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Telegram/SourceFiles/window/window_chat_preview.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "base/unique_qptr.h"
+#include "dialogs/dialogs_key.h"
+
+namespace Ui {
+class PopupMenu;
+} // namespace Ui
+
+namespace Window {
+
+class SessionController;
+
+class ChatPreviewManager final {
+public:
+	ChatPreviewManager(not_null<SessionController*> controller);
+
+	bool show(
+		Dialogs::RowDescriptor row,
+		Fn<void(bool shown)> callback = nullptr,
+		QPointer<QWidget> parentOverride = nullptr,
+		std::optional<QPoint> positionOverride = {});
+	bool schedule(
+		Dialogs::RowDescriptor row,
+		Fn<void(bool shown)> callback = nullptr,
+		QPointer<QWidget> parentOverride = nullptr,
+		std::optional<QPoint> positionOverride = {});
+	void cancelScheduled();
+
+private:
+	void showScheduled();
+
+	const not_null<SessionController*> _controller;
+	Dialogs::RowDescriptor _scheduled;
+	Fn<void(bool)> _scheduledCallback;
+	QPointer<QWidget> _scheduledParentOverride;
+	std::optional<QPoint> _scheduledPositionOverride;
+	base::Timer _timer;
+
+	rpl::lifetime _topicLifetime;
+
+	base::unique_qptr<Ui::PopupMenu> _menu;
+
+};
+
+} // namespace Window