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Copy pathdialogs_pinned_list.cpp
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178 lines (152 loc) · 4.78 KB
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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_pinned_list.h"
#include "data/data_saved_messages.h"
#include "dialogs/dialogs_key.h"
#include "dialogs/dialogs_entry.h"
#include "history/history.h"
#include "data/data_channel.h"
#include "data/data_session.h"
#include "data/data_forum.h"
namespace Dialogs {
PinnedList::PinnedList(FilterId filterId, int limit)
: _filterId(filterId)
, _limit(limit) {
Expects(limit > 0);
}
void PinnedList::setLimit(int limit) {
Expects(limit > 0);
if (_limit == limit) {
return;
}
_limit = limit;
applyLimit(_limit);
}
void PinnedList::addPinned(Key key) {
Expects(key.entry()->folderKnown());
addPinnedGetPosition(key);
}
int PinnedList::addPinnedGetPosition(Key key) {
const auto already = ranges::find(_data, key);
if (already != end(_data)) {
return already - begin(_data);
}
applyLimit(_limit - 1);
const auto position = int(_data.size());
_data.push_back(key);
key.entry()->cachePinnedIndex(_filterId, position + 1);
return position;
}
void PinnedList::setPinned(Key key, bool pinned) {
Expects(key.entry()->folderKnown() || _filterId != 0);
if (pinned) {
const int position = addPinnedGetPosition(key);
if (position) {
const auto begin = _data.begin();
std::rotate(begin, begin + position, begin + position + 1);
for (auto i = 0; i != position + 1; ++i) {
_data[i].entry()->cachePinnedIndex(_filterId, i + 1);
}
}
} else if (const auto it = ranges::find(_data, key); it != end(_data)) {
const auto index = int(it - begin(_data));
_data.erase(it);
key.entry()->cachePinnedIndex(_filterId, 0);
// cachePinnedIndex() may re-enter and erase from _data (for example
// while a filter is being removed), so re-check the size each
// iteration instead of caching it to avoid an out-of-bounds access.
for (auto i = index; i < int(size(_data)); ++i) {
_data[i].entry()->cachePinnedIndex(_filterId, i + 1);
}
}
}
void PinnedList::applyLimit(int limit) {
Expects(limit >= 0);
while (_data.size() > limit) {
setPinned(_data.back(), false);
}
}
void PinnedList::clear() {
applyLimit(0);
}
void PinnedList::applyList(
not_null<Data::Session*> owner,
const QVector<MTPDialogPeer> &list) {
Expects(this != owner->savedMessages().chatsList()->pinned());
clear();
for (const auto &peer : list) {
peer.match([&](const MTPDdialogPeer &data) {
if (const auto peerId = peerFromMTP(data.vpeer())) {
addPinned(owner->history(peerId));
}
}, [&](const MTPDdialogPeerFolder &data) {
addPinned(owner->folder(data.vfolder_id().v));
}, [&](const MTPDdialogPeerCommunity &data) {
const auto channelId = ChannelId(data.vcommunity_id().v);
if (const auto channel = owner->channelLoaded(channelId)) {
const auto history = owner->history(channel);
if (!history->folderKnown()) {
history->clearFolder();
}
addPinned(history);
}
});
}
}
void PinnedList::applyList(
not_null<Data::SavedMessages*> sublistsOwner,
const QVector<MTPDialogPeer> &list) {
Expects(this == sublistsOwner->chatsList()->pinned());
clear();
for (const auto &peer : list) {
peer.match([&](const MTPDdialogPeer &data) {
if (const auto peerId = peerFromMTP(data.vpeer())) {
const auto peer = sublistsOwner->owner().peer(peerId);
addPinned(sublistsOwner->sublist(peer));
}
}, [](const MTPDdialogPeerFolder &data) {
}, [](const MTPDdialogPeerCommunity &data) {
});
}
}
void PinnedList::applyList(
not_null<Data::Forum*> forum,
const QVector<MTPint> &list) {
Expects(this == forum->topicsList()->pinned());
clear();
for (const auto &topicId : list) {
addPinned(forum->topicFor(topicId.v));
}
}
void PinnedList::applyList(const std::vector<not_null<History*>> &list) {
Expects(_filterId != 0);
const auto old = base::take(_data);
const auto count = int(list.size());
_data.reserve(count);
for (auto i = 0; i != count; ++i) {
const auto history = list[i];
_data.emplace_back(history);
history->cachePinnedIndex(_filterId, i + 1);
}
for (const auto &key : old) {
const auto history = key.history();
if (!history || !ranges::contains(_data, history, &Key::history)) {
key.entry()->cachePinnedIndex(_filterId, 0);
}
}
}
void PinnedList::reorder(Key key1, Key key2) {
const auto index1 = ranges::find(_data, key1) - begin(_data);
const auto index2 = ranges::find(_data, key2) - begin(_data);
Assert(index1 >= 0 && index1 < _data.size());
Assert(index2 >= 0 && index2 < _data.size());
Assert(index1 != index2);
std::swap(_data[index1], _data[index2]);
key1.entry()->cachePinnedIndex(_filterId, index2 + 1);
key2.entry()->cachePinnedIndex(_filterId, index1 + 1);
}
} // namespace Dialogs