[poll-create] Added poll option toggle to disable revoting.

Telegram/Resources/langs/lang.strings

@@ -6855,6 +6855,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_polls_create_show_who_voted_about" = "Display voter name on each option.";
 "lng_polls_create_allow_multiple_answers" = "Allow Multiple Answers";
 "lng_polls_create_allow_multiple_answers_about" = "Voters can select more than one option.";
+"lng_polls_create_allow_revoting" = "Allow Revoting";
+"lng_polls_create_allow_revoting_about" = "Voters can change their vote.";
 "lng_polls_create_shuffle_options" = "Shuffle Options";
 "lng_polls_create_shuffle_options_about" = "Answers appear in random order for each voter.";
 "lng_polls_create_set_correct_answer" = "Set Correct Answer";

Telegram/SourceFiles/boxes/create_poll_box.cpp

@@ -1108,6 +1108,16 @@ object_ptr<Ui::RpWidget> CreatePollBox::setupContent() {
 				| rpl::then(state->multipleForceOff.events()),
 			st::detailedSettingsButtonStyle)
 		: nullptr;
+	const auto revoting = AddPollToggleButton(
+		container,
+		tr::lng_polls_create_allow_revoting(),
+		tr::lng_polls_create_allow_revoting_about(),
+		{
+			.icon = &st::pollBoxFilledPollRevoteIcon,
+			.background = &st::settingsIconBg6,
+		},
+		rpl::single(!(_chosen & PollData::Flag::RevotingDisabled)),
+		st::detailedSettingsButtonStyle);
 	const auto shuffle = AddPollToggleButton(
 		container,
 		tr::lng_polls_create_shuffle_options(),
@@ -1150,6 +1160,7 @@ object_ptr<Ui::RpWidget> CreatePollBox::setupContent() {
 	}, solution->lifetime());
 
 	quiz->setToggleLocked(_disabled & PollData::Flag::Quiz);
+	revoting->setToggleLocked(_disabled & PollData::Flag::RevotingDisabled);
 	shuffle->setToggleLocked(_disabled & PollData::Flag::ShuffleAnswers);
 	if (multiple) {
 		multiple->setToggleLocked((_disabled & PollData::Flag::MultiChoice)
@@ -1224,6 +1235,7 @@ object_ptr<Ui::RpWidget> CreatePollBox::setupContent() {
 		result.setFlags(Flag(0)
 			| (publicVotes ? Flag::PublicVotes : Flag(0))
 			| (multiChoice ? Flag::MultiChoice : Flag(0))
+			| (!revoting->toggled() ? Flag::RevotingDisabled : Flag(0))
 			| (shuffle->toggled() ? Flag::ShuffleAnswers : Flag(0))
 			| (quiz->toggled() ? Flag::Quiz : Flag(0)));
 		return result;

Telegram/SourceFiles/data/data_poll.cpp

@@ -77,7 +77,8 @@ bool PollData::applyChanges(const MTPDpoll &poll) {
 		| (poll.is_public_voters() ? Flag::PublicVotes : Flag(0))
 		| (poll.is_multiple_choice() ? Flag::MultiChoice : Flag(0))
 		| (poll.is_quiz() ? Flag::Quiz : Flag(0))
-		| (poll.is_shuffle_answers() ? Flag::ShuffleAnswers : Flag(0));
+		| (poll.is_shuffle_answers() ? Flag::ShuffleAnswers : Flag(0))
+		| (poll.is_revoting_disabled() ? Flag::RevotingDisabled : Flag(0));
 	const auto newCloseDate = poll.vclose_date().value_or_empty();
 	const auto newClosePeriod = poll.vclose_period().value_or_empty();
 	auto newAnswers = ranges::views::all(
@@ -265,6 +266,10 @@ bool PollData::shuffleAnswers() const {
 	return (_flags & Flag::ShuffleAnswers);
 }
 
+bool PollData::revotingDisabled() const {
+	return (_flags & Flag::RevotingDisabled);
+}
+
 MTPPoll PollDataToMTP(not_null<const PollData*> poll, bool close) {
 	const auto convert = [&](const PollAnswer &answer) {
 		return MTP_pollAnswer(
@@ -289,6 +294,7 @@ MTPPoll PollDataToMTP(not_null<const PollData*> poll, bool close) {
 		| (poll->publicVotes() ? Flag::f_public_voters : Flag(0))
 		| (poll->quiz() ? Flag::f_quiz : Flag(0))
 		| (poll->shuffleAnswers() ? Flag::f_shuffle_answers : Flag(0))
+		| (poll->revotingDisabled() ? Flag::f_revoting_disabled : Flag(0))
 		| (poll->closePeriod > 0 ? Flag::f_close_period : Flag(0))
 		| (poll->closeDate > 0 ? Flag::f_close_date : Flag(0));
 	return MTP_poll(

Telegram/SourceFiles/data/data_poll.h

@@ -39,11 +39,12 @@ struct PollData {
 	[[nodiscard]] Main::Session &session() const;
 
 	enum class Flag {
-		Closed         = 0x01,
-		PublicVotes    = 0x02,
-		MultiChoice    = 0x04,
-		Quiz           = 0x08,
-		ShuffleAnswers = 0x10,
+		Closed           = 0x01,
+		PublicVotes      = 0x02,
+		MultiChoice      = 0x04,
+		Quiz             = 0x08,
+		ShuffleAnswers   = 0x10,
+		RevotingDisabled = 0x20,
 	};
 	friend inline constexpr bool is_flag_type(Flag) { return true; };
 	using Flags = base::flags<Flag>;
@@ -65,6 +66,7 @@ struct PollData {
 	[[nodiscard]] bool multiChoice() const;
 	[[nodiscard]] bool quiz() const;
 	[[nodiscard]] bool shuffleAnswers() const;
+	[[nodiscard]] bool revotingDisabled() const;
 
 	PollId id = 0;
 	TextWithEntities question;

Telegram/SourceFiles/history/view/history_view_context_menu.cpp

@@ -1519,7 +1519,7 @@ void AddPollActions(
 		return;
 	}
 	const auto itemId = item->fullId();
-	if (poll->voted() && !poll->quiz()) {
+	if (poll->voted() && !poll->quiz() && !poll->revotingDisabled()) {
 		menu->addAction(tr::lng_polls_retract(tr::now), [=] {
 			poll->session().api().polls().sendVotes(itemId, {});
 		}, &st::menuIconRetractVote);