Allow pinned messages in channels.

Telegram/SourceFiles/apiwrap.cpp

@@ -395,13 +395,13 @@ void ApiWrap::gotChatFull(PeerData *peer, const MTPmessages_ChatFull &result, mt
 			}
 			accumulate_max(h->outboxReadBefore, f.vread_outbox_max_id.v + 1);
 		}
+		ranges::overload([] {}, [](int a) {});
+		if (f.has_pinned_msg_id()) {
+			channel->setPinnedMessageId(f.vpinned_msg_id.v);
+		} else {
+			channel->clearPinnedMessage();
+		}
 		if (channel->isMegagroup()) {
-			if (f.has_pinned_msg_id()) {
-				channel->mgInfo->pinnedMsgId = f.vpinned_msg_id.v;
-			} else {
-				channel->mgInfo->pinnedMsgId = 0;
-			}
-
 			auto stickersChanged = (canEditStickers != channel->canEditStickers());
 			auto stickerSet = (f.has_stickerset() ? &f.vstickerset.c_stickerSet() : nullptr);
 			auto newSetId = (stickerSet ? stickerSet->vid.v : 0);

Telegram/SourceFiles/boxes/confirm_box.cpp

@@ -368,21 +368,30 @@ void ConvertToSupergroupBox::paintEvent(QPaintEvent *e) {
 PinMessageBox::PinMessageBox(QWidget*, ChannelData *channel, MsgId msgId)
 : _channel(channel)
 , _msgId(msgId)
-, _text(this, lang(lng_pinned_pin_sure), Ui::FlatLabel::InitType::Simple, st::boxLabel)
+, _text(this, lang(lng_pinned_pin_sure), Ui::FlatLabel::InitType::Simple, st::boxLabel) {
-, _notify(this, lang(lng_pinned_notify), true, st::defaultBoxCheckbox) {
 }
 
 void PinMessageBox::prepare() {
 	addButton(langFactory(lng_pinned_pin), [this] { pinMessage(); });
 	addButton(langFactory(lng_cancel), [this] { closeBox(); });
 
-	setDimensions(st::boxWidth, st::boxPadding.top() + _text->height() + st::boxMediumSkip + _notify->heightNoMargins() + st::boxPadding.bottom());
+	if (_channel->isMegagroup()) {
+		_notify.create(this, lang(lng_pinned_notify), true, st::defaultBoxCheckbox);
+	}
+
+	auto height = st::boxPadding.top() + _text->height() + st::boxPadding.bottom();
+	if (_notify) {
+		height += st::boxMediumSkip + _notify->heightNoMargins();
+	}
+	setDimensions(st::boxWidth, height);
 }
 
 void PinMessageBox::resizeEvent(QResizeEvent *e) {
 	BoxContent::resizeEvent(e);
 	_text->moveToLeft(st::boxPadding.left(), st::boxPadding.top());
-	_notify->moveToLeft(st::boxPadding.left(), _text->y() + _text->height() + st::boxMediumSkip);
+	if (_notify) {
+		_notify->moveToLeft(st::boxPadding.left(), _text->y() + _text->height() + st::boxMediumSkip);
+	}
 }
 
 void PinMessageBox::keyPressEvent(QKeyEvent *e) {
@@ -397,10 +406,16 @@ void PinMessageBox::pinMessage() {
 	if (_requestId) return;
 
 	auto flags = MTPchannels_UpdatePinnedMessage::Flags(0);
-	if (!_notify->checked()) {
+	if (_notify && !_notify->checked()) {
 		flags |= MTPchannels_UpdatePinnedMessage::Flag::f_silent;
 	}
-	_requestId = MTP::send(MTPchannels_UpdatePinnedMessage(MTP_flags(flags), _channel->inputChannel, MTP_int(_msgId)), rpcDone(&PinMessageBox::pinDone), rpcFail(&PinMessageBox::pinFail));
+	_requestId = MTP::send(
+		MTPchannels_UpdatePinnedMessage(
+			MTP_flags(flags),
+			_channel->inputChannel,
+			MTP_int(_msgId)),
+		rpcDone(&PinMessageBox::pinDone),
+		rpcFail(&PinMessageBox::pinFail));
 }
 
 void PinMessageBox::pinDone(const MTPUpdates &updates) {

Telegram/SourceFiles/boxes/confirm_box.h

@@ -164,7 +164,7 @@ private:
 	MsgId _msgId;
 
 	object_ptr<Ui::FlatLabel> _text;
-	object_ptr<Ui::Checkbox> _notify;
+	object_ptr<Ui::Checkbox> _notify = { nullptr };
 
 	mtpRequestId _requestId = 0;
 

Telegram/SourceFiles/calls/calls_panel.cpp

@@ -275,13 +275,13 @@ void Panel::replaceCall(not_null<Call*> call) {
 	updateControlsGeometry();
 }
 
-bool Panel::event(QEvent *e) {
+bool Panel::eventHook(QEvent *e) {
 	if (e->type() == QEvent::WindowDeactivate) {
 		if (_call && _call->state() == State::Established) {
 			hideDeactivated();
 		}
 	}
-	return TWidget::event(e);
+	return RpWidget::eventHook(e);
 }
 
 void Panel::hideDeactivated() {
@@ -364,12 +364,10 @@ void Panel::initLayout() {
 
 	initGeometry();
 
-	processUserPhoto();
+	Notify::PeerUpdateValue(_user, Notify::PeerUpdate::Flag::PhotoChanged)
-	subscribe(Auth().api().fullPeerUpdated(), [this](PeerData *peer) {
+		| rpl::start_with_next(
-		if (peer == _user) {
+			[this] { processUserPhoto(); },
-			processUserPhoto();
+			lifetime());
-		}
-	});
 	subscribe(Auth().downloaderTaskFinished(), [this] {
 		refreshUserPhoto();
 	});

Telegram/SourceFiles/calls/calls_panel.h

@@ -24,6 +24,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "base/timer.h"
 #include "calls/calls_call.h"
 #include "ui/widgets/tooltip.h"
+#include "ui/rp_widget.h"
 
 namespace Ui {
 class IconButton;
@@ -34,7 +35,11 @@ class FadeWrap;
 
 namespace Calls {
 
-class Panel : public TWidget, private base::Subscriber, private Ui::AbstractTooltipShower {
+class Panel
+	: public Ui::RpWidget
+	, private base::Subscriber
+	, private Ui::AbstractTooltipShower {
+
 public:
 	Panel(not_null<Call*> call);
 
@@ -51,7 +56,7 @@ protected:
 	void mouseMoveEvent(QMouseEvent *e) override;
 	void leaveEventHook(QEvent *e) override;
 	void leaveToChildEvent(QEvent *e, QWidget *child) override;
-	bool event(QEvent *e) override;
+	bool eventHook(QEvent *e) override;
 
 private:
 	using State = Call::State;

Telegram/SourceFiles/data/data_peer.cpp

@@ -957,6 +957,102 @@ void ChannelData::setAvailableMinId(MsgId availableMinId) {
 	}
 }
 
+void ChannelData::setPinnedMessageId(MsgId messageId) {
+	if (_pinnedMessageId != messageId) {
+		_pinnedMessageId = messageId;
+		Notify::peerUpdatedDelayed(this, Notify::PeerUpdate::Flag::ChannelPinnedChanged);
+	}
+}
+
+bool ChannelData::canBanMembers() const {
+	return (adminRights() & AdminRight::f_ban_users)
+		|| amCreator();
+}
+
+bool ChannelData::canEditMessages() const {
+	return (adminRights() & AdminRight::f_edit_messages)
+		|| amCreator();
+}
+
+bool ChannelData::canDeleteMessages() const {
+	return (adminRights() & AdminRight::f_delete_messages)
+		|| amCreator();
+}
+
+bool ChannelData::anyoneCanAddMembers() const {
+	return (flags() & MTPDchannel::Flag::f_democracy);
+}
+
+bool ChannelData::canAddMembers() const {
+	return (adminRights() & AdminRight::f_invite_users)
+		|| amCreator()
+		|| (anyoneCanAddMembers()
+			&& amIn()
+			&& !hasRestrictions());
+}
+
+bool ChannelData::canAddAdmins() const {
+	return (adminRights() & AdminRight::f_add_admins)
+		|| amCreator();
+}
+
+bool ChannelData::canPinMessages() const {
+	if (isMegagroup()) {
+		return (adminRights() & AdminRight::f_pin_messages)
+			|| amCreator();
+	}
+	return (adminRights() & AdminRight::f_edit_messages)
+		|| amCreator();
+}
+
+bool ChannelData::canPublish() const {
+	return (adminRights() & AdminRight::f_post_messages)
+		|| amCreator();
+}
+
+bool ChannelData::canWrite() const {
+	// Duplicated in Data::CanWriteValue().
+	return amIn()
+		&& (canPublish()
+			|| (!isBroadcast()
+				&& !restricted(Restriction::f_send_messages)));
+}
+
+bool ChannelData::canViewMembers() const {
+	return fullFlags()
+		& MTPDchannelFull::Flag::f_can_view_participants;
+}
+
+bool ChannelData::canViewAdmins() const {
+	return (isMegagroup() || hasAdminRights() || amCreator());
+}
+
+bool ChannelData::canViewBanned() const {
+	return (hasAdminRights() || amCreator());
+}
+
+bool ChannelData::canEditInformation() const {
+	return (adminRights() & AdminRight::f_change_info)
+		|| amCreator();
+}
+
+bool ChannelData::canEditUsername() const {
+	return amCreator()
+		&& (fullFlags()
+			& MTPDchannelFull::Flag::f_can_set_username);
+}
+
+bool ChannelData::canEditStickers() const {
+	return (fullFlags()
+		& MTPDchannelFull::Flag::f_can_set_stickers);
+}
+
+bool ChannelData::canDelete() const {
+	constexpr auto kDeleteChannelMembersLimit = 1000;
+	return amCreator()
+		&& (membersCount() <= kDeleteChannelMembersLimit);
+}
+
 bool ChannelData::canEditLastAdmin(not_null<UserData*> user) const {
 	// Duplicated in ParticipantsBoxController::canEditAdmin :(
 	if (mgInfo) {

Telegram/SourceFiles/data/data_peer.h

@@ -756,7 +756,6 @@ struct MegagroupInfo {
 
 	UserData *creator = nullptr; // nullptr means unknown
 	int botStatus = 0; // -1 - no bots, 0 - unknown, 1 - one bot, that sees all history, 2 - other
-	MsgId pinnedMsgId = 0;
 	bool joinedMessageFound = false;
 	MTPInputStickerSet stickerSet = MTP_inputStickerSetEmpty();
 
@@ -968,75 +967,22 @@ public:
 		return hasRestrictions()
 			&& (restrictedUntil() > now);
 	}
-	bool canBanMembers() const {
+	bool canBanMembers() const;
-		return (adminRights() & AdminRight::f_ban_users)
+	bool canEditMessages() const;
-			|| amCreator();
+	bool canDeleteMessages() const;
-	}
+	bool anyoneCanAddMembers() const;
-	bool canEditMessages() const {
+	bool canAddMembers() const;
-		return (adminRights() & AdminRight::f_edit_messages)
+	bool canAddAdmins() const;
-			|| amCreator();
+	bool canPinMessages() const;
-	}
+	bool canPublish() const;
-	bool canDeleteMessages() const {
+	bool canWrite() const;
-		return (adminRights() & AdminRight::f_delete_messages)
+	bool canViewMembers() const;
-			|| amCreator();
+	bool canViewAdmins() const;
-	}
+	bool canViewBanned() const;
-	bool anyoneCanAddMembers() const {
+	bool canEditInformation() const;
-		return (flags() & MTPDchannel::Flag::f_democracy);
+	bool canEditUsername() const;
-	}
+	bool canEditStickers() const;
-	bool canAddMembers() const {
+	bool canDelete() const;
-		return (adminRights() & AdminRight::f_invite_users)
-			|| amCreator()
-			|| (anyoneCanAddMembers()
-				&& amIn()
-				&& !hasRestrictions());
-	}
-	bool canAddAdmins() const {
-		return (adminRights() & AdminRight::f_add_admins)
-			|| amCreator();
-	}
-	bool canPinMessages() const {
-		return (adminRights() & AdminRight::f_pin_messages)
-			|| amCreator();
-	}
-	bool canPublish() const {
-		return (adminRights() & AdminRight::f_post_messages)
-			|| amCreator();
-	}
-	bool canWrite() const {
-		// Duplicated in Data::CanWriteValue().
-		return amIn()
-			&& (canPublish()
-				|| (!isBroadcast()
-					&& !restricted(Restriction::f_send_messages)));
-	}
-	bool canViewMembers() const {
-		return fullFlags()
-			& MTPDchannelFull::Flag::f_can_view_participants;
-	}
-	bool canViewAdmins() const {
-		return (isMegagroup() || hasAdminRights() || amCreator());
-	}
-	bool canViewBanned() const {
-		return (hasAdminRights() || amCreator());
-	}
-	bool canEditInformation() const {
-		return (adminRights() & AdminRight::f_change_info)
-			|| amCreator();
-	}
-	bool canEditUsername() const {
-		return amCreator()
-			&& (fullFlags()
-				& MTPDchannelFull::Flag::f_can_set_username);
-	}
-	bool canEditStickers() const {
-		return (fullFlags()
-			& MTPDchannelFull::Flag::f_can_set_stickers);
-	}
-	bool canDelete() const {
-		constexpr auto kDeleteChannelMembersLimit = 1000;
-		return amCreator()
-			&& (membersCount() <= kDeleteChannelMembersLimit);
-	}
 	bool canEditAdmin(not_null<UserData*> user) const;
 	bool canRestrictUser(not_null<UserData*> user) const;
 
@@ -1105,6 +1051,14 @@ public:
 	}
 	void setAvailableMinId(MsgId availableMinId);
 
+	MsgId pinnedMessageId() const {
+		return _pinnedMessageId;
+	}
+	void setPinnedMessageId(MsgId messageId);
+	void clearPinnedMessage() {
+		setPinnedMessageId(0);
+	}
+
 private:
 	void flagsUpdated(MTPDchannel::Flags diff);
 	void fullFlagsUpdated(MTPDchannelFull::Flags diff);
@@ -1121,6 +1075,7 @@ private:
 	int _restrictedCount = 0;
 	int _kickedCount = 0;
 	MsgId _availableMinId = 0;
+	MsgId _pinnedMessageId = 0;
 
 	AdminRightFlags _adminRights;
 	RestrictionFlags _restrictions;

Telegram/SourceFiles/history/history.cpp

@@ -1076,9 +1076,10 @@ HistoryItem *History::createItem(const MTPMessage &msg, bool applyServiceAction,
 			} break;
 
 			case mtpc_messageActionPinMessage: {
-				if (m.has_reply_to_msg_id() && result && result->history()->peer->isMegagroup()) {
+				if (m.has_reply_to_msg_id() && result) {
-					result->history()->peer->asChannel()->mgInfo->pinnedMsgId = m.vreply_to_msg_id.v;
+					if (auto channel = result->history()->peer->asChannel()) {
-					Notify::peerUpdatedDelayed(result->history()->peer, Notify::PeerUpdate::Flag::ChannelPinnedChanged);
+						channel->setPinnedMessageId(m.vreply_to_msg_id.v);
+					}
 				}
 			} break;
 
@@ -2355,8 +2356,8 @@ void History::clear(bool leaveItems) {
 		lastKeyboardInited = false;
 	} else {
 		setUnreadCount(0);
-		if (peer->isMegagroup()) {
+		if (auto channel = peer->asChannel()) {
-			peer->asChannel()->mgInfo->pinnedMsgId = 0;
+			channel->clearPinnedMessage();
 		}
 		clearLastKeyboard();
 	}

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -1219,8 +1219,8 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 				_menu->addAction(lang(lng_context_edit_msg), _widget, SLOT(onEditMessage()));
 			}
 			if (item->canPin()) {
-				bool ispinned = (item->history()->peer->asChannel()->mgInfo->pinnedMsgId == item->id);
+				auto isPinned = item->isPinned();
-				_menu->addAction(lang(ispinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, ispinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
+				_menu->addAction(lang(isPinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, isPinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
 			}
 		}
 		if (lnkPhoto) {
@@ -1293,8 +1293,8 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 					_menu->addAction(lang(lng_context_edit_msg), _widget, SLOT(onEditMessage()));
 				}
 				if (item->canPin()) {
-					bool ispinned = (item->history()->peer->asChannel()->mgInfo->pinnedMsgId == item->id);
+					auto isPinned = item->isPinned();
-					_menu->addAction(lang(ispinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, ispinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
+					_menu->addAction(lang(isPinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, isPinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
 				}
 			}
 		} else {
@@ -1306,8 +1306,8 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 					_menu->addAction(lang(lng_context_edit_msg), _widget, SLOT(onEditMessage()));
 				}
 				if (item->canPin()) {
-					bool ispinned = (item->history()->peer->asChannel()->mgInfo->pinnedMsgId == item->id);
+					auto isPinned = item->isPinned();
-					_menu->addAction(lang(ispinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, ispinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
+					_menu->addAction(lang(isPinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, isPinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
 				}
 			}
 			if (item && !isUponSelected) {

Telegram/SourceFiles/history/history_item.cpp

@@ -649,9 +649,9 @@ void HistoryItem::finishEditionToEmpty() {
 	finishEdition(-1);
 
 	_history->removeNotification(this);
-	if (history()->isChannel()) {
+	if (auto channel = history()->peer->asChannel()) {
-		if (history()->peer->isMegagroup() && history()->peer->asChannel()->mgInfo->pinnedMsgId == id) {
+		if (channel->pinnedMessageId() == id) {
-			history()->peer->asChannel()->mgInfo->pinnedMsgId = 0;
+			channel->clearPinnedMessage();
 		}
 	}
 	if (history()->lastKeyboardId == id) {
@@ -735,9 +735,9 @@ void HistoryItem::destroy() {
 		auto wasAtBottom = history()->loadedAtBottom();
 		_history->removeNotification(this);
 		detach();
-		if (history()->isChannel()) {
+		if (auto channel = history()->peer->asChannel()) {
-			if (history()->peer->isMegagroup() && history()->peer->asChannel()->mgInfo->pinnedMsgId == id) {
+			if (channel->pinnedMessageId() == id) {
-				history()->peer->asChannel()->mgInfo->pinnedMsgId = 0;
+				channel->clearPinnedMessage();
 			}
 		}
 		if (history()->lastMsg == this) {
@@ -846,11 +846,18 @@ void HistoryItem::setId(MsgId newId) {
 	}
 }
 
+bool HistoryItem::isPinned() const {
+	if (auto channel = _history->peer->asChannel()) {
+		return (channel->pinnedMessageId() == id);
+	}
+	return false;
+}
+
 bool HistoryItem::canPin() const {
-	if (id < 0 || !_history->peer->isMegagroup() || !toHistoryMessage()) {
+	if (id < 0 || !toHistoryMessage()) {
 		return false;
 	}
-	if (auto channel = _history->peer->asMegagroup()) {
+	if (auto channel = _history->peer->asChannel()) {
 		return channel->canPinMessages();
 	}
 	return false;
@@ -873,7 +880,13 @@ bool HistoryItem::canForward() const {
 
 bool HistoryItem::canEdit(const QDateTime &cur) const {
 	auto messageToMyself = _history->peer->isSelf();
-	auto messageTooOld = messageToMyself
+	auto canPinInMegagroup = [&] {
+		if (auto megagroup = _history->peer->asMegagroup()) {
+			return megagroup->canPinMessages();
+		}
+		return false;
+	}();
+	auto messageTooOld = (messageToMyself || canPinInMegagroup)
 		? false
 		: (date.secsTo(cur) >= Global::EditTimeLimit());
 	if (id < 0 || messageTooOld) {

Telegram/SourceFiles/history/history_item.h

@@ -749,6 +749,7 @@ public:
 		return _text.isEmpty();
 	}
 
+	bool isPinned() const;
 	bool canPin() const;
 	bool canForward() const;
 	bool canEdit(const QDateTime &cur) const;

Telegram/SourceFiles/history/history_top_bar_widget.cpp

@@ -395,7 +395,11 @@ void HistoryTopBarWidget::updateControlsGeometry() {
 	_clearSelection->moveToRight(st::topBarActionSkip, selectedButtonsTop);
 
 	if (_unreadBadge) {
-		_unreadBadge->setGeometryToLeft(0, st::titleUnreadCounterTop, _back->width(), st::dialogsUnreadHeight);
+		_unreadBadge->setGeometryToLeft(
+			0,
+			otherButtonsTop + st::titleUnreadCounterTop,
+			_back->width(),
+			st::dialogsUnreadHeight);
 	}
 	if (_back->isHidden()) {
 		_leftTaken = st::topBarArrowPadding.right();

Telegram/SourceFiles/history/history_widget.cpp

@@ -725,6 +725,7 @@ HistoryWidget::HistoryWidget(QWidget *parent, not_null<Window::Controller*> cont
 					updateHistoryGeometry();
 					updateControlsVisibility();
 					updateControlsGeometry();
+					this->update();
 				}
 			}
 			if (update.flags & (UpdateFlag::UserIsBlocked
@@ -5236,8 +5237,8 @@ void HistoryWidget::updatePinnedBar(bool force) {
 		_pinnedBar->text.setText(st::messageTextStyle, TextUtilities::Clean(_pinnedBar->msg->notificationText()), _textDlgOptions);
 		update();
 	} else if (force) {
-		if (_peer && _peer->isMegagroup()) {
+		if (auto channel = _peer ? _peer->asChannel() : nullptr) {
-			_peer->asChannel()->mgInfo->pinnedMsgId = 0;
+			channel->clearPinnedMessage();
 		}
 		destroyPinnedBar();
 		updateControlsGeometry();
@@ -5246,21 +5247,26 @@ void HistoryWidget::updatePinnedBar(bool force) {
 
 bool HistoryWidget::pinnedMsgVisibilityUpdated() {
 	auto result = false;
-	auto pinnedMsgId = (_peer && _peer->isMegagroup()) ? _peer->asChannel()->mgInfo->pinnedMsgId : 0;
+	auto pinnedId = [&] {
-	if (pinnedMsgId && !_peer->asChannel()->canPinMessages()) {
+		if (auto channel = _peer ? _peer->asChannel() : nullptr) {
+			return channel->pinnedMessageId();
+		}
+		return 0;
+	}();
+	if (pinnedId && !_peer->asChannel()->canPinMessages()) {
 		auto it = Global::HiddenPinnedMessages().constFind(_peer->id);
 		if (it != Global::HiddenPinnedMessages().cend()) {
-			if (it.value() == pinnedMsgId) {
+			if (it.value() == pinnedId) {
-				pinnedMsgId = 0;
+				pinnedId = 0;
 			} else {
 				Global::RefHiddenPinnedMessages().remove(_peer->id);
 				Local::writeUserSettings();
 			}
 		}
 	}
-	if (pinnedMsgId) {
+	if (pinnedId) {
 		if (!_pinnedBar) {
-			_pinnedBar = std::make_unique<PinnedBar>(pinnedMsgId, this);
+			_pinnedBar = std::make_unique<PinnedBar>(pinnedId, this);
 			if (_a_show.animating()) {
 				_pinnedBar->cancel->hide();
 				_pinnedBar->shadow->hide();
@@ -5277,9 +5283,9 @@ bool HistoryWidget::pinnedMsgVisibilityUpdated() {
 			if (_scroll->scrollTop() != unreadBarTop()) {
 				synteticScrollToY(_scroll->scrollTop() + st::historyReplyHeight);
 			}
-		} else if (_pinnedBar->msgId != pinnedMsgId) {
+		} else if (_pinnedBar->msgId != pinnedId) {
-			_pinnedBar->msgId = pinnedMsgId;
+			_pinnedBar->msgId = pinnedId;
-			_pinnedBar->msg = 0;
+			_pinnedBar->msg = nullptr;
 			_pinnedBar->text.clear();
 			updatePinnedBar();
 		}
@@ -5541,26 +5547,30 @@ void HistoryWidget::onEditMessage() {
 }
 
 void HistoryWidget::onPinMessage() {
-	HistoryItem *to = App::contextItem();
+	auto to = App::contextItem();
-	if (!to || !to->canPin() || !_peer || !_peer->isMegagroup()) return;
+	if (!to || !to->canPin()) return;
 
-	Ui::show(Box<PinMessageBox>(_peer->asChannel(), to->id));
+	Ui::show(Box<PinMessageBox>(
+		to->history()->peer->asChannel(),
+		to->id));
 }
 
 void HistoryWidget::onUnpinMessage() {
-	if (!_peer || !_peer->isMegagroup()) return;
+	if (!_peer || !_peer->isChannel()) return;
 
 	Ui::show(Box<ConfirmBox>(lang(lng_pinned_unpin_sure), lang(lng_pinned_unpin), base::lambda_guarded(this, [this] {
-		if (!_peer || !_peer->isMegagroup()) return;
+		auto channel = _peer ? _peer->asChannel() : nullptr;
+		if (!channel) return;
 
-		_peer->asChannel()->mgInfo->pinnedMsgId = 0;
+		channel->clearPinnedMessage();
-		if (pinnedMsgVisibilityUpdated()) {
-			updateControlsGeometry();
-			update();
-		}
 
 		Ui::hideLayer();
-		MTP::send(MTPchannels_UpdatePinnedMessage(MTP_flags(0), _peer->asChannel()->inputChannel, MTP_int(0)), rpcDone(&HistoryWidget::unpinDone));
+		MTP::send(
+			MTPchannels_UpdatePinnedMessage(
+				MTP_flags(0),
+				channel->inputChannel,
+				MTP_int(0)),
+			rpcDone(&HistoryWidget::unpinDone));
 	})));
 }
 
@@ -5571,8 +5581,9 @@ void HistoryWidget::unpinDone(const MTPUpdates &updates) {
 }
 
 void HistoryWidget::onPinnedHide() {
-	if (!_peer || !_peer->isMegagroup()) return;
+	auto channel = _peer ? _peer->asChannel() : nullptr;
-	if (!_peer->asChannel()->mgInfo->pinnedMsgId) {
+	auto pinnedId = channel->pinnedMessageId();
+	if (!pinnedId) {
 		if (pinnedMsgVisibilityUpdated()) {
 			updateControlsGeometry();
 			update();
@@ -5580,10 +5591,10 @@ void HistoryWidget::onPinnedHide() {
 		return;
 	}
 
-	if (_peer->asChannel()->canPinMessages()) {
+	if (channel->canPinMessages()) {
 		onUnpinMessage();
 	} else {
-		Global::RefHiddenPinnedMessages().insert(_peer->id, _peer->asChannel()->mgInfo->pinnedMsgId);
+		Global::RefHiddenPinnedMessages().insert(_peer->id, pinnedId);
 		Local::writeUserSettings();
 		if (pinnedMsgVisibilityUpdated()) {
 			updateControlsGeometry();

Telegram/SourceFiles/mainwidget.cpp

@@ -5449,12 +5449,8 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 
 	case mtpc_updateChannelPinnedMessage: {
 		auto &d = update.c_updateChannelPinnedMessage();
-
 		if (auto channel = App::channelLoaded(d.vchannel_id.v)) {
-			if (channel->isMegagroup()) {
+			channel->setPinnedMessageId(d.vid.v);
-				channel->mgInfo->pinnedMsgId = d.vid.v;
-				Auth().api().fullPeerUpdated().notify(channel);
-			}
 		}
 	} break;