From fbd9437775605f530cd5511aae5076823b3c89d2 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Thu, 5 May 2022 23:20:05 +0300
Subject: [PATCH] Added ability to transfer variant data between nearest
 setting sections.

---
 Telegram/SourceFiles/info/info_controller.cpp             | 8 ++++++++
 Telegram/SourceFiles/info/info_controller.h               | 7 ++++++-
 Telegram/SourceFiles/info/info_wrap_widget.cpp            | 3 +++
 .../SourceFiles/info/settings/info_settings_widget.cpp    | 3 ++-
 Telegram/SourceFiles/settings/settings_common.h           | 2 ++
 5 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/Telegram/SourceFiles/info/info_controller.cpp b/Telegram/SourceFiles/info/info_controller.cpp
index bde22cd81..525323c83 100644
--- a/Telegram/SourceFiles/info/info_controller.cpp
+++ b/Telegram/SourceFiles/info/info_controller.cpp
@@ -342,6 +342,14 @@ rpl::producer<SparseIdsMergedSlice> Controller::mediaSource(
 		limitAfter);
 }
 
+std::any &Controller::stepDataReference() {
+	return _stepData;
+}
+
+void Controller::takeStepData(not_null<Controller*> another) {
+	_stepData = base::take(another->_stepData);
+}
+
 Controller::~Controller() = default;
 
 } // namespace Info
diff --git a/Telegram/SourceFiles/info/info_controller.h b/Telegram/SourceFiles/info/info_controller.h
index 10a38a7ab..e7f48d518 100644
--- a/Telegram/SourceFiles/info/info_controller.h
+++ b/Telegram/SourceFiles/info/info_controller.h
@@ -10,7 +10,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <rpl/variable.h>
 #include "data/data_search_controller.h"
 #include "window/window_session_controller.h"
-#include "settings/settings_common.h"
 
 namespace Ui {
 class SearchFieldController;
@@ -214,6 +213,9 @@ public:
 
 	void removeFromStack(const std::vector<Section> &sections) const;
 
+	void takeStepData(not_null<Controller*> another);
+	std::any &stepDataReference();
+
 	rpl::lifetime &lifetime() {
 		return _lifetime;
 	}
@@ -238,6 +240,9 @@ private:
 	rpl::variable<bool> _seachEnabledByContent = false;
 	bool _searchStartsFocused = false;
 
+	// Data between sections based on steps.
+	std::any _stepData;
+
 	rpl::lifetime _lifetime;
 
 };
diff --git a/Telegram/SourceFiles/info/info_wrap_widget.cpp b/Telegram/SourceFiles/info/info_wrap_widget.cpp
index 5fc532606..80e569939 100644
--- a/Telegram/SourceFiles/info/info_wrap_widget.cpp
+++ b/Telegram/SourceFiles/info/info_wrap_widget.cpp
@@ -920,6 +920,9 @@ void WrapWidget::showNewContent(
 	auto newController = createController(
 		_controller->parentController(),
 		memento);
+	if (_controller && newController) {
+		newController->takeStepData(_controller.get());
+	}
 	auto newContent = object_ptr<ContentWidget>(nullptr);
 	if (needAnimation) {
 		newContent = createContent(memento, newController.get());
diff --git a/Telegram/SourceFiles/info/settings/info_settings_widget.cpp b/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
index 285497ed6..0797a96c2 100644
--- a/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
+++ b/Telegram/SourceFiles/info/settings/info_settings_widget.cpp
@@ -8,7 +8,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "info/settings/info_settings_widget.h"
 
 #include "info/info_memento.h"
-#include "info/info_controller.h"
 #include "settings/settings_common.h"
 #include "settings/settings_main.h"
 #include "settings/settings_information.h"
@@ -60,6 +59,8 @@ Widget::Widget(
 		controller->showBackFromStack();
 	}, _inner->lifetime());
 
+	_inner->setStepDataReference(controller->stepDataReference());
+
 	_removesFromStack.events(
 	) | rpl::start_with_next([=](const std::vector<Type> &types) {
 		const auto sections = ranges::views::all(
diff --git a/Telegram/SourceFiles/settings/settings_common.h b/Telegram/SourceFiles/settings/settings_common.h
index adf4e62fd..e59787041 100644
--- a/Telegram/SourceFiles/settings/settings_common.h
+++ b/Telegram/SourceFiles/settings/settings_common.h
@@ -100,6 +100,8 @@ public:
 			not_null<Ui::RpWidget*> parent) {
 		return nullptr;
 	}
+	virtual void setStepDataReference(std::any &data) {
+	}
 };
 
 template <typename SectionType>