Implement jump-to-date in topics.

Telegram/SourceFiles/apiwrap.cpp

@@ -2834,13 +2834,16 @@ void ApiWrap::resolveJumpToDate(
 		const QDate &date,
 		Fn<void(not_null<PeerData*>, MsgId)> callback) {
 	if (const auto peer = chat.peer()) {
-		resolveJumpToHistoryDate(peer, date, std::move(callback));
+		const auto topic = chat.topic();
+		const auto rootId = topic ? topic->rootId() : 0;
+		resolveJumpToHistoryDate(peer, rootId, date, std::move(callback));
 	}
 }
 
 template <typename Callback>
 void ApiWrap::requestMessageAfterDate(
 		not_null<PeerData*> peer,
+		MsgId topicRootId,
 		const QDate &date,
 		Callback &&callback) {
 	// API returns a message with date <= offset_date.
@@ -2853,48 +2856,40 @@ void ApiWrap::requestMessageAfterDate(
 	const auto maxId = 0;
 	const auto minId = 0;
 	const auto historyHash = uint64(0);
-	request(MTPmessages_GetHistory(
+
-		peer->input,
+	auto send = [&](auto &&serialized) {
-		MTP_int(offsetId),
+		request(std::move(serialized)).done([
-		MTP_int(offsetDate),
-		MTP_int(addOffset),
-		MTP_int(limit),
-		MTP_int(maxId),
-		MTP_int(minId),
-		MTP_long(historyHash)
-	)).done([
 			=,
 			callback = std::forward<Callback>(callback)
 		](const MTPmessages_Messages &result) {
-		auto getMessagesList = [&]() -> const QVector<MTPMessage>* {
+			const auto handleMessages = [&](auto &messages) {
-			auto handleMessages = [&](auto &messages) {
 				_session->data().processUsers(messages.vusers());
 				_session->data().processChats(messages.vchats());
 				return &messages.vmessages().v;
 			};
-			switch (result.type()) {
+			const auto list = result.match([&](
-			case mtpc_messages_messages:
+					const MTPDmessages_messages &data) {
 				return handleMessages(result.c_messages_messages());
-			case mtpc_messages_messagesSlice:
+			}, [&](const MTPDmessages_messagesSlice &data) {
 				return handleMessages(result.c_messages_messagesSlice());
-			case mtpc_messages_channelMessages: {
+			}, [&](const MTPDmessages_channelMessages &data) {
-				auto &messages = result.c_messages_channelMessages();
+				const auto &messages = result.c_messages_channelMessages();
 				if (peer && peer->isChannel()) {
 					peer->asChannel()->ptsReceived(messages.vpts().v);
 				} else {
-					LOG(("API Error: received messages.channelMessages when no channel was passed! (ApiWrap::jumpToDate)"));
+					LOG(("API Error: received messages.channelMessages when "
+						"no channel was passed! (ApiWrap::jumpToDate)"));
 				}
 				return handleMessages(messages);
-			} break;
+			}, [&](const MTPDmessages_messagesNotModified &) {
-			case mtpc_messages_messagesNotModified: {
+				LOG(("API Error: received messages.messagesNotModified! "
-				LOG(("API Error: received messages.messagesNotModified! (ApiWrap::jumpToDate)"));
+					"(ApiWrap::jumpToDate)"));
-			} break;
+				return (const QVector<MTPMessage>*)nullptr;
-			}
+			});
-			return nullptr;
+			if (list) {
-		};
+				_session->data().processMessages(
-
+					*list,
-		if (const auto list = getMessagesList()) {
+					NewMessageType::Existing);
-			_session->data().processMessages(*list, NewMessageType::Existing);
 				for (const auto &message : *list) {
 					if (DateFromMessage(message) >= offsetDate) {
 						callback(IdFromMessage(message));
@@ -2904,24 +2899,52 @@ void ApiWrap::requestMessageAfterDate(
 			}
 			callback(ShowAtUnreadMsgId);
 		}).send();
+	};
+	if (topicRootId) {
+		send(MTPmessages_GetReplies(
+			peer->input,
+			MTP_int(topicRootId),
+			MTP_int(offsetId),
+			MTP_int(offsetDate),
+			MTP_int(addOffset),
+			MTP_int(limit),
+			MTP_int(maxId),
+			MTP_int(minId),
+			MTP_long(historyHash)));
+	} else {
+		send(MTPmessages_GetHistory(
+			peer->input,
+			MTP_int(offsetId),
+			MTP_int(offsetDate),
+			MTP_int(addOffset),
+			MTP_int(limit),
+			MTP_int(maxId),
+			MTP_int(minId),
+			MTP_long(historyHash)));
+	}
 }
 
 void ApiWrap::resolveJumpToHistoryDate(
 		not_null<PeerData*> peer,
+		MsgId topicRootId,
 		const QDate &date,
 		Fn<void(not_null<PeerData*>, MsgId)> callback) {
 	if (const auto channel = peer->migrateTo()) {
-		return resolveJumpToHistoryDate(channel, date, std::move(callback));
+		return resolveJumpToHistoryDate(
+			channel,
+			topicRootId,
+			date,
+			std::move(callback));
 	}
 	const auto jumpToDateInPeer = [=] {
-		requestMessageAfterDate(peer, date, [=](MsgId resultId) {
+		requestMessageAfterDate(peer, topicRootId, date, [=](MsgId itemId) {
-			callback(peer, resultId);
+			callback(peer, itemId);
 		});
 	};
-	if (const auto chat = peer->migrateFrom()) {
+	if (const auto chat = topicRootId ? nullptr : peer->migrateFrom()) {
-		requestMessageAfterDate(chat, date, [=](MsgId resultId) {
+		requestMessageAfterDate(chat, 0, date, [=](MsgId itemId) {
-			if (resultId) {
+			if (itemId) {
-				callback(chat, resultId);
+				callback(chat, itemId);
 			} else {
 				jumpToDateInPeer();
 			}

Telegram/SourceFiles/apiwrap.h

@@ -454,11 +454,13 @@ private:
 
 	void resolveJumpToHistoryDate(
 		not_null<PeerData*> peer,
+		MsgId topicRootId,
 		const QDate &date,
 		Fn<void(not_null<PeerData*>, MsgId)> callback);
 	template <typename Callback>
 	void requestMessageAfterDate(
 		not_null<PeerData*> peer,
+		MsgId topicRootId,
 		const QDate &date,
 		Callback &&callback);
 

Telegram/SourceFiles/data/data_forum.cpp

@@ -223,7 +223,9 @@ void Forum::applyReceivedTopics(
 }
 
 void Forum::requestSomeStale() {
-	if (_staleRequestId || (!_offset.id && _requestId)) {
+	if (_staleRequestId
+		|| (!_offset.id && _requestId)
+		|| _staleRootIds.empty()) {
 		return;
 	}
 	const auto type = Histories::RequestType::History;
@@ -241,6 +243,9 @@ void Forum::requestSomeStale() {
 			break;
 		}
 	}
+	if (rootIds.empty()) {
+		return;
+	}
 	const auto call = [=] {
 		for (const auto &id : rootIds) {
 			finishTopicRequest(id.v);

Telegram/SourceFiles/dialogs/dialogs_widget.cpp

@@ -779,7 +779,11 @@ void Widget::refreshTopBars() {
 			_subsectionTopBar->searchQuery(
 			) | rpl::start_with_next([=](QString query) {
 				applyFilterUpdate();
-			}, lifetime());
+			}, _subsectionTopBar->lifetime());
+			_subsectionTopBar->jumpToDateRequest(
+			) | rpl::start_with_next([=] {
+				showCalendar();
+			}, _subsectionTopBar->lifetime());
 			updateControlsGeometry();
 		}
 		const auto history = _openedForum
@@ -1386,14 +1390,16 @@ void Widget::searchTopics() {
 		MTP_int(kSearchPerPage)
 	)).done([=](const MTPmessages_ForumTopics &result) {
 		_topicSearchRequest = 0;
-		const auto savedTopicId = _topicSearchOffsetId;
+		const auto savedTopicId = _topicSearchOffsetTopicId;
 		const auto byCreation = result.data().is_order_by_create_date();
 		_openedForum->forum()->applyReceivedTopics(result, [&](
 				not_null<Data::ForumTopic*> topic) {
 			_topicSearchOffsetTopicId = topic->rootId();
 			if (byCreation) {
-				_topicSearchOffsetId = _topicSearchOffsetTopicId;
 				_topicSearchOffsetDate = topic->creationDate();
+				if (const auto last = topic->lastServerMessage()) {
+					_topicSearchOffsetId = last->id;
+				}
 			} else if (const auto last = topic->lastServerMessage()) {
 				_topicSearchOffsetId = last->id;
 				_topicSearchOffsetDate = last->date();
@@ -1899,6 +1905,10 @@ void Widget::setSearchInChat(Key chat, PeerData *from) {
 		clearSearchCache();
 	}
 	_inner->searchInChat(_searchInChat, _searchFromAuthor);
+	if (_subsectionTopBar) {
+		_subsectionTopBar->searchEnableJumpToDate(
+			_openedForum && _searchInChat);
+	}
 	if (_searchFromAuthor && _lastFilterText == SwitchToChooseFromQuery()) {
 		cancelSearch();
 	}

Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp

@@ -23,6 +23,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/shortcuts.h"
 #include "core/application.h"
 #include "core/core_settings.h"
+#include "ui/wrap/fade_wrap.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/input_fields.h"
 #include "ui/widgets/popup_menu.h"
@@ -880,8 +881,10 @@ int TopBarWidget::countSelectedButtonsTop(float64 selectedShown) {
 }
 
 void TopBarWidget::updateSearchVisibility() {
-	const auto historyMode = (_activeChat.section == Section::History);
+	const auto searchAllowedMode = (_activeChat.section == Section::History)
-	_search->setVisible(historyMode && !_chooseForReportReason);
+		|| (_activeChat.section == Section::Replies
+			&& _activeChat.key.topic());
+	_search->setVisible(searchAllowedMode && !_chooseForReportReason);
 }
 
 void TopBarWidget::updateControlsGeometry() {
@@ -894,6 +897,7 @@ void TopBarWidget::updateControlsGeometry() {
 	if (!_searchMode && !_searchShown.animating() && _searchField) {
 		_searchField.destroy();
 		_searchCancel.destroy();
+		_jumpToDate.destroy();
 	}
 	auto searchFieldTop = _searchField
 		? countSelectedButtonsTop(_searchShown.value(_searchMode ? 1. : 0.))
@@ -966,6 +970,11 @@ void TopBarWidget::updateControlsGeometry() {
 		_searchCancel->moveToLeft(
 			right - _searchCancel->width(),
 			_searchField->y());
+		if (_jumpToDate) {
+			_jumpToDate->moveToLeft(
+				right - _jumpToDate->width(),
+				_searchField->y());
+		}
 		right -= _searchCancel->width();
 	}
 
@@ -1054,6 +1063,19 @@ void TopBarWidget::updateControlsVisibility() {
 			? (_activeChat.key.topic() != nullptr)
 			: false);
 	updateSearchVisibility();
+	if (_searchMode) {
+		const auto hasSearchQuery = _searchField
+			&& !_searchField->getLastText().isEmpty();
+		if (!_jumpToDate || hasSearchQuery) {
+			_searchCancel->show(anim::type::normal);
+			if (_jumpToDate) {
+				_jumpToDate->hide(anim::type::normal);
+			}
+		} else {
+			_searchCancel->hide(anim::type::normal);
+			_jumpToDate->show(anim::type::normal);
+		}
+	}
 	_menuToggle->setVisible(hasMenu
 		&& !_chooseForReportReason
 		&& !_narrowMode);
@@ -1201,7 +1223,13 @@ bool TopBarWidget::toggleSearch(bool shown, anim::type animated) {
 			_searchSubmitted.fire({});
 		});
 		QObject::connect(_searchField, &Ui::InputField::changed, [=] {
-			_searchQuery = _searchField->getLastText();
+			const auto wasEmpty = _searchQuery.current().isEmpty();
+			const auto query = _searchField->getLastText();
+			const auto nowEmpty = query.isEmpty();
+			if (_jumpToDate && nowEmpty != wasEmpty) {
+				updateControlsVisibility();
+			}
+			_searchQuery = query;
 		});
 	} else {
 		Assert(_searchField != nullptr);
@@ -1224,6 +1252,27 @@ bool TopBarWidget::toggleSearch(bool shown, anim::type animated) {
 	return true;
 }
 
+void TopBarWidget::searchEnableJumpToDate(bool enable) {
+	if (!_searchMode && !enable) {
+		return;
+	} else if (enable) {
+		_jumpToDate.create(
+			this,
+			object_ptr<Ui::IconButton>(this, st::dialogsCalendar));
+		_jumpToDate->toggle(
+			_searchField->getLastText().isEmpty(),
+			anim::type::instant);
+		_jumpToDate->entity()->clicks(
+		) | rpl::to_empty | rpl::start_to_stream(
+			_jumpToDateRequests,
+			_jumpToDate->lifetime());
+	} else {
+		_jumpToDate.destroy();
+	}
+	updateControlsVisibility();
+	updateControlsGeometry();
+}
+
 bool TopBarWidget::searchSetFocus() {
 	if (!_searchMode) {
 		return false;

Telegram/SourceFiles/history/view/history_view_top_bar_widget.h

@@ -77,6 +77,7 @@ public:
 	void clearChooseMessagesForReport();
 
 	bool toggleSearch(bool shown, anim::type animated);
+	void searchEnableJumpToDate(bool enable);
 	bool searchSetFocus();
 	[[nodiscard]] bool searchHasFocus() const;
 	[[nodiscard]] rpl::producer<> searchCancelled() const;
@@ -100,6 +101,9 @@ public:
 	[[nodiscard]] rpl::producer<> cancelChooseForReportRequest() const {
 		return _cancelChooseForReport.events();
 	}
+	[[nodiscard]] rpl::producer<> jumpToDateRequest() const {
+		return _jumpToDateRequests.events();
+	}
 	[[nodiscard]] rpl::producer<> searchRequest() const;
 
 protected:
@@ -198,6 +202,7 @@ private:
 	rpl::variable<QString> _searchQuery;
 	rpl::event_stream<> _searchCancelled;
 	rpl::event_stream<> _searchSubmitted;
+	rpl::event_stream<> _jumpToDateRequests;
 
 	object_ptr<Ui::IconButton> _back;
 	object_ptr<Ui::IconButton> _cancelChoose;

Telegram/SourceFiles/window/window_session_controller.cpp

@@ -1396,12 +1396,18 @@ void SessionController::startOrJoinGroupCall(
 }
 
 void SessionController::showCalendar(Dialogs::Key chat, QDate requestedDate) {
-	const auto history = chat.history();
+	const auto topic = chat.topic();
+	const auto history = chat.owningHistory();
 	if (!history) {
 		return;
 	}
 	const auto currentPeerDate = [&] {
-		if (history->scrollTopItem) {
+		if (topic) {
+			if (const auto item = topic->lastMessage()) {
+				return base::unixtime::parse(item->date()).date();
+			}
+			return QDate();
+		} else if (history->scrollTopItem) {
 			return history->scrollTopItem->dateTime().date();
 		} else if (history->loadedAtTop()
 			&& !history->isEmpty()
@@ -1419,6 +1425,12 @@ void SessionController::showCalendar(Dialogs::Key chat, QDate requestedDate) {
 		return QDate();
 	}();
 	const auto maxPeerDate = [&] {
+		if (topic) {
+			if (const auto item = topic->lastMessage()) {
+				return base::unixtime::parse(item->date()).date();
+			}
+			return QDate();
+		}
 		const auto check = history->peer->migrateTo()
 			? history->owner().historyLoaded(history->peer->migrateTo())
 			: history;
@@ -1428,11 +1440,13 @@ void SessionController::showCalendar(Dialogs::Key chat, QDate requestedDate) {
 		return QDate();
 	}();
 	const auto minPeerDate = [&] {
-		const auto startDate = [] {
+		const auto startDate = [&] {
 			// Telegram was launched in August 2013 :)
 			return QDate(2013, 8, 1);
 		};
-		if (const auto chat = history->peer->migrateFrom()) {
+		if (topic) {
+			return base::unixtime::parse(topic->creationDate()).date();
+		} else if (const auto chat = history->peer->migrateFrom()) {
 			if (const auto history = chat->owner().historyLoaded(chat)) {
 				if (history->loadedAtTop()) {
 					if (!history->isEmpty()) {
@@ -1515,13 +1529,28 @@ void SessionController::showCalendar(Dialogs::Key chat, QDate requestedDate) {
 		}
 	};
 	const auto weak = base::make_weak(this);
+	const auto weakTopic = base::make_weak(topic);
 	const auto jump = [=](const QDate &date) {
 		const auto open = [=](not_null<PeerData*> peer, MsgId id) {
 			if (const auto strong = weak.get()) {
-				strong->showPeerHistory(peer, SectionShow::Way::Forward, id);
+				if (!topic) {
+					strong->showPeerHistory(
+						peer,
+						SectionShow::Way::Forward,
+						id);
+				} else if (const auto strongTopic = weakTopic.get()) {
+					strong->showRepliesForMessage(
+						strongTopic->history(),
+						strongTopic->rootId(),
+						id,
+						SectionShow::Way::Forward);
+					strong->hideLayer(anim::type::normal);
+				}
 			}
 		};
+		if (!topic || weakTopic) {
 			session().api().resolveJumpToDate(chat, date, open);
+		}
 	};
 	show(Box<Ui::CalendarBox>(Ui::CalendarBoxArgs{
 		.month = highlighted,