From b2a1c100361f61d5cc35982c202290aeea707a6c Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Wed, 31 Mar 2021 03:26:32 +0300
Subject: [PATCH] Removed masks panel when there are no masks.

---
 Telegram/SourceFiles/boxes/stickers_box.cpp   |  2 +-
 .../chat_helpers/stickers_list_widget.cpp     |  5 ++
 .../chat_helpers/stickers_list_widget.h       |  2 +
 .../chat_helpers/tabbed_selector.cpp          | 53 ++++++++++++++-----
 .../chat_helpers/tabbed_selector.h            |  2 +
 5 files changed, 50 insertions(+), 14 deletions(-)

diff --git a/Telegram/SourceFiles/boxes/stickers_box.cpp b/Telegram/SourceFiles/boxes/stickers_box.cpp
index e78fd0cb6..5d6164832 100644
--- a/Telegram/SourceFiles/boxes/stickers_box.cpp
+++ b/Telegram/SourceFiles/boxes/stickers_box.cpp
@@ -641,7 +641,7 @@ void StickersBox::refreshTabs() {
 		sections.push_back(tr::lng_stickers_installed_tab(tr::now).toUpper());
 		_tabIndices.push_back(Section::Installed);
 	}
-	if (!stickers.maskSetsOrder().isEmpty() && _masks.widget()) {
+	if (_masks.widget()) {
 		sections.push_back(tr::lng_stickers_masks_tab(tr::now).toUpper());
 		_tabIndices.push_back(Section::Masks);
 	}
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
index 06499ce08..bb6dbb599 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@@ -3237,6 +3237,7 @@ void StickersListWidget::removeSet(uint64 setId) {
 			if (writeRecent) {
 				session().saveSettings();
 			}
+			session().data().stickers().notifyUpdated();
 		}
 		_removingSetId = 0;
 		_checkForHide.fire({});
@@ -3258,6 +3259,10 @@ Data::StickersSetsOrder &StickersListWidget::defaultSetsOrderRef() {
 		: session().data().stickers().maskSetsOrderRef();
 }
 
+bool StickersListWidget::mySetsEmpty() const {
+	return _mySets.empty();
+}
+
 StickersListWidget::~StickersListWidget() = default;
 
 } // namespace ChatHelpers
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
index eeba5ac9b..58fa39802 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
@@ -89,6 +89,8 @@ public:
 		not_null<Ui::PopupMenu*> menu,
 		SendMenu::Type type) override;
 
+	bool mySetsEmpty() const;
+
 	~StickersListWidget();
 
 protected:
diff --git a/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp b/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp
index 8c6564495..e4e75f11f 100644
--- a/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp
@@ -496,11 +496,19 @@ rpl::producer<> TabbedSelector::slideFinished() const {
 	return _slideFinished.events();
 }
 
-void TabbedSelector::resizeEvent(QResizeEvent *e) {
-	if (_tabsSlider) {
-		_tabsSlider->resizeToWidth(width());
-		_tabsSlider->moveToLeft(0, 0);
+void TabbedSelector::updateTabsSliderGeometry() {
+	if (!_tabsSlider) {
+		return;
 	}
+	const auto w = mediaEditor() && hasMasksTab() && masks()->mySetsEmpty()
+		? width() / 2
+		: width();
+	_tabsSlider->resizeToWidth(w);
+	_tabsSlider->moveToLeft(0, 0);
+}
+
+void TabbedSelector::resizeEvent(QResizeEvent *e) {
+	updateTabsSliderGeometry();
 	if (_topShadow && _tabsSlider) {
 		_topShadow->setGeometry(
 			_tabsSlider->x(),
@@ -680,9 +688,16 @@ void TabbedSelector::refreshStickers() {
 		}
 	}
 	if (hasMasksTab()) {
-		masks()->refreshStickers();
+		const auto masksList = masks();
+		masksList->refreshStickers();
 		if (isHidden() || _currentTabType != SelectorTab::Masks) {
-			masks()->preloadImages();
+			masksList->preloadImages();
+		}
+
+		fillTabsSliderSections();
+		updateTabsSliderGeometry();
+		if (hasStickersTab() && masksList->mySetsEmpty()) {
+			_tabsSlider->setActiveSection(indexByType(SelectorTab::Stickers));
 		}
 	}
 }
@@ -869,9 +884,27 @@ void TabbedSelector::setRoundRadius(int radius) {
 void TabbedSelector::createTabsSlider() {
 	_tabsSlider.create(this, st::emojiTabs);
 
+	fillTabsSliderSections();
+
+	_tabsSlider->setActiveSectionFast(indexByType(_currentTabType));
+	_tabsSlider->sectionActivated(
+	) | rpl::start_with_next([=] {
+		switchTab();
+	}, lifetime());
+}
+
+void TabbedSelector::fillTabsSliderSections() {
+	if (!_tabsSlider) {
+		return;
+	}
+
 	const auto sections = ranges::views::all(
 		_tabs
-	) | ranges::views::transform([=](const Tab &tab) {
+	) | ranges::views::filter([&](const Tab &tab) {
+		return (tab.type() == SelectorTab::Masks)
+			? !masks()->mySetsEmpty()
+			: true;
+	}) | ranges::views::transform([&](const Tab &tab) {
 		return [type = tab.type()] {
 			switch (type) {
 			case SelectorTab::Emoji:
@@ -886,12 +919,6 @@ void TabbedSelector::createTabsSlider() {
 		}()(tr::now).toUpper();
 	}) | ranges::to_vector;
 	_tabsSlider->setSections(sections);
-
-	_tabsSlider->setActiveSectionFast(indexByType(_currentTabType));
-	_tabsSlider->sectionActivated(
-	) | rpl::start_with_next([=] {
-		switchTab();
-	}, lifetime());
 }
 
 bool TabbedSelector::hasSectionIcons() const {
diff --git a/Telegram/SourceFiles/chat_helpers/tabbed_selector.h b/Telegram/SourceFiles/chat_helpers/tabbed_selector.h
index bd881cb31..ff5b7fad5 100644
--- a/Telegram/SourceFiles/chat_helpers/tabbed_selector.h
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_selector.h
@@ -198,6 +198,8 @@ private:
 	bool hasSectionIcons() const;
 	void setWidgetToScrollArea();
 	void createTabsSlider();
+	void fillTabsSliderSections();
+	void updateTabsSliderGeometry();
 	void switchTab();
 
 	not_null<Tab*> getTab(int index);