* @class IriSP.Widget is an "abstract" class. It's mostly used to define some properties common to every widget.

 *

 *  Note that widget constructors are never called directly by the user. Instead, the widgets are instantiated by functions

 *  defined in init.js

 *

 * @constructor

 * @param player - a reference to the player widget

 * @param config - configuration options for the widget

 */

IriSP.Widget = function(player, config) {

    if( typeof player === "undefined") {

        /* Probably an abstract call of the class when

         * individual widgets set their prototype */

        return;

    }

    /* Setting all the configuration options */

    var _type = config.type,

        _config = IriSP._.defaults({}, config, _player.config.gui.default_options, IriSP.widgetsDefaults[_type]),

        _this = this;

    /* Creating containers if needed */

    if (typeof _config.container === "undefined") {

        var _divs = _player.layoutDivs(_type);

        _config.container = _divs[0];

        _config.spacer = _divs[1];

    }

    IriSP._(_config).forEach(function(_value, _key) {

       _this[_key] = _value;

    });

    /* Setting this.player at the end in case it's been overriden

     * by a configuration option of the same name :-(

     */

    this.player = player;

    /* Getting metadata */

    this.source = _player.loadMetadata(this.metadata);

    /* Call draw when loaded */

    this.source.onLoad(function() {

        _this.draw();

    })

    /* Adding classes and html attributes */

    this.selector = IriSP.jQuery(this.container);

    this.selector.addClass("Ldt-TraceMe").addClass("Ldt-Widget").attr("widget-type", _type);

    /* Does the widget require other widgets ? */

    if (typeof this.requires !== "undefined") {

        for (var _i = 0; _i < this.requires.length; _i++) {

            var _subconfig = this.requires[_i],

                _div = IriSP.jQuery('<div>');

            _subconfig.container = IriSP.guid(this.container + '_' + _subconfig.type + '_');

            _div.id = _subconfig.container;

            this.selector.append(_div);

            this[_subconfig.type] = new IriSP.Widgets(_player, _subconfig);

        }

    }

 * This method responsible of drawing a widget on screen.

 */

IriSP.Widget.prototype.draw = function() {

    /* implemented by "sub-classes" */

};

/**

 * Optional method if you want your widget to support redraws.

 */

    /* implemented by "sub-classes" */