lepu-test-platform-web/node_modules/autoprefixer/lib/declaration.js

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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 Prefixer = require('./prefixer');
var Browsers = require('./browsers');
var utils = require('./utils');
var Declaration = function (_Prefixer) {
_inherits(Declaration, _Prefixer);
function Declaration() {
_classCallCheck(this, Declaration);
return _possibleConstructorReturn(this, _Prefixer.apply(this, arguments));
}
/**
* Always true, because we already get prefixer by property name
*/
Declaration.prototype.check = function check() /* decl */{
return true;
};
/**
* Return prefixed version of property
*/
Declaration.prototype.prefixed = function prefixed(prop, prefix) {
return prefix + prop;
};
/**
* Return unprefixed version of property
*/
Declaration.prototype.normalize = function normalize(prop) {
return prop;
};
/**
* Check `value`, that it contain other prefixes, rather than `prefix`
*/
Declaration.prototype.otherPrefixes = function otherPrefixes(value, prefix) {
for (var _iterator = Browsers.prefixes(), _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var other = _ref;
if (other === prefix) {
continue;
}
if (value.indexOf(other) !== -1) {
return true;
}
}
return false;
};
/**
* Set prefix to declaration
*/
Declaration.prototype.set = function set(decl, prefix) {
decl.prop = this.prefixed(decl.prop, prefix);
return decl;
};
/**
* Should we use visual cascade for prefixes
*/
Declaration.prototype.needCascade = function needCascade(decl) {
if (!decl._autoprefixerCascade) {
decl._autoprefixerCascade = this.all.options.cascade !== false && decl.raw('before').indexOf('\n') !== -1;
}
return decl._autoprefixerCascade;
};
/**
* Return maximum length of possible prefixed property
*/
Declaration.prototype.maxPrefixed = function maxPrefixed(prefixes, decl) {
if (decl._autoprefixerMax) {
return decl._autoprefixerMax;
}
var max = 0;
for (var _iterator2 = prefixes, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
var _ref2;
if (_isArray2) {
if (_i2 >= _iterator2.length) break;
_ref2 = _iterator2[_i2++];
} else {
_i2 = _iterator2.next();
if (_i2.done) break;
_ref2 = _i2.value;
}
var prefix = _ref2;
prefix = utils.removeNote(prefix);
if (prefix.length > max) {
max = prefix.length;
}
}
decl._autoprefixerMax = max;
return decl._autoprefixerMax;
};
/**
* Calculate indentation to create visual cascade
*/
Declaration.prototype.calcBefore = function calcBefore(prefixes, decl) {
var prefix = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
var max = this.maxPrefixed(prefixes, decl);
var diff = max - utils.removeNote(prefix).length;
var before = decl.raw('before');
if (diff > 0) {
before += Array(diff).fill(' ').join('');
}
return before;
};
/**
* Remove visual cascade
*/
Declaration.prototype.restoreBefore = function restoreBefore(decl) {
var lines = decl.raw('before').split('\n');
var min = lines[lines.length - 1];
this.all.group(decl).up(function (prefixed) {
var array = prefixed.raw('before').split('\n');
var last = array[array.length - 1];
if (last.length < min.length) {
min = last;
}
});
lines[lines.length - 1] = min;
decl.raws.before = lines.join('\n');
};
/**
* Clone and insert new declaration
*/
Declaration.prototype.insert = function insert(decl, prefix, prefixes) {
var cloned = this.set(this.clone(decl), prefix);
if (!cloned) return undefined;
var already = decl.parent.some(function (i) {
return i.prop === cloned.prop && i.value === cloned.value;
});
if (already) {
return undefined;
}
if (this.needCascade(decl)) {
cloned.raws.before = this.calcBefore(prefixes, decl, prefix);
}
return decl.parent.insertBefore(decl, cloned);
};
/**
* Did this declaration has this prefix above
*/
Declaration.prototype.isAlready = function isAlready(decl, prefixed) {
var already = this.all.group(decl).up(function (i) {
return i.prop === prefixed;
});
if (!already) {
already = this.all.group(decl).down(function (i) {
return i.prop === prefixed;
});
}
return already;
};
/**
* Clone and add prefixes for declaration
*/
Declaration.prototype.add = function add(decl, prefix, prefixes, result) {
var prefixed = this.prefixed(decl.prop, prefix);
if (this.isAlready(decl, prefixed) || this.otherPrefixes(decl.value, prefix)) {
return undefined;
}
return this.insert(decl, prefix, prefixes, result);
};
/**
* Add spaces for visual cascade
*/
Declaration.prototype.process = function process(decl, result) {
if (!this.needCascade(decl)) {
_Prefixer.prototype.process.call(this, decl, result);
return;
}
var prefixes = _Prefixer.prototype.process.call(this, decl, result);
if (!prefixes || !prefixes.length) {
return;
}
this.restoreBefore(decl);
decl.raws.before = this.calcBefore(prefixes, decl);
};
/**
* Return list of prefixed properties to clean old prefixes
*/
Declaration.prototype.old = function old(prop, prefix) {
return [this.prefixed(prop, prefix)];
};
return Declaration;
}(Prefixer);
module.exports = Declaration;