peer->forumTopicFor(topicRootId)
+			: (Dialogs::Entry*)this;
+		if (entry) {
+			session().changes().entryUpdated(
+				entry,
+				Data::EntryUpdate::Flag::ForwardDraft);
+		}
+	}
 }
 
 not_null<HistoryItem*> History::createItem(
@@ -624,7 +654,8 @@ not_null<HistoryItem*> History::addNewLocalMessage(
 		TimeId date,
 		PeerId from,
 		const QString &postAuthor,
-		not_null<HistoryItem*> forwardOriginal) {
+		not_null<HistoryItem*> forwardOriginal,
+		MsgId topicRootId) {
 	return addNewItem(
 		makeMessage(
 			id,
@@ -632,7 +663,8 @@ not_null<HistoryItem*> History::addNewLocalMessage(
 			date,
 			from,
 			postAuthor,
-			forwardOriginal),
+			forwardOriginal,
+			topicRootId),
 		true);
 }
 

Telegram/SourceFiles/history/history.h

@@ -46,8 +46,14 @@ enum class ForwardOptions {
 struct ForwardDraft {
 	MessageIdsList ids;
 	ForwardOptions options = ForwardOptions::PreserveInfo;
+
+	friend inline constexpr auto operator<=>(
+		const ForwardDraft&,
+		const ForwardDraft&) = default;
 };
 
+using ForwardDrafts = base::flat_map<MsgId, ForwardDraft>;
+
 struct ResolvedForwardDraft {
 	HistoryItemsList items;
 	ForwardOptions options = ForwardOptions::PreserveInfo;
@@ -165,7 +171,8 @@ public:
 		TimeId date,
 		PeerId from,
 		const QString &postAuthor,
-		not_null<HistoryItem*> forwardOriginal);
+		not_null<HistoryItem*> forwardOriginal,
+		MsgId topicRootId);
 	not_null<HistoryItem*> addNewLocalMessage(
 		MsgId id,
 		MessageFlags flags,
@@ -366,13 +373,13 @@ public:
 	void applyCloudDraft(MsgId topicRootId);
 	void draftSavedToCloud(MsgId topicRootId);
 
-	[[nodiscard]] const Data::ForwardDraft &forwardDraft() const {
-		return _forwardDraft;
-	}
+	[[nodiscard]] const Data::ForwardDraft &forwardDraft(
+		MsgId topicRootId) const;
 	[[nodiscard]] Data::ResolvedForwardDraft resolveForwardDraft(
 		const Data::ForwardDraft &draft) const;
-	[[nodiscard]] Data::ResolvedForwardDraft resolveForwardDraft();
-	void setForwardDraft(Data::ForwardDraft &&draft);
+	[[nodiscard]] Data::ResolvedForwardDraft resolveForwardDraft(
+		MsgId topicRootId);
+	void setForwardDraft(MsgId topicRootId, Data::ForwardDraft &&draft);
 
 	History *migrateSibling() const;
 	[[nodiscard]] bool useTopPromotion() const;
@@ -621,7 +628,7 @@ private:
 	Data::HistoryDrafts _drafts;
 	base::flat_map<MsgId, TimeId> _acceptCloudDraftsAfter;
 	base::flat_map<MsgId, int> _savingCloudDraftRequests;
-	Data::ForwardDraft _forwardDraft;
+	Data::ForwardDrafts _forwardDrafts;
 
 	QString _topPromotedMessage;
 	QString _topPromotedType;

Telegram/SourceFiles/history/history_message.cpp

@@ -411,7 +411,8 @@ HistoryMessage::HistoryMessage(
 	TimeId date,
 	PeerId from,
 	const QString &postAuthor,
-	not_null<HistoryItem*> original)
+	not_null<HistoryItem*> original,
+	MsgId topicRootId)
 : HistoryItem(
 		history,
 		id,
@@ -424,6 +425,8 @@ HistoryMessage::HistoryMessage(
 
 	const auto originalMedia = original->media();
 	const auto dropForwardInfo = original->computeDropForwardedInfo();
+	config.replyTo = config.replyToTop = topicRootId;
+	config.replyIsTopicPost = (topicRootId != 0);
 	if (!dropForwardInfo) {
 		config.originalDate = original->dateOriginal();
 		if (const auto info = original->hiddenSenderInfo()) {

Telegram/SourceFiles/history/history_message.h

@@ -72,7 +72,8 @@ public:
 		TimeId date,
 		PeerId from,
 		const QString &postAuthor,
-		not_null<HistoryItem*> original); // local forwarded
+		not_null<HistoryItem*> original,
+		MsgId topicRootId); // local forwarded
 	HistoryMessage(
 		not_null<History*> history,
 		MsgId id,

Telegram/SourceFiles/history/history_widget.cpp

@@ -84,6 +84,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_item_components.h"
 #include "history/history_unread_things.h"
 #include "history/view/controls/history_view_compose_search.h"
+#include "history/view/controls/history_view_forward_panel.h"
 #include "history/view/controls/history_view_voice_record_bar.h"
 #include "history/view/controls/history_view_ttl_button.h"
 #include "history/view/reactions/history_view_reactions_button.h"
@@ -255,11 +256,12 @@ HistoryWidget::HistoryWidget(
 , _botKeyboardShow(this, st::historyBotKeyboardShow)
 , _botKeyboardHide(this, st::historyBotKeyboardHide)
 , _botCommandStart(this, st::historyBotCommandStart)
-, _voiceRecordBar(std::make_unique<HistoryWidget::VoiceRecordBar>(
+, _voiceRecordBar(std::make_unique<VoiceRecordBar>(
 	this,
 	controller,
 	_send,
 	st::historySendSize.height()))
+, _forwardPanel(std::make_unique<ForwardPanel>([=] { updateField(); }))
 , _field(
 	this,
 	st::historyComposeField,
@@ -378,6 +380,12 @@ HistoryWidget::HistoryWidget(
 		_scroll->updateBars();
 	}, lifetime());
 
+	_forwardPanel->itemsUpdated(
+	) | rpl::start_with_next([=] {
+		updateControlsVisibility();
+		updateControlsGeometry();
+	}, lifetime());
+
 	InitMessageField(controller, _field, [=](
 			not_null<DocumentData*> document) {
 		if (_peer && Data::AllowEmojiWithoutPremium(_peer)) {
@@ -606,6 +614,7 @@ HistoryWidget::HistoryWidget(
 	using EntryUpdateFlag = Data::EntryUpdate::Flag;
 	session().changes().entryUpdates(
 		EntryUpdateFlag::HasPinnedMessages
+		| EntryUpdateFlag::ForwardDraft
 	) | rpl::start_with_next([=](const Data::EntryUpdate &update) {
 		if (_pinnedTracker
 			&& (update.flags & EntryUpdateFlag::HasPinnedMessages)
@@ -613,12 +622,14 @@ HistoryWidget::HistoryWidget(
 				|| (update.entry.get() == _migrated))) {
 			checkPinnedBarState();
 		}
+		if (update.flags & EntryUpdateFlag::ForwardDraft) {
+			updateForwarding();
+		}
 	}, lifetime());
 
 	using HistoryUpdateFlag = Data::HistoryUpdate::Flag;
 	session().changes().historyUpdates(
 		HistoryUpdateFlag::MessageSent
-		| HistoryUpdateFlag::ForwardDraft
 		| HistoryUpdateFlag::BotKeyboard
 		| HistoryUpdateFlag::CloudDraft
 		| HistoryUpdateFlag::UnreadMentions
@@ -633,9 +644,6 @@ HistoryWidget::HistoryWidget(
 		if (flags & HistoryUpdateFlag::MessageSent) {
 			synteticScrollToY(_scroll->scrollTopMax());
 		}
-		if (flags & HistoryUpdateFlag::ForwardDraft) {
-			updateForwarding();
-		}
 		if (flags & HistoryUpdateFlag::BotKeyboard) {
 			updateBotKeyboard(update.history);
 		}
@@ -3719,7 +3727,7 @@ void HistoryWidget::send(Api::SendOptions options) {
 			_peer,
 			{
 				.topicRootId = topicRootId,
-				.forward = &_toForward.items,
+				.forward = &_forwardPanel->items(),
 				.text = &message.textWithTags,
 				.ignoreSlowmodeCountdown = (options.scheduled != 0),
 			});
@@ -4281,7 +4289,7 @@ QRect HistoryWidget::floatPlayerAvailableRect() {
 }
 
 bool HistoryWidget::readyToForward() const {
-	return _canSendMessages && !_toForward.items.empty();
+	return _canSendMessages && !_forwardPanel->empty();
 }
 
 bool HistoryWidget::hasSilentToggle() const {
@@ -5274,15 +5282,6 @@ void HistoryWidget::itemRemoved(not_null<const HistoryItem*> item) {
 		toggleKeyboard();
 		_kbReplyTo = nullptr;
 	}
-	auto found = ranges::find(_toForward.items, item);
-	if (found != _toForward.items.end()) {
-		_toForward.items.erase(found);
-		updateForwardingTexts();
-		if (_toForward.items.empty()) {
-			updateControlsVisibility();
-			updateControlsGeometry();
-		}
-	}
 	const auto i = _itemRevealAnimations.find(item);
 	if (i != end(_itemRevealAnimations)) {
 		_itemRevealAnimations.erase(i);
@@ -5858,81 +5857,7 @@ void HistoryWidget::mousePressEvent(QMouseEvent *e) {
 		updateField();
 	} else if (_inReplyEditForward) {
 		if (readyToForward()) {
-			using Options = Data::ForwardOptions;
-			const auto now = _toForward.options;
-			const auto count = _toForward.items.size();
-			const auto dropNames = (now != Options::PreserveInfo);
-			const auto hasCaptions = [&] {
-				for (const auto item : _toForward.items) {
-					if (const auto media = item->media()) {
-						if (!item->originalText().text.isEmpty()
-							&& media->allowsEditCaption()) {
-							return true;
-						}
-					}
-				}
-				return false;
-			}();
-			const auto hasOnlyForcedForwardedInfo = [&] {
-				if (hasCaptions) {
-					return false;
-				}
-				for (const auto item : _toForward.items) {
-					if (const auto media = item->media()) {
-						if (!media->forceForwardedInfo()) {
-							return false;
-						}
-					} else {
-						return false;
-					}
-				}
-				return true;
-			}();
-			const auto dropCaptions = (now == Options::NoNamesAndCaptions);
-			const auto weak = Ui::MakeWeak(this);
-			const auto changeRecipient = crl::guard(weak, [=] {
-				if (_toForward.items.empty()) {
-					return;
-				}
-				const auto draft = std::move(_toForward);
-				session().data().cancelForwarding(_history);
-				auto list = session().data().itemsToIds(draft.items);
-				Window::ShowForwardMessagesBox(controller(), {
-					.ids = session().data().itemsToIds(draft.items),
-					.options = draft.options,
-				});
-			});
-			if (hasOnlyForcedForwardedInfo) {
-				changeRecipient();
-				return;
-			}
-			const auto optionsChanged = crl::guard(weak, [=](
-					Ui::ForwardOptions options) {
-				const auto newOptions = (options.hasCaptions
-					&& options.dropCaptions)
-					? Options::NoNamesAndCaptions
-					: options.dropNames
-					? Options::NoSenderNames
-					: Options::PreserveInfo;
-				if (_history && _toForward.options != newOptions) {
-					_toForward.options = newOptions;
-					_history->setForwardDraft({
-						.ids = session().data().itemsToIds(_toForward.items),
-						.options = newOptions,
-					});
-					updateField();
-				}
-			});
-			controller()->show(Box(
-				Ui::ForwardOptionsBox,
-				count,
-				Ui::ForwardOptions{
-					.dropNames = dropNames,
-					.hasCaptions = hasCaptions,
-					.dropCaptions = dropCaptions,
-				},
-				optionsChanged,
-				changeRecipient));
+			_forwardPanel->editOptions(controller());
 		} else {
 			controller()->showPeerHistory(
 				_peer,
@@ -6725,8 +6650,8 @@ void HistoryWidget::processReply() {
 					.text = tr::lng_reply_cant_forward(),
 					.confirmed = crl::guard(this, [=] {
 						controller()->content()->setForwardDraft(
-							_peer->id,
-							{.ids = { 1, itemId } });
+							_history,
+							{ .ids = { 1, itemId } });
 					}),
 					.confirmText = tr::lng_selected_forward(),
 					}));
@@ -6757,7 +6682,7 @@ void HistoryWidget::setReplyFieldsFromProcessing() {
 		return;
 	}
 
-	session().data().cancelForwarding(_history);
+	_history->setForwardDraft(MsgId(), {});
 	if (_composeSearch) {
 		_composeSearch->hideAnimated();
 	}
@@ -7024,7 +6949,7 @@ void HistoryWidget::cancelFieldAreaState() {
 	} else if (_editMsgId) {
 		cancelEdit();
 	} else if (readyToForward()) {
-		session().data().cancelForwarding(_history);
+		_history->setForwardDraft(MsgId(), {});
 	} else if (_replyToId) {
 		cancelReply();
 	} else if (_kbReplyTo) {
@@ -7437,115 +7362,16 @@ void HistoryWidget::updateReplyEditTexts(bool force) {
 }
 
 void HistoryWidget::updateForwarding() {
-	if (_history) {
-		_toForward = _history->resolveForwardDraft();
-		updateForwardingTexts();
-	} else {
-		_toForward = {};
+	_forwardPanel->update(_history, _history
+		? _history->resolveForwardDraft(MsgId())
+		: Data::ResolvedForwardDraft());
+	if (readyToForward()) {
+		cancelReply();
 	}
 	updateControlsVisibility();
 	updateControlsGeometry();
 }
 
-void HistoryWidget::updateForwardingTexts() {
-	int32 version = 0;
-	QString from;
-	TextWithEntities text;
-	const auto keepNames = (_toForward.options
-		== Data::ForwardOptions::PreserveInfo);
-	const auto keepCaptions = (_toForward.options
-		!= Data::ForwardOptions::NoNamesAndCaptions);
-	if (const auto count = int(_toForward.items.size())) {
-		auto insertedPeers = base::flat_set<not_null<PeerData*>>();
-		auto insertedNames = base::flat_set<QString>();
-		auto fullname = QString();
-		auto names = std::vector<QString>();
-		names.reserve(_toForward.items.size());
-		for (const auto item : _toForward.items) {
-			if (const auto from = item->senderOriginal()) {
-				if (!insertedPeers.contains(from)) {
-					insertedPeers.emplace(from);
-					names.push_back(from->shortName());
-					fullname = from->name();
-				}
-				version += from->nameVersion();
-			} else if (const auto info = item->hiddenSenderInfo()) {
-				if (!insertedNames.contains(info->name)) {
-					insertedNames.emplace(info->name);
-					names.push_back(info->firstName);
-					fullname = info->name;
-				}
-				++version;
-			} else {
-				Unexpected("Corrupt forwarded information in message.");
-			}
-		}
-		if (!keepNames) {
-			from = tr::lng_forward_sender_names_removed(tr::now);
-		} else if (names.size() > 2) {
-			from = tr::lng_forwarding_from(tr::now, lt_count, names.size() - 1, lt_user, names[0]);
-		} else if (names.size() < 2) {
-			from = fullname;
-		} else {
-			from = tr::lng_forwarding_from_two(tr::now, lt_user, names[0], lt_second_user, names[1]);
-		}
-
-		if (count < 2) {
-			const auto item = _toForward.items.front();
-			text = item->toPreview({
-				.hideSender = true,
-				.hideCaption = !keepCaptions,
-				.generateImages = false,
-			}).text;
-
-			const auto dropCustomEmoji = !session().premium()
-				&& !_peer->isSelf()
-				&& (item->computeDropForwardedInfo() || !keepNames);
-			if (dropCustomEmoji) {
-				text = DropCustomEmoji(std::move(text));
-			}
-		} else {
-			text = Ui::Text::PlainLink(
-				tr::lng_forward_messages(tr::now, lt_count, count));
-		}
-	}
-	_toForwardFrom.setText(st::msgNameStyle, from, Ui::NameTextOptions());
-	const auto context = Core::MarkedTextContext{
-		.session = &session(),
-		.customEmojiRepaint = [=] { updateField(); },
-	};
-	_toForwardText.setMarkedText(
-		st::messageTextStyle,
-		text,
-		Ui::DialogTextOptions(),
-		context);
-	_toForwardNameVersion = keepNames ? version : keepCaptions ? -1 : -2;
-}
-
-void HistoryWidget::checkForwardingInfo() {
-	if (!_toForward.items.empty()) {
-		const auto keepNames = (_toForward.options
-			== Data::ForwardOptions::PreserveInfo);
-		const auto keepCaptions = (_toForward.options
-			!= Data::ForwardOptions::NoNamesAndCaptions);
-		auto version = keepNames ? 0 : keepCaptions ? -1 : -2;
-		if (keepNames) {
-			for (const auto item : _toForward.items) {
-				if (const auto from = item->senderOriginal()) {
-					version += from->nameVersion();
-				} else if (const auto info = item->hiddenSenderInfo()) {
-					++version;
-				} else {
-					Unexpected("Corrupt forwarded information in message.");
-				}
-			}
-		}
-		if (version != _toForwardNameVersion) {
-			updateForwardingTexts();
-		}
-	}
-}
-
 void HistoryWidget::updateReplyToName() {
 	if (_editMsgId) {
 		return;
@@ -7594,7 +7420,6 @@ void HistoryWidget::drawField(Painter &p, const QRect &rect) {
 		backy -= st::historyReplyHeight;
 		backh += st::historyReplyHeight;
 	} else if (hasForward) {
-		checkForwardingInfo();
 		backy -= st::historyReplyHeight;
 		backh += st::historyReplyHeight;
 	} else if (_previewData && _previewData->pendingTill >= 0) {
@@ -7645,36 +7470,14 @@ void HistoryWidget::drawField(Painter &p, const QRect &rect) {
 			}
 		}
 	} else if (hasForward) {
-		auto forwardLeft = st::historyReplySkip;
 		st::historyForwardIcon.paint(p, st::historyReplyIconPosition + QPoint(0, backy), width());
 		if (!drawWebPagePreview) {
-			const auto firstItem = _toForward.items.front();
-			const auto firstMedia = firstItem->media();
-			const auto preview = (_toForward.items.size() < 2 && firstMedia && firstMedia->hasReplyPreview())
-				? firstMedia->replyPreview()
-				: nullptr;
-			if (preview) {
-				auto to = QRect(forwardLeft, backy + st::msgReplyPadding.top(), st::msgReplyBarSize.height(), st::msgReplyBarSize.height());
-				if (preview->width() == preview->height()) {
-					p.drawPixmap(to.x(), to.y(), preview->pix());
-				} else {
-					auto from = (preview->width() > preview->height()) ? QRect((preview->width() - preview->height()) / 2, 0, preview->height(), preview->height()) : QRect(0, (preview->height() - preview->width()) / 2, preview->width(), preview->width());
-					p.drawPixmap(to, preview->pix(), from);
-				}
-				forwardLeft += st::msgReplyBarSize.height() + st::msgReplyBarSkip - st::msgReplyBarSize.width() - st::msgReplyBarPos.x();
-			}
-			p.setPen(st::historyReplyNameFg);
-			_toForwardFrom.drawElided(p, forwardLeft, backy + st::msgReplyPadding.top(), width() - forwardLeft - _fieldBarCancel->width() - st::msgReplyPadding.right());
-			p.setPen(st::historyComposeAreaFg);
-			_toForwardText.draw(p, {
-				.position = QPoint(
-					forwardLeft,
-					backy + st::msgReplyPadding.top() + st::msgServiceNameFont->height),
-				.availableWidth = width() - forwardLeft - _fieldBarCancel->width() - st::msgReplyPadding.right(),
-				.palette = &st::historyComposeAreaPalette,
-				.spoiler = Ui::Text::DefaultSpoilerCache(),
-				.elisionLines = 1,
-			});
+			const auto x = st::historyReplySkip;
+			const auto available = width()
+				- x
+				- _fieldBarCancel->width()
+				- st::msgReplyPadding.right();
+			_forwardPanel->paint(p, x, backy, available, width());
 		}
 	}
 	if (drawWebPagePreview) {

Telegram/SourceFiles/history/history_widget.h

@@ -94,6 +94,7 @@ class ComposeSearch;
 namespace Controls {
 class RecordLock;
 class VoiceRecordBar;
+class ForwardPanel;
 class TTLButton;
 } // namespace Controls
 } // namespace HistoryView
@@ -110,6 +111,7 @@ public:
 	using FieldHistoryAction = Ui::InputField::HistoryAction;
 	using RecordLock = HistoryView::Controls::RecordLock;
 	using VoiceRecordBar = HistoryView::Controls::VoiceRecordBar;
+	using ForwardPanel = HistoryView::Controls::ForwardPanel;
 
 	HistoryWidget(
 		QWidget *parent,
@@ -189,7 +191,6 @@ public:
 	bool cancelReply(bool lastKeyboardUsed = false);
 	void cancelEdit();
 	void updateForwarding();
-	void updateForwardingTexts();
 
 	void pushReplyReturn(not_null<HistoryItem*> item);
 	[[nodiscard]] QVector<FullMsgId> replyReturns() const;
@@ -470,7 +471,6 @@ private:
 	int countMembersDropdownHeightMax() const;
 
 	void updateReplyToName();
-	void checkForwardingInfo();
 	bool editingMessage() const {
 		return _editMsgId != 0;
 	}
@@ -617,10 +617,6 @@ private:
 	MsgId _processingReplyId = 0;
 	HistoryItem *_processingReplyItem = nullptr;
 
-	Data::ResolvedForwardDraft _toForward;
-	Ui::Text::String _toForwardFrom, _toForwardText;
-	int _toForwardNameVersion = 0;
-
 	MsgId _editMsgId = 0;
 
 	HistoryItem *_replyEditMsg = nullptr;
@@ -723,6 +719,7 @@ private:
 	object_ptr<Ui::IconButton> _scheduled = { nullptr };
 	std::unique_ptr<HistoryView::Controls::TTLButton> _ttlInfo;
 	const std::unique_ptr<VoiceRecordBar> _voiceRecordBar;
+	const std::unique_ptr<ForwardPanel> _forwardPanel;
 	std::unique_ptr<HistoryView::ComposeSearch> _composeSearch;
 	bool _cmdStartShown = false;
 	object_ptr<Ui::InputField> _field;

Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp

@@ -42,6 +42,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_item.h"
 #include "history/view/controls/history_view_voice_record_bar.h"
 #include "history/view/controls/history_view_ttl_button.h"
+#include "history/view/controls/history_view_forward_panel.h"
 #include "history/view/history_view_webpage_preview.h"
 #include "inline_bots/bot_attach_web_view.h"
 #include "inline_bots/inline_results_widget.h"
@@ -89,7 +90,8 @@ using MessageToEdit = ComposeControls::MessageToEdit;
 using VoiceToSend = ComposeControls::VoiceToSend;
 using SendActionUpdate = ComposeControls::SendActionUpdate;
 using SetHistoryArgs = ComposeControls::SetHistoryArgs;
-using VoiceRecordBar = HistoryView::Controls::VoiceRecordBar;
+using VoiceRecordBar = Controls::VoiceRecordBar;
+using ForwardPanel = Controls::ForwardPanel;
 
 [[nodiscard]] auto ShowWebPagePreview(WebPageData *page) {
 	return page && (page->pendingTill >= 0);
@@ -331,13 +333,18 @@ rpl::producer<WebPageData*> WebpageProcessor::pageDataChanges() const {
 
 class FieldHeader final : public Ui::RpWidget {
 public:
-	FieldHeader(QWidget *parent, not_null<Data::Session*> data);
+	FieldHeader(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller);
 
 	void setHistory(const SetHistoryArgs &args);
 	void init();
 
 	void editMessage(FullMsgId id);
 	void replyToMessage(FullMsgId id);
+	void updateForwarding(
+		Data::Thread *thread,
+		Data::ResolvedForwardDraft items);
 	void previewRequested(
 		rpl::producer<QString> title,
 		rpl::producer<QString> description,
@@ -345,6 +352,7 @@ public:
 
 	[[nodiscard]] bool isDisplayed() const;
 	[[nodiscard]] bool isEditingMessage() const;
+	[[nodiscard]] bool readyToForward() const;
 	[[nodiscard]] FullMsgId replyingToMessage() const;
 	[[nodiscard]] rpl::producer<FullMsgId> editMsgId() const;
 	[[nodiscard]] rpl::producer<FullMsgId> scrollToItemRequests() const;
@@ -358,6 +366,9 @@ public:
 	[[nodiscard]] rpl::producer<> replyCancelled() const {
 		return _replyCancelled.events();
 	}
+	[[nodiscard]] rpl::producer<> forwardCancelled() const {
+		return _forwardCancelled.events();
+	}
 	[[nodiscard]] rpl::producer<> previewCancelled() const {
 		return _previewCancelled.events();
 	}
@@ -374,6 +385,9 @@ private:
 
 	void paintWebPage(Painter &p, not_null<PeerData*> peer);
 	void paintEditOrReplyToMessage(Painter &p);
+	void paintForwardInfo(Painter &p);
+
+	bool hasPreview() const;
 
 	struct Preview {
 		WebPageData *data = nullptr;
@@ -382,6 +396,7 @@ private:
 		bool cancelled = false;
 	};
 
+	const not_null<Window::SessionController*> _controller;
 	History *_history = nullptr;
 	rpl::variable<QString> _title;
 	rpl::variable<QString> _description;
@@ -389,12 +404,13 @@ private:
 	Preview _preview;
 	rpl::event_stream<> _editCancelled;
 	rpl::event_stream<> _replyCancelled;
+	rpl::event_stream<> _forwardCancelled;
 	rpl::event_stream<> _previewCancelled;
 
-	bool hasPreview() const;
-
 	rpl::variable<FullMsgId> _editMsgId;
 	rpl::variable<FullMsgId> _replyToId;
+	std::unique_ptr<ForwardPanel> _forwardPanel;
+	rpl::producer<> _toForwardUpdated;
 
 	HistoryItem *_shownMessage = nullptr;
 	Ui::Text::String _shownMessageName;
@@ -412,9 +428,14 @@ private:
 
 };
 
-FieldHeader::FieldHeader(QWidget *parent, not_null<Data::Session*> data)
+FieldHeader::FieldHeader(
+	QWidget *parent,
+	not_null<Window::SessionController*> controller)
 : RpWidget(parent)
-, _data(data)
+, _controller(controller)
+, _forwardPanel(
+	std::make_unique<ForwardPanel>([=] { customEmojiRepaint(); }))
+, _data(&controller->session().data())
 , _cancel(Ui::CreateChild<Ui::IconButton>(this, st::historyReplyCancel)) {
 	resize(QSize(parent->width(), st::historyReplyHeight));
 	init();
@@ -430,6 +451,11 @@ void FieldHeader::init() {
 		updateControlsGeometry(size);
 	}, lifetime());
 
+	_forwardPanel->itemsUpdated(
+	) | rpl::start_with_next([=] {
+		updateVisible();
+	}, lifetime());
+
 	const auto leftIconPressed = lifetime().make_state<bool>(false);
 	paintRequest(
 	) | rpl::start_with_next([=] {
@@ -439,15 +465,19 @@ void FieldHeader::init() {
 		const auto position = st::historyReplyIconPosition;
 		if (isEditingMessage()) {
 			st::historyEditIcon.paint(p, position, width());
+		} else if (readyToForward()) {
+			st::historyForwardIcon.paint(p, position, width());
 		} else if (replyingToMessage()) {
 			st::historyReplyIcon.paint(p, position, width());
 		}
 
-		(!ShowWebPagePreview(_preview.data) || *leftIconPressed)
-			? paintEditOrReplyToMessage(p)
-			: paintWebPage(
+		(ShowWebPagePreview(_preview.data) && !*leftIconPressed)
+			? paintWebPage(
 				p,
-				_history ? _history->peer : _data->session().user());
+				_history ? _history->peer : _data->session().user())
+			: (isEditingMessage() || !readyToForward())
+			? paintEditOrReplyToMessage(p)
+			: paintForwardInfo(p);
 	}, lifetime());
 
 	_editMsgId.value(
@@ -487,6 +517,8 @@ void FieldHeader::init() {
 			_previewCancelled.fire({});
 		} else if (_editMsgId.current()) {
 			_editCancelled.fire({});
+		} else if (readyToForward()) {
+			_forwardCancelled.fire({});
 		} else if (_replyToId.current()) {
 			_replyCancelled.fire({});
 		}
@@ -515,7 +547,9 @@ void FieldHeader::init() {
 	events(
 	) | rpl::filter([=](not_null<QEvent*> event) {
 		return ranges::contains(kMouseEvents, event->type())
-			&& (isEditingMessage() || replyingToMessage());
+			&& (isEditingMessage()
+				|| readyToForward()
+				|| replyingToMessage());
 	}) | rpl::start_with_next([=](not_null<QEvent*> event) {
 		const auto type = event->type();
 		const auto e = static_cast<QMouseEvent*>(event.get());
@@ -538,10 +572,14 @@ void FieldHeader::init() {
 				*leftIconPressed = true;
 				update();
 			} else if (isLeftButton && inPreviewRect) {
-				auto id = isEditingMessage()
-					? _editMsgId.current()
-					: replyingToMessage();
-				_scrollToItemRequests.fire(std::move(id));
+				if (!isEditingMessage() && readyToForward()) {
+					_forwardPanel->editOptions(_controller);
+				} else {
+					auto id = isEditingMessage()
+						? _editMsgId.current()
+						: replyingToMessage();
+					_scrollToItemRequests.fire(std::move(id));
+				}
 			}
 		} else if (type == QEvent::MouseButtonRelease) {
 			if (isLeftButton && *leftIconPressed) {
@@ -761,6 +799,17 @@ void FieldHeader::paintEditOrReplyToMessage(Painter &p) {
 	});
 }
 
+void FieldHeader::paintForwardInfo(Painter &p) {
+	_repaintScheduled = false;
+
+	const auto replySkip = st::historyReplySkip;
+	const auto availableWidth = width()
+		- replySkip
+		- _cancel->width()
+		- st::msgReplyPadding.right();
+	_forwardPanel->paint(p, replySkip, 0, availableWidth, width());
+}
+
 void FieldHeader::updateVisible() {
 	isDisplayed() ? show() : hide();
 	_visibleChanged.fire(isVisible());
@@ -771,13 +820,20 @@ rpl::producer<bool> FieldHeader::visibleChanged() {
 }
 
 bool FieldHeader::isDisplayed() const {
-	return isEditingMessage() || replyingToMessage() || hasPreview();
+	return isEditingMessage()
+		|| readyToForward()
+		|| replyingToMessage()
+		|| hasPreview();
 }
 
 bool FieldHeader::isEditingMessage() const {
 	return !!_editMsgId.current();
 }
 
+bool FieldHeader::readyToForward() const {
+	return !_forwardPanel->empty();
+}
+
 FullMsgId FieldHeader::replyingToMessage() const {
 	return _replyToId.current();
 }
@@ -811,6 +867,15 @@ void FieldHeader::replyToMessage(FullMsgId id) {
 	_replyToId = id;
 }
 
+void FieldHeader::updateForwarding(
+		Data::Thread *thread,
+		Data::ResolvedForwardDraft items) {
+	_forwardPanel->update(thread, std::move(items));
+	if (readyToForward()) {
+		replyToMessage({});
+	}
+}
+
 rpl::producer<FullMsgId> FieldHeader::editMsgId() const {
 	return _editMsgId.value();
 }
@@ -863,9 +928,7 @@ ComposeControls::ComposeControls(
 , _autocomplete(std::make_unique<FieldAutocomplete>(
 		parent,
 		window))
-, _header(std::make_unique<FieldHeader>(
-		_wrap.get(),
-		&_window->session().data()))
+, _header(std::make_unique<FieldHeader>(_wrap.get(), _window))
 , _voiceRecordBar(std::make_unique<VoiceRecordBar>(
 		_wrap.get(),
 		parent,
@@ -893,11 +956,10 @@ Main::Session &ComposeControls::session() const {
 void ComposeControls::setHistory(SetHistoryArgs &&args) {
 	// Right now only single non-null set of history is supported.
 	// Otherwise initWebpageProcess should be updated / rewritten.
-	Expects(!_history && *args.history);
+	Expects(!_history && (*args.history));
 
 	_showSlowmodeError = std::move(args.showSlowmodeError);
 	_sendActionFactory = std::move(args.sendActionFactory);
-	_topicRootId = args.topicRootId;
 	_slowmodeSecondsLeft = rpl::single(0)
 		| rpl::then(std::move(args.slowmodeSecondsLeft));
 	_sendDisabledBySlowmode = rpl::single(false)
@@ -905,9 +967,9 @@ void ComposeControls::setHistory(SetHistoryArgs &&args) {
 	_writeRestriction = rpl::single(std::optional<QString>())
 		| rpl::then(std::move(args.writeRestriction));
 	const auto history = *args.history;
-	//if (_history == history) {
-	//	return;
-	//}
+	if (_history == history) {
+		return;
+	}
 	unregisterDraftSources();
 	_history = history;
 	_header->setHistory(args);
@@ -915,6 +977,7 @@ void ComposeControls::setHistory(SetHistoryArgs &&args) {
 	_window->tabbedSelector()->setCurrentPeer(
 		history ? history->peer.get() : nullptr);
 	initWebpageProcess();
+	initForwardProcess();
 	updateBotCommandShown();
 	updateMessagesTTLShown();
 	updateControlsGeometry(_wrap->size());
@@ -942,7 +1005,10 @@ void ComposeControls::setHistory(SetHistoryArgs &&args) {
 }
 
 void ComposeControls::setCurrentDialogsEntryState(Dialogs::EntryState state) {
+	unregisterDraftSources();
 	_currentDialogsEntryState = state;
+	updateForwarding();
+	registerDraftSource();
 	if (_inlineResults) {
 		_inlineResults->setCurrentDialogsEntryState(state);
 	}
@@ -1329,6 +1395,11 @@ void ComposeControls::init() {
 		cancelReplyMessage();
 	}, _wrap->lifetime());
 
+	_header->forwardCancelled(
+	) | rpl::start_with_next([=] {
+		cancelForward();
+	}, _wrap->lifetime());
+
 	_header->visibleChanged(
 	) | rpl::start_with_next([=](bool shown) {
 		updateHeight();
@@ -1384,7 +1455,7 @@ bool ComposeControls::showRecordButton() const {
 		&& !_voiceRecordBar->isListenState()
 		&& !_voiceRecordBar->isRecordingByAnotherBar()
 		&& !HasSendText(_field)
-		//&& !readyToForward()
+		&& !readyToForward()
 		&& !isEditingMessage();
 }
 
@@ -1855,10 +1926,20 @@ void ComposeControls::applyDraft(FieldHistoryAction fieldHistoryAction) {
 		_header->replyToMessage({});
 	} else {
 		_header->replyToMessage({ _history->peer->id, draft->msgId });
+		if (_header->replyingToMessage()) {
+			cancelForward();
+		}
 		_header->editMessage({});
 	}
 }
 
+void ComposeControls::cancelForward() {
+	_history->setForwardDraft(
+		_currentDialogsEntryState.rootId,
+		{});
+	updateForwarding();
+}
+
 void ComposeControls::fieldTabbed() {
 	if (!_autocomplete->isHidden()) {
 		_autocomplete->chooseSelected(FieldAutocomplete::ChooseMethod::ByTab);
@@ -2391,9 +2472,8 @@ void ComposeControls::toggleTabbedSelectorMode() {
 				&& !_window->adaptive().isOneColumn()) {
 			Core::App().settings().setTabbedSelectorSectionEnabled(true);
 			Core::App().saveSettingsDelayed();
-			const auto topic = _topicRootId
-				? _history->peer->forumTopicFor(_topicRootId)
-				: nullptr;
+			const auto topic = _history->peer->forumTopicFor(
+				_currentDialogsEntryState.rootId);
 			pushTabbedSelectorToThirdSection(
 				(topic ? topic : (Data::Thread*)_history),
 				Window::SectionShow::Way::ClearStack);
@@ -2499,6 +2579,9 @@ void ComposeControls::replyToMessage(FullMsgId id) {
 		}
 	} else {
 		_header->replyToMessage(id);
+		if (_header->replyingToMessage()) {
+			cancelForward();
+		}
 	}
 
 	_saveDraftText = true;
@@ -2528,15 +2611,29 @@ void ComposeControls::cancelReplyMessage() {
 	}
 }
 
+void ComposeControls::updateForwarding() {
+	const auto rootId = _currentDialogsEntryState.rootId;
+	const auto thread = (_history && rootId)
+		? _history->peer->forumTopicFor(rootId)
+		: (Data::Thread*)_history;
+	_header->updateForwarding(thread, thread
+		? _history->resolveForwardDraft(rootId)
+		: Data::ResolvedForwardDraft());
+	updateSendButtonType();
+}
+
 bool ComposeControls::handleCancelRequest() {
 	if (_isInlineBot) {
 		cancelInlineBot();
 		return true;
+	} else if (_autocomplete && !_autocomplete->isHidden()) {
+		_autocomplete->hideAnimated();
+		return true;
 	} else if (isEditingMessage()) {
 		cancelEditMessage();
 		return true;
-	} else if (_autocomplete && !_autocomplete->isHidden()) {
-		_autocomplete->hideAnimated();
+	} else if (readyToForward()) {
+		cancelForward();
 		return true;
 	} else if (replyingToMessage()) {
 		cancelReplyMessage();
@@ -2591,6 +2688,22 @@ void ComposeControls::initWebpageProcess() {
 		_preview->pageDataChanges());
 }
 
+void ComposeControls::initForwardProcess() {
+	using EntryUpdateFlag = Data::EntryUpdate::Flag;
+	session().changes().entryUpdates(
+		EntryUpdateFlag::ForwardDraft
+	) | rpl::start_with_next([=](const Data::EntryUpdate &update) {
+		if (const auto topic = update.entry->asTopic()) {
+			if (topic->history() == _history
+				&& topic->rootId() == _currentDialogsEntryState.rootId) {
+				updateForwarding();
+			}
+		}
+	}, _wrap->lifetime());
+
+	updateForwarding();
+}
+
 WebPageId ComposeControls::webPageId() const {
 	return _header->webPageId();
 }
@@ -2613,6 +2726,10 @@ FullMsgId ComposeControls::replyingToMessage() const {
 	return _header->replyingToMessage();
 }
 
+bool ComposeControls::readyToForward() const {
+	return _header->readyToForward();
+}
+
 bool ComposeControls::isLockPresent() const {
 	return _voiceRecordBar->isLockPresent();
 }

Telegram/SourceFiles/history/view/controls/history_view_compose_controls.h

@@ -149,6 +149,7 @@ public:
 	bool returnTabbedSelector();
 
 	[[nodiscard]] bool isEditingMessage() const;
+	[[nodiscard]] bool readyToForward() const;
 	[[nodiscard]] FullMsgId replyingToMessage() const;
 
 	[[nodiscard]] bool preventsClose(Fn<void()> &&continueCallback) const;
@@ -164,6 +165,9 @@ public:
 	void replyToMessage(FullMsgId id);
 	void cancelReplyMessage();
 
+	void updateForwarding();
+	void cancelForward();
+
 	bool handleCancelRequest();
 
 	[[nodiscard]] TextWithTags getTextWithAppliedMarkdown() const;
@@ -208,6 +212,7 @@ private:
 	void initSendButton();
 	void initSendAsButton();
 	void initWebpageProcess();
+	void initForwardProcess();
 	void initWriteRestriction();
 	void initVoiceRecordBar();
 	void initAutocomplete();
@@ -294,7 +299,6 @@ private:
 	rpl::variable<bool> _sendDisabledBySlowmode;
 	rpl::variable<std::optional<QString>> _writeRestriction;
 	rpl::variable<bool> _hidden;
-	MsgId _topicRootId = 0;
 	Mode _mode = Mode::Normal;
 
 	const std::unique_ptr<Ui::RpWidget> _wrap;

Telegram/SourceFiles/history/view/controls/history_view_forward_panel.cpp

@@ -0,0 +1,362 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "history/view/controls/history_view_forward_panel.h"
+
+#include "history/history.h"
+#include "history/history_message.h"
+#include "history/history_item_components.h"
+#include "history/view/history_view_item_preview.h"
+#include "data/data_session.h"
+#include "data/data_media_types.h"
+#include "data/data_forum_topic.h"
+#include "main/main_session.h"
+#include "ui/chat/forward_options_box.h"
+#include "ui/text/text_options.h"
+#include "ui/text/text_utilities.h"
+#include "ui/painter.h"
+#include "core/ui_integration.h"
+#include "lang/lang_keys.h"
+#include "window/window_peer_menu.h"
+#include "window/window_session_controller.h"
+#include "styles/style_chat.h"
+
+namespace HistoryView::Controls {
+namespace {
+
+constexpr auto kUnknownVersion = -1;
+constexpr auto kNameWithCaptionsVersion = -2;
+constexpr auto kNameNoCaptionsVersion = -3;
+
+} // namespace
+
+ForwardPanel::ForwardPanel(Fn<void()> repaint)
+: _repaint(std::move(repaint)) {
+}
+
+void ForwardPanel::update(
+		Data::Thread *to,
+		Data::ResolvedForwardDraft draft) {
+	if (_to == to
+		&& _data.items == draft.items
+		&& _data.options == draft.options) {
+		return;
+	}
+	_dataLifetime.destroy();
+	_data = std::move(draft);
+	_to = to;
+	if (!empty()) {
+		Assert(to != nullptr);
+
+		_data.items.front()->history()->owner().itemRemoved(
+		) | rpl::start_with_next([=](not_null<const HistoryItem*> item) {
+			itemRemoved(item);
+		}, _dataLifetime);
+
+		if (const auto topic = _to->asTopic()) {
+			topic->destroyed(
+			) | rpl::start_with_next([=] {
+				update(nullptr, {});
+			}, _dataLifetime);
+		}
+
+		updateTexts();
+	}
+	_itemsUpdated.fire({});
+}
+
+rpl::producer<> ForwardPanel::itemsUpdated() const {
+	return _itemsUpdated.events();
+}
+
+void ForwardPanel::checkTexts() {
+	if (empty()) {
+		return;
+	}
+	const auto keepNames = (_data.options
+		== Data::ForwardOptions::PreserveInfo);
+	const auto keepCaptions = (_data.options
+		!= Data::ForwardOptions::NoNamesAndCaptions);
+	auto version = keepNames
+		? 0
+		: keepCaptions
+		? kNameWithCaptionsVersion
+		: kNameNoCaptionsVersion;
+	if (keepNames) {
+		for (const auto item : _data.items) {
+			if (const auto from = item->senderOriginal()) {
+				version += from->nameVersion();
+			} else if (const auto info = item->hiddenSenderInfo()) {
+				++version;
+			} else {
+				Unexpected("Corrupt forwarded information in message.");
+			}
+		}
+	}
+	if (_nameVersion != version) {
+		_nameVersion = version;
+		updateTexts();
+	}
+}
+
+void ForwardPanel::updateTexts() {
+	const auto repainter = gsl::finally([&] {
+		_repaint();
+	});
+	if (empty()) {
+		_from.clear();
+		_text.clear();
+		return;
+	}
+	int32 version = 0;
+	QString from;
+	TextWithEntities text;
+	const auto keepNames = (_data.options
+		== Data::ForwardOptions::PreserveInfo);
+	const auto keepCaptions = (_data.options
+		!= Data::ForwardOptions::NoNamesAndCaptions);
+	if (const auto count = int(_data.items.size())) {
+		auto insertedPeers = base::flat_set<not_null<PeerData*>>();
+		auto insertedNames = base::flat_set<QString>();
+		auto fullname = QString();
+		auto names = std::vector<QString>();
+		names.reserve(_data.items.size());
+		for (const auto item : _data.items) {
+			if (const auto from = item->senderOriginal()) {
+				if (!insertedPeers.contains(from)) {
+					insertedPeers.emplace(from);
+					names.push_back(from->shortName());
+					fullname = from->name();
+				}
+			} else if (const auto info = item->hiddenSenderInfo()) {
+				if (!insertedNames.contains(info->name)) {
+					insertedNames.emplace(info->name);
+					names.push_back(info->firstName);
+					fullname = info->name;
+				}
+			} else {
+				Unexpected("Corrupt forwarded information in message.");
+			}
+		}
+		if (!keepNames) {
+			from = tr::lng_forward_sender_names_removed(tr::now);
+		} else if (names.size() > 2) {
+			from = tr::lng_forwarding_from(
+				tr::now,
+				lt_count,
+				names.size() - 1,
+				lt_user,
+				names[0]);
+		} else if (names.size() < 2) {
+			from = fullname;
+		} else {
+			from = tr::lng_forwarding_from_two(
+				tr::now,
+				lt_user,
+				names[0],
+				lt_second_user,
+				names[1]);
+		}
+
+		if (count < 2) {
+			const auto item = _data.items.front();
+			text = item->toPreview({
+				.hideSender = true,
+				.hideCaption = !keepCaptions,
+				.generateImages = false,
+			}).text;
+			const auto history = item->history();
+			const auto dropCustomEmoji = !history->session().premium()
+				&& !_to->owningHistory()->peer->isSelf()
+				&& (item->computeDropForwardedInfo() || !keepNames);
+			if (dropCustomEmoji) {
+				text = DropCustomEmoji(std::move(text));
+			}
+		} else {
+			text = Ui::Text::PlainLink(
+				tr::lng_forward_messages(tr::now, lt_count, count));
+		}
+	}
+	_from.setText(st::msgNameStyle, from, Ui::NameTextOptions());
+	const auto context = Core::MarkedTextContext{
+		.session = &_to->session(),
+		.customEmojiRepaint = _repaint,
+	};
+	_text.setMarkedText(
+		st::messageTextStyle,
+		text,
+		Ui::DialogTextOptions(),
+		context);
+}
+
+void ForwardPanel::refreshTexts() {
+	_nameVersion = kUnknownVersion;
+	checkTexts();
+}
+
+void ForwardPanel::itemRemoved(not_null<const HistoryItem*> item) {
+	const auto i = ranges::find(_data.items, item);
+	if (i != end(_data.items)) {
+		_data.items.erase(i);
+		refreshTexts();
+		_itemsUpdated.fire({});
+	}
+}
+
+const HistoryItemsList &ForwardPanel::items() const {
+	return _data.items;
+}
+
+bool ForwardPanel::empty() const {
+	return _data.items.empty();
+}
+
+void ForwardPanel::editOptions(
+		not_null<Window::SessionController*> controller) {
+	using Options = Data::ForwardOptions;
+	const auto now = _data.options;
+	const auto count = _data.items.size();
+	const auto dropNames = (now != Options::PreserveInfo);
+	const auto hasCaptions = [&] {
+		for (const auto item : _data.items) {
+			if (const auto media = item->media()) {
+				if (!item->originalText().text.isEmpty()
+					&& media->allowsEditCaption()) {
+					return true;
+				}
+			}
+		}
+		return false;
+	}();
+	const auto hasOnlyForcedForwardedInfo = [&] {
+		if (hasCaptions) {
+			return false;
+		}
+		for (const auto item : _data.items) {
+			if (const auto media = item->media()) {
+				if (!media->forceForwardedInfo()) {
+					return false;
+				}
+			} else {
+				return false;
+			}
+		}
+		return true;
+	}();
+	const auto dropCaptions = (now == Options::NoNamesAndCaptions);
+	const auto weak = base::make_weak(this);
+	const auto changeRecipient = crl::guard(this, [=] {
+		if (_data.items.empty()) {
+			return;
+		}
+		auto data = base::take(_data);
+		_to->owningHistory()->setForwardDraft(_to->topicRootId(), {});
+		Window::ShowForwardMessagesBox(controller, {
+			.ids = _to->owner().itemsToIds(data.items),
+			.options = data.options,
+		});
+	});
+	if (hasOnlyForcedForwardedInfo) {
+		changeRecipient();
+		return;
+	}
+	const auto optionsChanged = crl::guard(weak, [=](
+			Ui::ForwardOptions options) {
+		if (_data.items.empty()) {
+			return;
+		}
+		const auto newOptions = (options.hasCaptions
+			&& options.dropCaptions)
+			? Options::NoNamesAndCaptions
+			: options.dropNames
+			? Options::NoSenderNames
+			: Options::PreserveInfo;
+		if (_data.options != newOptions) {
+			_data.options = newOptions;
+			_to->owningHistory()->setForwardDraft(_to->topicRootId(), {
+				.ids = _to->owner().itemsToIds(_data.items),
+				.options = newOptions,
+			});
+			_repaint();
+		}
+	});
+	controller->show(Box(
+		Ui::ForwardOptionsBox,
+		count,
+		Ui::ForwardOptions{
+			.dropNames = dropNames,
+			.hasCaptions = hasCaptions,
+			.dropCaptions = dropCaptions,
+		},
+		optionsChanged,
+		changeRecipient));
+}
+
+void ForwardPanel::paint(
+		Painter &p,
+		int x,
+		int y,
+		int available,
+		int outerWidth) const {
+	if (empty()) {
+		return;
+	}
+	const_cast<ForwardPanel*>(this)->checkTexts();
+	const auto firstItem = _data.items.front();
+	const auto firstMedia = firstItem->media();
+	const auto hasPreview = (_data.items.size() < 2)
+		&& firstMedia
+		&& firstMedia->hasReplyPreview();
+	const auto preview = hasPreview ? firstMedia->replyPreview() : nullptr;
+	if (preview) {
+		auto to = QRect(
+			x,
+			y + st::msgReplyPadding.top(),
+			st::msgReplyBarSize.height(),
+			st::msgReplyBarSize.height());
+		if (preview->width() == preview->height()) {
+			p.drawPixmap(to.x(), to.y(), preview->pix());
+		} else {
+			auto from = (preview->width() > preview->height())
+				? QRect(
+					(preview->width() - preview->height()) / 2,
+					0,
+					preview->height(),
+					preview->height())
+				: QRect(
+					0,
+					(preview->height() - preview->width()) / 2,
+					preview->width(),
+					preview->width());
+			p.drawPixmap(to, preview->pix(), from);
+		}
+		const auto skip = st::msgReplyBarSize.height()
+			+ st::msgReplyBarSkip
+			- st::msgReplyBarSize.width()
+			- st::msgReplyBarPos.x();
+		x += skip;
+		available -= skip;
+	}
+	p.setPen(st::historyReplyNameFg);
+	_from.drawElided(
+		p,
+		x,
+		y + st::msgReplyPadding.top(),
+		available);
+	p.setPen(st::historyComposeAreaFg);
+	_text.draw(p, {
+		.position = QPoint(
+			x,
+			y + st::msgReplyPadding.top() + st::msgServiceNameFont->height),
+		.availableWidth = available,
+		.palette = &st::historyComposeAreaPalette,
+		.spoiler = Ui::Text::DefaultSpoilerCache(),
+		.elisionLines = 1,
+	});
+}
+
+} // namespace HistoryView::Controls

Telegram/SourceFiles/history/view/controls/history_view_forward_panel.h

@@ -0,0 +1,64 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "history/history.h"
+#include "ui/text/text.h"
+#include "base/weak_ptr.h"
+
+class Painter;
+class HistoryItem;
+
+namespace Data {
+class Thread;
+} // namespace Data
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace HistoryView::Controls {
+
+class ForwardPanel final : public base::has_weak_ptr {
+public:
+	explicit ForwardPanel(Fn<void()> repaint);
+
+	void update(Data::Thread *to, Data::ResolvedForwardDraft draft);
+	void paint(
+		Painter &p,
+		int x,
+		int y,
+		int available,
+		int outerWidth) const;
+
+	[[nodiscard]] rpl::producer<> itemsUpdated() const;
+
+	void editOptions(not_null<Window::SessionController*> controller);
+
+	[[nodiscard]] const HistoryItemsList &items() const;
+	[[nodiscard]] bool empty() const;
+
+private:
+	void checkTexts();
+	void updateTexts();
+	void refreshTexts();
+	void itemRemoved(not_null<const HistoryItem*> item);
+
+	Fn<void()> _repaint;
+
+	Data::Thread *_to = nullptr;
+	Data::ResolvedForwardDraft _data;
+	rpl::lifetime _dataLifetime;
+
+	rpl::event_stream<> _itemsUpdated;
+	Ui::Text::String _from, _text;
+	int _nameVersion = 0;
+
+};
+
+} // namespace HistoryView::Controls

Telegram/SourceFiles/history/view/history_view_replies_section.cpp

@@ -669,6 +669,7 @@ void RepliesWidget::setupComposeControls() {
 
 	_composeControls->setHistory({
 		.history = _history.get(),
+		.topicRootId = _topic ? _topic->rootId() : MsgId(0),
 		.showSlowmodeError = [=] { return showSlowmodeError(); },
 		.sendActionFactory = [=] { return prepareSendAction({}); },
 		.slowmodeSecondsLeft = std::move(slowmodeSecondsLeft),
@@ -708,6 +709,7 @@ void RepliesWidget::setupComposeControls() {
 			return;
 		}
 		listSendBotCommand(command, FullMsgId());
+		session().api().finishForwarding(prepareSendAction({}));
 	}, lifetime());
 
 	const auto saveEditMsgRequestId = lifetime().make_state<mtpRequestId>(0);

Telegram/SourceFiles/inline_bots/bot_attach_web_view.cpp

@@ -132,16 +132,17 @@ struct ParsedBot {
 void ShowChooseBox(
 		not_null<Window::SessionController*> controller,
 		PeerTypes types,
-		Fn<void(not_null<PeerData*>)> callback) {
+		Fn<void(not_null<Data::Thread*>)> callback) {
 	const auto weak = std::make_shared<QPointer<Ui::BoxContent>>();
-	auto done = [=](not_null<PeerData*> peer) mutable {
+	auto done = [=](not_null<Data::Thread*> thread) mutable {
 		if (const auto strong = *weak) {
 			strong->closeBox();
 		}
-		callback(peer);
+		callback(thread);
 	};
-	auto filter = [=](not_null<PeerData*> peer) -> bool {
-		if (!peer->canWrite()) { // #TODO forum forward
+	auto filter = [=](not_null<Data::Thread*> thread) -> bool {
+		const auto peer = thread->owningHistory()->peer;
+		if (!thread->canWrite()) {
 			return false;
 		} else if (const auto user = peer->asUser()) {
 			if (user->isBot()) {
@@ -577,16 +578,15 @@ void AttachWebView::requestAddToMenu(
 		const auto open = [=](PeerTypes types) {
 			if (const auto useTypes = chooseTypes & types) {
 				if (const auto strong = chooseController.get()) {
-					const auto callback = [=](not_null<PeerData*> peer) {
-						const auto history = peer->owner().history(peer);
-						strong->showPeerHistory(history);
+					const auto done = [=](not_null<Data::Thread*> thread) {
+						strong->showThread(thread);
 						request(
 							nullptr,
-							Api::SendAction(history),
+							Api::SendAction(thread),
 							bot,
 							{ .startCommand = startCommand });
 					};
-					ShowChooseBox(strong, useTypes, callback);
+					ShowChooseBox(strong, useTypes, done);
 				}
 				return true;
 			} else if (!contextAction) {

Telegram/SourceFiles/mainwidget.cpp

@@ -51,6 +51,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/window_session_controller.h"
 #include "window/window_history_hider.h"
 #include "window/window_controller.h"
+#include "window/window_peer_menu.h"
 #include "window/themes/window_theme.h"
 #include "chat_helpers/tabbed_selector.h" // TabbedSelector::refreshStickers
 #include "chat_helpers/message_field.h"
@@ -307,27 +308,23 @@ MainWidget::MainWidget(
 
 	session().changes().historyUpdates(
 		Data::HistoryUpdate::Flag::MessageSent
-		| Data::HistoryUpdate::Flag::LocalDraftSet
 	) | rpl::start_with_next([=](const Data::HistoryUpdate &update) {
 		const auto history = update.history;
-		if (update.flags & Data::HistoryUpdate::Flag::MessageSent) {
-			history->forgetScrollState();
-			if (const auto from = history->peer->migrateFrom()) {
-				auto &owner = history->owner();
-				if (const auto migrated = owner.historyLoaded(from)) {
-					migrated->forgetScrollState();
-				}
+		history->forgetScrollState();
+		if (const auto from = history->peer->migrateFrom()) {
+			auto &owner = history->owner();
+			if (const auto migrated = owner.historyLoaded(from)) {
+				migrated->forgetScrollState();
 			}
 		}
-		if (update.flags & Data::HistoryUpdate::Flag::LocalDraftSet) {
-			const auto opened = (_history->peer() == history->peer.get());
-			if (opened) {
-				_history->applyDraft();
-			} else {
-				Ui::showPeerHistory(history, ShowAtUnreadMsgId);
-			}
-			_controller->hideLayer();
-		}
+	}, lifetime());
+
+	session().changes().entryUpdates(
+		Data::EntryUpdate::Flag::LocalDraftSet
+	) | rpl::start_with_next([=](const Data::EntryUpdate &update) {
+		controller->showThread(update.entry->asThread(), ShowAtUnreadMsgId);
+		_history->applyDraft(); // #TODO forum drop
+		controller->hideLayer();
 	}, lifetime());
 
 	// MSVC BUG + REGRESSION rpl::mappers::tuple :(
@@ -515,36 +512,38 @@ void MainWidget::floatPlayerDoubleClickEvent(
 	_controller->showMessage(item);
 }
 
-bool MainWidget::setForwardDraft(PeerId peerId, Data::ForwardDraft &&draft) {
-	Expects(peerId != 0);
-
-	const auto peer = session().data().peer(peerId);
+bool MainWidget::setForwardDraft(
+		not_null<Data::Thread*> thread,
+		Data::ForwardDraft &&draft) {
+	const auto history = thread->owningHistory();
+	const auto peer = history->peer;
 	const auto items = session().data().idsToItems(draft.ids);
+	const auto topicRootId = thread->topicRootId();
 	const auto error = GetErrorTextForSending(
-		peer, // #TODO forum forward
-		{ .forward = &items, .ignoreSlowmodeCountdown = true });
+		history->peer,
+		{
+			.topicRootId = topicRootId,
+			.forward = &items,
+			.ignoreSlowmodeCountdown = true,
+		});
 	if (!error.isEmpty()) {
 		Ui::show(Ui::MakeInformBox(error), Ui::LayerOption::KeepOther);
 		return false;
 	}
 
-	peer->owner().history(peer)->setForwardDraft(std::move(draft));
-	_controller->showPeerHistory(
-		peer,
-		SectionShow::Way::Forward,
-		ShowAtUnreadMsgId);
-	_history->cancelReply();
+	history->setForwardDraft(topicRootId, std::move(draft));
+	_controller->showThread(
+		thread,
+		ShowAtUnreadMsgId,
+		SectionShow::Way::Forward);
 	return true;
 }
 
 bool MainWidget::shareUrl(
-		PeerId peerId,
+		not_null<Data::Thread*> thread,
 		const QString &url,
 		const QString &text) const {
-	Expects(peerId != 0);
-
-	const auto peer = session().data().peer(peerId);
-	if (!peer->canWrite()) { // #TODO forum forward
+	if (!thread->canWrite()) {
 		_controller->show(Ui::MakeInformBox(tr::lng_share_cant()));
 		return false;
 	}
@@ -557,8 +556,8 @@ bool MainWidget::shareUrl(
 		int(url.size()) + 1 + int(text.size()),
 		QFIXED_MAX
 	};
-	const auto history = peer->owner().history(peer);
-	const auto topicRootId = 0;
+	const auto history = thread->owningHistory();
+	const auto topicRootId = thread->topicRootId();
 	history->setLocalDraft(std::make_unique<Data::Draft>(
 		textWithTags,
 		0, // replyTo
@@ -566,23 +565,19 @@ bool MainWidget::shareUrl(
 		cursor,
 		Data::PreviewState::Allowed));
 	history->clearLocalEditDraft(topicRootId);
-	history->session().changes().historyUpdated(
-		history,
-		Data::HistoryUpdate::Flag::LocalDraftSet);
+	history->session().changes().entryUpdated(
+		thread,
+		Data::EntryUpdate::Flag::LocalDraftSet);
 	return true;
 }
 
 bool MainWidget::inlineSwitchChosen(
-		PeerId peerId,
+		not_null<Data::Thread*> thread,
 		const QString &botAndQuery) const {
-	Expects(peerId != 0);
-
-	const auto peer = session().data().peer(peerId);
-	if (!peer->canWrite()) { // #TODO forum forward
+	if (!thread->canWrite()) { // #TODO forum forward
 		Ui::show(Ui::MakeInformBox(tr::lng_inline_switch_cant()));
 		return false;
 	}
-	const auto h = peer->owner().history(peer);
 	const auto textWithTags = TextWithTags{
 		botAndQuery,
 		TextWithTags::Tags(),
@@ -592,61 +587,74 @@ bool MainWidget::inlineSwitchChosen(
 		int(botAndQuery.size()),
 		QFIXED_MAX
 	};
-	const auto topicRootId = 0;
-	h->setLocalDraft(std::make_unique<Data::Draft>(
+	const auto history = thread->owningHistory();
+	const auto topicRootId = thread->topicRootId();
+	history->setLocalDraft(std::make_unique<Data::Draft>(
 		textWithTags,
 		0, // replyTo
 		topicRootId,
 		cursor,
 		Data::PreviewState::Allowed));
-	h->clearLocalEditDraft(topicRootId);
-	h->session().changes().historyUpdated(
-		h,
-		Data::HistoryUpdate::Flag::LocalDraftSet);
+	history->clearLocalEditDraft(topicRootId);
+	thread->session().changes().entryUpdated(
+		thread,
+		Data::EntryUpdate::Flag::LocalDraftSet);
 	return true;
 }
 
-bool MainWidget::sendPaths(PeerId peerId) {
-	Expects(peerId != 0);
-
-	auto peer = session().data().peer(peerId);
-	if (!peer->canWrite()) { // #TODO forum forward
+bool MainWidget::sendPaths(not_null<Data::Thread*> thread) {
+	if (!thread->canWrite()) {
 		Ui::show(Ui::MakeInformBox(tr::lng_forward_send_files_cant()));
 		return false;
 	} else if (const auto error = Data::RestrictionError(
-			peer,
+			thread->owningHistory()->peer,
 			ChatRestriction::SendMedia)) {
 		Ui::show(Ui::MakeInformBox(*error));
 		return false;
+	} else {
+		controller()->showThread(
+			thread,
+			ShowAtTheEndMsgId,
+			Window::SectionShow::Way::ClearStack);
 	}
-	Ui::showPeerHistory(peer, ShowAtTheEndMsgId);
-	return _history->confirmSendingFiles(cSendPaths());
+	// #TODO forum drop
+	return (controller()->activeChatCurrent().thread() == thread)
+		&& _history->confirmSendingFiles(cSendPaths());
 }
 
 void MainWidget::onFilesOrForwardDrop(
-		const PeerId &peerId,
+		not_null<Data::Thread*> thread,
 		const QMimeData *data) {
-	Expects(peerId != 0);
-
 	if (data->hasFormat(qsl("application/x-td-forward"))) {
 		auto draft = Data::ForwardDraft{
 			.ids = session().data().takeMimeForwardIds(),
 		};
-		if (!setForwardDraft(peerId, std::move(draft))) {
-			// We've already released the mouse button, so the forwarding is cancelled.
-			if (_hider) {
-				_hider->startHide();
-				clearHider(_hider);
-			}
-		}
-	} else {
-		auto peer = session().data().peer(peerId);
-		if (!peer->canWrite()) { // #TODO forum forward
-			Ui::show(Ui::MakeInformBox(tr::lng_forward_send_files_cant()));
+		const auto history = thread->asHistory();
+		if (const auto forum = history ? history->peer->forum() : nullptr) {
+			Window::ShowForwardMessagesBox(
+				_controller,
+				std::move(draft),
+				forum);
+		} else if (setForwardDraft(thread, std::move(draft))) {
 			return;
 		}
-		Ui::showPeerHistory(peer, ShowAtTheEndMsgId);
-		_history->confirmSendingFiles(data);
+		// We've already released the mouse button,
+		// so the forwarding is cancelled.
+		if (_hider) {
+			_hider->startHide();
+			clearHider(_hider);
+		}
+	} else if (!thread->canWrite()) {
+		Ui::show(Ui::MakeInformBox(tr::lng_forward_send_files_cant()));
+	} else {
+		controller()->showThread(
+			thread,
+			ShowAtTheEndMsgId,
+			Window::SectionShow::Way::ClearStack);
+		if (thread->asHistory()) {
+			// #TODO forum drop
+			_history->confirmSendingFiles(data);
+		}
 	}
 }
 
@@ -735,8 +743,9 @@ void MainWidget::hiderLayer(base::unique_qptr<Window::HistoryHider> hider) {
 }
 
 void MainWidget::showForwardLayer(Data::ForwardDraft &&draft) {
-	auto callback = [=, draft = std::move(draft)](PeerId peer) mutable {
-		return setForwardDraft(peer, std::move(draft));
+	auto callback = [=, draft = std::move(draft)](
+			not_null<Data::Thread*> thread) mutable {
+		return setForwardDraft(thread, std::move(draft));
 	};
 	hiderLayer(base::make_unique_q<Window::HistoryHider>(
 		this,
@@ -749,7 +758,7 @@ void MainWidget::showSendPathsLayer() {
 	hiderLayer(base::make_unique_q<Window::HistoryHider>(
 		this,
 		tr::lng_forward_choose(tr::now),
-		[=](PeerId peer) { return sendPaths(peer); },
+		[=](not_null<Data::Thread*> thread) { return sendPaths(thread); },
 		_controller->adaptive().oneColumnValue()));
 	if (_hider) {
 		connect(_hider, &QObject::destroyed, [] {
@@ -763,8 +772,8 @@ void MainWidget::shareUrlLayer(const QString &url, const QString &text) {
 	if (url.trimmed().startsWith('@')) {
 		return;
 	}
-	auto callback = [=](PeerId peer) {
-		return shareUrl(peer, url, text);
+	auto callback = [=](not_null<Data::Thread*> thread) {
+		return shareUrl(thread, url, text);
 	};
 	hiderLayer(base::make_unique_q<Window::HistoryHider>(
 		this,
@@ -774,8 +783,8 @@ void MainWidget::shareUrlLayer(const QString &url, const QString &text) {
 }
 
 void MainWidget::inlineSwitchLayer(const QString &botAndQuery) {
-	auto callback = [=](PeerId peer) {
-		return inlineSwitchChosen(peer, botAndQuery);
+	auto callback = [=](not_null<Data::Thread*> thread) {
+		return inlineSwitchChosen(thread, botAndQuery);
 	};
 	hiderLayer(base::make_unique_q<Window::HistoryHider>(
 		this,
@@ -788,6 +797,14 @@ bool MainWidget::selectingPeer() const {
 	return _hider ? true : false;
 }
 
+void MainWidget::clearSelectingPeer() {
+	if (_hider) {
+		_hider->startHide();
+		_hider.release();
+		controller()->setSelectingPeer(false);
+	}
+}
+
 void MainWidget::sendBotCommand(Bot::SendCommandRequest request) {
 	const auto type = _mainSection
 		? _mainSection->sendBotCommand(request)
@@ -1241,16 +1258,20 @@ void MainWidget::setInnerFocus() {
 	}
 }
 
-void MainWidget::choosePeer(PeerId peerId, MsgId showAtMsgId) {
+void MainWidget::chooseThread(
+		not_null<Data::Thread*> thread,
+		MsgId showAtMsgId) {
 	if (selectingPeer()) {
-		_hider->offerPeer(peerId);
-	} else if (peerId) {
-		Ui::showPeerHistory(session().data().peer(peerId), showAtMsgId);
+		_hider->offerThread(thread);
 	} else {
-		Ui::showChatsList(&session());
+		controller()->showThread(thread, showAtMsgId);
 	}
 }
 
+void MainWidget::chooseThread(not_null<PeerData*> peer, MsgId showAtMsgId) {
+	chooseThread(peer->owner().history(peer), showAtMsgId);
+}
+
 void MainWidget::clearBotStartToken(PeerData *peer) {
 	if (peer && peer->isUser() && peer->asUser()->isBot()) {
 		peer->asUser()->botInfo->startToken = QString();
@@ -1402,11 +1423,6 @@ void MainWidget::ui_showPeerHistory(
 	if (params.activation != anim::activation::background) {
 		controller()->window().hideSettingsAndLayer();
 	}
-	if (_hider) {
-		_hider->startHide();
-		_hider.release();
-		controller()->setSelectingPeer(false);
-	}
 
 	auto animatedShow = [&] {
 		if (_a_show.animating()

Telegram/SourceFiles/mainwidget.h

@@ -42,6 +42,7 @@ class Session;
 } // namespace Main
 
 namespace Data {
+class Thread;
 class WallPaper;
 struct ForwardDraft;
 } // namespace Data
@@ -174,10 +175,15 @@ public:
 	void shareUrlLayer(const QString &url, const QString &text);
 	void inlineSwitchLayer(const QString &botAndQuery);
 	void hiderLayer(base::unique_qptr<Window::HistoryHider> h);
-	bool setForwardDraft(PeerId peer, Data::ForwardDraft &&draft);
-	bool sendPaths(PeerId peerId);
-	void onFilesOrForwardDrop(const PeerId &peer, const QMimeData *data);
+	bool setForwardDraft(
+		not_null<Data::Thread*> thread,
+		Data::ForwardDraft &&draft);
+	bool sendPaths(not_null<Data::Thread*> thread);
+	void onFilesOrForwardDrop(
+		not_null<Data::Thread*> thread,
+		const QMimeData *data);
 	bool selectingPeer() const;
+	void clearSelectingPeer();
 
 	void sendBotCommand(Bot::SendCommandRequest request);
 	void hideSingleUseKeyboard(PeerData *peer, MsgId replyTo);
@@ -192,8 +198,9 @@ public:
 	void checkChatBackground();
 	Image *newBackgroundThumb();
 
-	// Does offerPeer or showPeerHistory.
-	void choosePeer(PeerId peerId, MsgId showAtMsgId);
+	// Does offerThread or showThread.
+	void chooseThread(not_null<Data::Thread*> thread, MsgId showAtMsgId);
+	void chooseThread(not_null<PeerData*> peer, MsgId showAtMsgId);
 	void clearBotStartToken(PeerData *peer);
 
 	void ctrlEnterSubmitUpdated();
@@ -251,10 +258,12 @@ private:
 		-> std::shared_ptr<Window::SectionMemento>;
 
 	bool shareUrl(
-		PeerId peerId,
+		not_null<Data::Thread*> thread,
 		const QString &url,
 		const QString &text) const;
-	bool inlineSwitchChosen(PeerId peerId, const QString &botAndQuery) const;
+	bool inlineSwitchChosen(
+		not_null<Data::Thread*> thread,
+		const QString &botAndQuery) const;
 
 	void setupConnectingWidget();
 	void createPlayer();

Telegram/SourceFiles/platform/mac/touchbar/items/mac_pinned_chats_item.mm

@@ -778,13 +778,14 @@ TimeId CalculateOnlineTill(not_null<PeerData*> peer) {
 		}
 	};
 	Core::Sandbox::Instance().customEnterFromEventLoop([=] {
-		(_hasArchive && (index == (_selfUnpinned ? -2 : -1)))
-			? openFolder()
-			: controller->content()->choosePeer(
-				(_selfUnpinned && index == -1)
-					? _session->userPeerId()
-					: peer->id,
-				ShowAtUnreadMsgId);
+		if (_hasArchive && (index == (_selfUnpinned ? -2 : -1))) {
+			openFolder();
+		} else {
+			const auto chosen = (_selfUnpinned && index == -1)
+				? _session->user()
+				: peer;
+			controller->content()->chooseThread(chosen, ShowAtUnreadMsgId);
+		}
 	});
 }
 

Telegram/SourceFiles/window/window_history_hider.cpp

@@ -20,7 +20,7 @@ namespace Window {
 HistoryHider::HistoryHider(
 	QWidget *parent,
 	const QString &text,
-	Fn<bool(PeerId)> confirm,
+	Fn<bool(not_null<Data::Thread*>)> confirm,
 	rpl::producer<bool> oneColumnValue)
 : RpWidget(parent)
 , _text(text)
@@ -122,8 +122,8 @@ void HistoryHider::updateControlsGeometry() {
 	_box = QRect((width() - w) / 2, (height() - h) / 2, w, h);
 }
 
-void HistoryHider::offerPeer(PeerId peer) {
-	if (_confirm(peer)) {
+void HistoryHider::offerThread(not_null<Data::Thread*> thread) {
+	if (_confirm(thread)) {
 		startHide();
 	}
 }

Telegram/SourceFiles/window/window_history_hider.h

@@ -10,6 +10,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/rp_widget.h"
 #include "ui/effects/animations.h"
 
+namespace Data {
+class Thread;
+} // namespace Data
+
 namespace Ui {
 class RoundButton;
 } // namespace Ui
@@ -33,10 +37,10 @@ public:
 	HistoryHider(
 		QWidget *parent,
 		const QString &text,
-		Fn<bool(PeerId)> confirm,
+		Fn<bool(not_null<Data::Thread*>)> confirm,
 		rpl::producer<bool> oneColumnValue);
 
-	void offerPeer(PeerId peer);
+	void offerThread(not_null<Data::Thread*> thread);
 
 	void startHide();
 	void confirm();
@@ -57,7 +61,7 @@ private:
 	void animationCallback();
 
 	QString _text;
-	Fn<bool(PeerId)> _confirm;
+	Fn<bool(not_null<Data::Thread*>)> _confirm;
 	Ui::Animations::Simple _a_opacity;
 
 	QRect _box;

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -691,9 +691,8 @@ void MainMenu::setupMenu() {
 			tr::lng_saved_messages(),
 			{ &st::settingsIconSavedMessages, kIconLightBlue }
 		)->setClickedCallback([=] {
-			controller->content()->choosePeer(
-				controller->session().userPeerId(),
-				ShowAtUnreadMsgId);
+			const auto self = controller->session().user();
+			controller->content()->chooseThread(self, ShowAtUnreadMsgId);
 		});
 	} else {
 		addAction(

Telegram/SourceFiles/window/window_peer_menu.cpp

@@ -188,6 +188,27 @@ void PeerMenuAddMuteSubmenuAction(
 	}
 }
 
+void ForwardToSelf(
+		not_null<Window::SessionNavigation*> navigation,
+		const Data::ForwardDraft &draft) {
+	const auto content = navigation->parentController()->content();
+	const auto session = &navigation->session();
+	const auto history = session->data().history(session->user());
+	auto resolved = history->resolveForwardDraft(draft);
+	if (!resolved.items.empty()) {
+		auto action = Api::SendAction(history);
+		action.clearDraft = false;
+		action.generateLocal = false;
+		const auto weakContent = Ui::MakeWeak(content);
+		session->api().forwardMessages(
+			std::move(resolved),
+			action,
+			crl::guard(weakContent, [w = weakContent] {
+				Ui::Toast::Show(w, tr::lng_share_done(tr::now));
+			}));
+	}
+}
+
 class Filler {
 public:
 	Filler(
@@ -1227,14 +1248,15 @@ void PeerMenuShareContactBox(
 		not_null<UserData*> user) {
 	// There is no async to make weak from controller.
 	const auto weak = std::make_shared<QPointer<Ui::BoxContent>>();
-	auto callback = [=](not_null<PeerData*> peer) {
-		if (!peer->canWrite()) { // #TODO forum forward
+	auto callback = [=](not_null<Data::Thread*> thread) {
+		const auto peer = thread->owningHistory()->peer;
+		if (!thread->canWrite()) {
 			navigation->parentController()->show(
 				Ui::MakeInformBox(tr::lng_forward_share_cant()),
 				Ui::LayerOption::KeepOther);
 			return;
 		} else if (peer->isSelf()) {
-			auto action = Api::SendAction(peer->owner().history(peer));
+			auto action = Api::SendAction(thread);
 			action.clearDraft = false;
 			user->session().api().shareContact(user, action);
 			Ui::Toast::Show(
@@ -1245,24 +1267,29 @@ void PeerMenuShareContactBox(
 			}
 			return;
 		}
+		const auto title = thread->asTopic()
+			? thread->asTopic()->title()
+			: peer->name();
 		auto recipient = peer->isUser()
-			? peer->name()
-			: '\xAB' + peer->name() + '\xBB';
+			? title
+			: ('\xAB' + title + '\xBB');
+		const auto weak = base::make_weak(thread);
 		navigation->parentController()->show(
 			Ui::MakeConfirmBox({
 				.text = tr::lng_forward_share_contact(
 					tr::now,
 					lt_recipient,
 					recipient),
-				.confirmed = [peer, user, navigation](Fn<void()> &&close) {
-					const auto history = peer->owner().history(peer);
-					navigation->showPeerHistory(
-						history,
-						Window::SectionShow::Way::ClearStack,
-						ShowAtTheEndMsgId);
-					auto action = Api::SendAction(history);
-					action.clearDraft = false;
-					user->session().api().shareContact(user, action);
+				.confirmed = [weak, user, navigation](Fn<void()> &&close) {
+					if (const auto strong = weak.get()) {
+						navigation->showThread(
+							strong,
+							ShowAtTheEndMsgId,
+							Window::SectionShow::Way::ClearStack);
+						auto action = Api::SendAction(strong);
+						action.clearDraft = false;
+						strong->session().api().shareContact(user, action);
+					}
 					close();
 				},
 				.confirmText = tr::lng_forward_send(),
@@ -1470,32 +1497,19 @@ QPointer<Ui::BoxContent> ShowForwardMessagesBox(
 		Data::ForwardDraft &&draft,
 		FnMut<void()> &&successCallback) {
 	const auto weak = std::make_shared<QPointer<Ui::BoxContent>>();
-	auto callback = [
+	auto chosen = [
 		draft = std::move(draft),
 		callback = std::move(successCallback),
 		weak,
 		navigation
-	](not_null<PeerData*> peer) mutable {
+	](not_null<Data::Thread*> thread) mutable {
+		const auto peer = thread->owningHistory()->peer;
 		const auto content = navigation->parentController()->content();
 		if (peer->isSelf()
 			&& !draft.ids.empty()
 			&& draft.ids.front().peer != peer->id) {
-			const auto history = peer->owner().history(peer);
-			auto resolved = history->resolveForwardDraft(draft);
-			if (!resolved.items.empty()) {
-				const auto api = &peer->session().api();
-				auto action = Api::SendAction(peer->owner().history(peer));
-				action.clearDraft = false;
-				action.generateLocal = false;
-				const auto weakContent = Ui::MakeWeak(content);
-				api->forwardMessages(
-					std::move(resolved),
-					action,
-					crl::guard(weakContent, [w = weakContent] {
-						Ui::Toast::Show(w, tr::lng_share_done(tr::now));
-					}));
-			}
-		} else if (!content->setForwardDraft(peer->id, std::move(draft))) {
+			ForwardToSelf(navigation, draft);
+		} else if (!content->setForwardDraft(thread, std::move(draft))) {
 			return;
 		}
 		if (const auto strong = *weak) {
@@ -1513,7 +1527,7 @@ QPointer<Ui::BoxContent> ShowForwardMessagesBox(
 	*weak = navigation->parentController()->show(Box<PeerListBox>(
 		std::make_unique<ChooseRecipientBoxController>(
 			&navigation->session(),
-			std::move(callback)),
+			std::move(chosen)),
 		std::move(initBox)), Ui::LayerOption::KeepOther);
 	return weak->data();
 }
@@ -1528,6 +1542,50 @@ QPointer<Ui::BoxContent> ShowForwardMessagesBox(
 		std::move(successCallback));
 }
 
+QPointer<Ui::BoxContent> ShowForwardMessagesBox(
+		not_null<Window::SessionNavigation*> navigation,
+		Data::ForwardDraft &&draft,
+		not_null<Data::Forum*> forum,
+		FnMut<void()> &&successCallback) {
+	const auto weak = std::make_shared<QPointer<Ui::BoxContent>>();
+	auto chosen = [
+		draft = std::move(draft),
+		callback = std::move(successCallback),
+		weak,
+		navigation
+	](not_null<Data::ForumTopic*> topic) mutable {
+		const auto content = navigation->parentController()->content();
+		if (!content->setForwardDraft(topic, std::move(draft))) {
+			return;
+		} else if (const auto strong = *weak) {
+			strong->closeBox();
+		}
+		if (callback) {
+			callback();
+		}
+	};
+	auto initBox = [](not_null<PeerListBox*> box) {
+		box->addButton(tr::lng_cancel(), [box] {
+			box->closeBox();
+		});
+	};
+	*weak = navigation->parentController()->show(Box<PeerListBox>(
+		std::make_unique<ChooseTopicBoxController>(
+			forum,
+			std::move(chosen)),
+		[=](not_null<PeerListBox*> box) {
+			box->addButton(tr::lng_cancel(), [=] {
+				box->closeBox();
+			});
+
+			forum->destroyed(
+			) | rpl::start_with_next([=] {
+				box->closeBox();
+			}, box->lifetime());
+		}));
+	return weak->data();
+}
+
 QPointer<Ui::BoxContent> ShowSendNowMessagesBox(
 		not_null<Window::SessionNavigation*> navigation,
 		not_null<History*> history,

Telegram/SourceFiles/window/window_peer_menu.h

@@ -21,6 +21,7 @@ class GenericBox;
 } // namespace Ui
 
 namespace Data {
+class Forum;
 class Folder;
 class Session;
 struct ForwardDraft;
@@ -121,6 +122,11 @@ QPointer<Ui::BoxContent> ShowForwardMessagesBox(
 	not_null<Window::SessionNavigation*> navigation,
 	MessageIdsList &&items,
 	FnMut<void()> &&successCallback = nullptr);
+QPointer<Ui::BoxContent> ShowForwardMessagesBox(
+	not_null<Window::SessionNavigation*> navigation,
+	Data::ForwardDraft &&draft,
+	not_null<Data::Forum*> forum,
+	FnMut<void()> &&successCallback = nullptr);
 
 QPointer<Ui::BoxContent> ShowSendNowMessagesBox(
 	not_null<Window::SessionNavigation*> navigation,

Telegram/SourceFiles/window/window_session_controller.cpp

@@ -622,15 +622,29 @@ void SessionNavigation::showPeerInfo(
 
 void SessionNavigation::showTopic(
 		not_null<Data::ForumTopic*> topic,
-		MsgId commentId,
+		MsgId itemId,
 		const SectionShow &params) {
 	return showRepliesForMessage(
 		topic->history(),
 		topic->rootId(),
-		commentId,
+		itemId,
 		params);
 }
 
+void SessionNavigation::showThread(
+		not_null<Data::Thread*> thread,
+		MsgId itemId,
+		const SectionShow &params) {
+	if (const auto topic = thread->asTopic()) {
+		showTopic(topic, itemId, params);
+	} else {
+		showPeerHistory(thread->asHistory(), params, itemId);
+	}
+	if (parentController()->activeChatCurrent().thread() == thread) {
+		parentController()->content()->clearSelectingPeer();
+	}
+}
+
 void SessionNavigation::showPeerInfo(
 		not_null<PeerData*> peer,
 		const SectionShow &params) {

Telegram/SourceFiles/window/window_session_controller.h

@@ -216,7 +216,11 @@ public:
 		const SectionShow &params = SectionShow());
 	void showTopic(
 		not_null<Data::ForumTopic*> topic,
-		MsgId commentId = 0,
+		MsgId itemId = 0,
+		const SectionShow &params = SectionShow());
+	void showThread(
+		not_null<Data::Thread*> thread,
+		MsgId itemId = 0,
 		const SectionShow &params = SectionShow());
 
 	void showPeerInfo(