flex.js 3.6 KB

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  1. "use strict";
  2. function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }
  3. function _createSuper(Derived) { return function () { var Super = _getPrototypeOf(Derived), result; if (_isNativeReflectConstruct()) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  4. function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
  5. function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
  6. function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
  7. function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
  8. function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _defaults(subClass, superClass); }
  9. function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
  10. var list = require('postcss').list;
  11. var flexSpec = require('./flex-spec');
  12. var Declaration = require('../declaration');
  13. var Flex = /*#__PURE__*/function (_Declaration) {
  14. _inheritsLoose(Flex, _Declaration);
  15. var _super = _createSuper(Flex);
  16. function Flex() {
  17. return _Declaration.apply(this, arguments) || this;
  18. }
  19. var _proto = Flex.prototype;
  20. /**
  21. * Change property name for 2009 spec
  22. */
  23. _proto.prefixed = function prefixed(prop, prefix) {
  24. var spec;
  25. var _flexSpec = flexSpec(prefix);
  26. spec = _flexSpec[0];
  27. prefix = _flexSpec[1];
  28. if (spec === 2009) {
  29. return prefix + 'box-flex';
  30. }
  31. return _Declaration.prototype.prefixed.call(this, prop, prefix);
  32. }
  33. /**
  34. * Return property name by final spec
  35. */
  36. ;
  37. _proto.normalize = function normalize() {
  38. return 'flex';
  39. }
  40. /**
  41. * Spec 2009 supports only first argument
  42. * Spec 2012 disallows unitless basis
  43. */
  44. ;
  45. _proto.set = function set(decl, prefix) {
  46. var spec = flexSpec(prefix)[0];
  47. if (spec === 2009) {
  48. decl.value = list.space(decl.value)[0];
  49. decl.value = Flex.oldValues[decl.value] || decl.value;
  50. return _Declaration.prototype.set.call(this, decl, prefix);
  51. }
  52. if (spec === 2012) {
  53. var components = list.space(decl.value);
  54. if (components.length === 3 && components[2] === '0') {
  55. decl.value = components.slice(0, 2).concat('0px').join(' ');
  56. }
  57. }
  58. return _Declaration.prototype.set.call(this, decl, prefix);
  59. };
  60. return Flex;
  61. }(Declaration);
  62. _defineProperty(Flex, "names", ['flex', 'box-flex']);
  63. _defineProperty(Flex, "oldValues", {
  64. auto: '1',
  65. none: '0'
  66. });
  67. module.exports = Flex;