From b5a412929ea91056fdfafa60137f4c67f71587ea Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 3 Nov 2022 12:20:25 +0400
Subject: [PATCH] Display pinned messages bar after topic creation.

---
 .../view/history_view_replies_section.cpp     | 31 ++++++++++++-------
 .../view/history_view_replies_section.h       |  1 +
 2 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/Telegram/SourceFiles/history/view/history_view_replies_section.cpp b/Telegram/SourceFiles/history/view/history_view_replies_section.cpp
index c1855fc49..1d20b43eb 100644
--- a/Telegram/SourceFiles/history/view/history_view_replies_section.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_replies_section.cpp
@@ -483,6 +483,9 @@ void RepliesWidget::setupTopicViewer() {
 			} else {
 				refreshReplies();
 				refreshTopBarActiveChat();
+				if (_topic) {
+					subscribeToPinnedMessages();
+				}
 			}
 			_inner->update();
 		}
@@ -533,23 +536,27 @@ void RepliesWidget::subscribeToTopic() {
 	}, _topicLifetime);
 
 	if (!_topic->creating()) {
-		using EntryUpdateFlag = Data::EntryUpdate::Flag;
-		session().changes().entryUpdates(
-			EntryUpdateFlag::HasPinnedMessages
-		) | rpl::start_with_next([=](const Data::EntryUpdate &update) {
-			if (_pinnedTracker
-				&& (update.flags & EntryUpdateFlag::HasPinnedMessages)
-				&& (_topic == update.entry.get())) {
-				checkPinnedBarState();
-			}
-		}, lifetime());
-
-		setupPinnedTracker();
+		subscribeToPinnedMessages();
 	}
 
 	_cornerButtons.updateUnreadThingsVisibility();
 }
 
+void RepliesWidget::subscribeToPinnedMessages() {
+	using EntryUpdateFlag = Data::EntryUpdate::Flag;
+	session().changes().entryUpdates(
+		EntryUpdateFlag::HasPinnedMessages
+	) | rpl::start_with_next([=](const Data::EntryUpdate &update) {
+		if (_pinnedTracker
+			&& (update.flags & EntryUpdateFlag::HasPinnedMessages)
+			&& (_topic == update.entry.get())) {
+			checkPinnedBarState();
+		}
+	}, lifetime());
+
+	setupPinnedTracker();
+}
+
 void RepliesWidget::setTopic(Data::ForumTopic *topic) {
 	if (_topic == topic) {
 		return;
diff --git a/Telegram/SourceFiles/history/view/history_view_replies_section.h b/Telegram/SourceFiles/history/view/history_view_replies_section.h
index 4d7320544..214cc749f 100644
--- a/Telegram/SourceFiles/history/view/history_view_replies_section.h
+++ b/Telegram/SourceFiles/history/view/history_view_replies_section.h
@@ -214,6 +214,7 @@ private:
 	void setupRootView();
 	void setupTopicViewer();
 	void subscribeToTopic();
+	void subscribeToPinnedMessages();
 	void setTopic(Data::ForumTopic *topic);
 	void setupDragArea();
 	void setupShortcuts();