diff --git a/ui/layers/box_content.cpp b/ui/layers/box_content.cpp
index 5034048..be8b707 100644
--- a/ui/layers/box_content.cpp
+++ b/ui/layers/box_content.cpp
@@ -179,6 +179,24 @@ void BoxContent::scrollToY(int top, int bottom) {
 	}
 }
 
+void BoxContent::sendScrollViewportEvent(not_null<QEvent*> event) {
+	if (_scroll) {
+		_scroll->viewportEvent(event);
+	}
+}
+
+rpl::producer<> BoxContent::scrolls() const {
+	return _scroll ? _scroll->scrolls() : rpl::never<>();
+}
+
+int BoxContent::scrollTop() const {
+	return _scroll ? _scroll->scrollTop() : 0;
+}
+
+int BoxContent::scrollHeight() const {
+	return _scroll ? _scroll->height() : 0;
+}
+
 void BoxContent::scrollByDraggingDelta(int delta) {
 	_draggingScroll.checkDeltaScroll(_scroll ? delta : 0);
 }
diff --git a/ui/layers/box_content.h b/ui/layers/box_content.h
index ec1ac76..034e0ee 100644
--- a/ui/layers/box_content.h
+++ b/ui/layers/box_content.h
@@ -209,6 +209,10 @@ public:
 	void scrollByDraggingDelta(int delta);
 
 	void scrollToY(int top, int bottom = -1);
+	void sendScrollViewportEvent(not_null<QEvent*> event);
+	[[nodiscard]] rpl::producer<> scrolls() const;
+	[[nodiscard]] int scrollTop() const;
+	[[nodiscard]] int scrollHeight() const;
 
 protected:
 	virtual void prepare() = 0;