Add monoforum sender bar divider.

Telegram/Resources/langs/lang.strings

@@ -6091,6 +6091,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_forum_messages#other" = "{count} messages";
 "lng_forum_show_topics_list" = "Show Topics List";
 
+"lng_monoforum_choose_to_reply" = "Choose a message to reply.";
+
 "lng_request_peer_requirements" = "Requirements";
 "lng_request_peer_rights" = "You must have these admin rights: {rights}.";
 "lng_request_peer_rights_and" = "{rights} and {last}";

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -2936,7 +2936,9 @@ bool EditPeerInfoBox::Available(not_null<PeerData*> peer) {
 
 		// canViewAdmins() is removed, because in supergroups it is
 		// always true and in channels it is equal to canViewBanned().
-
+		if (channel->isMonoforum()) {
+			return false;
+		}
 		return false
 			//|| channel->canViewMembers()
 			//|| channel->canViewAdmins()

Telegram/SourceFiles/data/data_channel.cpp

@@ -341,12 +341,6 @@ ChannelData *ChannelData::monoforumLink() const {
 	return _monoforumLink;
 }
 
-bool ChannelData::requiresMonoforumPeer() const {
-	return isMonoforum()
-		&& _monoforumLink
-		&& (_monoforumLink->amCreator() || _monoforumLink->hasAdminRights());
-}
-
 void ChannelData::setMembersCount(int newMembersCount) {
 	if (_membersCount != newMembersCount) {
 		if (isMegagroup()

Telegram/SourceFiles/data/data_channel.h

@@ -429,7 +429,6 @@ public:
 
 	void setMonoforumLink(ChannelData *link);
 	[[nodiscard]] ChannelData *monoforumLink() const;
-	[[nodiscard]] bool requiresMonoforumPeer() const;
 
 	void ptsInit(int32 pts) {
 		_ptsWaiter.init(pts);

Telegram/SourceFiles/data/data_chat_participant_status.h

@@ -190,18 +190,21 @@ struct SendError {
 	struct Args {
 		QString text;
 		int boostsToLift = 0;
+		bool monoforumAdmin = false;
 		bool premiumToLift = false;
 		bool frozen = false;
 	};
 	SendError(Args &&args)
 	: text(std::move(args.text))
 	, boostsToLift(args.boostsToLift)
+	, monoforumAdmin(args.monoforumAdmin)
 	, premiumToLift(args.premiumToLift)
 	, frozen(args.frozen) {
 	}
 
 	QString text;
 	int boostsToLift = 0;
+	bool monoforumAdmin = false;
 	bool premiumToLift = false;
 	bool frozen = false;
 
@@ -210,7 +213,7 @@ struct SendError {
 	}
 
 	explicit operator bool() const {
-		return !text.isEmpty();
+		return monoforumAdmin || !text.isEmpty();
 	}
 	[[nodiscard]] bool has_value() const {
 		return !text.isEmpty();

Telegram/SourceFiles/data/data_histories.cpp

@@ -65,8 +65,7 @@ MTPInputReplyTo ReplyToForMTP(
 			: replyTo.monoforumPeerId
 			? history->owner().peer(replyTo.monoforumPeerId).get()
 			: history->session().user().get();
-		const auto replyToMonoforumPeer = (history->peer->isChannel()
-			&& history->peer->asChannel()->requiresMonoforumPeer())
+		const auto replyToMonoforumPeer = history->peer->amMonoforumAdmin()
 			? possibleMonoforumPeer
 			: nullptr;
 		const auto external = replyTo.messageId
@@ -98,8 +97,7 @@ MTPInputReplyTo ReplyToForMTP(
 			(replyToMonoforumPeer
 				? replyToMonoforumPeer->input
 				: MTPInputPeer()));
-	} else if (history->peer->isChannel()
-		&& history->peer->asChannel()->requiresMonoforumPeer()
+	} else if (history->peer->amMonoforumAdmin()
 		&& replyTo.monoforumPeerId) {
 		const auto replyToMonoforumPeer = replyTo.monoforumPeerId
 			? history->owner().peer(replyTo.monoforumPeerId)

Telegram/SourceFiles/data/data_peer.cpp

@@ -427,10 +427,12 @@ QImage *PeerData::userpicCloudImage(Ui::PeerUserpicView &view) const {
 void PeerData::paintUserpic(
 		Painter &p,
 		Ui::PeerUserpicView &view,
-		int x,
-		int y,
-		int size,
-		bool forceCircle) const {
+		const PaintUserpicContext &context) const {
+	if (const auto broadcast = monoforumBroadcast()) {
+		broadcast->paintUserpic(p, view, context);
+		return;
+	}
+	const auto size = context.size;
 	const auto cloud = userpicCloudImage(view);
 	const auto ratio = style::DevicePixelRatio();
 	Ui::ValidateUserpicCache(
@@ -438,8 +440,8 @@ void PeerData::paintUserpic(
 		cloud,
 		cloud ? nullptr : ensureEmptyUserpic().get(),
 		size * ratio,
-		!forceCircle && (isForum() || isMonoforum()));
-	p.drawImage(QRect(x, y, size, size), view.cached);
+		context.forumLayout);
+	p.drawImage(QRect(context.position, QSize(size, size)), view.cached);
 }
 
 void PeerData::loadUserpic() {
@@ -1118,6 +1120,16 @@ const ChannelData *PeerData::asChannelOrMigrated() const {
 	return migrateTo();
 }
 
+ChannelData *PeerData::asMonoforum() {
+	const auto channel = asMegagroup();
+	return (channel && channel->isMonoforum()) ? channel : nullptr;
+}
+
+const ChannelData *PeerData::asMonoforum() const {
+	const auto channel = asMegagroup();
+	return (channel && channel->isMonoforum()) ? channel : nullptr;
+}
+
 ChatData *PeerData::migrateFrom() const {
 	if (const auto megagroup = asMegagroup()) {
 		return megagroup->amIn()
@@ -1150,6 +1162,16 @@ not_null<const PeerData*> PeerData::migrateToOrMe() const {
 	return this;
 }
 
+ChannelData *PeerData::monoforumBroadcast() const {
+	const auto monoforum = asMonoforum();
+	return monoforum ? monoforum->monoforumLink() : nullptr;
+}
+
+ChannelData *PeerData::broadcastMonoforum() const {
+	const auto broadcast = asBroadcast();
+	return broadcast ? broadcast->monoforumLink() : nullptr;
+}
+
 const QString &PeerData::topBarNameText() const {
 	if (const auto to = migrateTo()) {
 		return to->topBarNameText();
@@ -1572,12 +1594,21 @@ bool PeerData::canManageGroupCall() const {
 		return chat->amCreator()
 			|| (chat->adminRights() & ChatAdminRight::ManageCall);
 	} else if (const auto group = asChannel()) {
+		if (group->isMonoforum()) {
+			return false;
+		}
 		return group->amCreator()
 			|| (group->adminRights() & ChatAdminRight::ManageCall);
 	}
 	return false;
 }
 
+bool PeerData::amMonoforumAdmin() const {
+	const auto broadcast = monoforumBroadcast();
+	return broadcast
+		&& (broadcast->amCreator() || broadcast->hasAdminRights());
+}
+
 int PeerData::starsPerMessage() const {
 	if (const auto user = asUser()) {
 		return user->starsPerMessage();

Telegram/SourceFiles/data/data_peer.h

@@ -277,6 +277,7 @@ public:
 	[[nodiscard]] rpl::producer<bool> slowmodeAppliedValue() const;
 	[[nodiscard]] int slowmodeSecondsLeft() const;
 	[[nodiscard]] bool canManageGroupCall() const;
+	[[nodiscard]] bool amMonoforumAdmin() const;
 
 	[[nodiscard]] int starsPerMessage() const;
 	[[nodiscard]] int starsPerMessageChecked() const;
@@ -297,12 +298,20 @@ public:
 	[[nodiscard]] const ChatData *asChatNotMigrated() const;
 	[[nodiscard]] ChannelData *asChannelOrMigrated();
 	[[nodiscard]] const ChannelData *asChannelOrMigrated() const;
+	[[nodiscard]] ChannelData *asMonoforum();
+	[[nodiscard]] const ChannelData *asMonoforum() const;
 
 	[[nodiscard]] ChatData *migrateFrom() const;
 	[[nodiscard]] ChannelData *migrateTo() const;
 	[[nodiscard]] not_null<PeerData*> migrateToOrMe();
 	[[nodiscard]] not_null<const PeerData*> migrateToOrMe() const;
 
+	// isMonoforum() ? monoforumLink() : nullptr
+	[[nodiscard]] ChannelData *monoforumBroadcast() const;
+
+	// isMonoforum() ? nullptr : monoforumLink()
+	[[nodiscard]] ChannelData *broadcastMonoforum() const;
+
 	void updateFull();
 	void updateFullForced();
 	void fullUpdated();
@@ -332,13 +341,29 @@ public:
 		const ImageLocation &location,
 		bool hasVideo);
 	void setUserpicPhoto(const MTPPhoto &data);
+
+	struct PaintUserpicContext {
+		QPoint position;
+		int size = 0;
+		bool forumLayout = false;
+	};
+	void paintUserpic(
+		Painter &p,
+		Ui::PeerUserpicView &view,
+		const PaintUserpicContext &context) const;
 	void paintUserpic(
 			Painter &p,
 			Ui::PeerUserpicView &view,
 			int x,
 			int y,
 			int size,
-		bool forceCircle = false) const;
+			bool forceCircle = false) const {
+		paintUserpic(p, view, {
+			.position = { x, y },
+			.size = size,
+			.forumLayout = !forceCircle && (isForum() || isMonoforum()),
+		});
+	}
 	void paintUserpicLeft(
 			Painter &p,
 			Ui::PeerUserpicView &view,

Telegram/SourceFiles/data/data_session.cpp

@@ -4657,6 +4657,10 @@ void Session::refreshChatListEntry(Dialogs::Key key) {
 		if (const auto forum = history->peer->forum()) {
 			forum->preloadTopics();
 		}
+		if (history->peer->isMonoforum()
+			&& !history->peer->monoforumBroadcast()) {
+			history->peer->updateFull();
+		}
 	}
 }
 

Telegram/SourceFiles/dialogs/dialogs_widget.cpp

@@ -941,7 +941,7 @@ void Widget::chosenRow(const ChosenRow &row) {
 		}
 		return;
 	} else if (history
-		&& history->isMonoforum()
+		&& history->peer->amMonoforumAdmin()
 		&& !row.message.fullId
 		&& !controller()->adaptive().isOneColumn()) {
 		const auto monoforum = history->peer->monoforum();

Telegram/SourceFiles/history/history.cpp

@@ -2789,7 +2789,10 @@ bool History::shouldBeInChatList() const {
 	} else if (isPinnedDialog(FilterId())) {
 		return true;
 	} else if (const auto channel = peer->asChannel()) {
-		if (!channel->amIn()) {
+		if (channel->isMonoforum()) {
+			return !lastMessageKnown()
+				|| (lastMessage() != nullptr);
+		} else if (!channel->amIn()) {
 			return isTopPromoted();
 		}
 	} else if (const auto chat = peer->asChat()) {

Telegram/SourceFiles/history/history_item.cpp

@@ -3770,8 +3770,7 @@ void HistoryItem::createComponents(CreateConfig &&config) {
 	} else if (config.inlineMarkup) {
 		mask |= HistoryMessageReplyMarkup::Bit();
 	}
-	const auto requiresMonoforumPeer = _history->peer->isChannel()
-		&& _history->peer->asChannel()->requiresMonoforumPeer();
+	const auto requiresMonoforumPeer = _history->peer->amMonoforumAdmin();
 	if (_history->peer->isSelf()
 		|| config.savedSublistPeer
 		|| requiresMonoforumPeer) {

Telegram/SourceFiles/history/history_item_components.h

@@ -57,7 +57,7 @@ struct BotKeyboardButton;
 extern const char kOptionFastButtonsMode[];
 [[nodiscard]] bool FastButtonsMode();
 
-struct HistoryMessageVia : public RuntimeComponent<HistoryMessageVia, HistoryItem> {
+struct HistoryMessageVia : RuntimeComponent<HistoryMessageVia, HistoryItem> {
 	void create(not_null<Data::Session*> owner, UserId userId);
 	void resize(int32 availw) const;
 
@@ -68,7 +68,8 @@ struct HistoryMessageVia : public RuntimeComponent<HistoryMessageVia, HistoryIte
 	ClickHandlerPtr link;
 };
 
-struct HistoryMessageViews : public RuntimeComponent<HistoryMessageViews, HistoryItem> {
+struct HistoryMessageViews
+: RuntimeComponent<HistoryMessageViews, HistoryItem> {
 	static constexpr auto kMaxRecentRepliers = 3;
 
 	struct Part {
@@ -87,13 +88,15 @@ struct HistoryMessageViews : public RuntimeComponent<HistoryMessageViews, Histor
 	int forwardsCount = 0;
 };
 
-struct HistoryMessageSigned : public RuntimeComponent<HistoryMessageSigned, HistoryItem> {
+struct HistoryMessageSigned
+: RuntimeComponent<HistoryMessageSigned, HistoryItem> {
 	QString author;
 	UserData *viaBusinessBot = nullptr;
 	bool isAnonymousRank = false;
 };
 
-struct HistoryMessageEdited : public RuntimeComponent<HistoryMessageEdited, HistoryItem> {
+struct HistoryMessageEdited
+: RuntimeComponent<HistoryMessageEdited, HistoryItem> {
 	TimeId date = 0;
 };
 
@@ -134,7 +137,8 @@ private:
 
 };
 
-struct HistoryMessageForwarded : public RuntimeComponent<HistoryMessageForwarded, HistoryItem> {
+struct HistoryMessageForwarded
+: RuntimeComponent<HistoryMessageForwarded, HistoryItem> {
 	void create(
 		const HistoryMessageVia *via,
 		not_null<const HistoryItem*> item) const;
@@ -162,12 +166,14 @@ struct HistoryMessageForwarded : public RuntimeComponent<HistoryMessageForwarded
 	bool story = false;
 };
 
-struct HistoryMessageSavedMediaData : public RuntimeComponent<HistoryMessageSavedMediaData, HistoryItem> {
+struct HistoryMessageSavedMediaData
+: RuntimeComponent<HistoryMessageSavedMediaData, HistoryItem> {
 	TextWithEntities text;
 	std::unique_ptr<Data::Media> media;
 };
 
-struct HistoryMessageSaved : public RuntimeComponent<HistoryMessageSaved, HistoryItem> {
+struct HistoryMessageSaved
+: RuntimeComponent<HistoryMessageSaved, HistoryItem> {
 	Data::SavedSublist *sublist = nullptr;
 };
 
@@ -274,7 +280,7 @@ struct ReplyFields {
 	const MTPInputReplyTo &reply);
 
 struct HistoryMessageReply
-	: public RuntimeComponent<HistoryMessageReply, HistoryItem> {
+: RuntimeComponent<HistoryMessageReply, HistoryItem> {
 	HistoryMessageReply();
 	HistoryMessageReply(const HistoryMessageReply &other) = delete;
 	HistoryMessageReply(HistoryMessageReply &&other) = delete;
@@ -358,7 +364,7 @@ private:
 };
 
 struct HistoryMessageTranslation
-	: public RuntimeComponent<HistoryMessageTranslation, HistoryItem> {
+: RuntimeComponent<HistoryMessageTranslation, HistoryItem> {
 	TextWithEntities text;
 	LanguageId to;
 	bool requested = false;
@@ -367,7 +373,7 @@ struct HistoryMessageTranslation
 };
 
 struct HistoryMessageReplyMarkup
-	: public RuntimeComponent<HistoryMessageReplyMarkup, HistoryItem> {
+: RuntimeComponent<HistoryMessageReplyMarkup, HistoryItem> {
 	using Button = HistoryMessageMarkupButton;
 
 	void createForwarded(const HistoryMessageReplyMarkup &original);
@@ -565,7 +571,7 @@ private:
 
 // Special type of Component for the channel actions log.
 struct HistoryMessageLogEntryOriginal
-: public RuntimeComponent<HistoryMessageLogEntryOriginal, HistoryItem> {
+: RuntimeComponent<HistoryMessageLogEntryOriginal, HistoryItem> {
 	HistoryMessageLogEntryOriginal();
 	HistoryMessageLogEntryOriginal(HistoryMessageLogEntryOriginal &&other);
 	HistoryMessageLogEntryOriginal &operator=(HistoryMessageLogEntryOriginal &&other);
@@ -597,19 +603,19 @@ struct MessageFactcheck {
 	const tl::conditional<MTPFactCheck> &factcheck);
 
 struct HistoryMessageFactcheck
-: public RuntimeComponent<HistoryMessageFactcheck, HistoryItem> {
+: RuntimeComponent<HistoryMessageFactcheck, HistoryItem> {
 	MessageFactcheck data;
 	WebPageData *page = nullptr;
 	bool requested = false;
 };
 
 struct HistoryMessageRestrictions
-: public RuntimeComponent<HistoryMessageRestrictions, HistoryItem> {
+: RuntimeComponent<HistoryMessageRestrictions, HistoryItem> {
 	std::vector<Data::UnavailableReason> reasons;
 };
 
 struct HistoryServiceData
-: public RuntimeComponent<HistoryServiceData, HistoryItem> {
+: RuntimeComponent<HistoryServiceData, HistoryItem> {
 	std::vector<ClickHandlerPtr> textLinks;
 };
 
@@ -625,13 +631,13 @@ struct HistoryServiceDependentData {
 };
 
 struct HistoryServicePinned
-: public RuntimeComponent<HistoryServicePinned, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServicePinned, HistoryItem>
+, HistoryServiceDependentData {
 };
 
 struct HistoryServiceTopicInfo
-: public RuntimeComponent<HistoryServiceTopicInfo, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServiceTopicInfo, HistoryItem>
+, HistoryServiceDependentData {
 	QString title;
 	DocumentId iconId = 0;
 	bool closed = false;
@@ -652,14 +658,14 @@ struct HistoryServiceTopicInfo
 };
 
 struct HistoryServiceGameScore
-: public RuntimeComponent<HistoryServiceGameScore, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServiceGameScore, HistoryItem>
+, HistoryServiceDependentData {
 	int score = 0;
 };
 
 struct HistoryServicePayment
-: public RuntimeComponent<HistoryServicePayment, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServicePayment, HistoryItem>
+, HistoryServiceDependentData {
 	QString slug;
 	TextWithEntities amount;
 	ClickHandlerPtr invoiceLink;
@@ -669,22 +675,22 @@ struct HistoryServicePayment
 };
 
 struct HistoryServiceSameBackground
-: public RuntimeComponent<HistoryServiceSameBackground, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServiceSameBackground, HistoryItem>
+, HistoryServiceDependentData {
 };
 
 struct HistoryServiceGiveawayResults
-: public RuntimeComponent<HistoryServiceGiveawayResults, HistoryItem>
-, public HistoryServiceDependentData {
+: RuntimeComponent<HistoryServiceGiveawayResults, HistoryItem>
+, HistoryServiceDependentData {
 };
 
 struct HistoryServiceCustomLink
-: public RuntimeComponent<HistoryServiceCustomLink, HistoryItem> {
+: RuntimeComponent<HistoryServiceCustomLink, HistoryItem> {
 	ClickHandlerPtr link;
 };
 
 struct HistoryServicePaymentRefund
-: public RuntimeComponent<HistoryServicePaymentRefund, HistoryItem> {
+: RuntimeComponent<HistoryServicePaymentRefund, HistoryItem> {
 	ClickHandlerPtr link;
 	PeerData *peer = nullptr;
 	QString transactionId;
@@ -707,7 +713,7 @@ struct TimeToLiveSingleView {
 };
 
 struct HistoryServiceSelfDestruct
-: public RuntimeComponent<HistoryServiceSelfDestruct, HistoryItem> {
+: RuntimeComponent<HistoryServiceSelfDestruct, HistoryItem> {
 	using Type = HistorySelfDestructType;
 
 	Type type = Type::Photo;
@@ -716,24 +722,25 @@ struct HistoryServiceSelfDestruct
 };
 
 struct HistoryServiceOngoingCall
-: public RuntimeComponent<HistoryServiceOngoingCall, HistoryItem> {
+: RuntimeComponent<HistoryServiceOngoingCall, HistoryItem> {
 	CallId id = 0;
 	ClickHandlerPtr link;
 	rpl::lifetime lifetime;
 };
 
 struct HistoryServiceChatThemeChange
-: public RuntimeComponent<HistoryServiceChatThemeChange, HistoryItem> {
+: RuntimeComponent<HistoryServiceChatThemeChange, HistoryItem> {
 	ClickHandlerPtr link;
 };
 
 struct HistoryServiceTTLChange
-: public RuntimeComponent<HistoryServiceTTLChange, HistoryItem> {
+: RuntimeComponent<HistoryServiceTTLChange, HistoryItem> {
 	ClickHandlerPtr link;
 };
 
 class FileClickHandler;
-struct HistoryDocumentThumbed : public RuntimeComponent<HistoryDocumentThumbed, HistoryView::Document> {
+struct HistoryDocumentThumbed
+: RuntimeComponent<HistoryDocumentThumbed, HistoryView::Document> {
 	std::shared_ptr<FileClickHandler> linksavel;
 	std::shared_ptr<FileClickHandler> linkopenwithl;
 	std::shared_ptr<FileClickHandler> linkcancell;
@@ -745,13 +752,15 @@ struct HistoryDocumentThumbed : public RuntimeComponent<HistoryDocumentThumbed,
 	mutable bool blurred : 1 = false;
 };
 
-struct HistoryDocumentCaptioned : public RuntimeComponent<HistoryDocumentCaptioned, HistoryView::Document> {
+struct HistoryDocumentCaptioned
+: RuntimeComponent<HistoryDocumentCaptioned, HistoryView::Document> {
 	HistoryDocumentCaptioned();
 
 	Ui::Text::String caption;
 };
 
-struct HistoryDocumentNamed : public RuntimeComponent<HistoryDocumentNamed, HistoryView::Document> {
+struct HistoryDocumentNamed
+: RuntimeComponent<HistoryDocumentNamed, HistoryView::Document> {
 	Ui::Text::String name;
 };
 
@@ -763,7 +772,8 @@ struct HistoryDocumentVoicePlayback {
 	Ui::Animations::Basic progressAnimation;
 };
 
-class HistoryDocumentVoice : public RuntimeComponent<HistoryDocumentVoice, HistoryView::Document> {
+class HistoryDocumentVoice
+: public RuntimeComponent<HistoryDocumentVoice, HistoryView::Document> {
 	// We don't use float64 because components should align to pointer even on 32bit systems.
 	static constexpr float64 kFloatToIntMultiplier = 65536.;
 

Telegram/SourceFiles/history/history_widget.cpp

@@ -6633,6 +6633,12 @@ int HistoryWidget::countAutomaticScrollTop() {
 }
 
 Data::SendError HistoryWidget::computeSendRestriction() const {
+	if (!_canSendMessages && _peer->amMonoforumAdmin()) {
+		return Data::SendError({
+			.text = tr::lng_monoforum_choose_to_reply(tr::now),
+			.monoforumAdmin = true,
+		});
+	}
 	const auto allWithoutPolls = Data::AllSendRestrictions()
 		& ~ChatRestriction::SendPolls;
 	return (_peer && !Data::CanSendAnyOf(_peer, allWithoutPolls))
@@ -8753,10 +8759,17 @@ bool HistoryWidget::updateCanSendMessage() {
 	const auto topic = resolveReplyToTopic();
 	const auto allWithoutPolls = Data::AllSendRestrictions()
 		& ~ChatRestriction::SendPolls;
-	const auto newCanSendMessages = topic
+	const auto onlyReplies = _peer->amMonoforumAdmin();
+	const auto restrictedOnlyReplies = onlyReplies
+		&& (!_replyTo.messageId || _replyTo.messageId.peer != _peer->id);
+	const auto newCanSendMessages = restrictedOnlyReplies
+		? false
+		: topic
 		? Data::CanSendAnyOf(topic, allWithoutPolls)
 		: Data::CanSendAnyOf(_peer, allWithoutPolls);
-	const auto newCanSendTexts = topic
+	const auto newCanSendTexts = restrictedOnlyReplies
+		? false
+		: topic
 		? Data::CanSend(topic, ChatRestriction::SendOther)
 		: Data::CanSend(_peer, ChatRestriction::SendOther);
 	if (_canSendMessages == newCanSendMessages

Telegram/SourceFiles/history/view/history_view_chat_section.cpp

@@ -2702,7 +2702,11 @@ QRect ChatWidget::floatPlayerAvailableRect() {
 }
 
 Context ChatWidget::listContext() {
-	return _sublist ? Context::SavedSublist : Context::Replies;
+	return !_sublist
+		? Context::Replies
+		: _sublist->parentChat()
+		? Context::Monoforum
+		: Context::SavedSublist;
 }
 
 bool ChatWidget::listScrollTo(int top, bool syntetic) {
@@ -2883,9 +2887,7 @@ void ChatWidget::listMarkReadTill(not_null<HistoryItem*> item) {
 
 void ChatWidget::listMarkContentsRead(
 		const base::flat_set<not_null<HistoryItem*>> &items) {
-	if (!_sublist) {
 	session().api().markContentsRead(items);
-	}
 }
 
 MessagesBarData ChatWidget::listMessagesBar(

Telegram/SourceFiles/history/view/history_view_element.cpp

@@ -41,6 +41,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/painter.h"
 #include "ui/rect.h"
 #include "data/components/sponsored_messages.h"
+#include "data/data_channel.h"
+#include "data/data_saved_sublist.h"
 #include "data/data_session.h"
 #include "data/data_forum.h"
 #include "data/data_forum_topic.h"
@@ -475,6 +477,83 @@ void DateBadge::paint(
 	ServiceMessagePainter::PaintDate(p, st, text, width, y, w, chatWide);
 }
 
+void MonoforumSenderBar::init(
+		not_null<PeerData*> parentChat,
+		not_null<PeerData*> peer) {
+	author = peer;
+	text.setText(st::semiboldTextStyle, peer->name());
+	const auto skip = st::monoforumBarUserpicSkip;
+	const auto userpic = st::msgServicePadding.top()
+		+ st::msgServiceFont->height
+		+ st::msgServicePadding.bottom()
+		- 2 * skip;
+	width = skip + userpic + skip * 2 + text.maxWidth() + st::msgServicePadding.right();
+}
+
+int MonoforumSenderBar::height() const {
+	return st::msgServiceMargin.top()
+		+ st::msgServicePadding.top()
+		+ st::msgServiceFont->height
+		+ st::msgServicePadding.bottom()
+		+ st::msgServiceMargin.bottom();
+}
+
+void MonoforumSenderBar::paint(
+		Painter &p,
+		not_null<const Ui::ChatStyle*> st,
+		int y,
+		int w,
+		bool chatWide) const {
+	Expects(author != nullptr);
+
+	int left = st::msgServiceMargin.left();
+	const auto maxwidth = chatWide
+		? std::min(w, WideChatWidth())
+		: w;
+	w = maxwidth - st::msgServiceMargin.left() - st::msgServiceMargin.left();
+
+	const auto use = std::min(w, width);
+
+	left += (w - use) / 2;
+	int h = st::msgServicePadding.top() + st::msgServiceFont->height + st::msgServicePadding.bottom();
+	ServiceMessagePainter::PaintBubble(
+		p,
+		st->msgServiceBg(),
+		st->serviceBgCornersNormal(),
+		QRect(left, y + st::msgServiceMargin.top(), use, h));
+
+	const auto skip = st::monoforumBarUserpicSkip;
+	{
+		auto pen = st->msgServiceBg()->p;
+		pen.setWidthF(skip);
+		pen.setCapStyle(Qt::RoundCap);
+		pen.setDashPattern({ 2., 2. });
+		p.setPen(pen);
+		const auto top = y + st::msgServiceMargin.top() + (h / 2);
+		p.drawLine(0, top, left, top);
+		p.drawLine(left + use, top, 2 * w, top);
+	}
+
+	const auto userpic = st::msgServicePadding.top()
+		+ st::msgServiceFont->height
+		+ st::msgServicePadding.bottom()
+		- 2 * skip;
+	const auto available = use - (skip + userpic + skip * 2 + st::msgServicePadding.right());
+
+	author->paintUserpic(p, view, left + skip, y + st::msgServiceMargin.top() + skip, userpic);
+
+	p.setFont(st::msgServiceFont);
+	p.setPen(st->msgServiceFg());
+	text.draw(p, {
+		.position = {
+			left + skip + userpic + skip * 2,
+			y + st::msgServiceMargin.top() + st::msgServicePadding.top(),
+		},
+		.availableWidth = available,
+		.elisionLines = 1,
+	});
+}
+
 void ServicePreMessage::init(PreparedServiceText string) {
 	text = Ui::Text::String(
 		st::serviceTextStyle,
@@ -1220,6 +1299,7 @@ void Element::validateTextSkipBlock(bool has, int width, int height) {
 }
 
 void Element::previousInBlocksChanged() {
+	recountMonoforumSenderBarInBlocks();
 	recountDisplayDateInBlocks();
 	recountAttachToPreviousInBlocks();
 }
@@ -1255,7 +1335,8 @@ bool Element::computeIsAttachToPrevious(not_null<Element*> previous) {
 	const auto item = data();
 	if (!Has<DateBadge>()
 		&& !Has<UnreadBar>()
-		&& !Has<ServicePreMessage>()) {
+		&& !Has<ServicePreMessage>()
+		&& !Has<MonoforumSenderBar>()) {
 		const auto prev = previous->data();
 		const auto previousMarkup = prev->inlineReplyMarkup();
 		const auto possible = (std::abs(prev->date() - item->date())
@@ -1385,6 +1466,37 @@ void Element::recountAttachToPreviousInBlocks() {
 	setAttachToPrevious(attachToPrevious, previous);
 }
 
+void Element::recountMonoforumSenderBarInBlocks() {
+	const auto item = data();
+	const auto sublist = item->savedSublist();
+	const auto parentChat = sublist ? sublist->parentChat() : nullptr;
+	const auto barPeer = [&]() -> PeerData* {
+		if (!parentChat
+			|| isHidden()
+			|| item->isEmpty()
+			|| item->isSponsored()) {
+			return nullptr;
+		}
+		const auto peer = sublist->peer();
+		if (const auto previous = previousDisplayedInBlocks()) {
+			const auto prev = previous->data();
+			if (const auto prevSublist = prev->savedSublist()) {
+				Assert(prevSublist->parentChat() == parentChat);
+				if (prevSublist->peer() == peer) {
+					return nullptr;
+				}
+			}
+		}
+		return peer;
+	}();
+	if (barPeer && !Has<MonoforumSenderBar>()) {
+		AddComponents(MonoforumSenderBar::Bit());
+		Get<MonoforumSenderBar>()->init(parentChat, barPeer);
+	} else if (!barPeer && Has<MonoforumSenderBar>()) {
+		RemoveComponents(MonoforumSenderBar::Bit());
+	}
+}
+
 void Element::recountDisplayDateInBlocks() {
 	setDisplayDate([&] {
 		const auto item = data();

Telegram/SourceFiles/history/view/history_view_element.h

@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/runtime_composer.h"
 #include "base/flags.h"
 #include "base/weak_ptr.h"
+#include "ui/userpic_view.h"
 
 class History;
 class HistoryBlock;
@@ -58,6 +59,7 @@ enum class Context : char {
 	Pinned,
 	AdminLog,
 	ContactPreview,
+	Monoforum,
 	SavedSublist,
 	TTLViewer,
 	ShortcutMessages,
@@ -220,7 +222,7 @@ QString DateTooltipText(not_null<Element*> view);
 
 // Any HistoryView::Element can have this Component for
 // displaying the unread messages bar above the message.
-struct UnreadBar : public RuntimeComponent<UnreadBar, Element> {
+struct UnreadBar : RuntimeComponent<UnreadBar, Element> {
 	void init(const QString &string);
 
 	static int height();
@@ -241,7 +243,7 @@ struct UnreadBar : public RuntimeComponent<UnreadBar, Element> {
 
 // Any HistoryView::Element can have this Component for
 // displaying the day mark above the message.
-struct DateBadge : public RuntimeComponent<DateBadge, Element> {
+struct DateBadge : RuntimeComponent<DateBadge, Element> {
 	void init(const QString &date);
 
 	int height() const;
@@ -257,10 +259,27 @@ struct DateBadge : public RuntimeComponent<DateBadge, Element> {
 
 };
 
+struct MonoforumSenderBar : RuntimeComponent<MonoforumSenderBar, Element> {
+	void init(not_null<PeerData*> parentChat, not_null<PeerData*> peer);
+
+	int height() const;
+	void paint(
+		Painter &p,
+		not_null<const Ui::ChatStyle*> st,
+		int y,
+		int w,
+		bool chatWide) const;
+
+	PeerData *author = nullptr;
+	Ui::Text::String text;
+	ClickHandlerPtr link;
+	mutable Ui::PeerUserpicView view;
+	int width = 0;
+};
+
 // Any HistoryView::Element can have this Component for
 // displaying some text in layout of a service message above the message.
-struct ServicePreMessage
-	: public RuntimeComponent<ServicePreMessage, Element> {
+struct ServicePreMessage : RuntimeComponent<ServicePreMessage, Element> {
 	void init(PreparedServiceText string);
 
 	int resizeToWidth(int newWidth, bool chatWide);
@@ -281,7 +300,7 @@ struct ServicePreMessage
 
 };
 
-struct FakeBotAboutTop : public RuntimeComponent<FakeBotAboutTop, Element> {
+struct FakeBotAboutTop : RuntimeComponent<FakeBotAboutTop, Element> {
 	void init();
 
 	Ui::Text::String text;
@@ -289,7 +308,7 @@ struct FakeBotAboutTop : public RuntimeComponent<FakeBotAboutTop, Element> {
 	int height = 0;
 };
 
-struct PurchasedTag : public RuntimeComponent<PurchasedTag, Element> {
+struct PurchasedTag : RuntimeComponent<PurchasedTag, Element> {
 	Ui::Text::String text;
 };
 
@@ -629,14 +648,17 @@ protected:
 	std::unique_ptr<Reactions::InlineList> _reactions;
 
 private:
+	void recountMonoforumSenderBarInBlocks();
+
 	// This should be called only from previousInBlocksChanged()
 	// to add required bits to the Composer mask
 	// after that always use Has<DateBadge>().
 	void recountDisplayDateInBlocks();
 
 	// This should be called only from previousInBlocksChanged() or when
-	// DateBadge or UnreadBar bit is changed in the Composer mask
-	// then the result should be cached in a client side flag
+	// DateBadge or UnreadBar or MonoforumSenderBar bit
+	// is changed in the Composer mask then the result
+	// should be cached in a client side flag
 	// HistoryView::Element::Flag::AttachedToPrevious.
 	void recountAttachToPreviousInBlocks();
 

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -1088,6 +1088,9 @@ int Message::marginTop() const {
 	if (const auto bar = Get<UnreadBar>()) {
 		result += bar->height();
 	}
+	if (const auto monoforumBar = Get<MonoforumSenderBar>()) {
+		result += monoforumBar->height();
+	}
 	if (const auto service = Get<ServicePreMessage>()) {
 		result += service->height;
 	}
@@ -1146,6 +1149,27 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		}
 	}
 
+	if (const auto monoforumBar = Get<MonoforumSenderBar>()) {
+		auto barh = monoforumBar->height();
+		auto skip = 0;
+		if (const auto date = Get<DateBadge>()) {
+			skip += date->height();
+		}
+		if (const auto bar = Get<UnreadBar>()) {
+			skip += bar->height();
+		}
+		if (context.clip.intersects(QRect(0, skip, width(), barh))) {
+			p.translate(0, skip);
+			monoforumBar->paint(
+				p,
+				context.st,
+				0,
+				width(),
+				delegate()->elementIsChatWide());
+			p.translate(0, -skip);
+		}
+	}
+
 	if (const auto service = Get<ServicePreMessage>()) {
 		service->paint(p, context, g, delegate()->elementIsChatWide());
 	}
@@ -2458,6 +2482,8 @@ bool Message::hasFromPhoto() const {
 	switch (context()) {
 	case Context::AdminLog:
 		return true;
+	case Context::Monoforum:
+		return delegate()->elementIsChatWide();
 	case Context::History:
 	case Context::ChatPreview:
 	case Context::TTLViewer:
@@ -3685,6 +3711,8 @@ bool Message::hasFromName() const {
 	switch (context()) {
 	case Context::AdminLog:
 		return true;
+	case Context::Monoforum:
+		return false;
 	case Context::History:
 	case Context::ChatPreview:
 	case Context::TTLViewer:
@@ -3953,6 +3981,8 @@ bool Message::displayFastShare() const {
 bool Message::displayGoToOriginal() const {
 	if (isPinnedContext()) {
 		return !hasOutLayout();
+	} else if (context() == Context::Monoforum) {
+		return false;
 	}
 	const auto item = data();
 	if (const auto forwarded = item->Get<HistoryMessageForwarded>()) {

Telegram/SourceFiles/history/view/history_view_message.h

@@ -35,8 +35,7 @@ class InlineList;
 } // namespace Reactions
 
 // Special type of Component for the channel actions log.
-struct LogEntryOriginal
-	: public RuntimeComponent<LogEntryOriginal, Element> {
+struct LogEntryOriginal : RuntimeComponent<LogEntryOriginal, Element> {
 	LogEntryOriginal();
 	LogEntryOriginal(LogEntryOriginal &&other);
 	LogEntryOriginal &operator=(LogEntryOriginal &&other);
@@ -45,13 +44,12 @@ struct LogEntryOriginal
 	std::unique_ptr<WebPage> page;
 };
 
-struct Factcheck
-: public RuntimeComponent<Factcheck, Element> {
+struct Factcheck : RuntimeComponent<Factcheck, Element> {
 	std::unique_ptr<WebPage> page;
 	bool expanded = false;
 };
 
-struct PsaTooltipState : public RuntimeComponent<PsaTooltipState, Element> {
+struct PsaTooltipState : RuntimeComponent<PsaTooltipState, Element> {
 	QString type;
 	mutable ClickHandlerPtr link;
 	mutable Ui::Animations::Simple buttonVisibleAnimation;

Telegram/SourceFiles/history/view/history_view_service_message.cpp

@@ -452,6 +452,9 @@ QSize Service::performCountCurrentSize(int newWidth) {
 	if (const auto bar = Get<UnreadBar>()) {
 		newHeight += bar->height();
 	}
+	if (const auto monoforumBar = Get<MonoforumSenderBar>()) {
+		newHeight += monoforumBar->height();
+	}
 
 	data()->resolveDependent();
 
@@ -525,6 +528,9 @@ int Service::marginTop() const {
 	if (const auto bar = Get<UnreadBar>()) {
 		result += bar->height();
 	}
+	if (const auto monoforumBar = Get<MonoforumSenderBar>()) {
+		result += monoforumBar->height();
+	}
 	return result;
 }
 
@@ -557,6 +563,27 @@ void Service::draw(Painter &p, const PaintContext &context) const {
 		}
 	}
 
+	if (const auto monoforumBar = Get<MonoforumSenderBar>()) {
+		auto barh = monoforumBar->height();
+		auto skip = 0;
+		if (const auto date = Get<DateBadge>()) {
+			skip += date->height();
+		}
+		if (const auto bar = Get<UnreadBar>()) {
+			skip += bar->height();
+		}
+		if (context.clip.intersects(QRect(0, skip, width(), barh))) {
+			p.translate(0, skip);
+			monoforumBar->paint(
+				p,
+				context.st,
+				0,
+				width(),
+				delegate()->elementIsChatWide());
+			p.translate(0, -skip);
+		}
+	}
+
 	if (isHidden()) {
 		return;
 	}

Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp

@@ -492,6 +492,9 @@ void TopBarWidget::paintTopBar(Painter &p) {
 		? history->peer.get()
 		: sublist ? sublist->peer().get()
 		: nullptr;
+	const auto broadcastForMonoforum = history
+		? history->peer->monoforumBroadcast()
+		: nullptr;
 	if (topic && _activeChat.section == Section::Replies) {
 		p.setPen(st::dialogsNameFg);
 		topic->chatListNameText().drawElided(
@@ -515,9 +518,12 @@ void TopBarWidget::paintTopBar(Painter &p) {
 		}
 	} else if (folder
 		|| (peer && (peer->sharedMediaInfo() || peer->isVerifyCodes()))
+		|| broadcastForMonoforum
 		|| (_activeChat.section == Section::Scheduled)
 		|| (_activeChat.section == Section::Pinned)) {
-		auto text = (_activeChat.section == Section::Scheduled)
+		auto text = broadcastForMonoforum
+			? broadcastForMonoforum->name() + u" Messages"_q AssertIsDebug()
+			: (_activeChat.section == Section::Scheduled)
 			? ((peer && peer->isSelf())
 				? tr::lng_reminder_messages(tr::now)
 				: tr::lng_scheduled_messages(tr::now))

Telegram/SourceFiles/info/profile/info_profile_cover.cpp

@@ -628,10 +628,13 @@ Cover::Cover(
 	: object_ptr<Ui::UserpicButton>(
 		this,
 		controller,
-		_peer,
+		(_peer->monoforumBroadcast()
+			? _peer->monoforumBroadcast()
+			: _peer),
 		Ui::UserpicButton::Role::OpenPhoto,
 		Ui::UserpicButton::Source::PeerPhoto,
-		_st.photo))
+		_st.photo,
+		_peer->monoforumBroadcast() != nullptr))
 , _changePersonal((role == Role::Info
 	|| topic
 	|| !_peer->isUser()
@@ -647,6 +650,9 @@ Cover::Cover(
 , _showLastSeen(this, tr::lng_status_lastseen_when(), _st.showLastSeen)
 , _refreshStatusTimer([this] { refreshStatusText(); }) {
 	_peer->updateFull();
+	if (const auto broadcast = _peer->monoforumBroadcast()) {
+		broadcast->updateFull();
+	}
 
 	_name->setSelectable(true);
 	_name->setContextCopyText(tr::lng_profile_copy_fullname(tr::now));
@@ -979,6 +985,12 @@ void Cover::refreshStatusText() {
 				chat->count,
 				int(chat->participants.size()));
 			return { .text = ChatStatusText(fullCount, onlineCount, true) };
+		} else if (auto broadcast = _peer->monoforumBroadcast()) {
+			auto result = ChatStatusText(
+				qMax(broadcast->membersCount(), 1),
+				0,
+				false);
+			return TextWithEntities{ .text = result };
 		} else if (auto channel = _peer->asChannel()) {
 			const auto onlineCount = _onlineCount.current();
 			const auto fullCount = qMax(channel->membersCount(), 1);

Telegram/SourceFiles/info/profile/info_profile_inner_widget.cpp

@@ -99,8 +99,10 @@ object_ptr<Ui::RpWidget> InnerWidget::setupContent(
 		result->add(std::move(actions));
 	}
 	if (_peer->isChat() || _peer->isMegagroup()) {
+		if (!_peer->isMonoforum()) {
 			setupMembers(result.data());
 		}
+	}
 	return result;
 }
 

Telegram/SourceFiles/overview/overview_layout.h

@@ -181,7 +181,7 @@ private:
 
 };
 
-struct Info : public RuntimeComponent<Info, LayoutItemBase> {
+struct Info : RuntimeComponent<Info, LayoutItemBase> {
 	int top = 0;
 };
 

Telegram/SourceFiles/ui/chat/chat.style

@@ -49,6 +49,7 @@ msgReplyBarSize: size(2px, 36px);
 msgReplyBarSkip: 10px;
 msgServicePadding: margins(12px, 3px, 12px, 4px);
 msgServiceMargin: margins(10px, 10px, 10px, 2px);
+monoforumBarUserpicSkip: 2px;
 
 msgDateSpace: 12px;
 msgDateDelta: point(2px, 5px);

Telegram/SourceFiles/ui/controls/userpic_button.cpp

@@ -180,12 +180,14 @@ UserpicButton::UserpicButton(
 	not_null<PeerData*> peer,
 	Role role,
 	Source source,
-	const style::UserpicButton &st)
+	const style::UserpicButton &st,
+	bool forceForumShape)
 : RippleButton(parent, st.changeButton.ripple)
 , _st(st)
 , _controller(controller)
 , _window(&controller->window())
 , _peer(peer)
+, _forceForumShape(forceForumShape)
 , _role(role)
 , _source(source) {
 	if (_source == Source::Custom) {

Telegram/SourceFiles/ui/controls/userpic_button.h

@@ -69,7 +69,8 @@ public:
 		not_null<PeerData*> peer,
 		Role role,
 		Source source,
-		const style::UserpicButton &st);
+		const style::UserpicButton &st,
+		bool forceForumShape = false);
 	UserpicButton(
 		QWidget *parent,
 		not_null<PeerData*> peer, // Role::Custom, Source::PeerPhoto