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Telegram/SourceFiles/boxes/peers/edit_peer_requests_box.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 "boxes/peer_list_box.h"
+#include "base/weak_ptr.h"
+#include "mtproto/sender.h"
+
+namespace Window {
+class SessionNavigation;
+} // namespace Window
+
+namespace Ui {
+class RippleAnimation;
+} // namespace Ui
+
+class RequestsBoxController final
+	: public PeerListController
+	, public base::has_weak_ptr {
+public:
+	RequestsBoxController(
+		not_null<Window::SessionNavigation*> navigation,
+		not_null<PeerData*> peer);
+	~RequestsBoxController();
+
+	static void Start(
+		not_null<Window::SessionNavigation*> navigation,
+		not_null<PeerData*> peer);
+
+	Main::Session &session() const override;
+	void prepare() override;
+	void rowClicked(not_null<PeerListRow*> row) override;
+	void rowElementClicked(
+		not_null<PeerListRow*> row,
+		int element) override;
+	void loadMoreRows() override;
+
+	std::unique_ptr<PeerListRow> createSearchRow(
+		not_null<PeerData*> peer) override;
+	std::unique_ptr<PeerListRow> createRestoredRow(
+		not_null<PeerData*> peer) override;
+
+	std::unique_ptr<PeerListState> saveState() const override;
+	void restoreState(std::unique_ptr<PeerListState> state) override;
+
+private:
+	class RowHelper;
+
+	struct SavedState : SavedStateBase {
+		using SearchStateBase = PeerListSearchController::SavedStateBase;
+		std::unique_ptr<SearchStateBase> searchState;
+		base::flat_map<not_null<UserData*>, TimeId> dates;
+		TimeId offsetDate = 0;
+		UserData *offsetUser = nullptr;
+		bool allLoaded = false;
+		bool wasLoading = false;
+	};
+
+	static std::unique_ptr<PeerListSearchController> CreateSearchController(
+		not_null<PeerData*> peer);
+
+	[[nodiscard]] std::unique_ptr<PeerListRow> createRow(
+		not_null<UserData*> user,
+		TimeId date = 0);
+
+	void appendRow(not_null<UserData*> user, TimeId date);
+	void refreshDescription();
+	void processRequest(not_null<UserData*> user, bool approved);
+
+	void subscribeToMigration();
+	void migrate(not_null<ChatData*> chat, not_null<ChannelData*> channel);
+
+	const not_null<Window::SessionNavigation*> _navigation;
+	const std::unique_ptr<RowHelper> _helper;
+	not_null<PeerData*> _peer;
+	MTP::Sender _api;
+
+	base::flat_map<not_null<UserData*>, TimeId> _dates;
+
+	TimeId _offsetDate = 0;
+	UserData *_offsetUser = nullptr;
+	mtpRequestId _loadRequestId = 0;
+	bool _allLoaded = false;
+
+};
+
+// Members, banned and restricted users server side search.
+class RequestsBoxSearchController final : public PeerListSearchController {
+public:
+	RequestsBoxSearchController(not_null<PeerData*> peer);
+
+	void searchQuery(const QString &query) override;
+	bool isLoading() override;
+	bool loadMoreRows() override;
+
+	void removeFromCache(not_null<UserData*> user);
+	[[nodiscard]] TimeId dateForUser(not_null<UserData*> user);
+
+	std::unique_ptr<SavedStateBase> saveState() const override;
+	void restoreState(std::unique_ptr<SavedStateBase> state) override;
+
+private:
+	struct SavedState : SavedStateBase {
+		QString query;
+		TimeId offsetDate = 0;
+		UserData *offsetUser = nullptr;
+		bool allLoaded = false;
+		bool wasLoading = false;
+	};
+	struct Item {
+		not_null<UserData*> user;
+		TimeId date = 0;
+	};
+	struct CacheEntry {
+		std::vector<Item> items;
+		int requestedCount = 0;
+	};
+	struct Query {
+		QString text;
+		TimeId offsetDate = 0;
+		UserData *offsetUser = nullptr;
+	};
+
+	void searchOnServer();
+	bool searchInCache();
+	void searchDone(
+		mtpRequestId requestId,
+		const std::vector<Item> &items,
+		int requestedCount);
+
+	not_null<PeerData*> _peer;
+	MTP::Sender _api;
+
+	base::Timer _timer;
+	QString _query;
+	mtpRequestId _requestId = 0;
+	TimeId _offsetDate = 0;
+	UserData *_offsetUser = nullptr;
+	bool _allLoaded = false;
+	base::flat_map<QString, CacheEntry> _cache;
+	base::flat_map<mtpRequestId, Query> _queries;
+	base::flat_map<not_null<UserData*>, TimeId> _dates;
+
+};