124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "dialogs/dialogs_row.h"
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class PeerData;
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namespace Dialogs {
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class List {
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public:
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List(SortMode sortMode);
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List(const List &other) = delete;
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List &operator=(const List &other) = delete;
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int size() const {
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return _count;
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}
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bool isEmpty() const {
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return size() == 0;
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}
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bool contains(Key key) const {
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return _rowByKey.find(key) != _rowByKey.end();
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}
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Row *getRow(Key key) const {
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const auto i = _rowByKey.find(key);
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return (i == _rowByKey.end()) ? nullptr : i->second.get();
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}
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Row *rowAtY(int32 y, int32 h) const {
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auto i = cfind(y, h);
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if (i == cend() || (*i)->pos() != ((y > 0) ? (y / h) : 0)) {
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return nullptr;
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}
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return *i;
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}
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Row *addToEnd(Key key);
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Row *adjustByName(Key key);
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Row *addByName(Key key);
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bool moveToTop(Key key);
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void adjustByPos(Row *row);
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bool del(Key key, Row *replacedBy = nullptr);
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void remove(Row *row);
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void clear();
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class const_iterator {
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public:
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using value_type = Row*;
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using pointer = Row**;
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using reference = Row*&;
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explicit const_iterator(Row *p) : _p(p) {
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}
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inline Row* operator*() const { return _p; }
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inline Row* const* operator->() const { return &_p; }
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inline bool operator==(const const_iterator &other) const { return _p == other._p; }
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inline bool operator!=(const const_iterator &other) const { return !(*this == other); }
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inline const_iterator &operator++() { _p = next(_p); return *this; }
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inline const_iterator operator++(int) { const_iterator result(*this); ++(*this); return result; }
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inline const_iterator &operator--() { _p = prev(_p); return *this; }
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inline const_iterator operator--(int) { const_iterator result(*this); --(*this); return result; }
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inline const_iterator operator+(int j) const { const_iterator result = *this; return result += j; }
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inline const_iterator operator-(int j) const { const_iterator result = *this; return result -= j; }
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inline const_iterator &operator+=(int j) { if (j < 0) return (*this -= (-j)); while (j--) ++*this; return *this; }
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inline const_iterator &operator-=(int j) { if (j < 0) return (*this += (-j)); while (j--) --*this; return *this; }
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private:
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Row *_p;
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friend class List;
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};
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friend class const_iterator;
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using iterator = const_iterator;
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const_iterator cbegin() const { return const_iterator(_begin); }
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const_iterator cend() const { return const_iterator(_end); }
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const_iterator begin() const { return cbegin(); }
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const_iterator end() const { return cend(); }
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iterator begin() { return iterator(_begin); }
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iterator end() { return iterator(_end); }
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const_iterator cfind(Row *value) const { return value ? const_iterator(value) : cend(); }
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const_iterator find(Row *value) const { return cfind(value); }
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iterator find(Row *value) { return value ? iterator(value) : end(); }
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const_iterator cfind(int y, int h) const {
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adjustCurrent(y, h);
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return iterator(_current);
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}
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const_iterator find(int y, int h) const { return cfind(y, h); }
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iterator find(int y, int h) {
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adjustCurrent(y, h);
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return iterator(_current);
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}
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~List();
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private:
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void adjustCurrent(int y, int h) const;
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bool insertBefore(Row *row, Row *before);
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bool insertAfter(Row *row, Row *after);
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static Row *next(Row *row) {
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return row->_next;
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}
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static Row *prev(Row *row) {
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return row->_prev;
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}
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std::unique_ptr<Row> _last;
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Row *_begin;
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Row *_end;
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SortMode _sortMode;
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int _count = 0;
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std::map<Key, not_null<Row*>> _rowByKey;
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mutable Row *_current; // cache
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};
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} // namespace Dialogs
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