tdesktop/Telegram/SourceFiles/observer_peer.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 <rpl/producer.h>
#include <rpl/filter.h>
#include <rpl/then.h>
#include <rpl/range.h>
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#include "base/observer.h"
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#include "base/flags.h"
namespace Notify {
// Generic notifications about updates of some PeerData.
// You can subscribe to them by Notify::registerPeerObserver().
// 0x0000FFFFU for general peer updates (valid for any peer).
// 0xFFFF0000U for specific peer updates (valid for user / chat / channel).
struct PeerUpdate {
PeerUpdate(PeerData *updated = nullptr) : peer(updated) {
}
PeerData *peer;
enum class Flag : uint32 {
None = 0,
// Common flags
NameChanged = (1 << 0),
UsernameChanged = (1 << 1),
PhotoChanged = (1 << 2),
AboutChanged = (1 << 3),
NotificationsEnabled = (1 << 4),
MigrationChanged = (1 << 6),
ChatPinnedChanged = (1 << 7),
UnavailableReasonChanged = (1 << 8),
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UnreadViewChanged = (1 << 9),
PinnedMessageChanged = (1 << 10),
// For chats and channels
InviteLinkChanged = (1 << 11),
MembersChanged = (1 << 12),
AdminsChanged = (1 << 13),
BannedUsersChanged = (1 << 14),
UnreadMentionsChanged = (1 << 15),
RightsChanged = (1 << 16),
// For users
UserCanShareContact = (1 << 17),
UserIsContact = (1 << 18),
UserPhoneChanged = (1 << 19),
UserIsBlocked = (1 << 20),
BotCommandsChanged = (1 << 21),
UserOnlineChanged = (1 << 22),
BotCanAddToGroups = (1 << 23),
UserCommonChatsChanged = (1 << 24),
UserHasCalls = (1 << 25),
UserOccupiedChanged = (1 << 26),
UserSupportInfoChanged = (1 << 27),
// For channels
ChannelAmIn = (1 << 17),
ChannelStickersChanged = (1 << 18),
ChannelPromotedChanged = (1 << 19),
ChannelLinkedChat = (1 << 20),
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ChannelLocation = (1 << 21),
};
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using Flags = base::flags<Flag>;
friend inline constexpr auto is_flag_type(Flag) { return true; }
Flags flags = 0;
// NameChanged data
base::flat_set<QChar> oldNameFirstLetters;
};
void peerUpdatedDelayed(const PeerUpdate &update);
inline void peerUpdatedDelayed(PeerData *peer, PeerUpdate::Flags events) {
PeerUpdate update(peer);
update.flags = events;
peerUpdatedDelayed(update);
}
void peerUpdatedSendDelayed();
class PeerUpdatedHandler {
public:
template <typename Lambda>
PeerUpdatedHandler(PeerUpdate::Flags events, Lambda &&handler) : _events(events), _handler(std::move(handler)) {
}
void operator()(const PeerUpdate &update) const {
if (update.flags & _events) {
_handler(update);
}
}
private:
PeerUpdate::Flags _events;
Fn<void(const PeerUpdate&)> _handler;
};
base::Observable<PeerUpdate, PeerUpdatedHandler> &PeerUpdated();
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rpl::producer<PeerUpdate> PeerUpdateViewer(
PeerUpdate::Flags flags);
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rpl::producer<PeerUpdate> PeerUpdateViewer(
not_null<PeerData*> peer,
PeerUpdate::Flags flags);
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rpl::producer<PeerUpdate> PeerUpdateValue(
not_null<PeerData*> peer,
PeerUpdate::Flags flags);
} // namespace Notify