goog.provide('webfont.CssClassName');

/**

* Handles sanitization and construction of css class names.
* @param {string=} opt_joinChar The character to join parts of the name on.
*    Defaults to '-'.
* @constructor
*/

webfont.CssClassName = function(opt_joinChar) {

/** @type {string} */
this.joinChar_ = opt_joinChar || webfont.CssClassName.DEFAULT_JOIN_CHAR;

};

/**

* @const
* @type {string}
*/

webfont.CssClassName.DEFAULT_JOIN_CHAR = '-';

goog.scope(function () {

var CssClassName = webfont.CssClassName;

/**
 * Sanitizes a string for use as a css class name. Removes non-word and
 * underscore characters.
 * @param {string} name The string.
 * @return {string} The sanitized string.
 */
CssClassName.prototype.sanitize = function(name) {
  return name.replace(/[\W_]+/g, '').toLowerCase();
};

/**
 * Builds a complete css class name given a variable number of parts.
 * Sanitizes, then joins the parts together.
 * @param {...string} var_args The parts to join.
 * @return {string} The sanitized and joined string.
 */
CssClassName.prototype.build = function(var_args) {
  var parts = []
  for (var i = 0; i < arguments.length; i++) {
    parts.push(this.sanitize(arguments[i]));
  }
  return parts.join(this.joinChar_);
};

});