value.js
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(function() {
var OldValue, Prefixer, Value, utils, vendor,
extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
hasProp = {}.hasOwnProperty;
Prefixer = require('./prefixer');
OldValue = require('./old-value');
utils = require('./utils');
vendor = require('postcss/lib/vendor');
Value = (function(superClass) {
extend(Value, superClass);
function Value() {
return Value.__super__.constructor.apply(this, arguments);
}
Value.save = function(prefixes, decl) {
var already, cloned, prefix, prefixed, prop, propPrefix, ref, results, rule, trimmed, value;
prop = decl.prop;
ref = decl._autoprefixerValues;
results = [];
for (prefix in ref) {
value = ref[prefix];
if (value === decl.value) {
continue;
}
propPrefix = vendor.prefix(prop);
if (propPrefix === prefix) {
results.push(decl.value = value);
} else if (propPrefix === '-pie-') {
continue;
} else {
prefixed = prefixes.prefixed(prop, prefix);
rule = decl.parent;
if (rule.every(function(i) {
return i.prop !== prefixed;
})) {
trimmed = value.replace(/\s+/, ' ');
already = rule.some(function(i) {
return i.prop === decl.prop && i.value.replace(/\s+/, ' ') === trimmed;
});
if (!already) {
cloned = this.clone(decl, {
value: value
});
results.push(decl.parent.insertBefore(decl, cloned));
} else {
results.push(void 0);
}
} else {
results.push(void 0);
}
}
}
return results;
};
Value.prototype.check = function(decl) {
var value;
value = decl.value;
if (value.indexOf(this.name) !== -1) {
return !!value.match(this.regexp());
} else {
return false;
}
};
Value.prototype.regexp = function() {
return this.regexpCache || (this.regexpCache = utils.regexp(this.name));
};
Value.prototype.replace = function(string, prefix) {
return string.replace(this.regexp(), '$1' + prefix + '$2');
};
Value.prototype.value = function(decl) {
if (decl.raws.value && decl.raws.value.value === decl.value) {
return decl.raws.value.raw;
} else {
return decl.value;
}
};
Value.prototype.add = function(decl, prefix) {
var value;
decl._autoprefixerValues || (decl._autoprefixerValues = {});
value = decl._autoprefixerValues[prefix] || this.value(decl);
value = this.replace(value, prefix);
if (value) {
return decl._autoprefixerValues[prefix] = value;
}
};
Value.prototype.old = function(prefix) {
return new OldValue(this.name, prefix + this.name);
};
return Value;
})(Prefixer);
module.exports = Value;
}).call(this);