/*

YUI 3.10.3 (build 2fb5187)

Copyright 2013 Yahoo! Inc. All rights reserved.

Licensed under the BSD License.

http://yuilibrary.com/license/

*/

YUI.add('widget-stdmod', function (Y, NAME) {

/**

 * Provides standard module support for Widgets through an extension.

 *

 * @module widget-stdmod

 */

    var L = Y.Lang,

        Node = Y.Node,

        UA = Y.UA,

        Widget = Y.Widget,

        EMPTY = "",

        HD = "hd",

        BD = "bd",

        FT = "ft",

        HEADER = "header",

        BODY = "body",

        FOOTER = "footer",

        FILL_HEIGHT = "fillHeight",

        STDMOD = "stdmod",

        NODE_SUFFIX = "Node",

        CONTENT_SUFFIX = "Content",

        FIRST_CHILD = "firstChild",

        CHILD_NODES = "childNodes",

        OWNER_DOCUMENT = "ownerDocument",

        CONTENT_BOX = "contentBox",

        HEIGHT = "height",

        OFFSET_HEIGHT = "offsetHeight",

        AUTO = "auto",

        HeaderChange = "headerContentChange",

        BodyChange = "bodyContentChange",

        FooterChange = "footerContentChange",

        FillHeightChange = "fillHeightChange",

        HeightChange = "heightChange",

        ContentUpdate = "contentUpdate",

        RENDERUI = "renderUI",

        BINDUI = "bindUI",

        SYNCUI = "syncUI",

        APPLY_PARSED_CONFIG = "_applyParsedConfig",

        UI = Y.Widget.UI_SRC;

    /**

     * Widget extension, which can be used to add Standard Module support to the

     * base Widget class, through the <a href="Base.html#method_build">Base.build</a>

     * method.

     * <p>

     * The extension adds header, body and footer sections to the Widget's content box and

     * provides the corresponding methods and attributes to modify the contents of these sections.

     * </p>

     * @class WidgetStdMod

     * @param {Object} The user configuration object

     */

    function StdMod(config) {

        this._stdModNode = this.get(CONTENT_BOX);

        Y.before(this._renderUIStdMod, this, RENDERUI);

        Y.before(this._bindUIStdMod, this, BINDUI);

        Y.before(this._syncUIStdMod, this, SYNCUI);

    }

    /**

     * Constant used to refer the the standard module header, in methods which expect a section specifier

     *

     * @property HEADER

     * @static

     * @type String

     */

    StdMod.HEADER = HEADER;

    /**

     * Constant used to refer the the standard module body, in methods which expect a section specifier

     *

     * @property BODY

     * @static

     * @type String

     */

    StdMod.BODY = BODY;

    /**

     * Constant used to refer the the standard module footer, in methods which expect a section specifier

     *

     * @property FOOTER

     * @static

     * @type String

     */

    StdMod.FOOTER = FOOTER;

    /**

     * Constant used to specify insertion position, when adding content to sections of the standard module in

     * methods which expect a "where" argument.

     * <p>

     * Inserts new content <em>before</em> the sections existing content.

     * </p>

     * @property AFTER

     * @static

     * @type String

     */

    StdMod.AFTER = "after";

    /**

     * Constant used to specify insertion position, when adding content to sections of the standard module in

     * methods which expect a "where" argument.

     * <p>

     * Inserts new content <em>before</em> the sections existing content.

     * </p>

     * @property BEFORE

     * @static

     * @type String

     */

    StdMod.BEFORE = "before";

    /**

     * Constant used to specify insertion position, when adding content to sections of the standard module in

     * methods which expect a "where" argument.

     * <p>

     * <em>Replaces</em> the sections existing content, with new content.

     * </p>

     * @property REPLACE

     * @static

     * @type String

     */

    StdMod.REPLACE = "replace";

    var STD_HEADER = StdMod.HEADER,

        STD_BODY = StdMod.BODY,

        STD_FOOTER = StdMod.FOOTER,

        HEADER_CONTENT = STD_HEADER + CONTENT_SUFFIX,

        FOOTER_CONTENT = STD_FOOTER + CONTENT_SUFFIX,

        BODY_CONTENT = STD_BODY + CONTENT_SUFFIX;

    /**

     * Static property used to define the default attribute

     * configuration introduced by WidgetStdMod.

     *

     * @property ATTRS

     * @type Object

     * @static

     */

    StdMod.ATTRS = {

        /**

         * @attribute headerContent

         * @type HTML

         * @default undefined

         * @description The content to be added to the header section. This will replace any existing content

         * in the header. If you want to append, or insert new content, use the <a href="#method_setStdModContent">setStdModContent</a> method.

         */

        headerContent: {

            value:null

        },

        /**

         * @attribute footerContent

         * @type HTML

         * @default undefined

         * @description The content to be added to the footer section. This will replace any existing content

         * in the footer. If you want to append, or insert new content, use the <a href="#method_setStdModContent">setStdModContent</a> method.

         */

        footerContent: {

            value:null

        },

        /**

         * @attribute bodyContent

         * @type HTML

         * @default undefined

         * @description The content to be added to the body section. This will replace any existing content

         * in the body. If you want to append, or insert new content, use the <a href="#method_setStdModContent">setStdModContent</a> method.

         */

        bodyContent: {

            value:null

        },

        /**

         * @attribute fillHeight

         * @type {String}

         * @default WidgetStdMod.BODY

         * @description The section (WidgetStdMod.HEADER, WidgetStdMod.BODY or WidgetStdMod.FOOTER) which should be resized to fill the height of the standard module, when a

         * height is set on the Widget. If a height is not set on the widget, then all sections are sized based on

         * their content.

         */

        fillHeight: {

            value: StdMod.BODY,

            validator: function(val) {

                 return this._validateFillHeight(val);

            }

        }

    };

    /**

     * The HTML parsing rules for the WidgetStdMod class.

     *

     * @property HTML_PARSER

     * @static

     * @type Object

     */

    StdMod.HTML_PARSER = {

        headerContent: function(contentBox) {

            return this._parseStdModHTML(STD_HEADER);

        },

        bodyContent: function(contentBox) {

            return this._parseStdModHTML(STD_BODY);

        },

        footerContent : function(contentBox) {

            return this._parseStdModHTML(STD_FOOTER);

        }

    };

    /**

     * Static hash of default class names used for the header,

     * body and footer sections of the standard module, keyed by

     * the section identifier (WidgetStdMod.STD_HEADER, WidgetStdMod.STD_BODY, WidgetStdMod.STD_FOOTER)

     *

     * @property SECTION_CLASS_NAMES

     * @static

     * @type Object

     */

    StdMod.SECTION_CLASS_NAMES = {

        header: Widget.getClassName(HD),

        body: Widget.getClassName(BD),

        footer: Widget.getClassName(FT)

    };

    /**

     * The template HTML strings for each of the standard module sections. Section entries are keyed by the section constants,

     * WidgetStdMod.HEADER, WidgetStdMod.BODY, WidgetStdMod.FOOTER, and contain the HTML to be added for each section.

     * e.g.

     * <pre>

     *    {

     *       header : '<div class="yui-widget-hd"></div>',

     *       body : '<div class="yui-widget-bd"></div>',

     *       footer : '<div class="yui-widget-ft"></div>'

     *    }

     * </pre>

     * @property TEMPLATES

     * @type Object

     * @static

     */

    StdMod.TEMPLATES = {

        header : '<div class="' + StdMod.SECTION_CLASS_NAMES[STD_HEADER] + '"></div>',

        body : '<div class="' + StdMod.SECTION_CLASS_NAMES[STD_BODY] + '"></div>',

        footer : '<div class="' + StdMod.SECTION_CLASS_NAMES[STD_FOOTER] + '"></div>'

    };

    StdMod.prototype = {

        /**

         * Synchronizes the UI to match the Widgets standard module state.

         * <p>

         * This method is invoked after syncUI is invoked for the Widget class

         * using YUI's aop infrastructure.

         * </p>

         * @method _syncUIStdMod

         * @protected

         */

        _syncUIStdMod : function() {

            var stdModParsed = this._stdModParsed;

            if (!stdModParsed || !stdModParsed[HEADER_CONTENT]) {

                this._uiSetStdMod(STD_HEADER, this.get(HEADER_CONTENT));

            }

            if (!stdModParsed || !stdModParsed[BODY_CONTENT]) {

                this._uiSetStdMod(STD_BODY, this.get(BODY_CONTENT));

            }

            if (!stdModParsed || !stdModParsed[FOOTER_CONTENT]) {

                this._uiSetStdMod(STD_FOOTER, this.get(FOOTER_CONTENT));

            }

            this._uiSetFillHeight(this.get(FILL_HEIGHT));

        },

        /**

         * Creates/Initializes the DOM for standard module support.

         * <p>

         * This method is invoked after renderUI is invoked for the Widget class

         * using YUI's aop infrastructure.

         * </p>

         * @method _renderUIStdMod

         * @protected

         */

        _renderUIStdMod : function() {

            this._stdModNode.addClass(Widget.getClassName(STDMOD));

            this._renderStdModSections();

            //This normally goes in bindUI but in order to allow setStdModContent() to work before renderUI

            //stage, these listeners should be set up at the earliest possible time.

            this.after(HeaderChange, this._afterHeaderChange);

            this.after(BodyChange, this._afterBodyChange);

            this.after(FooterChange, this._afterFooterChange);

        },

        _renderStdModSections : function() {

            if (L.isValue(this.get(HEADER_CONTENT))) { this._renderStdMod(STD_HEADER); }

            if (L.isValue(this.get(BODY_CONTENT))) { this._renderStdMod(STD_BODY); }

            if (L.isValue(this.get(FOOTER_CONTENT))) { this._renderStdMod(STD_FOOTER); }

        },

        /**

         * Binds event listeners responsible for updating the UI state in response to

         * Widget standard module related state changes.

         * <p>

         * This method is invoked after bindUI is invoked for the Widget class

         * using YUI's aop infrastructure.

         * </p>

         * @method _bindUIStdMod

         * @protected

         */

        _bindUIStdMod : function() {

            // this.after(HeaderChange, this._afterHeaderChange);

            // this.after(BodyChange, this._afterBodyChange);

            // this.after(FooterChange, this._afterFooterChange);

            this.after(FillHeightChange, this._afterFillHeightChange);

            this.after(HeightChange, this._fillHeight);

            this.after(ContentUpdate, this._fillHeight);

        },

        /**

         * Default attribute change listener for the headerContent attribute, responsible

         * for updating the UI, in response to attribute changes.

         *

         * @method _afterHeaderChange

         * @protected

         * @param {EventFacade} e The event facade for the attribute change

         */

        _afterHeaderChange : function(e) {

            if (e.src !== UI) {

                this._uiSetStdMod(STD_HEADER, e.newVal, e.stdModPosition);

            }

        },

        /**

         * Default attribute change listener for the bodyContent attribute, responsible

         * for updating the UI, in response to attribute changes.

         *

         * @method _afterBodyChange

         * @protected

         * @param {EventFacade} e The event facade for the attribute change

         */

        _afterBodyChange : function(e) {

            if (e.src !== UI) {

                this._uiSetStdMod(STD_BODY, e.newVal, e.stdModPosition);

            }

        },

        /**

         * Default attribute change listener for the footerContent attribute, responsible

         * for updating the UI, in response to attribute changes.

         *

         * @method _afterFooterChange

         * @protected

         * @param {EventFacade} e The event facade for the attribute change

         */

        _afterFooterChange : function(e) {

            if (e.src !== UI) {

                this._uiSetStdMod(STD_FOOTER, e.newVal, e.stdModPosition);

            }

        },

        /**

         * Default attribute change listener for the fillHeight attribute, responsible

         * for updating the UI, in response to attribute changes.

         *

         * @method _afterFillHeightChange

         * @protected

         * @param {EventFacade} e The event facade for the attribute change

         */

        _afterFillHeightChange: function (e) {

            this._uiSetFillHeight(e.newVal);

        },

        /**

         * Default validator for the fillHeight attribute. Verifies that the

         * value set is a valid section specifier - one of WidgetStdMod.HEADER, WidgetStdMod.BODY or WidgetStdMod.FOOTER,

         * or a falsey value if fillHeight is to be disabled.

         *

         * @method _validateFillHeight

         * @protected

         * @param {String} val The section which should be setup to fill height, or false/null to disable fillHeight

         * @return true if valid, false if not

         */

        _validateFillHeight : function(val) {

            return !val || val == StdMod.BODY || val == StdMod.HEADER || val == StdMod.FOOTER;

        },

        /**

         * Updates the rendered UI, to resize the provided section so that the standard module fills out

         * the specified widget height. Note: This method does not check whether or not a height is set

         * on the Widget.

         *

         * @method _uiSetFillHeight

         * @protected

         * @param {String} fillSection A valid section specifier - one of WidgetStdMod.HEADER, WidgetStdMod.BODY or WidgetStdMod.FOOTER

         */

        _uiSetFillHeight : function(fillSection) {

            var fillNode = this.getStdModNode(fillSection);

            var currNode = this._currFillNode;

            if (currNode && fillNode !== currNode){

                currNode.setStyle(HEIGHT, EMPTY);

            }

            if (fillNode) {