electron-text-substitutions/lib/keyboard-utils.js

Substitute text in an input field based on OS X System Preferences

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isUndoRedoEvent = isUndoRedoEvent;
exports.isBackspaceEvent = isBackspaceEvent;
var keyCodes = {
  y: 89,
  z: 90,
  Z: 122,
  backspace: 8,
  delete: 46
};

/**
 * Returns true if this `keydown` event will trigger an undo or redo operation.
 *
 * @param  {Number} {keyCode  The key code from the event
 * @param  {Bool} metaKey     True if the `meta` key was pressed
 * @param  {Bool} ctrlKey     True if the `ctrl` key was pressed
 * @param  {Bool} shiftKey    True if the `shift` key was pressed
 * @param  {Bool} altKey}     True if the `alt` key was pressed
 * @return {Bool}             Whether or not this event will trigger an undo or redo
 */
function isUndoRedoEvent(_ref) {
  var keyCode = _ref.keyCode,
      metaKey = _ref.metaKey,
      ctrlKey = _ref.ctrlKey,
      shiftKey = _ref.shiftKey,
      altKey = _ref.altKey;

  if (process.platform === 'darwin') {
    return metaKey && !ctrlKey && !altKey && (keyCode === keyCodes.z || keyCode === keyCodes.Z);
  } else {
    return ctrlKey && !metaKey && !shiftKey && !altKey && (keyCode === keyCodes.z || keyCode === keyCodes.y);
  }
}

/**
 * Returns true if this event is a backspace or delete key press.
 *
 * @param  {Number} {keyCode} The key code from the event
 * @return {Bool}             True if backspace or delete was pressed
 */
function isBackspaceEvent(_ref2) {
  var keyCode = _ref2.keyCode;

  return keyCode === keyCodes.backspace || keyCode === keyCodes.delete;
}