src/level.hpp

   1 #ifndef MENUPP_LEVEL_HPP_
   2 #define MENUPP_LEVEL_HPP_
   3
   4 #include "node.hpp"
   5
   6 namespace Menu
   7 {
   8
   9     template<
  10         typename Conf = LevelConf<>,
  11         typename FRead = void(*)(typename Conf::Type),
  12         typename FCallback = void(*)(typename Conf::Type)
  13     >
  14     class Level : public INode
  15     {
  16         NodeId _id;
  17         const char* _label;
  18         typename Conf::Type _value = Conf::dflt;
  19         typename Conf::Type _value_save = Conf::dflt;
  20         FCallback _fc;
  21         FRead _fr;
  22
  23     public:
  24         explicit Level(const char* label, FCallback fc, FRead fr)
  25         : _label(label), _fc(fc), _fr(fr) {}
  26
  27         void set_id(NodeId id) override { _id = id; }
  28
  29         NodeId id() const override { return _id; }
  30
  31         void dump(std::ostream& os, size_t indent, size_t total_indent) const override
  32         {
  33             std::fill_n(std::ostream_iterator<char>(os), total_indent, ' ');
  34             os << "Level" << _id << ": \"" << label() << "\"\n";
  35             std::fill_n(std::ostream_iterator<char>(os), total_indent + indent, ' ');
  36             os << _value << '\n';
  37         }
  38
  39         NodeId move(Move m) override
  40         {
  41             NodeId ret = _id;
  42             switch (m) {
  43                 case Move::Into:
  44                     _value_save = _value;
  45                     _fr(_value);
  46                     break;
  47                 case Move::Up:
  48                     _value = inc<Conf>(_value);
  49                     _fr(_value);
  50                     break;
  51                 case Move::Down:
  52                     _value = dec<Conf>(_value);
  53                     _fr(_value);
  54                     break;
  55                 case Move::Left:
  56                     _value = _value_save;
  57                     ret = _id.parent();
  58                     break;
  59                 case Move::Right:
  60                     _fc(_value);
  61                     ret = _id.parent();
  62                     break;
  63             }
  64             return ret;
  65         }
  66
  67         INode* get(size_t) override { return nullptr; }
  68
  69         const char* label() const override { return _label; }
  70     };
  71
  72 }
  73
  74 #endif // MENUPP_LEVEL_HPP_