Added Ui::Show implementation for Ui::BoxContent.

ui/layers/box_content.cpp

@@ -271,4 +271,41 @@ void BoxContent::paintEvent(QPaintEvent *e) {
 	}
 }
 
+BoxShow::BoxShow(not_null<Ui::BoxContent*> box)
+: Show()
+, _weak(Ui::MakeWeak(box.get())) {
+}
+
+BoxShow::~BoxShow() = default;
+
+void BoxShow::showBox(
+		object_ptr<BoxContent> content,
+		LayerOptions options) const {
+	if (_weak && _weak->isBoxShown()) {
+		_weak->getDelegate()->show(std::move(content), options);
+	}
+}
+
+void BoxShow::hideLayer() const {
+	if (_weak && _weak->isBoxShown()) {
+		_weak->getDelegate()->hideLayer();
+	}
+}
+
+not_null<QWidget*> BoxShow::toastParent() const {
+	if (!_toastParent) {
+		Assert(_weak != nullptr);
+		_toastParent = Ui::MakeWeak(_weak->window()); // =(
+	}
+	return _toastParent.data();
+}
+
+bool BoxShow::valid() const {
+	return _weak;
+}
+
+BoxShow::operator bool() const {
+	return valid();
+}
+
 } // namespace Ui

ui/layers/box_content.h

@@ -11,6 +11,7 @@
 #include "ui/wrap/padding_wrap.h"
 #include "ui/widgets/labels.h"
 #include "ui/layers/layer_widget.h"
+#include "ui/layers/show.h"
 #include "ui/effects/animation_value.h"
 #include "ui/text/text_entity.h"
 #include "ui/rp_widget.h"
@@ -363,4 +364,20 @@ private:
 
 };
 
+class BoxShow : public Show {
+public:
+	explicit BoxShow(not_null<Ui::BoxContent*> box);
+	~BoxShow();
+	void showBox(
+		object_ptr<BoxContent> content,
+		LayerOptions options = LayerOption::KeepOther) const override;
+	void hideLayer() const override;
+	[[nodiscard]] not_null<QWidget*> toastParent() const override;
+	[[nodiscard]] bool valid() const override;
+	operator bool() const override;
+private:
+	mutable QPointer<QWidget> _toastParent;
+	const QPointer<Ui::BoxContent> _weak;
+};
+
 } // namespace Ui