161 lines
4.6 KiB
C++
161 lines
4.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include <rpl/producer.h>
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#include <rpl/filter.h>
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#include <rpl/then.h>
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#include <rpl/range.h>
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#include "base/observer.h"
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#include "base/flags.h"
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namespace Notify {
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// Generic notifications about updates of some PeerData.
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// You can subscribe to them by Notify::registerPeerObserver().
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// 0x0000FFFFU for general peer updates (valid for any peer).
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// 0xFFFF0000U for specific peer updates (valid for user / chat / channel).
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struct PeerUpdate {
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PeerUpdate(PeerData *updated = nullptr) : peer(updated) {
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}
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PeerData *peer;
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enum class Flag : uint32 {
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None = 0,
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// Common flags
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NameChanged = (1 << 0),
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UsernameChanged = (1 << 1),
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PhotoChanged = (1 << 2),
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AboutChanged = (1 << 3),
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NotificationsEnabled = (1 << 4),
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SharedMediaChanged = (1 << 5),
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MigrationChanged = (1 << 6),
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PinnedChanged = (1 << 7),
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RestrictionReasonChanged = (1 << 8),
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// For chats and channels
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InviteLinkChanged = (1 << 9),
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MembersChanged = (1 << 10),
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AdminsChanged = (1 << 11),
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BannedUsersChanged = (1 << 12),
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UnreadMentionsChanged = (1 << 13),
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// For users
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UserCanShareContact = (1 << 16),
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UserIsContact = (1 << 17),
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UserPhoneChanged = (1 << 18),
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UserIsBlocked = (1 << 19),
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BotCommandsChanged = (1 << 20),
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UserOnlineChanged = (1 << 21),
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BotCanAddToGroups = (1 << 22),
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UserCommonChatsChanged = (1 << 23),
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UserHasCalls = (1 << 24),
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// For chats
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ChatCanEdit = (1 << 16),
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// For channels
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ChannelAmIn = (1 << 16),
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ChannelRightsChanged = (1 << 17),
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ChannelStickersChanged = (1 << 18),
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ChannelPinnedChanged = (1 << 19),
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};
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using Flags = base::flags<Flag>;
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friend inline constexpr auto is_flag_type(Flag) { return true; }
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Flags flags = 0;
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// NameChanged data
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PeerData::NameFirstChars oldNameFirstChars;
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// SharedMediaChanged data
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int32 mediaTypesMask = 0;
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};
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void peerUpdatedDelayed(const PeerUpdate &update);
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inline void peerUpdatedDelayed(PeerData *peer, PeerUpdate::Flags events) {
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PeerUpdate update(peer);
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update.flags = events;
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peerUpdatedDelayed(update);
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}
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void peerUpdatedSendDelayed();
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inline void mediaOverviewUpdated(PeerData *peer, MediaOverviewType type) {
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PeerUpdate update(peer);
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update.flags |= PeerUpdate::Flag::SharedMediaChanged;
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update.mediaTypesMask |= (1 << type);
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peerUpdatedDelayed(update);
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}
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class PeerUpdatedHandler {
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public:
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template <typename Lambda>
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PeerUpdatedHandler(PeerUpdate::Flags events, Lambda &&handler) : _events(events), _handler(std::move(handler)) {
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}
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void operator()(const PeerUpdate &update) const {
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if (update.flags & _events) {
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_handler(update);
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}
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}
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private:
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PeerUpdate::Flags _events;
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base::lambda<void(const PeerUpdate&)> _handler;
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};
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base::Observable<PeerUpdate, PeerUpdatedHandler> &PeerUpdated();
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inline auto PeerUpdateViewer(
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PeerUpdate::Flags flags) {
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return rpl::make_producer<PeerUpdate>([=](
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const auto &consumer) {
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auto lifetime = rpl::lifetime();
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lifetime.make_state<base::Subscription>(
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PeerUpdated().add_subscription({ flags, [=](
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const PeerUpdate &update) {
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consumer.put_next_copy(update);
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}}));
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return lifetime;
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});
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}
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inline auto PeerUpdateViewer(
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not_null<PeerData*> peer,
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PeerUpdate::Flags flags) {
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return PeerUpdateViewer(flags)
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| rpl::filter([=](const PeerUpdate &update) {
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return (update.peer == peer);
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});
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}
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inline auto PeerUpdateValue(
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not_null<PeerData*> peer,
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PeerUpdate::Flags flags) {
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auto initial = PeerUpdate(peer);
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initial.flags = flags;
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return rpl::single(initial)
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| rpl::then(PeerUpdateViewer(peer, flags));
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}
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} // namespace Notify
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