cmsdefine(['CMS/EventHub', 'CMS/NavigationBlocker', 'jQuery'], function (EventHub, NavigationBlocker, $) {
    'use strict';

    var history = [],
        $tabItems,
        navigationBlocker = new NavigationBlocker(),

        getHistory = function (steps) {
            var h = history;
            if (h.length > steps) {
                return h[h.length - steps - 1];
            }

            return null;
        },
        back = function (steps) {
            var h = history;
            if (h.length > steps) {
                var p = h[h.length - steps - 1];
                redir(p.url, p.target, p.useIFrame, true);

                return p.url;
            }

            return null;
        },
        redir = function (url, target, useIFrame, noRefresh) {
            if (navigationBlocker.canNavigate()) {
                if (url != '') {
                    if ((target == '_blank') || (target == '_new')) {
                        window.open(url);
                    } else if (target == '_self') {
                        this.location.href = url;
                    } else if (target != '') {
                        var frame;

                        if (useIFrame) {
                            frame = frames[target];
                        } else {
                            if (parent && parent.frames) {
                                frame = parent.frames[target];
                            }
                        }

                        try {
                            if (!frame || (frame.CheckChanges && !frame.CheckChanges())) {
                                return false;
                            }
                        } catch (ex) {
                            // When not a web page
                        }

                        var oldUrl = frame.location.href;

                        if (url.substr(0, 1) == '/') {
                            oldUrl = "/" + oldUrl.replace(/^(?:\/\/|[^\/]+)*\//, "");
                        }

                        if (!noRefresh || (oldUrl != url)) {
                            if (useIFrame && window.Loader) {
                                var fr = $('iframe[name="' + target + '"]');
                                if (window.Loader) {
                                    window.Loader.show(fr);
                                }
                            }
                            frame.location.href = url;
                        }

                        if (typeof (frame.focus) == 'function') {
                            frame.focus();
                        }
                    } else {
                        parent.location.href = url;
                    }

                    history.push({
                        url: url,
                        target: target,
                        useIFrame: useIFrame
                    });

                    return true;
                }

                return true;
            } else {
                return false;
            }
        },
        selTab = function (i, clientId, p, text) {
            var tabItems = $('#' + clientId).find('li');
            tabItems.removeClass('active');

            var disabledGroupd = tabItems.find("a[data-toggle='collapse-disabled']");
            disabledGroupd.attr('data-toggle', 'collapse');

            var name = p + 'TabItem_' + i;

            var tab = $('#' + name);
            if (tab != null) {
                tab.addClass('active');

                var group = tab.parents('li').find("a[data-toggle='collapse']");
                group.attr('data-toggle', 'collapse-disabled');
            }

            var tabTitle = $('#' + name + ' > a > .tab-title');
            if (tabTitle != null) {
                tabTitle.text(text);
            }
        },
        tabs = function (initScript) {
            this.selTab = selTab;
            this.redir = redir;
            this.back = back;
            this.getHistory = getHistory;

            window.Tabs = this;

            if (initScript != null) {
                new Function(initScript)();
            }

            $tabItems = $('.nav-tabs-container-horizontal li');

            EventHub.subscribe("GlobalClick", function () {
                $tabItems.removeClass('open');
            });
        };

    return tabs;
});