YUI.add('tabview-base', function (Y, NAME) {

var getClassName = Y.ClassNameManager.getClassName,

    TABVIEW = 'tabview',

    TAB = 'tab',

    PANEL = 'panel',

    SELECTED = 'selected',

    EMPTY_OBJ = {},

    DOT = '.',

    TabviewBase = function() {

        this.init.apply(this, arguments);

    };

TabviewBase.NAME = 'tabviewBase';

TabviewBase._classNames = {

    tabview: getClassName(TABVIEW),

    tabviewPanel: getClassName(TABVIEW, PANEL),

    tabviewList: getClassName(TABVIEW, 'list'),

    tab: getClassName(TAB),

    tabLabel: getClassName(TAB, 'label'),

    tabPanel: getClassName(TAB, PANEL),

    selectedTab: getClassName(TAB, SELECTED),

    selectedPanel: getClassName(TAB, PANEL, SELECTED)

};

TabviewBase._queries = {

    tabview: DOT + TabviewBase._classNames.tabview,

    tabviewList: '> ul',

    tab: '> ul > li',

    tabLabel: '> ul > li > a',

    tabviewPanel: '> div',

    tabPanel: '> div > div',

    selectedTab: '> ul > ' + DOT + TabviewBase._classNames.selectedTab,

    selectedPanel: '> div ' + DOT + TabviewBase._classNames.selectedPanel

};

Y.mix(TabviewBase.prototype, {

    init: function(config) {

        config = config || EMPTY_OBJ;

        this._node = config.host || Y.one(config.node);

        this.refresh();

    },

    initClassNames: function(index) {

        var _classNames = Y.TabviewBase._classNames;

        Y.Object.each(Y.TabviewBase._queries, function(query, name) {

            // this === tabview._node

            if (_classNames[name]) {

                var result = this.all(query);

                if (index !== undefined) {

                    result = result.item(index);

                }

                if (result) {

                    result.addClass(_classNames[name]);

                }

            }

        }, this._node);

        this._node.addClass(_classNames.tabview);

    },

    _select: function(index) {

        var _classNames = Y.TabviewBase._classNames,

            _queries = Y.TabviewBase._queries,

            node = this._node,

            oldItem = node.one(_queries.selectedTab),

            oldContent = node.one(_queries.selectedPanel),

            newItem = node.all(_queries.tab).item(index),

            newContent = node.all(_queries.tabPanel).item(index);

        if (oldItem) {

            oldItem.removeClass(_classNames.selectedTab);

        }

        if (oldContent) {

            oldContent.removeClass(_classNames.selectedPanel);

        }

        if (newItem) {

            newItem.addClass(_classNames.selectedTab);

        }

        if (newContent) {

            newContent.addClass(_classNames.selectedPanel);

        }

    },

    initState: function() {

        var _queries = Y.TabviewBase._queries,

            node = this._node,

            activeNode = node.one(_queries.selectedTab),

            activeIndex = activeNode ?

                    node.all(_queries.tab).indexOf(activeNode) : 0;

        this._select(activeIndex);

    },

    // collapse extra space between list-items

    _scrubTextNodes: function() {

        this._node.one(Y.TabviewBase._queries.tabviewList).get('childNodes').each(function(node) {

            if (node.get('nodeType') === 3) { // text node

                node.remove();

            }

        });

    },

    // base renderer only enlivens existing markup

    refresh: function() {

        this._scrubTextNodes();

        this.initClassNames();

        this.initState();

        this.initEvents();

    },

    tabEventName: 'click',

    initEvents: function() {

        // TODO: detach prefix for delegate?

        // this._node.delegate('tabview|' + this.tabEventName),

        this._node.delegate(this.tabEventName,

            this.onTabEvent,

            Y.TabviewBase._queries.tab,

            this

        );

    },

    onTabEvent: function(e) {

        e.preventDefault();

        this._select(this._node.all(Y.TabviewBase._queries.tab).indexOf(e.currentTarget));

    },

    destroy: function() {

        this._node.detach(this.tabEventName);

    }

});

Y.TabviewBase = TabviewBase;

}, '@VERSION@', {"requires": ["node-event-delegate", "classnamemanager"]});