motion/node_modules/motion-tools/.internal/deps/internal/keys.js

motion - moving development forward

var _interopRequireDefault = require('babel-runtime/helpers/interop-require-default').default;

Object.defineProperty(exports, '__esModule', {
  value: true
});

var _keycode = require('keycode');

var _keycode2 = _interopRequireDefault(_keycode);

var keys = {};
exports.keys = keys;
var listeners = {};
var pressListeners = {};

on.keydown(window, function (e) {
  var code = (0, _keycode2.default)(e.keyCode);
  keys[code] = true;
  keyDown(code);
});

on.keyup(window, function (e) {
  var code = (0, _keycode2.default)(e.keyCode);
  keys[code] = false;
  keyUp(code);
});

on.keypress(window, function (e) {
  var code = (0, _keycode2.default)(e.keyCode);
  var queue = pressListeners[code];
  queue && queue.forEach(function (listener) {
    return listener();
  });
});

function keyDown(code) {
  if (!listeners[code]) return;
  listeners[code].forEach(function (listener) {
    return listener(true);
  });
}

function keyUp(code) {
  if (!listeners[code]) return;
  listeners[code].forEach(function (listener) {
    return listener(false);
  });
}

function onKey(code, fn) {
  listeners[code] = listeners[code] || [];
  listeners[code].push(fn);
}

exports.onKey = onKey;

function onKeyPress(code, fn) {
  pressListeners[code] = pressListeners[code] || [];
  pressListeners[code].push(fn);
}

exports.onKeyPress = onKeyPress;

function onKeyDown(code, fn) {
  onKey(code, function (val) {
    return val && fn();
  });
}

exports.onKeyDown = onKeyDown;