/* Definition of an ancestor for the Widget classes */

if (typeof IriSP.Widgets === "undefined") {

    IriSP.Widgets = {}

}

/**

 * @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.Widgets.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, this.defaults),

        _this = this;

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

       _this[_key] = _value;

    });

    if (typeof this.width === "undefined") {

        this.width = player.config.gui.width;

    }

    /* 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.$ = IriSP.jQuery('#' + this.container);

    this.$.addClass("Ldt-TraceMe 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];

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

            this.$.append(IriSP.jQuery('<div>').attr("id",_subconfig.container));

            this.player.loadWidget(_subconfig, function(_widget) {

                _this[_subconfig.type.replace(/^./,function(_s){return _s.toLowerCase();})] = _widget

            });

        }

    }

    this.l10n = (

        typeof this.messages[IriSP.language] !== "undefined"

        ? this.messages[IriSP.language]

        : (

            IriSP.language.length > 2 && typeof this.messages[IriSP.language.substr(0,2)] !== "undefined"

            ? this.messages[IriSP.language.substr(0,2)]

            : this.messages["en"]

        )

    );

};

IriSP.Widgets.Widget.prototype.defaults = {}

IriSP.Widgets.Widget.prototype.template = '';

IriSP.Widgets.Widget.prototype.messages = {"en":{}};

IriSP.Widgets.Widget.prototype.templateToHtml = function(_template) {

    return Mustache.to_html(_template, this);

}

IriSP.Widgets.Widget.prototype.renderTemplate = function() {

    this.$.append(this.templateToHtml(this.template));

}

IriSP.Widgets.Widget.prototype.functionWrapper = function(_name) {

    var _this = this,

        _function = this[_name];

    if (typeof _function !== "undefined") {

        return function() {

            return _function.apply(_this, Array.prototype.slice.call(arguments, 0));

        }

    } else {

        console.log("Error, Unknown function IriSP." + this.type + "." + _name)

    }

}

IriSP.Widgets.Widget.prototype.bindPopcorn = function(_popcornEvent, _functionName) {

    this.player.popcorn.listen(_popcornEvent, this.functionWrapper(_functionName))

}

IriSP.Widgets.Widget.prototype.getWidgetAnnotations = function() {

    var _curmedia = this.source.currentMedia;

    return typeof this.annotation_type !== "undefined" && this.annotation_type ? _curmedia.getAnnotationsByTypeTitle(this.annotation_type) : _curmedia.getAnnotations();

}

/**

 * This method responsible of drawing a widget on screen.

 */

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

    /* implemented by "sub-classes" */

};