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Telegram/lib_ui/ui/toast/toast_manager.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/toast/toast.h"
+#include "base/timer.h"
+
+namespace Ui {
+namespace Toast {
+namespace internal {
+
+class Widget;
+class Manager final : public QObject {
+	struct CreateTag {
+	};
+
+public:
+	Manager(not_null<QWidget*> parent, const CreateTag &);
+	Manager(const Manager &other) = delete;
+	Manager &operator=(const Manager &other) = delete;
+	~Manager();
+
+	static not_null<Manager*> instance(not_null<QWidget*> parent);
+
+	base::weak_ptr<Instance> addToast(std::unique_ptr<Instance> &&toast);
+
+protected:
+	bool eventFilter(QObject *o, QEvent *e);
+
+private:
+	void toastWidgetDestroyed(QObject *widget);
+	void startNextHideTimer();
+	void hideByTimer();
+
+	base::Timer _hideTimer;
+
+	base::flat_multi_map<crl::time, not_null<Instance*>> _toastByHideTime;
+	base::flat_map<not_null<Widget*>, not_null<Instance*>> _toastByWidget;
+	std::vector<std::unique_ptr<Instance>> _toasts;
+	std::vector<QPointer<QWidget>> _toastParents;
+
+};
+
+} // namespace internal
+} // namespace Toast
+} // namespace Ui