Arguments Overloading FTW

overloadedArguments.js

/**
 * Converts any input box on a page to a CSS selector search and suggestion box.
 *
 * @constructor
 * @param {nsIDOMDocument} aContentDocument
 *        The content document which inspector is attached to.
 * @param {nsiInputElement|String} aInputNode
 *        The input element or the selector for teh input element to which the
 *        panel will be attached and from where search input will be taken.
 * @param {Object} aOptions
 *        The options provided to the selector. Current available options are:
 *        - TODO
 * @arguments The following combinations of the above three arguments is possible
 *            - (aContentDocument, aInputNode[, aOptions])
 *            - (aContentDocument, String[, aOptions])
 *            - (aInputNode[, aOptions])
 *            - (String[, aOptions])
 */
function SelectorSearch() {
  this.searchBox = (typeof arguments[0] == "string")
                   ? (this.doc = document).querySelector(arguments[0])
                   : (!arguments[0].ownerDocument)
                     ? ((this.doc = arguments[0]) && typeof arguments[1] == "string")
                       ? this.doc.querySelector(arguments[1])
                       : arguments[1]
                     : (this.doc = arguments[0].ownerDocument, arguments[0]);