From b96e09534dfba482e10087016ccad4fdcb44ad04 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 2 Aug 2022 12:38:28 +0300
Subject: [PATCH] Fix blocked list loading.

Fixes #24783.
---
 .../settings/settings_blocked_peers.cpp       | 22 +++++++++++--------
 .../settings/settings_blocked_peers.h         |  7 ++++++
 2 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/Telegram/SourceFiles/settings/settings_blocked_peers.cpp b/Telegram/SourceFiles/settings/settings_blocked_peers.cpp
index 7ea81f1073..620433d736 100644
--- a/Telegram/SourceFiles/settings/settings_blocked_peers.cpp
+++ b/Telegram/SourceFiles/settings/settings_blocked_peers.cpp
@@ -30,7 +30,8 @@ Blocked::Blocked(
 	QWidget *parent,
 	not_null<Window::SessionController*> controller)
 : Section(parent)
-, _controller(controller) {
+, _controller(controller)
+, _container(Ui::CreateChild<Ui::VerticalLayout>(this)) {
 
 	setupContent();
 
@@ -117,12 +118,11 @@ QPointer<Ui::RpWidget> Blocked::createPinnedToTop(not_null<QWidget*> parent) {
 
 void Blocked::setupContent() {
 	using namespace rpl::mappers;
-	const auto container = Ui::CreateChild<Ui::VerticalLayout>(this);
 
-	const auto listWrap = container->add(
+	const auto listWrap = _container->add(
 		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
-			container,
-			object_ptr<Ui::VerticalLayout>(container)));
+			_container,
+			object_ptr<Ui::VerticalLayout>(_container)));
 	listWrap->toggleOn(
 		_emptinessChanges.events_starting_with(true) | rpl::map(!_1),
 		anim::type::instant);
@@ -152,10 +152,10 @@ void Blocked::setupContent() {
 		_countBlocked = content->fullRowsCount();
 	}
 
-	const auto emptyWrap = container->add(
+	const auto emptyWrap = _container->add(
 		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
-			container,
-			object_ptr<Ui::VerticalLayout>(container)));
+			_container,
+			object_ptr<Ui::VerticalLayout>(_container)));
 	emptyWrap->toggleOn(
 		_emptinessChanges.events_starting_with(false),
 		anim::type::instant);
@@ -200,7 +200,7 @@ void Blocked::setupContent() {
 		AddSkip(content, st::blockedUsersListIconPadding.top());
 	}
 
-	Ui::ResizeFitChild(this, container);
+	Ui::ResizeFitChild(this, _container);
 }
 
 void Blocked::checkTotal(int total) {
@@ -208,6 +208,10 @@ void Blocked::checkTotal(int total) {
 	_emptinessChanges.fire(total <= 0);
 }
 
+void Blocked::visibleTopBottomUpdated(int visibleTop, int visibleBottom) {
+	setChildVisibleTopBottom(_container, visibleTop, visibleBottom);
+}
+
 void Blocked::showFinished() {
 	_showFinished.fire({});
 }
diff --git a/Telegram/SourceFiles/settings/settings_blocked_peers.h b/Telegram/SourceFiles/settings/settings_blocked_peers.h
index a5642faa9f..f70726e01a 100644
--- a/Telegram/SourceFiles/settings/settings_blocked_peers.h
+++ b/Telegram/SourceFiles/settings/settings_blocked_peers.h
@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "settings/settings_common.h"
 
+namespace Ui {
+class VerticalLayout;
+} // namespace Ui
+
 namespace Window {
 class Controller;
 } // namespace Window
@@ -32,7 +36,10 @@ private:
 	void setupContent();
 	void checkTotal(int total);
 
+	void visibleTopBottomUpdated(int visibleTop, int visibleBottom) override;
+
 	const not_null<Window::SessionController*> _controller;
+	const not_null<Ui::VerticalLayout*> _container;
 
 	base::unique_qptr<Ui::RpWidget> _loading;