transition.js
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(function() {
var Transition, list, parser, vendor;
parser = require('postcss-value-parser');
vendor = require('postcss/lib/vendor');
list = require('postcss/lib/list');
Transition = (function() {
function Transition(prefixes) {
this.prefixes = prefixes;
}
Transition.prototype.props = ['transition', 'transition-property'];
Transition.prototype.add = function(decl, result) {
var added, declPrefixes, j, k, l, len, len1, len2, names, operaClean, param, params, prefix, prefixValue, prefixed, prefixer, prop, ref, ref1, value, webkitClean;
declPrefixes = ((ref = this.prefixes.add[decl.prop]) != null ? ref.prefixes : void 0) || [];
params = this.parse(decl.value);
names = params.map((function(_this) {
return function(i) {
return _this.findProp(i);
};
})(this));
added = [];
if (names.some(function(i) {
return i[0] === '-';
})) {
return;
}
for (j = 0, len = params.length; j < len; j++) {
param = params[j];
prop = this.findProp(param);
if (prop[0] === '-') {
continue;
}
prefixer = this.prefixes.add[prop];
if (!(prefixer != null ? prefixer.prefixes : void 0)) {
continue;
}
ref1 = prefixer.prefixes;
for (k = 0, len1 = ref1.length; k < len1; k++) {
prefix = ref1[k];
prefixed = this.prefixes.prefixed(prop, prefix);
if (prefixed !== '-ms-transform' && names.indexOf(prefixed) === -1) {
if (!this.disabled(prop, prefix)) {
added.push(this.clone(prop, prefixed, param));
}
}
}
}
params = params.concat(added);
value = this.stringify(params);
webkitClean = this.stringify(this.cleanFromUnprefixed(params, '-webkit-'));
if (declPrefixes.indexOf('-webkit-') !== -1) {
this.cloneBefore(decl, '-webkit-' + decl.prop, webkitClean);
}
this.cloneBefore(decl, decl.prop, webkitClean);
if (declPrefixes.indexOf('-o-') !== -1) {
operaClean = this.stringify(this.cleanFromUnprefixed(params, '-o-'));
this.cloneBefore(decl, '-o-' + decl.prop, operaClean);
}
for (l = 0, len2 = declPrefixes.length; l < len2; l++) {
prefix = declPrefixes[l];
if (prefix !== '-webkit-' && prefix !== '-o-') {
prefixValue = this.stringify(this.cleanOtherPrefixes(params, prefix));
this.cloneBefore(decl, prefix + decl.prop, prefixValue);
}
}
if (value !== decl.value && !this.already(decl, decl.prop, value)) {
this.checkForWarning(result, decl);
decl.cloneBefore();
return decl.value = value;
}
};
Transition.prototype.findProp = function(param) {
var i, j, len, prop, token;
prop = param[0].value;
if (/^\d/.test(prop)) {
for (i = j = 0, len = param.length; j < len; i = ++j) {
token = param[i];
if (i !== 0 && token.type === 'word') {
return token.value;
}
}
}
return prop;
};
Transition.prototype.already = function(decl, prop, value) {
return decl.parent.some(function(i) {
return i.prop === prop && i.value === value;
});
};
Transition.prototype.cloneBefore = function(decl, prop, value) {
if (!this.already(decl, prop, value)) {
return decl.cloneBefore({
prop: prop,
value: value
});
}
};
Transition.prototype.checkForWarning = function(result, decl) {
if (decl.prop === 'transition-property') {
return decl.parent.each(function(i) {
if (i.type !== 'decl') {
return;
}
if (i.prop.indexOf('transition-') !== 0) {
return;
}
if (i.prop === 'transition-property') {
return;
}
if (list.comma(i.value).length > 1) {
decl.warn(result, 'Replace transition-property to transition, ' + 'because Autoprefixer could not support ' + 'any cases of transition-property ' + 'and other transition-*');
}
return false;
});
}
};
Transition.prototype.remove = function(decl) {
var double, params, smaller, value;
params = this.parse(decl.value);
params = params.filter((function(_this) {
return function(i) {
var ref;
return !((ref = _this.prefixes.remove[_this.findProp(i)]) != null ? ref.remove : void 0);
};
})(this));
value = this.stringify(params);
if (decl.value === value) {
return;
}
if (params.length === 0) {
decl.remove();
return;
}
double = decl.parent.some(function(i) {
return i.prop === decl.prop && i.value === value;
});
smaller = decl.parent.some(function(i) {
return i !== decl && i.prop === decl.prop && i.value.length > value.length;
});
if (double || smaller) {
return decl.remove();
} else {
return decl.value = value;
}
};
Transition.prototype.parse = function(value) {
var ast, j, len, node, param, ref, result;
ast = parser(value);
result = [];
param = [];
ref = ast.nodes;
for (j = 0, len = ref.length; j < len; j++) {
node = ref[j];
param.push(node);
if (node.type === 'div' && node.value === ',') {
result.push(param);
param = [];
}
}
result.push(param);
return result.filter(function(i) {
return i.length > 0;
});
};
Transition.prototype.stringify = function(params) {
var j, len, nodes, param;
if (params.length === 0) {
return '';
}
nodes = [];
for (j = 0, len = params.length; j < len; j++) {
param = params[j];
if (param[param.length - 1].type !== 'div') {
param.push(this.div(params));
}
nodes = nodes.concat(param);
}
if (nodes[0].type === 'div') {
nodes = nodes.slice(1);
}
if (nodes[nodes.length - 1].type === 'div') {
nodes = nodes.slice(0, -1);
}
return parser.stringify({
nodes: nodes
});
};
Transition.prototype.clone = function(origin, name, param) {
var changed, i, j, len, result;
result = [];
changed = false;
for (j = 0, len = param.length; j < len; j++) {
i = param[j];
if (!changed && i.type === 'word' && i.value === origin) {
result.push({
type: 'word',
value: name
});
changed = true;
} else {
result.push(i);
}
}
return result;
};
Transition.prototype.div = function(params) {
var j, k, len, len1, node, param;
for (j = 0, len = params.length; j < len; j++) {
param = params[j];
for (k = 0, len1 = param.length; k < len1; k++) {
node = param[k];
if (node.type === 'div' && node.value === ',') {
return node;
}
}
}
return {
type: 'div',
value: ',',
after: ' '
};
};
Transition.prototype.cleanOtherPrefixes = function(params, prefix) {
return params.filter((function(_this) {
return function(param) {
var current;
current = vendor.prefix(_this.findProp(param));
return current === '' || current === prefix;
};
})(this));
};
Transition.prototype.cleanFromUnprefixed = function(params, prefix) {
var j, len, p, param, prop, remove, result;
result = [];
remove = params.map((function(_this) {
return function(i) {
return _this.findProp(i);
};
})(this)).filter(function(i) {
return i.slice(0, prefix.length) === prefix;
}).map((function(_this) {
return function(i) {
return _this.prefixes.unprefixed(i);
};
})(this));
for (j = 0, len = params.length; j < len; j++) {
param = params[j];
prop = this.findProp(param);
p = vendor.prefix(prop);
if (remove.indexOf(prop) === -1 && (p === prefix || p === '')) {
result.push(param);
}
}
return result;
};
Transition.prototype.disabled = function(prop, prefix) {
var other;
other = ['order', 'justify-content', 'align-self', 'align-content'];
if (prop.indexOf('flex') !== -1 || other.indexOf(prop) !== -1) {
if (this.prefixes.options.flexbox === false) {
return true;
} else if (this.prefixes.options.flexbox === 'no-2009') {
return prefix.indexOf('2009') !== -1;
}
}
};
return Transition;
})();
module.exports = Transition;
}).call(this);