Move third column from HistoryWidget to MainWidget.

Telegram/SourceFiles/boxes/sticker_set_box.cpp

@@ -56,12 +56,12 @@ void StickerSetBox::prepare() {
 	onUpdateButtons();
 
 	connect(_inner, SIGNAL(updateButtons()), this, SLOT(onUpdateButtons()));
-	connect(_inner, SIGNAL(installed(uint64)), this, SLOT(onInstalled(uint64)));
-}
-
-void StickerSetBox::onInstalled(uint64 setId) {
-	emit installed(setId);
-	closeBox();
+	_inner->setInstalled()
+		| rpl::on_next([this](auto &&setId) {
+			Auth().api().stickerSetInstalled(setId);
+			closeBox();
+		})
+		| rpl::start(lifetime());
 }
 
 void StickerSetBox::onAddStickers() {
@@ -250,7 +250,7 @@ void StickerSetBox::Inner::installDone(const MTPmessages_StickerSetInstallResult
 		Local::writeInstalledStickers();
 		Auth().data().stickersUpdated().notify(true);
 	}
-	emit installed(_setId);
+	_setInstalled.fire_copy(_setId);
 }
 
 bool StickerSetBox::Inner::installFail(const RPCError &error) {

Telegram/SourceFiles/boxes/sticker_set_box.h

@@ -35,9 +35,6 @@ class StickerSetBox : public BoxContent, public RPCSender {
 public:
 	StickerSetBox(QWidget*, const MTPInputStickerSet &set);
 
-signals:
-	void installed(uint64 id);
-
 protected:
 	void prepare() override;
 
@@ -48,8 +45,6 @@ private slots:
 	void onShareStickers();
 	void onUpdateButtons();
 
-	void onInstalled(uint64 id);
-
 private:
 	void updateButtons();
 
@@ -74,6 +69,9 @@ public:
 	QString shortName() const;
 
 	void install();
+	rpl::producer<uint64> setInstalled() const {
+		return _setInstalled.events();
+	}
 
 	~Inner();
 
@@ -89,7 +87,6 @@ private slots:
 
 signals:
 	void updateButtons();
-	void installed(uint64 id);
 
 private:
 	void updateSelected();
@@ -127,4 +124,6 @@ private:
 	QTimer _previewTimer;
 	int _previewShown = -1;
 
+	rpl::event_stream<uint64> _setInstalled;
+
 };

Telegram/SourceFiles/boxes/stickers_box.cpp

@@ -1094,7 +1094,7 @@ void StickersBox::Inner::saveGroupSet() {
 	auto newId = (_megagroupSetInput.type() == mtpc_inputStickerSetID) ? _megagroupSetInput.c_inputStickerSetID().vid.v : 0;
 	if (newId != oldId) {
 		Auth().api().setGroupStickerSet(_megagroupSet, _megagroupSetInput);
-		App::main()->onStickersInstalled(Stickers::MegagroupSetId);
+		Auth().api().stickerSetInstalled(Stickers::MegagroupSetId);
 	}
 }