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Telegram/SourceFiles/export/export_manager.cpp

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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
+*/
+#include "export/export_manager.h"
+
+#include "export/export_controller.h"
+#include "export/view/export_view_panel_controller.h"
+#include "data/data_peer.h"
+#include "main/main_session.h"
+#include "main/main_account.h"
+#include "ui/layers/box_content.h"
+#include "base/unixtime.h"
+
+namespace Export {
+
+Manager::Manager() = default;
+
+Manager::~Manager() = default;
+
+void Manager::start(not_null<PeerData*> peer) {
+	start(&peer->session(), peer->input());
+}
+
+void Manager::startTopic(
+		not_null<PeerData*> peer,
+		MsgId topicRootId,
+		const QString &topicTitle) {
+	if (_panel) {
+		_panel->activatePanel();
+		return;
+	}
+	_controller = std::make_unique<Controller>(
+		&peer->session().mtp(),
+		peer->input(),
+		int32(topicRootId.bare),
+		uint64(peer->id.value),
+		topicTitle);
+	setupPanel(&peer->session());
+}
+
+void Manager::start(
+		not_null<Main::Session*> session,
+		const MTPInputPeer &singlePeer) {
+	if (_panel) {
+		_panel->activatePanel();
+		return;
+	}
+	_controller = std::make_unique<Controller>(
+		&session->mtp(),
+		singlePeer);
+	setupPanel(session);
+}
+
+void Manager::setupPanel(not_null<Main::Session*> session) {
+	_panel = std::make_unique<View::PanelController>(
+		session,
+		_controller.get());
+	session->account().sessionChanges(
+	) | rpl::filter([=](Main::Session *value) {
+		return (value != session);
+	}) | rpl::on_next([=] {
+		stop();
+	}, _panel->lifetime());
+
+	_viewChanges.fire(_panel.get());
+
+	_panel->stopRequests(
+	) | rpl::on_next([=] {
+		LOG(("Export Info: Stop requested."));
+		stop();
+	}, _controller->lifetime());
+}
+
+rpl::producer<View::PanelController*> Manager::currentView(
+) const {
+	return _viewChanges.events_starting_with(_panel.get());
+}
+
+bool Manager::inProgress() const {
+	return _controller != nullptr;
+}
+
+bool Manager::inProgress(not_null<Main::Session*> session) const {
+	return _panel && (&_panel->session() == session);
+}
+
+void Manager::stopWithConfirmation(Fn<void()> callback) {
+	if (!_panel) {
+		callback();
+		return;
+	}
+	auto closeAndCall = [=, callback = std::move(callback)]() mutable {
+		auto saved = std::move(callback);
+		LOG(("Export Info: Stop With Confirmation."));
+		stop();
+		if (saved) {
+			saved();
+		}
+	};
+	_panel->stopWithConfirmation(std::move(closeAndCall));
+}
+
+void Manager::stop() {
+	if (_panel) {
+		LOG(("Export Info: Destroying."));
+		_panel = nullptr;
+		_viewChanges.fire(nullptr);
+	}
+	_controller = nullptr;
+}
+
+} // namespace Export