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Telegram/SourceFiles/info/polls/info_polls_results_inner_widget.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 "ui/rp_widget.h"
+#include "ui/widgets/scroll_area.h"
+#include "base/object_ptr.h"
+
+namespace Ui {
+class VerticalLayout;
+} // namespace Ui
+
+namespace Info {
+class Controller;
+} // namespace Info
+
+namespace Info::Polls {
+
+class Memento;
+class ListController;
+
+class InnerWidget final : public Ui::RpWidget {
+public:
+	InnerWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		not_null<PollData*> poll,
+		FullMsgId contextId);
+
+	[[nodiscard]] not_null<PollData*> poll() const {
+		return _poll;
+	}
+	[[nodiscard]] FullMsgId contextId() const {
+		return _contextId;
+	}
+
+	[[nodiscard]] auto scrollToRequests() const
+		-> rpl::producer<Ui::ScrollToRequest>;
+
+	[[nodiscard]] auto showPeerInfoRequests() const
+		-> rpl::producer<not_null<PeerData*>>;
+
+	[[nodiscard]] int desiredHeight() const;
+
+	void saveState(not_null<Memento*> memento);
+	void restoreState(not_null<Memento*> memento);
+
+protected:
+	void visibleTopBottomUpdated(
+		int visibleTop,
+		int visibleBottom) override;
+
+private:
+	void setupContent();
+
+	not_null<Controller*> _controller;
+	not_null<PollData*> _poll;
+	FullMsgId _contextId;
+	object_ptr<Ui::VerticalLayout> _content;
+	base::flat_map<QByteArray, not_null<ListController*>> _sections;
+
+	rpl::event_stream<Ui::ScrollToRequest> _scrollToRequests;
+	rpl::event_stream<not_null<PeerData*>> _showPeerInfoRequests;
+	rpl::variable<int> _visibleTop = 0;
+
+};
+
+} // namespace Info::Polls