Poll data and updates handling added.

Telegram/SourceFiles/apiwrap.cpp

@@ -2797,7 +2797,7 @@ void ApiWrap::gotWebPages(ChannelData *channel, const MTPmessages_Messages &msgs
 			++i;
 		}
 	}
-	_session->data().sendWebPageGameNotifications();
+	_session->data().sendWebPageGamePollNotifications();
 }
 
 void ApiWrap::stickersSaveOrder() {

Telegram/SourceFiles/data/data_media_types.cpp

@@ -152,6 +152,10 @@ LocationData *Media::location() const {
 	return nullptr;
 }
 
+PollData *Media::poll() const {
+	return nullptr;
+}
+
 bool Media::uploading() const {
 	return false;
 }
@@ -1178,4 +1182,52 @@ std::unique_ptr<HistoryMedia> MediaInvoice::createView(
 	return std::make_unique<HistoryInvoice>(message, &_invoice);
 }
 
+MediaPoll::MediaPoll(
+	not_null<HistoryItem*> parent,
+	not_null<PollData*> poll)
+: Media(parent)
+, _poll(poll) {
+}
+
+MediaPoll::~MediaPoll() {
+}
+
+std::unique_ptr<Media> MediaPoll::clone(not_null<HistoryItem*> parent) {
+	return std::make_unique<MediaPoll>(parent, _poll);
+}
+
+PollData *MediaPoll::poll() const {
+	return _poll;
+}
+
+QString MediaPoll::chatsListText() const {
+	return QString(); // #TODO polls
+}
+
+QString MediaPoll::notificationText() const {
+	return QString(); // #TODO polls
+}
+
+QString MediaPoll::pinnedTextSubstring() const {
+	return QString(); // #TODO polls
+}
+
+TextWithEntities MediaPoll::clipboardText() const {
+	return TextWithEntities(); // #TODO polls
+}
+
+bool MediaPoll::updateInlineResultMedia(const MTPMessageMedia &media) {
+	return false;
+}
+
+bool MediaPoll::updateSentMedia(const MTPMessageMedia &media) {
+	return false;
+}
+
+std::unique_ptr<HistoryMedia> MediaPoll::createView(
+		not_null<HistoryView::Element*> message,
+		not_null<HistoryItem*> realParent) {
+	return nullptr;
+}
+
 } // namespace Data

Telegram/SourceFiles/data/data_media_types.h

@@ -41,7 +41,6 @@ struct SharedContact {
 	QString firstName;
 	QString lastName;
 	QString phoneNumber;
-
 };
 
 struct Call {
@@ -49,7 +48,6 @@ struct Call {
 
 	int duration = 0;
 	FinishReason finishReason = FinishReason::Missed;
-
 };
 
 struct Invoice {
@@ -60,7 +58,6 @@ struct Invoice {
 	QString description;
 	PhotoData *photo = nullptr;
 	bool isTest = false;
-
 };
 
 class Media {
@@ -80,6 +77,7 @@ public:
 	virtual GameData *game() const;
 	virtual const Invoice *invoice() const;
 	virtual LocationData *location() const;
+	virtual PollData *poll() const;
 
 	virtual bool uploading() const;
 	virtual Storage::SharedMediaTypesMask sharedMediaTypes() const;
@@ -381,6 +379,33 @@ private:
 
 };
 
+class MediaPoll : public Media {
+public:
+	MediaPoll(
+		not_null<HistoryItem*> parent,
+		not_null<PollData*> poll);
+	~MediaPoll();
+
+	std::unique_ptr<Media> clone(not_null<HistoryItem*> parent) override;
+
+	PollData *poll() const override;
+
+	QString chatsListText() const override;
+	QString notificationText() const override;
+	QString pinnedTextSubstring() const override;
+	TextWithEntities clipboardText() const override;
+
+	bool updateInlineResultMedia(const MTPMessageMedia &media) override;
+	bool updateSentMedia(const MTPMessageMedia &media) override;
+	std::unique_ptr<HistoryMedia> createView(
+		not_null<HistoryView::Element*> message,
+		not_null<HistoryItem*> realParent) override;
+
+private:
+	not_null<PollData*> _poll;
+
+};
+
 TextWithEntities WithCaptionClipboardText(
 	const QString &attachType,
 	TextWithEntities &&caption);

Telegram/SourceFiles/data/data_poll.cpp

@@ -0,0 +1,122 @@
+/*
+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 "data/data_poll.h"
+
+namespace {
+
+const PollAnswer *AnswerByOption(
+		const std::vector<PollAnswer> &list,
+		const QByteArray &option) {
+	const auto i = ranges::find(
+		list,
+		option,
+		[](const PollAnswer &a) { return a.option; });
+	return (i != end(list)) ? &*i : nullptr;
+}
+
+PollAnswer *AnswerByOption(
+		std::vector<PollAnswer> &list,
+		const QByteArray &option) {
+	return const_cast<PollAnswer*>(AnswerByOption(
+		std::as_const(list),
+		option));
+}
+
+} // namespace
+
+PollData::PollData(PollId id) : id(id) {
+}
+
+bool PollData::applyChanges(const MTPDpoll &poll) {
+	Expects(poll.vid.v == id);
+
+	const auto newQuestion = qs(poll.vquestion);
+	const auto newClosed = poll.is_closed();
+	auto newAnswers = ranges::view::all(
+		poll.vanswers.v
+	) | ranges::view::transform([](const MTPPollAnswer &data) {
+		return data.match([](const MTPDpollAnswer &answer) {
+			auto result = PollAnswer();
+			result.option = answer.voption.v;
+			result.text = qs(answer.vtext);
+			return result;
+		});
+	}) | ranges::to_vector;
+
+	const auto changed1 = (question != newQuestion)
+		|| (closed != newClosed);
+	const auto changed2 = (answers != newAnswers);
+	if (!changed1 && !changed2) {
+		return false;
+	}
+	if (changed1) {
+		question = newQuestion;
+		closed = newClosed;
+	}
+	if (changed2) {
+		std::swap(answers, newAnswers);
+		for (const auto &old : newAnswers) {
+			if (const auto current = answerByOption(old.option)) {
+				current->votes = old.votes;
+				current->chosen = old.chosen;
+			}
+		}
+	}
+	return true;
+}
+
+bool PollData::applyResults(const MTPPollResults &results) {
+	return results.match([&](const MTPDpollResults &results) {
+		const auto newTotalVoters = results.has_total_voters()
+			? results.vtotal_voters.v
+			: totalVoters;
+		auto changed = (newTotalVoters != totalVoters);
+		if (results.has_results()) {
+			for (const auto &result : results.vresults.v) {
+				if (applyResultToAnswers(result, results.is_min())) {
+					changed = true;
+				}
+			}
+		}
+		totalVoters = newTotalVoters;
+		return changed;
+	});
+}
+
+PollAnswer *PollData::answerByOption(const QByteArray &option) {
+	return AnswerByOption(answers, option);
+}
+
+const PollAnswer *PollData::answerByOption(const QByteArray &option) const {
+	return AnswerByOption(answers, option);
+}
+
+bool PollData::applyResultToAnswers(
+		const MTPPollAnswerVoters &result,
+		bool isMinResults) {
+	return result.match([&](const MTPDpollAnswerVoters &voters) {
+		const auto &option = voters.voption.v;
+		const auto answer = answerByOption(option);
+		if (!answer) {
+			return false;
+		}
+		auto changed = (answer->votes != voters.vvoters.v);
+		if (changed) {
+			answer->votes = voters.vvoters.v;
+		}
+		if (!isMinResults) {
+			if (answer->chosen != voters.is_chosen()) {
+				answer->chosen = voters.is_chosen();
+				changed = true;
+			}
+		} else if (const auto existing = answerByOption(option)) {
+			answer->chosen = existing->chosen;
+		}
+		return changed;
+	});
+}

Telegram/SourceFiles/data/data_poll.h

@@ -0,0 +1,46 @@
+/*
+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
+
+struct PollAnswer {
+	QString text;
+	QByteArray option;
+	int votes = 0;
+	bool chosen = false;
+};
+
+inline bool operator==(const PollAnswer &a, const PollAnswer &b) {
+	return (a.text == b.text)
+		&& (a.option == b.option);
+}
+
+inline bool operator!=(const PollAnswer &a, const PollAnswer &b) {
+	return !(a == b);
+}
+
+struct PollData {
+	explicit PollData(PollId id);
+
+	bool applyChanges(const MTPDpoll &poll);
+	bool applyResults(const MTPPollResults &results);
+
+	PollAnswer *answerByOption(const QByteArray &option);
+	const PollAnswer *answerByOption(const QByteArray &option) const;
+
+	PollId id = 0;
+	QString question;
+	std::vector<PollAnswer> answers;
+	int totalVoters = 0;
+	bool closed = false;
+
+private:
+	bool applyResultToAnswers(
+		const MTPPollAnswerVoters &result,
+		bool isMinResults);
+
+};

Telegram/SourceFiles/data/data_session.cpp

@@ -30,6 +30,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_document.h"
 #include "data/data_web_page.h"
 #include "data/data_game.h"
+#include "data/data_poll.h"
 
 namespace Data {
 namespace {
@@ -297,6 +298,14 @@ void Session::requestDocumentViewRepaint(
 	}
 }
 
+void Session::requestPollViewRepaint(not_null<const PollData*> poll) {
+	if (const auto i = _pollViews.find(poll); i != _pollViews.end()) {
+		for (const auto view : i->second) {
+			requestViewResize(view);
+		}
+	}
+}
+
 void Session::markMediaRead(not_null<const DocumentData*> document) {
 	const auto i = _documentItems.find(document);
 	if (i != end(_documentItems)) {
@@ -1490,6 +1499,55 @@ void Session::gameApplyFields(
 	notifyGameUpdateDelayed(game);
 }
 
+not_null<PollData*> Session::poll(PollId id) {
+	auto i = _polls.find(id);
+	if (i == _polls.cend()) {
+		i = _polls.emplace(id, std::make_unique<PollData>(id)).first;
+	}
+	return i->second.get();
+}
+
+not_null<PollData*> Session::poll(const MTPPoll &data) {
+	return data.match([&](const MTPDpoll &data) {
+		const auto id = data.vid.v;
+		const auto result = poll(id);
+		const auto changed = result->applyChanges(data);
+		if (changed) {
+			notifyPollUpdateDelayed(result);
+		}
+		return result;
+	});
+}
+
+not_null<PollData*> Session::poll(const MTPDmessageMediaPoll &data) {
+	const auto result = poll(data.vpoll);
+	const auto changed = result->applyResults(data.vresults);
+	if (changed) {
+		requestPollViewRepaint(result);
+	}
+	return result;
+}
+
+void Session::applyPollUpdate(const MTPDupdateMessagePoll &update) {
+	const auto poll = [&] {
+		if (update.has_poll()) {
+			return update.vpoll.match([&](const MTPDpoll &data) {
+				const auto i = _polls.find(data.vid.v);
+				return (i != end(_polls)) ? i->second.get() : nullptr;
+			});
+		}
+		const auto item = App::histItemById(
+			peerToChannel(peerFromMTP(update.vpeer)),
+			update.vmsg_id.v);
+		return (item && item->media())
+			? item->media()->poll()
+			: nullptr;
+	}();
+	if (poll && poll->applyResults(update.vresults)) {
+		requestPollViewRepaint(poll);
+	}
+}
+
 not_null<LocationData*> Session::location(const LocationCoords &coords) {
 	auto i = _locations.find(coords);
 	if (i == _locations.cend()) {
@@ -1590,6 +1648,24 @@ void Session::unregisterGameView(
 	}
 }
 
+void Session::registerPollView(
+		not_null<const PollData*> poll,
+		not_null<ViewElement*> view) {
+	_pollViews[poll].insert(view);
+}
+
+void Session::unregisterPollView(
+		not_null<const PollData*> poll,
+		not_null<ViewElement*> view) {
+	const auto i = _pollViews.find(poll);
+	if (i != _pollViews.end()) {
+		auto &items = i->second;
+		if (items.remove(view) && items.empty()) {
+			_pollViews.erase(i);
+		}
+	}
+}
+
 void Session::registerContactView(
 		UserId contactId,
 		not_null<ViewElement*> view) {
@@ -1714,23 +1790,37 @@ QString Session::findContactPhone(UserId contactId) const {
 	return QString();
 }
 
+bool Session::hasPendingWebPageGamePollNotification() const {
+	return !_webpagesUpdated.empty()
+		|| !_gamesUpdated.empty()
+		|| !_pollsUpdated.empty();
+}
+
 void Session::notifyWebPageUpdateDelayed(not_null<WebPageData*> page) {
-	const auto invoke = _webpagesUpdated.empty() && _gamesUpdated.empty();
+	const auto invoke = !hasPendingWebPageGamePollNotification();
 	_webpagesUpdated.insert(page);
 	if (invoke) {
-		crl::on_main(_session, [=] { sendWebPageGameNotifications(); });
+		crl::on_main(_session, [=] { sendWebPageGamePollNotifications(); });
 	}
 }
 
 void Session::notifyGameUpdateDelayed(not_null<GameData*> game) {
-	const auto invoke = _webpagesUpdated.empty() && _gamesUpdated.empty();
+	const auto invoke = !hasPendingWebPageGamePollNotification();
 	_gamesUpdated.insert(game);
 	if (invoke) {
-		crl::on_main(_session, [=] { sendWebPageGameNotifications(); });
+		crl::on_main(_session, [=] { sendWebPageGamePollNotifications(); });
 	}
 }
 
-void Session::sendWebPageGameNotifications() {
+void Session::notifyPollUpdateDelayed(not_null<PollData*> poll) {
+	const auto invoke = !hasPendingWebPageGamePollNotification();
+	_pollsUpdated.insert(poll);
+	if (invoke) {
+		crl::on_main(_session, [=] { sendWebPageGamePollNotifications(); });
+	}
+}
+
+void Session::sendWebPageGamePollNotifications() {
 	for (const auto page : base::take(_webpagesUpdated)) {
 		const auto i = _webpageViews.find(page);
 		if (i != _webpageViews.end()) {
@@ -1746,6 +1836,13 @@ void Session::sendWebPageGameNotifications() {
 			}
 		}
 	}
+	for (const auto poll : base::take(_pollsUpdated)) {
+		if (const auto i = _pollViews.find(poll); i != _pollViews.end()) {
+			for (const auto view : i->second) {
+				requestViewResize(view);
+			}
+		}
+	}
 }
 
 void Session::registerItemView(not_null<ViewElement*> view) {

Telegram/SourceFiles/data/data_session.h

@@ -246,6 +246,7 @@ public:
 		not_null<const DocumentData*> document);
 	void requestDocumentViewRepaint(not_null<const DocumentData*> document);
 	void markMediaRead(not_null<const DocumentData*> document);
+	void requestPollViewRepaint(not_null<const PollData*> poll);
 
 	not_null<PhotoData*> photo(PhotoId id);
 	not_null<PhotoData*> photo(const MTPPhoto &data);
@@ -330,6 +331,11 @@ public:
 		not_null<GameData*> original,
 		const MTPGame &data);
 
+	not_null<PollData*> poll(PollId id);
+	not_null<PollData*> poll(const MTPPoll &data);
+	not_null<PollData*> poll(const MTPDmessageMediaPoll &data);
+	void applyPollUpdate(const MTPDupdateMessagePoll &update);
+
 	not_null<LocationData*> location(const LocationCoords &coords);
 
 	void registerPhotoItem(
@@ -362,6 +368,12 @@ public:
 	void unregisterGameView(
 		not_null<const GameData*> game,
 		not_null<ViewElement*> view);
+	void registerPollView(
+		not_null<const PollData*> poll,
+		not_null<ViewElement*> view);
+	void unregisterPollView(
+		not_null<const PollData*> poll,
+		not_null<ViewElement*> view);
 	void registerContactView(
 		UserId contactId,
 		not_null<ViewElement*> view);
@@ -386,7 +398,9 @@ public:
 
 	void notifyWebPageUpdateDelayed(not_null<WebPageData*> page);
 	void notifyGameUpdateDelayed(not_null<GameData*> game);
-	void sendWebPageGameNotifications();
+	void notifyPollUpdateDelayed(not_null<PollData*> poll);
+	bool hasPendingWebPageGamePollNotification() const;
+	void sendWebPageGamePollNotifications();
 
 	void stopAutoplayAnimations();
 
@@ -604,21 +618,27 @@ private:
 	std::unordered_map<
 		WebPageId,
 		std::unique_ptr<WebPageData>> _webpages;
-	std::unordered_map<
-		LocationCoords,
-		std::unique_ptr<LocationData>> _locations;
 	std::map<
 		not_null<const WebPageData*>,
 		base::flat_set<not_null<HistoryItem*>>> _webpageItems;
 	std::map<
 		not_null<const WebPageData*>,
 		base::flat_set<not_null<ViewElement*>>> _webpageViews;
+	std::unordered_map<
+		LocationCoords,
+		std::unique_ptr<LocationData>> _locations;
+	std::unordered_map<
+		PollId,
+		std::unique_ptr<PollData>> _polls;
 	std::unordered_map<
 		GameId,
 		std::unique_ptr<GameData>> _games;
 	std::map<
 		not_null<const GameData*>,
 		base::flat_set<not_null<ViewElement*>>> _gameViews;
+	std::map<
+		not_null<const PollData*>,
+		base::flat_set<not_null<ViewElement*>>> _pollViews;
 	std::map<
 		UserId,
 		base::flat_set<not_null<HistoryItem*>>> _contactItems;
@@ -631,6 +651,7 @@ private:
 
 	base::flat_set<not_null<WebPageData*>> _webpagesUpdated;
 	base::flat_set<not_null<GameData*>> _gamesUpdated;
+	base::flat_set<not_null<PollData*>> _pollsUpdated;
 
 	std::deque<Dialogs::Key> _pinnedDialogs;
 	base::flat_map<FeedId, std::unique_ptr<Feed>> _feeds;

Telegram/SourceFiles/data/data_types.h

@@ -243,6 +243,7 @@ class DocumentData;
 class PhotoData;
 struct WebPageData;
 struct GameData;
+struct PollData;
 
 class AudioMsgId;
 class PhotoClickHandler;
@@ -262,6 +263,7 @@ using AudioId = uint64;
 using DocumentId = uint64;
 using WebPageId = uint64;
 using GameId = uint64;
+using PollId = uint64;
 constexpr auto CancelledWebPageId = WebPageId(0xFFFFFFFFFFFFFFFFULL);
 
 using PreparedPhotoThumbs = QMap<char, QImage>;

Telegram/SourceFiles/history/history_item.cpp

@@ -138,8 +138,8 @@ MediaCheckResult CheckMessageMedia(const MTPMessageMedia &media) {
 		});
 	}, [](const MTPDmessageMediaInvoice &) {
 		return Result::Good;
-	}, [](const MTPDmessageMediaPoll &) { // #TODO polls
+	}, [](const MTPDmessageMediaPoll &) {
-		return Result::Unsupported;
+		return Result::Good;
 	}, [](const MTPDmessageMediaUnsupported &) {
 		return Result::Unsupported;
 	});

Telegram/SourceFiles/history/history_message.cpp

@@ -855,8 +855,10 @@ std::unique_ptr<Data::Media> HistoryMessage::CreateMedia(
 		});
 	}, [&](const MTPDmessageMediaInvoice &media) -> Result {
 		return std::make_unique<Data::MediaInvoice>(item, media);
-	}, [&](const MTPDmessageMediaPoll &media) -> Result { // #TODO polls
+	}, [&](const MTPDmessageMediaPoll &media) -> Result {
-		return nullptr;
+		return std::make_unique<Data::MediaPoll>(
+			item,
+			Auth().data().poll(media));
 	}, [](const MTPDmessageMediaEmpty &) -> Result {
 		return nullptr;
 	}, [](const MTPDmessageMediaUnsupported &) -> Result {

Telegram/SourceFiles/history/history_widget.cpp

@@ -5928,7 +5928,7 @@ void HistoryWidget::gotPreview(QString links, const MTPMessageMedia &result, mtp
 				: nullptr;
 			updatePreview();
 		}
-		Auth().data().sendWebPageGameNotifications();
+		Auth().data().sendWebPageGamePollNotifications();
 	} else if (result.type() == mtpc_messageMediaEmpty) {
 		_previewCache.insert(links, 0);
 		if (links == _previewLinks && !_previewCancelled) {

Telegram/SourceFiles/mainwidget.cpp

@@ -4246,7 +4246,7 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 		// Update web page anyway.
 		Auth().data().webpage(d.vwebpage);
 		_history->updatePreview();
-		Auth().data().sendWebPageGameNotifications();
+		Auth().data().sendWebPageGamePollNotifications();
 
 		ptsUpdateAndApply(d.vpts.v, d.vpts_count.v, update);
 	} break;
@@ -4257,7 +4257,7 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 		// Update web page anyway.
 		Auth().data().webpage(d.vwebpage);
 		_history->updatePreview();
-		Auth().data().sendWebPageGameNotifications();
+		Auth().data().sendWebPageGamePollNotifications();
 
 		auto channel = App::channelLoaded(d.vchannel_id.v);
 		if (channel && !_handlingChannelDifference) {
@@ -4271,6 +4271,10 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 		}
 	} break;
 
+	case mtpc_updateMessagePoll: {
+		Auth().data().applyPollUpdate(update.c_updateMessagePoll());
+	} break;
+
 	case mtpc_updateUserTyping: {
 		auto &d = update.c_updateUserTyping();
 		const auto userId = peerFromUser(d.vuser_id);

Telegram/gyp/telegram_sources.txt

@@ -166,6 +166,8 @@
 <(src_loc)/data/data_peer_values.h
 <(src_loc)/data/data_photo.cpp
 <(src_loc)/data/data_photo.h
+<(src_loc)/data/data_poll.cpp
+<(src_loc)/data/data_poll.h
 <(src_loc)/data/data_search_controller.cpp
 <(src_loc)/data/data_search_controller.h
 <(src_loc)/data/data_session.cpp