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  1. import {arrayEach} from './array';
  2. export const KEY_CODES = {
  3. MOUSE_LEFT: 1,
  4. MOUSE_RIGHT: 3,
  5. MOUSE_MIDDLE: 2,
  6. BACKSPACE: 8,
  7. COMMA: 188,
  8. INSERT: 45,
  9. DELETE: 46,
  10. END: 35,
  11. ENTER: 13,
  12. ESCAPE: 27,
  13. CONTROL_LEFT: 91,
  14. COMMAND_LEFT: 17,
  15. COMMAND_RIGHT: 93,
  16. ALT: 18,
  17. HOME: 36,
  18. PAGE_DOWN: 34,
  19. PAGE_UP: 33,
  20. PERIOD: 190,
  21. SPACE: 32,
  22. SHIFT: 16,
  23. CAPS_LOCK: 20,
  24. TAB: 9,
  25. ARROW_RIGHT: 39,
  26. ARROW_LEFT: 37,
  27. ARROW_UP: 38,
  28. ARROW_DOWN: 40,
  29. F1: 112,
  30. F2: 113,
  31. F3: 114,
  32. F4: 115,
  33. F5: 116,
  34. F6: 117,
  35. F7: 118,
  36. F8: 119,
  37. F9: 120,
  38. F10: 121,
  39. F11: 122,
  40. F12: 123,
  41. A: 65,
  42. X: 88,
  43. C: 67,
  44. V: 86
  45. };
  46. /**
  47. * Returns true if keyCode represents a printable character.
  48. *
  49. * @param {Number} keyCode
  50. * @returns {Boolean}
  51. */
  52. export function isPrintableChar(keyCode) {
  53. return ((keyCode == 32) || // space
  54. (keyCode >= 48 && keyCode <= 57) || // 0-9
  55. (keyCode >= 96 && keyCode <= 111) || // numpad
  56. (keyCode >= 186 && keyCode <= 192) || // ;=,-./`
  57. (keyCode >= 219 && keyCode <= 222) || // []{}\|"'
  58. keyCode >= 226 || // special chars (229 for Asian chars)
  59. (keyCode >= 65 && keyCode <= 90)); // a-z
  60. }
  61. /**
  62. * @param {Number} keyCode
  63. * @returns {Boolean}
  64. */
  65. export function isMetaKey(keyCode) {
  66. var metaKeys = [
  67. KEY_CODES.ARROW_DOWN,
  68. KEY_CODES.ARROW_UP,
  69. KEY_CODES.ARROW_LEFT,
  70. KEY_CODES.ARROW_RIGHT,
  71. KEY_CODES.HOME,
  72. KEY_CODES.END,
  73. KEY_CODES.DELETE,
  74. KEY_CODES.BACKSPACE,
  75. KEY_CODES.F1,
  76. KEY_CODES.F2,
  77. KEY_CODES.F3,
  78. KEY_CODES.F4,
  79. KEY_CODES.F5,
  80. KEY_CODES.F6,
  81. KEY_CODES.F7,
  82. KEY_CODES.F8,
  83. KEY_CODES.F9,
  84. KEY_CODES.F10,
  85. KEY_CODES.F11,
  86. KEY_CODES.F12,
  87. KEY_CODES.TAB,
  88. KEY_CODES.PAGE_DOWN,
  89. KEY_CODES.PAGE_UP,
  90. KEY_CODES.ENTER,
  91. KEY_CODES.ESCAPE,
  92. KEY_CODES.SHIFT,
  93. KEY_CODES.CAPS_LOCK,
  94. KEY_CODES.ALT
  95. ];
  96. return metaKeys.indexOf(keyCode) !== -1;
  97. }
  98. /**
  99. * @param {Number} keyCode
  100. * @returns {Boolean}
  101. */
  102. export function isCtrlKey(keyCode) {
  103. return [KEY_CODES.CONTROL_LEFT, 224, KEY_CODES.COMMAND_LEFT, KEY_CODES.COMMAND_RIGHT].indexOf(keyCode) !== -1;
  104. }
  105. /**
  106. * @param {Number} keyCode
  107. * @param {String} baseCode
  108. * @returns {Boolean}
  109. */
  110. export function isKey(keyCode, baseCode) {
  111. let keys = baseCode.split('|');
  112. let result = false;
  113. arrayEach(keys, (key) => {
  114. if (keyCode === KEY_CODES[key]) {
  115. result = true;
  116. return false;
  117. }
  118. });
  119. return result;
  120. }