tdesktop/Telegram/SourceFiles/dialogs/dialogs_list.cpp

149 lines
3.6 KiB
C++

/*
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_list.h"
#include "dialogs/dialogs_entry.h"
#include "dialogs/dialogs_layout.h"
#include "data/data_session.h"
#include "mainwidget.h"
namespace Dialogs {
List::List(SortMode sortMode) : _sortMode(sortMode) {
}
List::const_iterator List::cfind(Row *value) const {
return value
? (cbegin() + value->pos())
: cend();
}
not_null<Row*> List::addToEnd(Key key) {
if (const auto result = getRow(key)) {
return result;
}
const auto result = _rowByKey.emplace(
key,
std::make_unique<Row>(key, _rows.size())
).first->second.get();
_rows.emplace_back(result);
if (_sortMode == SortMode::Date) {
adjustByDate(result);
}
return result;
}
Row *List::adjustByName(Key key) {
Expects(_sortMode == SortMode::Name);
const auto row = getRow(key);
if (!row) {
return nullptr;
}
adjustByName(row);
return row;
}
not_null<Row*> List::addByName(Key key) {
Expects(_sortMode == SortMode::Name);
const auto row = addToEnd(key);
adjustByName(key);
return row;
}
void List::adjustByName(not_null<Row*> row) {
Expects(row->pos() >= 0 && row->pos() < _rows.size());
const auto &name = row->entry()->chatListName();
const auto index = row->pos();
const auto i = _rows.begin() + index;
const auto before = std::find_if(i + 1, _rows.end(), [&](Row *row) {
const auto &greater = row->entry()->chatListName();
return greater.compare(name, Qt::CaseInsensitive) >= 0;
});
if (before != i + 1) {
rotate(i, i + 1, before);
} else if (i != _rows.begin()) {
const auto from = std::make_reverse_iterator(i);
const auto after = std::find_if(from, _rows.rend(), [&](Row *row) {
const auto &less = row->entry()->chatListName();
return less.compare(name, Qt::CaseInsensitive) <= 0;
}).base();
if (after != i) {
rotate(after, i, i + 1);
}
}
}
void List::adjustByDate(not_null<Row*> row) {
Expects(_sortMode == SortMode::Date);
const auto key = row->sortKey();
const auto index = row->pos();
const auto i = _rows.begin() + index;
const auto before = std::find_if(i + 1, _rows.end(), [&](Row *row) {
return (row->sortKey() <= key);
});
if (before != i + 1) {
rotate(i, i + 1, before);
} else {
const auto from = std::make_reverse_iterator(i);
const auto after = std::find_if(from, _rows.rend(), [&](Row *row) {
return (row->sortKey() >= key);
}).base();
if (after != i) {
rotate(after, i, i + 1);
}
}
}
bool List::moveToTop(Key key) {
const auto i = _rowByKey.find(key);
if (i == _rowByKey.cend()) {
return false;
}
const auto index = i->second->pos();
const auto begin = _rows.begin();
rotate(begin, begin + index, begin + index + 1);
return true;
}
void List::rotate(
std::vector<not_null<Row*>>::iterator first,
std::vector<not_null<Row*>>::iterator middle,
std::vector<not_null<Row*>>::iterator last) {
std::rotate(first, middle, last);
auto count = (last - first);
auto index = (first - _rows.begin());
while (count--) {
(*first++)->_pos = index++;
}
}
bool List::del(Key key, Row *replacedBy) {
auto i = _rowByKey.find(key);
if (i == _rowByKey.cend()) {
return false;
}
const auto row = i->second.get();
row->entry()->owner().dialogsRowReplaced({ row, replacedBy });
const auto index = row->pos();
_rows.erase(_rows.begin() + index);
for (auto i = index, count = int(_rows.size()); i != count; ++i) {
_rows[i]->_pos = i;
}
_rowByKey.erase(i);
return true;
}
} // namespace Dialogs