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Telegram/SourceFiles/dialogs/dialogs_search_from_controllers.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 "dialogs/dialogs_search_from_controllers.h"
+
+#include "lang/lang_keys.h"
+#include "data/data_peer_values.h"
+#include "data/data_channel.h"
+#include "data/data_chat.h"
+#include "data/data_user.h"
+#include "main/main_session.h"
+#include "apiwrap.h"
+
+namespace Dialogs {
+
+object_ptr<Ui::BoxContent> SearchFromBox(
+		not_null<PeerData*> peer,
+		Fn<void(not_null<PeerData*>)> callback,
+		Fn<void()> closedCallback) {
+	auto createController = [
+		peer,
+		callback = std::move(callback)
+	]() -> std::unique_ptr<PeerListController> {
+		if (peer && (peer->isChat() || peer->isMegagroup())) {
+			return std::make_unique<Dialogs::SearchFromController>(
+				peer,
+				std::move(callback));
+		}
+		return nullptr;
+	};
+	if (auto controller = createController()) {
+		auto subscription = std::make_shared<rpl::lifetime>();
+		auto box = Box<PeerListBox>(
+			std::move(controller),
+			[subscription](not_null<PeerListBox*> box) {
+				box->addButton(tr::lng_cancel(), [box, subscription] {
+					box->closeBox();
+				});
+			});
+		box->boxClosing() | rpl::on_next(
+			std::move(closedCallback),
+			*subscription);
+		return box;
+	}
+	return nullptr;
+}
+
+SearchFromController::SearchFromController(
+	not_null<PeerData*> peer,
+	Fn<void(not_null<PeerData*>)> callback)
+: AddSpecialBoxController(
+	peer,
+	ParticipantsBoxController::Role::Members,
+	AdminDoneCallback(),
+	BannedDoneCallback())
+, _callback(std::move(callback)) {
+	_excludeSelf = false;
+}
+
+void SearchFromController::prepare() {
+	AddSpecialBoxController::prepare();
+	delegate()->peerListSetTitle(tr::lng_search_messages_from());
+	if (const auto megagroup = peer()->asMegagroup()) {
+		if (!delegate()->peerListFindRow(megagroup->id.value)) {
+			delegate()->peerListAppendRow(
+				std::make_unique<PeerListRow>(megagroup));
+			setDescriptionText({});
+			delegate()->peerListRefreshRows();
+		}
+	}
+}
+
+void SearchFromController::rowClicked(not_null<PeerListRow*> row) {
+	if (const auto onstack = base::duplicate(_callback)) {
+		onstack(row->peer());
+	}
+}
+
+} // namespace Dialogs