#if defined(Hiro_Keyboard)

Keyboard::State Keyboard::state;

const vector<string> Keyboard::keys = {
  //physical keyboard buttons
  "Escape", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11", "F12",
  "PrintScreen", "ScrollLock", "Pause",
  "Insert", "Delete", "Home", "End", "PageUp", "PageDown",
  "Up", "Down", "Left", "Right",
  "Grave", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "Dash", "Equal", "Backspace",
  "Tab", "CapsLock", "LeftEnter", "LeftShift", "RightShift",
  "LeftControl", "RightControl", "LeftAlt", "RightAlt", "LeftSuper", "RightSuper", "Menu", "Space",
  "OpenBracket", "CloseBracket", "Backslash", "Semicolon", "Apostrophe", "Comma", "Period", "Slash",
  "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
  "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z",
  "NumLock", "Divide", "Multiply", "Subtract", "Add", "RightEnter", "Point",
  "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Zero",

  //group aliases
  "Shift",    //"LeftShift" | "RightShift"
  "Control",  //"LeftControl" | "RightControl"
  "Alt",      //"LeftAlt" | "RightAlt"
  "Super",    //"LeftSuper" | "RightSuper"
  "Enter",    //"LeftEnter" | "RightEnter"
};

auto Keyboard::append(sHotkey hotkey) -> void {
  state.hotkeys.append(hotkey);
}

auto Keyboard::hotkey(unsigned position) -> Hotkey {
  if(position < hotkeys()) return state.hotkeys[position];
  return {};
}

auto Keyboard::hotkeys() -> unsigned {
  return state.hotkeys.size();
}

auto Keyboard::poll() -> vector<bool> {
  auto pressed = pKeyboard::poll();

  for(auto& hotkey : state.hotkeys) {
    bool active = hotkey->state.sequence.size() > 0;
    for(auto& key : hotkey->state.keys) {
      if(pressed[key]) continue;
      active = false;
      break;
    }
    if(auto parent = hotkey->state.parent.acquire()) {
      //todo: set active = false if parent no longer exists
      active &= parent->focused();
    }
    if(hotkey->state.active != active) {
      hotkey->state.active = active;
      if( active) hotkey->doPress();
      if(!active) hotkey->doRelease();
    }
  }

  return pressed;
}

auto Keyboard::pressed(const string& key) -> bool {
  if(auto code = keys.find(key)) return pKeyboard::pressed(*code);
  return false;
}

auto Keyboard::released(const string& key) -> bool {
  return !pressed(key);
}

auto Keyboard::remove(sHotkey hotkey) -> void {
  if(auto offset = state.hotkeys.find(hotkey)) {
    state.hotkeys.remove(*offset);
  }
}

#endif