Use not type-erased producers in code.

Telegram/SourceFiles/apiwrap.h

@@ -136,7 +136,7 @@ public:
 	void stickerSetInstalled(uint64 setId) {
 		_stickerSetInstalled.fire_copy(setId);
 	}
-	rpl::producer<uint64> stickerSetInstalled() const {
+	auto stickerSetInstalled() const {
 		return _stickerSetInstalled.events();
 	}
 

Telegram/SourceFiles/auth_session.h

@@ -106,7 +106,7 @@ public:
 		return _variables.thirdSectionInfoEnabled;
 	}
 	void setThirdSectionInfoEnabled(bool enabled);
-	rpl::producer<bool> thirdSectionInfoEnabledValue() const {
+	auto thirdSectionInfoEnabledValue() const {
 		return _thirdSectionInfoEnabledValue.events_starting_with(
 			thirdSectionInfoEnabled());
 	}
@@ -114,7 +114,7 @@ public:
 		return _tabbedReplacedWithInfo;
 	}
 	void setTabbedReplacedWithInfo(bool enabled);
-	rpl::producer<bool> tabbedReplacedWithInfoValue() const {
+	auto tabbedReplacedWithInfoValue() const {
 		return _tabbedReplacedWithInfoValue.events_starting_with(
 			tabbedReplacedWithInfo());
 	}

Telegram/SourceFiles/base/observer.h

@@ -464,9 +464,9 @@ void HandleObservables();
 template <
 	typename Type,
 	typename = std::enable_if_t<!std::is_same_v<Type, void>>>
-inline rpl::producer<Type> ObservableViewer(
-		base::Observable<Type> &observable) {
-	return [&observable](const rpl::consumer<Type> &consumer) {
+inline auto ObservableViewer(base::Observable<Type> &observable) {
+	return rpl::make_producer<Type>([&observable](
+			const rpl::consumer<Type> &consumer) {
 		auto lifetime = rpl::lifetime();
 		lifetime.make_state<base::Subscription>(
 			observable.add_subscription([consumer](auto &&update) {
@@ -474,19 +474,19 @@ inline rpl::producer<Type> ObservableViewer(
 					std::forward<decltype(update)>(update));
 			}));
 		return lifetime;
-	};
+	});
 }
 
-inline rpl::producer<> ObservableViewer(
-		base::Observable<void> &observable) {
-	return [&observable](const rpl::consumer<> &consumer) {
+inline auto ObservableViewer(base::Observable<void> &observable) {
+	return rpl::make_producer<>([&observable](
+			const rpl::consumer<> &consumer) {
 		auto lifetime = rpl::lifetime();
 		lifetime.make_state<base::Subscription>(
 			observable.add_subscription([consumer]() {
 				consumer.put_next({});
 			}));
 		return lifetime;
-	};
+	});
 }
 
 } // namespace base

Telegram/SourceFiles/boxes/peer_list_box.h

@@ -402,7 +402,7 @@ public:
 		update();
 	}
 
-	rpl::producer<Ui::ScrollToRequest> scrollToRequests() const {
+	auto scrollToRequests() const {
 		return _scrollToRequests.events();
 	}
 

Telegram/SourceFiles/boxes/sticker_set_box.h

@@ -69,7 +69,7 @@ public:
 	QString shortName() const;
 
 	void install();
-	rpl::producer<uint64> setInstalled() const {
+	auto setInstalled() const {
 		return _setInstalled.events();
 	}
 

Telegram/SourceFiles/chat_helpers/tabbed_selector.h

@@ -87,7 +87,7 @@ public:
 	bool wheelEventFromFloatPlayer(QEvent *e);
 	QRect rectForFloatPlayer() const;
 
-	rpl::producer<> showRequests() const {
+	auto showRequests() const {
 		return _showRequests.events();
 	}
 

Telegram/SourceFiles/data/data_flags.h

@@ -69,13 +69,13 @@ public:
 			updated(diff);
 		}
 	}
-	Type current() const {
+	auto current() const {
 		return _value;
 	}
-	rpl::producer<Change> changes() const {
+	auto changes() const {
 		return _changes.events();
 	}
-	rpl::producer<Change> value() const {
+	auto value() const {
 		return _changes.events_starting_with({
 			Type::from_raw(kEssential),
 			_value });

Telegram/SourceFiles/data/data_peer.h

@@ -395,10 +395,10 @@ public:
 	void removeFlags(MTPDuser::Flags which) {
 		_flags.remove(which);
 	}
-	MTPDuser::Flags flags() const {
+	auto flags() const {
 		return _flags.current();
 	}
-	rpl::producer<Flags::Change> flagsValue() const {
+	auto flagsValue() const {
 		return _flags.value();
 	}
 
@@ -411,10 +411,10 @@ public:
 	void removeFullFlags(MTPDuserFull::Flags which) {
 		_fullFlags.remove(which);
 	}
-	MTPDuserFull::Flags fullFlags() const {
+	auto fullFlags() const {
 		return _fullFlags.current();
 	}
-	rpl::producer<FullFlags::Change> fullFlagsValue() const {
+	auto fullFlagsValue() const {
 		return _fullFlags.value();
 	}
 
@@ -569,10 +569,10 @@ public:
 	void removeFlags(MTPDchat::Flags which) {
 		_flags.remove(which);
 	}
-	MTPDchat::Flags flags() const {
+	auto flags() const {
 		return _flags.current();
 	}
-	rpl::producer<Flags::Change> flagsValue() const {
+	auto flagsValue() const {
 		return _flags.value();
 	}
 
@@ -803,10 +803,10 @@ public:
 	void removeFlags(MTPDchannel::Flags which) {
 		_flags.remove(which);
 	}
-	MTPDchannel::Flags flags() const {
+	auto flags() const {
 		return _flags.current();
 	}
-	rpl::producer<Flags::Change> flagsValue() const {
+	auto flagsValue() const {
 		return _flags.value();
 	}
 
@@ -819,10 +819,10 @@ public:
 	void removeFullFlags(MTPDchannelFull::Flags which) {
 		_fullFlags.remove(which);
 	}
-	MTPDchannelFull::Flags fullFlags() const {
+	auto fullFlags() const {
 		return _fullFlags.current();
 	}
-	rpl::producer<FullFlags::Change> fullFlagsValue() const {
+	auto fullFlagsValue() const {
 		return _fullFlags.value();
 	}
 
@@ -923,20 +923,20 @@ public:
 	using Restrictions = ChannelRestrictions;
 	using AdminRightFlags = Data::Flags<AdminRights>;
 	using RestrictionFlags = Data::Flags<Restrictions>;
-	AdminRights adminRights() const {
+	auto adminRights() const {
 		return _adminRights.current();
 	}
-	rpl::producer<AdminRightFlags::Change> adminRightsValue() const {
+	auto adminRightsValue() const {
 		return _adminRights.value();
 	}
 	void setAdminRights(const MTPChannelAdminRights &rights);
 	bool hasAdminRights() const {
 		return (adminRights() != 0);
 	}
-	Restrictions restrictions() const {
+	auto restrictions() const {
 		return _restrictions.current();
 	}
-	rpl::producer<RestrictionFlags::Change> restrictionsValue() const {
+	auto restrictionsValue() const {
 		return _restrictions.value();
 	}
 	bool restricted(Restriction right) const {

Telegram/SourceFiles/data/data_peer_values.h

@@ -27,9 +27,9 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 namespace Data {
 
-template <typename ChangeType>
+template <typename ChangeType, typename Error, typename Generator>
 inline auto FlagsValueWithMask(
-		rpl::producer<ChangeType> &&value,
+		rpl::producer<ChangeType, Error, Generator> &&value,
 		typename ChangeType::Type mask) {
 	return std::move(value)
 		| rpl::filter([mask](const ChangeType &change) {
@@ -40,9 +40,9 @@ inline auto FlagsValueWithMask(
 		});
 }
 
-template <typename ChangeType>
+template <typename ChangeType, typename Error, typename Generator>
 inline auto SingleFlagValue(
-		rpl::producer<ChangeType> &&value,
+		rpl::producer<ChangeType, Error, Generator> &&value,
 		typename ChangeType::Enum flag) {
 	return FlagsValueWithMask(std::move(value), flag)
 		| rpl::map([flag](typename ChangeType::Type value) {
@@ -169,7 +169,7 @@ inline auto CanWriteValue(ChatData *chat) {
 		| rpl::map(!$1);
 }
 
-inline rpl::producer<bool> CanWriteValue(ChannelData *channel) {
+inline auto CanWriteValue(ChannelData *channel) {
 	auto flagsMask = 0
 		| MTPDchannel::Flag::f_left
 		| MTPDchannel_ClientFlag::f_forbidden

Telegram/SourceFiles/history/history_shared_media.cpp

@@ -79,7 +79,7 @@ public:
 
 	void checkInsufficientMedia();
 	using AroundData = std::pair<MsgId, ApiWrap::SliceType>;
-	rpl::producer<AroundData> insufficientMediaAround() const {
+	auto insufficientMediaAround() const {
 		return _insufficientMediaAround.events();
 	}
 

Telegram/SourceFiles/history/history_user_photos.cpp

@@ -34,7 +34,7 @@ public:
 	bool applyUpdate(const Storage::UserPhotosResult &update);
 	bool applyUpdate(const Storage::UserPhotosSliceUpdate &update);
 	void checkInsufficientPhotos();
-	rpl::producer<PhotoId> insufficientPhotosAround() const {
+	auto insufficientPhotosAround() const {
 		return _insufficientPhotosAround.events();
 	}
 

Telegram/SourceFiles/info/info_top_bar.h

@@ -37,7 +37,7 @@ class TopBar : public Ui::RpWidget {
 public:
 	TopBar(QWidget *parent, const style::InfoTopBar &st);
 
-	rpl::producer<> backRequest() const {
+	auto backRequest() const {
 		return _backClicks.events();
 	}
 

Telegram/SourceFiles/info/profile/info_profile_button.cpp

@@ -64,7 +64,10 @@ Button *Button::toggleOn(rpl::producer<bool> &&toggled) {
 }
 
 rpl::producer<bool> Button::toggledValue() const {
-	return _toggle ? _toggle->checkedValue() : rpl::never<bool>();
+	if (_toggle) {
+		return _toggle->checkedValue();
+	}
+	return rpl::never<bool>();
 }
 
 void Button::paintEvent(QPaintEvent *e) {

Telegram/SourceFiles/info/profile/info_profile_inner_widget.cpp

@@ -223,7 +223,7 @@ void InnerWidget::setupUserButtons(
 	using namespace rpl::mappers;
 	auto tracker = MultiLineTracker();
 	auto topSkip = wrap->add(createSlideSkipWidget(wrap));
-	auto addButton = [&](rpl::producer<QString> &&text) {
+	auto addButton = [&](auto &&text) {
 		auto result = wrap->add(object_ptr<Ui::SlideWrap<Button>>(
 			wrap,
 			object_ptr<Button>(
@@ -269,7 +269,7 @@ object_ptr<Ui::RpWidget> InnerWidget::setupSharedMedia(
 	auto content = object_ptr<Ui::VerticalLayout>(parent);
 	auto tracker = MultiLineTracker();
 	auto addButton = [&](
-			rpl::producer<int> &&count,
+			auto &&count,
 			auto textFromCount) {
 		auto forked = std::move(count)
 			| start_spawning(content->lifetime());
@@ -375,8 +375,8 @@ object_ptr<Ui::RpWidget> InnerWidget::setupUserActions(
 	auto result = object_ptr<Ui::VerticalLayout>(parent);
 	result->add(createSkipWidget(result));
 	auto addButton = [&](
-			rpl::producer<QString> &&text,
-			rpl::producer<bool> &&toggleOn,
+			auto &&text,
+			auto &&toggleOn,
 			auto &&callback,
 			const style::InfoProfileButton &st
 				= st::infoSharedMediaButton) {

Telegram/SourceFiles/ui/abstract_button.h

@@ -65,7 +65,7 @@ public:
 		}
 	}
 
-	rpl::producer<> clicks() const {
+	auto clicks() const {
 		return _clicks.events();
 	}
 

Telegram/SourceFiles/ui/rp_widget.h

@@ -39,36 +39,36 @@ class RpWidgetWrap : public RpWidgetParent<Widget> {
 public:
 	using Parent::Parent;
 
-	rpl::producer<QRect> geometryValue() const {
+	auto geometryValue() const {
 		auto &stream = eventStreams().geometry;
 		return stream.events_starting_with_copy(this->geometry());
 	}
-	rpl::producer<QSize> sizeValue() const {
+	auto sizeValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.size(); })
 			| rpl::distinct_until_changed();
 	}
-	rpl::producer<int> heightValue() const {
+	auto heightValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.height(); })
 			| rpl::distinct_until_changed();
 	}
-	rpl::producer<int> widthValue() const {
+	auto widthValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.width(); })
 			| rpl::distinct_until_changed();
 	}
-	rpl::producer<QPoint> positionValue() const {
+	auto positionValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.topLeft(); })
 			| rpl::distinct_until_changed();
 	}
-	rpl::producer<int> leftValue() const {
+	auto leftValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.left(); })
 			| rpl::distinct_until_changed();
 	}
-	rpl::producer<int> topValue() const {
+	auto topValue() const {
 		return geometryValue()
 			| rpl::map([](QRect &&value) { return value.top(); })
 			| rpl::distinct_until_changed();
@@ -77,15 +77,16 @@ public:
 		return heightValue();
 	}
 
-	rpl::producer<QRect> paintRequest() const {
+	auto paintRequest() const {
 		return eventStreams().paint.events();
 	}
 
-	rpl::producer<> alive() const {
+	auto alive() const {
 		return eventStreams().alive.events();
 	}
 
-	void showOn(rpl::producer<bool> &&shown) {
+	template <typename Error, typename Generator>
+	void showOn(rpl::producer<bool, Error, Generator> &&shown) {
 		std::move(shown)
 			| rpl::start_with_next([this](bool visible) {
 				this->setVisible(visible);

Telegram/SourceFiles/ui/widgets/checkbox.h

@@ -39,7 +39,7 @@ public:
 	}
 	float64 currentAnimationValue(TimeMs ms);
 
-	rpl::producer<bool> checkedValue() const {
+	auto checkedValue() const {
 		return _checks.events_starting_with(checked());
 	}
 

Telegram/SourceFiles/ui/widgets/discrete_sliders.h

@@ -41,7 +41,7 @@ public:
 	void setActiveSectionFast(int index);
 	void finishAnimations();
 
-	rpl::producer<int> sectionActivated() const {
+	auto sectionActivated() const {
 		return _sectionActivated.events();
 	}
 

Telegram/SourceFiles/ui/widgets/scroll_area.h

@@ -214,7 +214,7 @@ public:
 	bool viewportEvent(QEvent *e) override;
 	void keyPressEvent(QKeyEvent *e) override;
 
-	rpl::producer<int> scrollTopValue() const {
+	auto scrollTopValue() const {
 		return _scrollTopUpdated.events_starting_with(scrollTop());
 	}
 

Telegram/SourceFiles/ui/wrap/slide_wrap.h

@@ -63,7 +63,7 @@ public:
 		return !_shown;
 	}
 
-	rpl::producer<bool> shownValue() const {
+	auto shownValue() const {
 		return _shownUpdated.events_starting_with_copy(_shown);
 	}