declaration.js
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(function() {
var Browsers, Declaration, Prefixer, utils,
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');
Browsers = require('./browsers');
utils = require('./utils');
Declaration = (function(superClass) {
extend(Declaration, superClass);
function Declaration() {
return Declaration.__super__.constructor.apply(this, arguments);
}
Declaration.prototype.check = function(decl) {
return true;
};
Declaration.prototype.prefixed = function(prop, prefix) {
return prefix + prop;
};
Declaration.prototype.normalize = function(prop) {
return prop;
};
Declaration.prototype.otherPrefixes = function(value, prefix) {
var j, len, other, ref;
ref = Browsers.prefixes();
for (j = 0, len = ref.length; j < len; j++) {
other = ref[j];
if (other === prefix) {
continue;
}
if (value.indexOf(other) !== -1) {
return true;
}
}
return false;
};
Declaration.prototype.set = function(decl, prefix) {
decl.prop = this.prefixed(decl.prop, prefix);
return decl;
};
Declaration.prototype.needCascade = function(decl) {
return decl._autoprefixerCascade || (decl._autoprefixerCascade = this.all.options.cascade !== false && decl.raw('before').indexOf('\n') !== -1);
};
Declaration.prototype.maxPrefixed = function(prefixes, decl) {
var j, len, max, prefix;
if (decl._autoprefixerMax) {
return decl._autoprefixerMax;
}
max = 0;
for (j = 0, len = prefixes.length; j < len; j++) {
prefix = prefixes[j];
prefix = utils.removeNote(prefix);
if (prefix.length > max) {
max = prefix.length;
}
}
return decl._autoprefixerMax = max;
};
Declaration.prototype.calcBefore = function(prefixes, decl, prefix) {
var before, diff, i, j, max, ref;
if (prefix == null) {
prefix = '';
}
before = decl.raw('before');
max = this.maxPrefixed(prefixes, decl);
diff = max - utils.removeNote(prefix).length;
for (i = j = 0, ref = diff; 0 <= ref ? j < ref : j > ref; i = 0 <= ref ? ++j : --j) {
before += ' ';
}
return before;
};
Declaration.prototype.restoreBefore = function(decl) {
var lines, min;
lines = decl.raw('before').split("\n");
min = lines[lines.length - 1];
this.all.group(decl).up(function(prefixed) {
var array, last;
array = prefixed.raw('before').split("\n");
last = array[array.length - 1];
if (last.length < min.length) {
return min = last;
}
});
lines[lines.length - 1] = min;
return decl.raws.before = lines.join("\n");
};
Declaration.prototype.insert = function(decl, prefix, prefixes) {
var already, cloned;
cloned = this.set(this.clone(decl), prefix);
if (!cloned) {
return;
}
already = decl.parent.some(function(i) {
return i.prop === cloned.prop && i.value === cloned.value;
});
if (already) {
return;
}
if (this.needCascade(decl)) {
cloned.raws.before = this.calcBefore(prefixes, decl, prefix);
}
return decl.parent.insertBefore(decl, cloned);
};
Declaration.prototype.isAlready = function(decl, prefixed) {
var already;
already = this.all.group(decl).up(function(i) {
return i.prop === prefixed;
});
already || (already = this.all.group(decl).down(function(i) {
return i.prop === prefixed;
}));
return already;
};
Declaration.prototype.add = function(decl, prefix, prefixes) {
var prefixed;
prefixed = this.prefixed(decl.prop, prefix);
if (this.isAlready(decl, prefixed) || this.otherPrefixes(decl.value, prefix)) {
return;
}
return this.insert(decl, prefix, prefixes);
};
Declaration.prototype.process = function(decl) {
var prefixes;
if (this.needCascade(decl)) {
prefixes = Declaration.__super__.process.apply(this, arguments);
if (prefixes != null ? prefixes.length : void 0) {
this.restoreBefore(decl);
return decl.raws.before = this.calcBefore(prefixes, decl);
}
} else {
return Declaration.__super__.process.apply(this, arguments);
}
};
Declaration.prototype.old = function(prop, prefix) {
return [this.prefixed(prop, prefix)];
};
return Declaration;
})(Prefixer);
module.exports = Declaration;
}).call(this);