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node_modules/autoprefixer/lib/hacks/align-content.js 3.08 KB
aaac7fed   liuqimichale   add
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  'use strict';
  
  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; }
  
  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  
  function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
  
  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }
  
  var flexSpec = require('./flex-spec');
  var Declaration = require('../declaration');
  
  var AlignContent = function (_Declaration) {
      _inherits(AlignContent, _Declaration);
  
      function AlignContent() {
          _classCallCheck(this, AlignContent);
  
          return _possibleConstructorReturn(this, _Declaration.apply(this, arguments));
      }
  
      /**
       * Change property name for 2012 spec
       */
      AlignContent.prototype.prefixed = function prefixed(prop, prefix) {
          var spec = void 0;
  
          var _flexSpec = flexSpec(prefix);
  
          spec = _flexSpec[0];
          prefix = _flexSpec[1];
  
          if (spec === 2012) {
              return prefix + 'flex-line-pack';
          } else {
              return _Declaration.prototype.prefixed.call(this, prop, prefix);
          }
      };
  
      /**
       * Return property name by final spec
       */
  
  
      AlignContent.prototype.normalize = function normalize() {
          return 'align-content';
      };
  
      /**
       * Change value for 2012 spec and ignore prefix for 2009
       */
  
  
      AlignContent.prototype.set = function set(decl, prefix) {
          var spec = flexSpec(prefix)[0];
          if (spec === 2012) {
              decl.value = AlignContent.oldValues[decl.value] || decl.value;
              return _Declaration.prototype.set.call(this, decl, prefix);
          } else if (spec === 'final') {
              return _Declaration.prototype.set.call(this, decl, prefix);
          }
          return undefined;
      };
  
      return AlignContent;
  }(Declaration);
  
  Object.defineProperty(AlignContent, 'names', {
      enumerable: true,
      writable: true,
      value: ['align-content', 'flex-line-pack']
  });
  Object.defineProperty(AlignContent, 'oldValues', {
      enumerable: true,
      writable: true,
      value: {
          'flex-end': 'end',
          'flex-start': 'start',
          'space-between': 'justify',
          'space-around': 'distribute'
      }
  });
  
  
  module.exports = AlignContent;