!(function () {
    var i18nStore = {};
    var i18nWidgets = {};
    _.extend(BI, {
        i18nProvider: {
            addWidget: function (widget, i18n) {
                if (!i18nWidgets[widget.getName()]) {
                    i18nWidgets[widget.getName()] = i18n;
                    i18n.widget = widget;
                }
            },
            removeWidget: function (widget) {
                if (i18nWidgets[widget.getName()]) {
                    delete i18nWidgets[widget.getName()];
                }
            }
        },
        changeI18n: function (i18n) {
            if (i18n) {
                i18nStore = i18n;
            }
            BI.each(i18nWidgets, function (widgetName, i18n) {
                i18n.widget.setText(BI.i18nText.apply(null, i18n.args));
            });
        },
        addI18n: function (i18n) {
            BI.extend(i18nStore, i18n);
        },
        i18nText: function (key) {
            var localeText = i18nStore[key] || (BI.i18n && BI.i18n[key]) || "";
            if (!localeText) {
                localeText = key;
            }
            var len = arguments.length;
            if (len > 1) {
                if (localeText.indexOf("{R1}") > -1) {
                    for (var i = 1; i < len; i++) {
                        var key = "{R" + i + "}";
                        localeText = BI.replaceAll(localeText, key, arguments[i] + "");
                    }
                } else {
                    var args = Array.prototype.slice.call(arguments);
                    var count = 1;
                    return BI.replaceAll(localeText, "\\{\\s*\\}", function () {
                        return args[count++] + "";
                    });
                }
            }
            return {
                args: arguments,
                addWidget: function (widget) {
                    BI.i18nProvider.addWidget(widget, this);
                },
                valueOf: function () {
                    return localeText;
                },
                toString: function () {
                    return localeText;
                }
            };
        }
    });
})();