Improve sorting by online in info profile.

Telegram/SourceFiles/boxes/peer_list_box.h

@@ -399,6 +399,7 @@ public:
 			callback(searchEntity.second.begin(), searchEntity.second.end());
 		}
 		refreshIndices();
+		update();
 	}
 
 	rpl::producer<Ui::ScrollToRequest> scrollToRequests() const {

Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp

@@ -61,11 +61,20 @@ void ChatMembersController::prepare() {
 	if (!delegate()->peerListFullRowsCount()) {
 		Auth().api().requestFullPeer(_chat);
 	}
+	using UpdateFlag = Notify::PeerUpdate::Flag;
 	subscribe(Notify::PeerUpdated(), Notify::PeerUpdatedHandler(
-		Notify::PeerUpdate::Flag::MembersChanged,
+		UpdateFlag::MembersChanged | UpdateFlag::UserOnlineChanged,
 		[this](const Notify::PeerUpdate &update) {
-			if (update.peer == _chat) {
+			if (update.flags & UpdateFlag::MembersChanged) {
-				rebuildRows();
+				if (update.peer == _chat) {
+					rebuildRows();
+				}
+			} else if (update.flags & UpdateFlag::UserOnlineChanged) {
+				auto now = unixtime();
+				delegate()->peerListSortRows([now](const PeerListRow &a, const PeerListRow &b) {
+					return App::onlineForSort(a.peer()->asUser(), now) >
+						App::onlineForSort(b.peer()->asUser(), now);
+				});
 			}
 		}));
 }

Telegram/SourceFiles/profile/profile_channel_controllers.cpp

@@ -28,6 +28,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "apiwrap.h"
 #include "lang/lang_keys.h"
 #include "mainwidget.h"
+#include "observer_peer.h"
 #include "dialogs/dialogs_indexed_list.h"
 
 namespace Profile {
@@ -35,16 +36,56 @@ namespace {
 
 constexpr auto kParticipantsFirstPageCount = 16;
 constexpr auto kParticipantsPerPage = 200;
+constexpr auto kSortByOnlineDelay = TimeMs(1000);
 
 } // namespace
 
-ParticipantsBoxController::ParticipantsBoxController(not_null<ChannelData*> channel, Role role)
+ParticipantsBoxController::ParticipantsBoxController(
+	not_null<ChannelData*> channel,
+	Role role)
 : PeerListController(CreateSearchController(channel, role, &_additional))
 , _channel(channel)
 , _role(role) {
 	if (_channel->mgInfo) {
 		_additional.creator = _channel->mgInfo->creator;
 	}
+	if (_role == Role::Profile) {
+		setupSortByOnline();
+	}
+}
+
+void ParticipantsBoxController::setupSortByOnline() {
+	_sortByOnlineTimer.setCallback([this] { sortByOnline(); });
+	using UpdateFlag = Notify::PeerUpdate::Flag;
+	subscribe(Notify::PeerUpdated(), Notify::PeerUpdatedHandler(
+		UpdateFlag::UserOnlineChanged,
+		[this](const Notify::PeerUpdate &update) {
+			if (auto row = delegate()->peerListFindRow(
+					update.peer->id)) {
+				row->refreshStatus();
+				sortByOnlineDelayed();
+			}
+		}));
+}
+
+void ParticipantsBoxController::sortByOnlineDelayed() {
+	if (!_sortByOnlineTimer.isActive()) {
+		_sortByOnlineTimer.callOnce(kSortByOnlineDelay);
+	}
+}
+
+void ParticipantsBoxController::sortByOnline() {
+	if (_role != Role::Profile
+		|| _channel->membersCount() > Global::ChatSizeMax()) {
+		return;
+	}
+	auto now = unixtime();
+	delegate()->peerListSortRows([now](
+		const PeerListRow &a,
+		const PeerListRow &b) {
+		return App::onlineForSort(a.peer()->asUser(), now) >
+			App::onlineForSort(b.peer()->asUser(), now);
+	});
 }
 
 std::unique_ptr<PeerListSearchController>
@@ -278,6 +319,7 @@ void ParticipantsBoxController::loadMoreRows() {
 				});
 			}
 		}
+		sortByOnline();
 		delegate()->peerListRefreshRows();
 	}).fail([this](const RPCError &error) {
 		_loadRequestId = 0;
@@ -327,6 +369,7 @@ bool ParticipantsBoxController::feedMegagroupLastParticipants() {
 		appendRow(user);
 		++_offset;
 	}
+	sortByOnline();
 	return true;
 }
 

Telegram/SourceFiles/profile/profile_channel_controllers.h

@@ -22,6 +22,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 #include "boxes/peer_list_box.h"
 #include "mtproto/sender.h"
+#include "base/timer.h"
 #include "base/weak_unique_ptr.h"
 
 namespace Profile {
@@ -76,6 +77,9 @@ protected:
 private:
 	static std::unique_ptr<PeerListSearchController> CreateSearchController(not_null<ChannelData*> channel, Role role, not_null<Additional*> additional);
 
+	void setupSortByOnline();
+	void sortByOnlineDelayed();
+	void sortByOnline();
 	void showAdmin(not_null<UserData*> user);
 	void editAdminDone(not_null<UserData*> user, const MTPChannelAdminRights &rights);
 	void showRestricted(not_null<UserData*> user);
@@ -98,6 +102,8 @@ private:
 	QPointer<BoxContent> _editBox;
 	QPointer<PeerListBox> _addBox;
 
+	base::Timer _sortByOnlineTimer;
+
 };
 
 // Members, banned and restricted users server side search.