Add create poll box from groups three-dot menu.

Telegram/Resources/langs/lang.strings

@@ -1836,6 +1836,16 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_polls_stop" = "Stop poll";
 "lng_polls_stop_warning" = "If you stop this poll now, nobody will be able to vote in it anymore. This action cannot be undone.";
 "lng_polls_stop_sure" = "Stop";
+"lng_polls_create" = "Create poll";
+"lng_polls_create_title" = "New poll";
+"lng_polls_create_question" = "Question";
+"lng_polls_create_question_placeholder" = "Ask a question";
+"lng_polls_create_options" = "Poll options";
+"lng_polls_create_option_add" = "Add an option...";
+"lng_polls_create_limit#one" = "You can add {count} more option.";
+"lng_polls_create_limit#other" = "You can add {count} more options.";
+"lng_polls_create_maximum" = "You have added the maximum number of options.";
+"lng_polls_create_button" = "Create";
 
 // Wnd specific
 

Telegram/SourceFiles/apiwrap.cpp

@@ -4752,36 +4752,6 @@ void ApiWrap::sendExistingDocument(
 	};
 	performRequest();
 
-	AssertIsDebug();
-	auto answers = QVector<MTPPollAnswer>{
-		MTP_pollAnswer(MTP_string("first option"), MTP_bytes("a")),
-		MTP_pollAnswer(MTP_string("second option"), MTP_bytes("b")),
-		MTP_pollAnswer(MTP_string("third very very very very very very "
-		"very very very very very very option"), MTP_bytes("c")),
-		MTP_pollAnswer(MTP_string("fourth option"), MTP_bytes("d")),
-	};
-	history->sendRequestId = request(MTPmessages_SendMedia(
-		MTP_flags(sendFlags),
-		peer->input,
-		MTP_int(replyTo),
-		MTP_inputMediaPoll(
-			MTP_poll(
-				MTP_long(rand_value<uint64>()),
-				MTP_flags(0),
-				MTP_string("Very very very very very very very very very very "
-				"very very very long poll question text"),
-				MTP_vector<MTPPollAnswer>(answers))),
-		MTP_string(captionText),
-		MTP_long(rand_value<uint64>()),
-		MTPnullMarkup,
-		sentEntities
-	)).done([=](const MTPUpdates &result) {
-		applyUpdates(result);
-	}).fail(
-		base::duplicate(*failHandler)
-	).afterRequest(history->sendRequestId
-	).send();
-
 	if (const auto main = App::main()) {
 		main->finishForwarding(history);
 		if (document->sticker()) {
@@ -5344,6 +5314,45 @@ void ApiWrap::setSelfDestructDays(int days) {
 	_selfDestructChanges.fire_copy(days);
 }
 
+void ApiWrap::createPoll(
+		const PollData &data,
+		const SendOptions &options,
+		FnMut<void()> done,
+		FnMut<void(const RPCError &error)> fail) {
+	sendAction(options);
+
+	const auto history = options.history;
+	const auto peer = history->peer;
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (options.replyTo) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to_msg_id;
+	}
+	const auto channelPost = peer->isChannel() && !peer->isMegagroup();
+	const auto silentPost = channelPost
+		&& _session->data().notifySilentPosts(peer);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+
+	const auto replyTo = options.replyTo;
+	history->sendRequestId = request(MTPmessages_SendMedia(
+		MTP_flags(sendFlags),
+		peer->input,
+		MTP_int(replyTo),
+		MTP_inputMediaPoll(PollDataToMTP(&data)),
+		MTP_string(QString()),
+		MTP_long(rand_value<uint64>()),
+		MTPReplyMarkup(),
+		MTPVector<MTPMessageEntity>()
+	)).done([=, done = std::move(done)](const MTPUpdates &result) mutable {
+		applyUpdates(result);
+		done();
+	}).fail([=, fail = std::move(fail)](const RPCError &error) mutable {
+		fail(error);
+	}).afterRequest(history->sendRequestId
+	).send();
+}
+
 void ApiWrap::sendPollVotes(
 		FullMsgId itemId,
 		const std::vector<QByteArray> &options) {
@@ -5385,29 +5394,12 @@ void ApiWrap::closePoll(FullMsgId itemId) {
 		return;
 	}
 
-	const auto convert = [](const PollAnswer &answer) {
-		return MTP_pollAnswer(
-			MTP_string(answer.text),
-			MTP_bytes(answer.option));
-	};
-
-	auto answers = QVector<MTPPollAnswer>();
-	answers.reserve(poll->answers.size());
-	ranges::transform(
-		poll->answers,
-		ranges::back_inserter(answers),
-		convert);
-
 	const auto requestId = request(MTPmessages_EditMessage(
 		MTP_flags(MTPmessages_EditMessage::Flag::f_media),
 		item->history()->peer->input,
 		MTP_int(item->id),
 		MTPstring(),
-		MTP_inputMediaPoll(MTP_poll(
+		MTP_inputMediaPoll(PollDataToMTP(poll)),
-			MTP_long(poll->id),
-			MTP_flags(MTPDpoll::Flag::f_closed),
-			MTP_string(poll->question),
-			MTP_vector<MTPPollAnswer>(answers))),
 		MTPReplyMarkup(),
 		MTPVector<MTPMessageEntity>()
 	)).done([=](const MTPUpdates &result) {

Telegram/SourceFiles/apiwrap.h

@@ -377,6 +377,11 @@ public:
 	rpl::producer<int> selfDestructValue() const;
 	void saveSelfDestruct(int days);
 
+	void createPoll(
+		const PollData &data,
+		const SendOptions &options,
+		FnMut<void()> done,
+		FnMut<void(const RPCError &error)> fail);
 	void sendPollVotes(
 		FullMsgId itemId,
 		const std::vector<QByteArray> &options);

Telegram/SourceFiles/application.cpp

@@ -408,7 +408,9 @@ bool Application::notify(QObject *receiver, QEvent *e) {
 		_loopNestingLevel = _previousLoopNestingLevels.back();
 		_previousLoopNestingLevels.pop_back();
 	}
-	processPostponedCalls(--_eventNestingLevel);
+	const auto processTillLevel = _eventNestingLevel - 1;
+	processPostponedCalls(processTillLevel);
+	_eventNestingLevel = processTillLevel;
 	return result;
 }
 

Telegram/SourceFiles/boxes/boxes.style

@@ -834,3 +834,53 @@ themesScroll: ScrollArea(defaultScrollArea) {
 	bottomsh: 0px;
 	topsh: 0px;
 }
+
+createPollField: InputField(defaultInputField) {
+	font: boxTextFont;
+	textMargins: margins(0px, 0px, 0px, 0px);
+	textAlign: align(left);
+	heightMin: 36px;
+	heightMax: 86px;
+	placeholderFg: placeholderFg;
+	placeholderFgActive: placeholderFgActive;
+	placeholderFgError: placeholderFgActive;
+	placeholderMargins: margins(2px, 0px, 2px, 0px);
+	placeholderAlign: align(topleft);
+	placeholderScale: 0.;
+	placeholderFont: boxTextFont;
+	placeholderShift: -50px;
+	border: 0px;
+	borderActive: 0px;
+	duration: 100;
+}
+createPollFieldPadding: margins(22px, 5px, 22px, 5px);
+createPollOptionField: InputField(createPollField) {
+	textMargins: margins(22px, 8px, 40px, 8px);
+	placeholderMargins: margins(2px, 0px, 2px, 0px);
+	heightMax: 64px;
+}
+createPollLimitLabel: FlatLabel(defaultFlatLabel) {
+	minWidth: 274px;
+	align: align(topleft);
+}
+createPollOptionRemove: CrossButton {
+	width: 22px;
+	height: 22px;
+
+	cross: CrossAnimation {
+		size: 22px;
+		skip: 6px;
+		stroke: 1px;
+		minScale: 0.3;
+	}
+	crossFg: boxTitleCloseFg;
+	crossFgOver: boxTitleCloseFgOver;
+	crossPosition: point(0px, 0px);
+
+	duration: 150;
+	loadingPeriod: 1000;
+	ripple: RippleAnimation(defaultRippleAnimation) {
+		color: windowBgOver;
+	}
+}
+createPollOptionRemovePosition: point(10px, 7px);

Telegram/SourceFiles/boxes/create_poll_box.cpp

@@ -0,0 +1,546 @@
+/*
+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 "boxes/create_poll_box.h"
+
+#include "lang/lang_keys.h"
+#include "data/data_poll.h"
+#include "ui/toast/toast.h"
+#include "ui/wrap/vertical_layout.h"
+#include "ui/widgets/input_fields.h"
+#include "ui/widgets/shadow.h"
+#include "ui/widgets/labels.h"
+#include "ui/widgets/buttons.h"
+#include "chat_helpers/emoji_suggestions_widget.h"
+#include "settings/settings_common.h"
+#include "base/unique_qptr.h"
+#include "styles/style_boxes.h"
+
+namespace {
+
+constexpr auto kQuestionLimit = 255;
+constexpr auto kMaxOptionsCount = 10;
+constexpr auto kOptionLimit = 100;
+constexpr auto kWarnQuestionLimit = 80;
+constexpr auto kWarnOptionLimit = 30;
+
+class Options {
+public:
+	Options(
+		not_null<QWidget*> outer,
+		not_null<Ui::VerticalLayout*> container);
+
+	[[nodiscard]] bool isValid() const;
+	[[nodiscard]] rpl::producer<bool> isValidChanged() const;
+	[[nodiscard]] std::vector<PollAnswer> toPollAnswers() const;
+	void focusFirst();
+
+	[[nodiscard]] rpl::producer<int> usedCount() const;
+	[[nodiscard]] rpl::producer<not_null<QWidget*>> scrollToWidget() const;
+
+private:
+	class Option {
+	public:
+		static Option Create(
+			not_null<QWidget*> outer,
+			not_null<Ui::VerticalLayout*> container,
+			int position);
+
+		[[nodisacrd]] bool hasShadow() const;
+		void createShadow();
+		//void destroyShadow();
+
+		void createRemove();
+		void toggleRemoveAlways(bool toggled);
+
+		[[nodiscard]] bool isEmpty() const;
+		[[nodiscard]] bool isGood() const;
+		[[nodiscard]] bool hasFocus() const;
+		void setFocus() const;
+		void clearValue();
+
+		void setPlaceholder() const;
+		void removePlaceholder() const;
+
+		not_null<Ui::InputField*> field() const;
+
+		[[nodiscard]] PollAnswer toPollAnswer(char id) const;
+
+		[[nodiscard]] rpl::producer<Qt::MouseButton> removeClicks() const;
+
+	private:
+		Option() = default;
+
+		base::unique_qptr<Ui::InputField> _field;
+		base::unique_qptr<Ui::PlainShadow> _shadow;
+		base::unique_qptr<Ui::CrossButton> _remove;
+		rpl::variable<bool> *_removeAlways = nullptr;
+
+	};
+
+	[[nodiscard]] bool full() const;
+	//[[nodiscard]] bool correctShadows() const;
+	//void fixShadows();
+	void removeEmptyTail();
+	void addEmptyOption();
+	void checkLastOption();
+	void validateState();
+	void fixAfterErase();
+	int findField(not_null<Ui::InputField*> field) const;
+
+	not_null<QWidget*> _outer;
+	not_null<Ui::VerticalLayout*> _container;
+	int _position = 0;
+	std::vector<Option> _list;
+	rpl::variable<bool> _valid = false;
+	rpl::variable<int> _usedCount = 0;
+	rpl::event_stream<not_null<QWidget*>> _scrollToWidget;
+
+};
+
+void InitField(
+		not_null<QWidget*> container,
+		not_null<Ui::InputField*> field) {
+	field->setInstantReplaces(Ui::InstantReplaces::Default());
+	field->setInstantReplacesEnabled(Global::ReplaceEmojiValue());
+	Ui::Emoji::SuggestionsController::Init(container, field);
+}
+
+Options::Option Options::Option::Create(
+		not_null<QWidget*> outer,
+		not_null<Ui::VerticalLayout*> container,
+		int position) {
+	auto result = Option();
+	const auto field = container->insert(
+		position,
+		object_ptr<Ui::InputField>(
+			container,
+			st::createPollOptionField,
+			Ui::InputField::Mode::MultiLine,
+			langFactory(lng_polls_create_option_add)));
+	InitField(outer, field);
+	result._field.reset(field);
+
+	result.createShadow();
+	result.createRemove();
+	return result;
+}
+
+bool Options::Option::hasShadow() const {
+	return (_shadow != nullptr);
+}
+
+void Options::Option::createShadow() {
+	Expects(_field != nullptr);
+
+	if (_shadow) {
+		return;
+	}
+	const auto value = Ui::CreateChild<Ui::PlainShadow>(_field.get());
+	value->show();
+	_field->sizeValue(
+	) | rpl::start_with_next([=](QSize size) {
+		const auto left = st::createPollFieldPadding.left();
+		value->setGeometry(
+			left,
+			size.height() - st::lineWidth,
+			size.width() - left,
+			st::lineWidth);
+	}, value->lifetime());
+	_shadow.reset(value);
+}
+
+//void Options::Option::destroyShadow() {
+//	_shadow = nullptr;
+//}
+
+void Options::Option::createRemove() {
+	using namespace rpl::mappers;
+
+	const auto field = _field.get();
+	auto &lifetime = field->lifetime();
+
+	const auto remove = Ui::CreateChild<Ui::CrossButton>(
+		field,
+		st::createPollOptionRemove);
+	remove->hide(anim::type::instant);
+
+	const auto toggle = lifetime.make_state<rpl::variable<bool>>(false);
+	_removeAlways = lifetime.make_state<rpl::variable<bool>>(false);
+
+	QObject::connect(field, &Ui::InputField::changed, [=] {
+		// Don't capture 'this'! Because Option is a value type.
+		*toggle = !field->getLastText().isEmpty();
+	});
+	rpl::combine(
+		toggle->value(),
+		_removeAlways->value(),
+		_1 || _2
+	) | rpl::start_with_next([=](bool shown) {
+		remove->toggle(shown, anim::type::normal);
+	}, remove->lifetime());
+
+	field->widthValue(
+	) | rpl::start_with_next([=](int width) {
+		remove->moveToRight(
+			st::createPollOptionRemovePosition.x(),
+			st::createPollOptionRemovePosition.y(),
+			width);
+	}, remove->lifetime());
+
+	_remove.reset(remove);
+}
+
+bool Options::Option::isEmpty() const {
+	return _field->getLastText().trimmed().isEmpty();
+}
+
+bool Options::Option::isGood() const {
+	const auto text = _field->getLastText().trimmed();
+	return !text.isEmpty() && (text.size() <= kOptionLimit);
+}
+
+bool Options::Option::hasFocus() const {
+	return _field->hasFocus();
+}
+
+void Options::Option::setFocus() const {
+	_field->setFocus();
+}
+
+void Options::Option::clearValue() {
+	_field->setText(QString());
+}
+
+void Options::Option::setPlaceholder() const {
+	_field->setPlaceholder(langFactory(lng_polls_create_option_add));
+}
+
+void Options::Option::toggleRemoveAlways(bool toggled) {
+	*_removeAlways = toggled;
+}
+
+not_null<Ui::InputField*> Options::Option::field() const {
+	return _field.get();
+}
+
+void Options::Option::removePlaceholder() const {
+	_field->setPlaceholder(nullptr);
+}
+
+PollAnswer Options::Option::toPollAnswer(char id) const {
+	return PollAnswer{
+		_field->getLastText().trimmed(),
+		QByteArray(1, id)
+	};
+}
+
+rpl::producer<Qt::MouseButton> Options::Option::removeClicks() const {
+	return _remove->clicks();
+}
+
+Options::Options(
+	not_null<QWidget*> outer,
+	not_null<Ui::VerticalLayout*> container)
+: _outer(outer)
+, _container(container)
+, _position(_container->count()) {
+	checkLastOption();
+}
+
+bool Options::full() const {
+	return (_list.size() == kMaxOptionsCount);
+}
+
+bool Options::isValid() const {
+	return _valid.current();
+}
+
+rpl::producer<bool> Options::isValidChanged() const {
+	return _valid.changes();
+}
+
+rpl::producer<int> Options::usedCount() const {
+	return _usedCount.value();
+}
+
+rpl::producer<not_null<QWidget*>> Options::scrollToWidget() const {
+	return _scrollToWidget.events();
+}
+
+std::vector<PollAnswer> Options::toPollAnswers() const {
+	auto result = std::vector<PollAnswer>();
+	result.reserve(_list.size());
+	auto counter = char(0);
+	const auto makeAnswer = [&](const Option &option) {
+		return option.toPollAnswer(++counter);
+	};
+	ranges::copy(
+		_list
+		| ranges::view::filter(&Option::isGood)
+		| ranges::view::transform(makeAnswer),
+		ranges::back_inserter(result));
+	return result;
+}
+
+void Options::focusFirst() {
+	Expects(!_list.empty());
+
+	_list.front().setFocus();
+}
+//
+//bool Options::correctShadows() const {
+//	// Last one should be without shadow if all options were used.
+//	const auto noShadow = ranges::find(
+//		_list,
+//		true,
+//		ranges::not_fn(&Option::hasShadow));
+//	return (noShadow == end(_list) - (full() ? 1 : 0));
+//}
+//
+//void Options::fixShadows() {
+//	if (correctShadows()) {
+//		return;
+//	}
+//	for (auto &option : _list) {
+//		option.createShadow();
+//	}
+//	if (full()) {
+//		_list.back().destroyShadow();
+//	}
+//}
+
+void Options::removeEmptyTail() {
+	// Only one option at the end of options list can be empty.
+	// Remove all other trailing empty options.
+	// Only last empty and previous option have non-empty placeholders.
+	const auto focused = ranges::find_if(
+		_list,
+		&Option::hasFocus);
+	const auto end = _list.end();
+	auto reversed = ranges::view::reverse(_list);
+	const auto emptyItem = ranges::find_if(
+		reversed,
+		ranges::not_fn(&Option::isEmpty)).base();
+	const auto focusLast = (focused > emptyItem) && (focused < end);
+	if (emptyItem == end) {
+		return;
+	}
+	if (focusLast) {
+		emptyItem->setFocus();
+	}
+	_list.erase(emptyItem + 1, end);
+	fixAfterErase();
+}
+
+void Options::fixAfterErase() {
+	Expects(!_list.empty());
+
+	const auto last = _list.end() - 1;
+	last->setPlaceholder();
+	last->toggleRemoveAlways(false);
+	if (last != begin(_list)) {
+		(last - 1)->setPlaceholder();
+		(last - 1)->toggleRemoveAlways(false);
+	}
+}
+
+void Options::addEmptyOption() {
+	if (full()) {
+		return;
+	} else if (!_list.empty() && _list.back().isEmpty()) {
+		return;
+	}
+	if (_list.size() > 1) {
+		(_list.end() - 2)->removePlaceholder();
+		(_list.end() - 2)->toggleRemoveAlways(true);
+	}
+	_list.push_back(Option::Create(
+		_outer,
+		_container,
+		_position + _list.size()));
+	const auto field = _list.back().field();
+	QObject::connect(field, &Ui::InputField::submitted, [=] {
+		const auto index = findField(field);
+		if (_list[index].isGood() && index + 1 < _list.size()) {
+			_list[index + 1].setFocus();
+		}
+	});
+	QObject::connect(field, &Ui::InputField::changed, [=] {
+		Ui::PostponeCall(crl::guard(field, [=] {
+			validateState();
+		}));
+	});
+	QObject::connect(field, &Ui::InputField::focused, [=] {
+		_scrollToWidget.fire_copy(field);
+	});
+
+	_list.back().removeClicks(
+	) | rpl::start_with_next([=] {
+		Ui::PostponeCall(crl::guard(field, [=] {
+			Expects(!_list.empty());
+
+			const auto item = begin(_list) + findField(field);
+			if (item == _list.end() - 1) {
+				item->clearValue();
+				return;
+			}
+			if (item->hasFocus()) {
+				(item + 1)->setFocus();
+			}
+			_list.erase(item);
+			fixAfterErase();
+			validateState();
+		}));
+	}, field->lifetime());
+
+	//fixShadows();
+}
+
+void Options::validateState() {
+	checkLastOption();
+	_valid = (ranges::count_if(_list, &Option::isGood) > 1);
+	const auto lastEmpty = !_list.empty() && _list.back().isEmpty();
+	_usedCount = _list.size() - (lastEmpty ? 1 : 0);
+}
+
+int Options::findField(not_null<Ui::InputField*> field) const {
+	const auto result = ranges::find(
+		_list,
+		field,
+		&Option::field) - begin(_list);
+
+	Ensures(result >= 0 && result < _list.size());
+
+	return result;
+}
+
+void Options::checkLastOption() {
+	removeEmptyTail();
+	addEmptyOption();
+}
+
+} // namespace
+
+CreatePollBox::CreatePollBox(QWidget*) {
+}
+
+rpl::producer<PollData> CreatePollBox::submitRequests() const {
+	return _submitRequests.events();
+}
+
+void CreatePollBox::setInnerFocus() {
+	_setInnerFocus();
+}
+
+void CreatePollBox::submitFailed(const QString &error) {
+	Ui::Toast::Show(error);
+}
+
+not_null<Ui::InputField*> CreatePollBox::setupQuestion(
+		not_null<Ui::VerticalLayout*> container) {
+	using namespace Settings;
+
+	AddSubsectionTitle(container, lng_polls_create_question);
+	const auto question = container->add(
+		object_ptr<Ui::InputField>(
+			container,
+			st::createPollField,
+			Ui::InputField::Mode::MultiLine,
+			langFactory(lng_polls_create_question_placeholder)),
+		st::createPollFieldPadding);
+	InitField(getDelegate()->outerContainer(), question);
+
+	return question;
+}
+
+object_ptr<Ui::RpWidget> CreatePollBox::setupContent() {
+	using namespace Settings;
+
+	const auto id = rand_value<uint64>();
+	const auto valid = lifetime().make_state<rpl::event_stream<bool>>();
+
+	auto result = object_ptr<Ui::VerticalLayout>(this);
+	const auto container = result.data();
+
+	const auto question = setupQuestion(container);
+	AddDivider(container);
+	AddSkip(container);
+	AddSubsectionTitle(container, lng_polls_create_options);
+	const auto options = lifetime().make_state<Options>(
+		getDelegate()->outerContainer(),
+		container);
+	auto limit = options->usedCount() | rpl::map([=](int count) {
+		return (count < kMaxOptionsCount)
+			? lng_polls_create_limit(lt_count, kMaxOptionsCount - count)
+			: lang(lng_polls_create_maximum);
+	}) | rpl::after_next([=] {
+		container->resizeToWidth(container->widthNoMargins());
+	});
+	container->add(
+		object_ptr<Ui::FlatLabel>(
+			container,
+			std::move(limit),
+			st::createPollLimitLabel),
+		st::createPollFieldPadding);
+
+	const auto isValidQuestion = [=] {
+		const auto text = question->getLastText().trimmed();
+		return !text.isEmpty() && (text.size() <= kQuestionLimit);
+	};
+
+	connect(question, &Ui::InputField::submitted, [=] {
+		if (isValidQuestion()) {
+			options->focusFirst();
+		}
+	});
+
+	_setInnerFocus = [=] {
+		question->setFocusFast();
+	};
+
+	const auto collectResult = [=] {
+		auto result = PollData(id);
+		result.question = question->getLastText().trimmed();
+		result.answers = options->toPollAnswers();
+		return result;
+	};
+	const auto updateValid = [=] {
+		valid->fire(isValidQuestion() && options->isValid());
+	};
+	valid->events(
+	) | rpl::distinct_until_changed(
+	) | rpl::start_with_next([=](bool valid) {
+		clearButtons();
+		if (valid) {
+			addButton(
+				langFactory(lng_polls_create_button),
+				[=] { _submitRequests.fire(collectResult()); });
+		}
+		addButton(langFactory(lng_cancel), [=] { closeBox(); });
+	}, lifetime());
+
+	options->isValidChanged(
+	) | rpl::start_with_next([=] {
+		updateValid();
+	}, lifetime());
+
+	options->scrollToWidget(
+	) | rpl::start_with_next([=](not_null<QWidget*> widget) {
+		scrollToWidget(widget);
+	}, lifetime());
+
+	return std::move(result);
+}
+
+void CreatePollBox::prepare() {
+	setTitle(langFactory(lng_polls_create_title));
+
+	const auto inner = setInnerWidget(setupContent());
+
+	setDimensionsToContent(st::boxWideWidth, inner);
+}

Telegram/SourceFiles/boxes/create_poll_box.h

@@ -0,0 +1,39 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "boxes/abstract_box.h"
+
+namespace Ui {
+class VerticalLayout;
+} // namespace Ui
+
+struct PollData;
+
+class CreatePollBox : public BoxContent {
+public:
+	CreatePollBox(QWidget*);
+
+	rpl::producer<PollData> submitRequests() const;
+	void submitFailed(const QString &error);
+
+	void setInnerFocus() override;
+
+protected:
+	void prepare() override;
+
+private:
+	object_ptr<Ui::RpWidget> setupContent();
+	not_null<Ui::InputField*> setupQuestion(
+		not_null<Ui::VerticalLayout*> container);
+
+	Fn<void()> _setInnerFocus;
+	Fn<rpl::producer<bool>()> _dataIsValidValue;
+	rpl::event_stream<PollData> _submitRequests;
+
+};

Telegram/SourceFiles/data/data_poll.cpp

@@ -125,3 +125,22 @@ bool PollData::applyResultToAnswers(
 bool PollData::voted() const {
 	return ranges::find(answers, true, &PollAnswer::chosen) != end(answers);
 }
+
+MTPPoll PollDataToMTP(not_null<const PollData*> poll) {
+	const auto convert = [](const PollAnswer &answer) {
+		return MTP_pollAnswer(
+			MTP_string(answer.text),
+			MTP_bytes(answer.option));
+	};
+	auto answers = QVector<MTPPollAnswer>();
+	answers.reserve(poll->answers.size());
+	ranges::transform(
+		poll->answers,
+		ranges::back_inserter(answers),
+		convert);
+	return MTP_poll(
+		MTP_long(poll->id),
+		MTP_flags(MTPDpoll::Flag::f_closed),
+		MTP_string(poll->question),
+		MTP_vector<MTPPollAnswer>(answers));
+}

Telegram/SourceFiles/data/data_poll.h

@@ -48,3 +48,5 @@ private:
 		bool isMinResults);
 
 };
+
+MTPPoll PollDataToMTP(not_null<const PollData*> poll);

Telegram/SourceFiles/ui/twidget.cpp

@@ -234,8 +234,8 @@ void ForceFullRepaint(not_null<QWidget*> widget) {
 }
 
 void PostponeCall(FnMut<void()> &&callable) {
-	const auto app = static_cast<Application*>(qApp);
+	const auto application = static_cast<Application*>(qApp);
-	app->postponeCall(std::move(callable));
+	application->postponeCall(std::move(callable));
 }
 
 } // namespace Ui

Telegram/SourceFiles/ui/widgets/input_fields.cpp

@@ -2160,7 +2160,11 @@ void InputField::handleContentsChanged() {
 
 	if (tagsChanged || (_lastTextWithTags.text != currentText)) {
 		_lastTextWithTags.text = currentText;
+		const auto weak = make_weak(this);
 		emit changed();
+		if (!weak) {
+			return;
+		}
 		checkContentHeight();
 	}
 	startPlaceholderAnimation();

Telegram/SourceFiles/ui/wrap/vertical_layout.h

@@ -15,6 +15,10 @@ class VerticalLayout : public RpWidget {
 public:
 	using RpWidget::RpWidget;
 
+	int count() const {
+		return _rows.size();
+	}
+
 	template <
 		typename Widget,
 		typename = std::enable_if_t<
@@ -36,7 +40,7 @@ public:
 	Widget *add(
 			object_ptr<Widget> &&child,
 			const style::margins &margin = style::margins()) {
-		return insert(_rows.size(), std::move(child), margin);
+		return insert(count(), std::move(child), margin);
 	}
 
 	QMargins getMargins() const override;

Telegram/SourceFiles/window/window_peer_menu.cpp

@@ -12,6 +12,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/mute_settings_box.h"
 #include "boxes/add_contact_box.h"
 #include "boxes/report_box.h"
+#include "boxes/create_poll_box.h"
 #include "boxes/peer_list_controllers.h"
 #include "boxes/peers/manage_peer_box.h"
 #include "boxes/peers/edit_peer_info_box.h"
@@ -360,6 +361,11 @@ void Filler::addChatActions(not_null<ChatData*> chat) {
 				lang(lng_profile_add_participant),
 				[chat] { AddChatMembers(chat); });
 		}
+		if (chat->canWrite()) {
+			_addAction(
+				lang(lng_polls_create),
+				[=] { PeerMenuCreatePoll(chat); });
+		}
 		_addAction(
 			lang(lng_profile_export_chat),
 			[=] { PeerMenuExportChat(chat); });
@@ -397,6 +403,11 @@ void Filler::addChannelActions(not_null<ChannelData*> channel) {
 				lang(lng_channel_add_members),
 				[channel] { PeerMenuAddChannelMembers(channel); });
 		}
+		if (channel->canWrite()) {
+			_addAction(
+				lang(lng_polls_create),
+				[=] { PeerMenuCreatePoll(channel); });
+		}
 		_addAction(
 			lang(isGroup
 				? lng_profile_export_chat
@@ -615,6 +626,19 @@ void PeerMenuShareContactBox(not_null<UserData*> user) {
 		}));
 }
 
+void PeerMenuCreatePoll(not_null<PeerData*> peer) {
+	const auto box = Ui::show(Box<CreatePollBox>());
+	box->submitRequests(
+	) | rpl::start_with_next([=](const PollData &result) {
+		const auto options = ApiWrap::SendOptions(App::history(peer));
+		Auth().api().createPoll(result, options, crl::guard(box, [=] {
+			box->closeBox();
+		}), crl::guard(box, [=](const RPCError &error) {
+			box->submitFailed(lang(lng_attach_failed));
+		}));
+	}, box->lifetime());
+}
+
 QPointer<Ui::RpWidget> ShowForwardMessagesBox(
 		MessageIdsList &&items,
 		FnMut<void()> &&successCallback) {

Telegram/SourceFiles/window/window_peer_menu.h

@@ -50,6 +50,7 @@ void PeerMenuShareContactBox(not_null<UserData*> user);
 void PeerMenuAddContact(not_null<UserData*> user);
 void PeerMenuAddChannelMembers(not_null<ChannelData*> channel);
 //void PeerMenuUngroupFeed(not_null<Data::Feed*> feed); // #feed
+void PeerMenuCreatePoll(not_null<PeerData*> peer);
 
 //void ToggleChannelGrouping(not_null<ChannelData*> channel, bool group); // #feed
 Fn<void()> ClearHistoryHandler(not_null<PeerData*> peer);

Telegram/gyp/telegram_sources.txt

@@ -22,6 +22,8 @@
 <(src_loc)/boxes/confirm_phone_box.h
 <(src_loc)/boxes/connection_box.cpp
 <(src_loc)/boxes/connection_box.h
+<(src_loc)/boxes/create_poll_box.cpp
+<(src_loc)/boxes/create_poll_box.h
 <(src_loc)/boxes/download_path_box.cpp
 <(src_loc)/boxes/download_path_box.h
 <(src_loc)/boxes/edit_caption_box.cpp