Added bot button to bar of pinned messages.

Telegram/SourceFiles/history/history_widget.cpp

@@ -6389,7 +6389,7 @@ void HistoryWidget::checkPinnedBarState() {
 		&session(),
 		_pinnedTracker->shownMessageId());
 	_pinnedBar = std::make_unique<Ui::PinnedBar>(this);
-	_pinnedBar->setContent(std::move(barContent));
+	rpl::combine(
 		Info::Profile::SharedMediaCountValue(
 			_peer,
 			nullptr,
@@ -6402,10 +6402,14 @@ void HistoryWidget::checkPinnedBarState() {
 				updatePinnedViewer();
 			}
 			return (count > 1);
-	}) | rpl::distinct_until_changed(
+		}) | rpl::distinct_until_changed(),
-	) | rpl::start_with_next([=](bool many) {
+		HistoryView::PinnedBarItemWithReplyMarkup(
-		refreshPinnedBarButton(many);
+			&session(),
+			_pinnedTracker->shownMessageId())
+	) | rpl::start_with_next([=](bool many, HistoryItem *item) {
+		refreshPinnedBarButton(many, item);
 	}, _pinnedBar->lifetime());
+	_pinnedBar->setContent(std::move(barContent));
 
 	controller()->adaptive().oneColumnValue(
 	) | rpl::start_with_next([=](bool one) {
@@ -6492,7 +6496,30 @@ void HistoryWidget::setChooseReportMessagesDetails(
 	}
 }
 
-void HistoryWidget::refreshPinnedBarButton(bool many) {
+void HistoryWidget::refreshPinnedBarButton(bool many, HistoryItem *item) {
+	if (const auto replyMarkup = item ? item->inlineReplyMarkup() : nullptr) {
+		const auto &rows = replyMarkup->data.rows;
+		if ((rows.size() == 1) && (rows.front().size() == 1)) {
+			const auto text = rows.front().front().text;
+			if (!text.isEmpty()) {
+				auto button = object_ptr<Ui::RoundButton>(
+					this,
+					rpl::single(text),
+					st::historyPinnedBotButton);
+				button->setTextTransform(
+					Ui::RoundButton::TextTransform::NoTransform);
+				button->setFullRadius(true);
+				button->setClickedCallback([=] {
+					App::activateBotCommand(controller(), item, 0, 0);
+				});
+				if (button->width() > st::historyPinnedBotButtonMaxWidth) {
+					button->setFullWidth(st::historyPinnedBotButtonMaxWidth);
+				}
+				_pinnedBar->setRightButton(std::move(button));
+				return;
+			}
+		}
+	}
 	const auto close = !many;
 	auto button = object_ptr<Ui::IconButton>(
 		this,

Telegram/SourceFiles/history/history_widget.h

@@ -512,7 +512,7 @@ private:
 	void updatePinnedViewer();
 	void setupPinnedTracker();
 	void checkPinnedBarState();
-	void refreshPinnedBarButton(bool many);
+	void refreshPinnedBarButton(bool many, HistoryItem *item);
 	void checkLastPinnedClickedIdReset(
 		int wasScrollTop,
 		int nowScrollTop);

Telegram/SourceFiles/history/view/history_view_pinned_bar.cpp

@@ -154,4 +154,56 @@ rpl::producer<Ui::MessageBarContent> PinnedBarContent(
 	}) | rpl::flatten_latest();
 }
 
+rpl::producer<HistoryItem*> PinnedBarItemWithReplyMarkup(
+		not_null<Main::Session*> session,
+		rpl::producer<PinnedId> id) {
+	return rpl::make_producer<HistoryItem*>([=,
+			id = std::move(id)](auto consumer) {
+		auto lifetime = rpl::lifetime();
+		consumer.put_next(nullptr);
+
+		struct State {
+			HistoryMessageReplyMarkup *previousReplyMarkup = nullptr;
+			rpl::lifetime lifetime;
+		};
+		const auto state = lifetime.make_state<State>();
+
+		const auto pushUnique = [=](not_null<HistoryItem*> item) {
+			const auto replyMarkup = item->inlineReplyMarkup();
+			if (state->previousReplyMarkup == replyMarkup) {
+				return;
+			}
+			consumer.put_next(item.get());
+			state->previousReplyMarkup = replyMarkup;
+		};
+
+		rpl::duplicate(
+			id
+		) | rpl::start_with_next([=](PinnedId current) {
+			const auto fullId = current.message;
+			if (!fullId) {
+				return;
+			}
+			const auto messageFlag = [=](not_null<HistoryItem*> item) {
+				using Update = Data::MessageUpdate;
+				session->changes().messageFlagsValue(
+					item,
+					Update::Flag::ReplyMarkup
+				) | rpl::start_with_next([=](const Update &update) {
+					pushUnique(update.item);
+				}, state->lifetime);
+			};
+			if (const auto item = session->data().message(fullId)) {
+				messageFlag(item);
+			} else {
+				session->api().requestMessageData(
+					session->data().peer(fullId.peer),
+					fullId.msg,
+					[=] { messageFlag(session->data().message(fullId)); });
+			}
+		}, lifetime);
+		return lifetime;
+	});
+}
+
 } // namespace HistoryView

Telegram/SourceFiles/history/view/history_view_pinned_bar.h

@@ -49,4 +49,8 @@ struct PinnedId {
 	not_null<Main::Session*> session,
 	rpl::producer<PinnedId> id);
 
+[[nodiscard]] rpl::producer<HistoryItem*> PinnedBarItemWithReplyMarkup(
+	not_null<Main::Session*> session,
+	rpl::producer<PinnedId> id);
+
 } // namespace HistoryView

Telegram/SourceFiles/ui/chat/chat.style

@@ -477,6 +477,13 @@ historyPinnedShowAll: IconButton(historyReplyCancel) {
 	icon: icon {{ "pinned_show_all", historyReplyCancelFg }};
 	iconOver: icon {{ "pinned_show_all", historyReplyCancelFgOver }};
 }
+historyPinnedBotButton: RoundButton(defaultActiveButton) {
+	width: -34px;
+	height: 30px;
+	textTop: 6px;
+	padding: margins(2px, 10px, 10px, 9px);
+}
+historyPinnedBotButtonMaxWidth: 150px;
 
 msgBotKbDuration: 200;
 msgBotKbFont: semiboldFont;