insideout10/wordlift-plugin-js

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app/admin_files/wp-tinymce-schema.js

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/**
 * TinyMCE Schema.js
 *
 * Duck-punched by WordPress core to support a sane schema superset.
 *
 * Copyright, Moxiecode Systems AB
 * Released under LGPL
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

(function(tinymce) {
    var mapCache = {}, makeMap = tinymce.makeMap, each = tinymce.each;

    function split(str, delim) {
        return str.split(delim || ',');
    };

    /**
     * Unpacks the specified lookup and string data it will also parse it into an object
     * map with sub object for it's children. This will later also include the attributes.
     */
    function unpack(lookup, data) {
        var key, elements = {};

        function replace(value) {
            return value.replace(/[A-Z]+/g, function(key) {
                return replace(lookup[key]);
            });
        };

        // Unpack lookup
        for (key in lookup) {
            if (lookup.hasOwnProperty(key))
                lookup[key] = replace(lookup[key]);
        }

        // Unpack and parse data into object map
        replace(data).replace(/#/g, '#text').replace(/(\w+)\[([^\]]+)\]\[([^\]]*)\]/g, function(str, name, attributes, children) {
            attributes = split(attributes, '|');

            elements[name] = {
                attributes : makeMap(attributes),
                attributesOrder : attributes,
                children : makeMap(children, '|', {'#comment' : {}})
            }
        });

        return elements;
    };

    /**
     * Returns the HTML5 schema and caches it in the mapCache.
     */
    function getHTML5() {
        var html5 = mapCache.html5;

        if (!html5) {
            html5 = mapCache.html5 = unpack({
                    A : 'accesskey|class|contextmenu|dir|draggable|dropzone|hidden|id|inert|itemid|itemprop|itemref|itemscope|itemtype|lang|spellcheck|style|tabindex|title|translate|item|role|subject|onclick|ondblclick|onmousedown|onmouseup|onmouseover|onmousemove|onmouseout|onkeypress|onkeydown|onkeyup',
                    B : '#|a|abbr|area|audio|b|bdi|bdo|br|button|canvas|cite|code|command|data|datalist|del|dfn|em|embed|i|iframe|img|input|ins|kbd|keygen|label|link|map|mark|math|meta|meter|noscript|object|output|progress|q|ruby|s|samp|script|select|small|span|strong|sub|sup|svg|textarea|time|u|var|video|wbr',
                    C : '#|a|abbr|area|address|article|aside|audio|b|bdi|bdo|blockquote|br|button|canvas|cite|code|command|data|datalist|del|details|dfn|dialog|div|dl|em|embed|fieldset|figure|footer|form|h1|h2|h3|h4|h5|h6|header|hgroup|hr|i|iframe|img|input|ins|kbd|keygen|label|link|map|mark|math|menu|meta|meter|nav|noscript|ol|object|output|p|pre|progress|q|ruby|s|samp|script|section|select|small|span|strong|style|sub|sup|svg|table|textarea|time|u|ul|var|video|wbr'
                }, 'html[A|manifest][body|head]' +
                    'head[A][base|command|link|meta|noscript|script|style|title]' +
                    'title[A][#]' +
                    'base[A|href|target][]' +
                    'link[A|href|rel|media|type|sizes|crossorigin|hreflang][]' +
                    'meta[A|http-equiv|name|content|charset][]' +
                    'style[A|type|media|scoped][#]' +
                    'script[A|charset|type|src|defer|async|crossorigin][#]' +
                    'noscript[A][C]' +
                    'body[A|onafterprint|onbeforeprint|onbeforeunload|onblur|onerror|onfocus|onfullscreenchange|onfullscreenerror|onhashchange|onload|onmessage|onoffline|ononline|onpagehide|onpageshow|onpopstate|onresize|onscroll|onstorage|onunload][C]' +
                    'section[A][C]' +
                    'nav[A][C]' +
                    'article[A][C]' +
                    'aside[A][C]' +
                    'h1[A][B]' +
                    'h2[A][B]' +
                    'h3[A][B]' +
                    'h4[A][B]' +
                    'h5[A][B]' +
                    'h6[A][B]' +
                    'hgroup[A][h1|h2|h3|h4|h5|h6]' +
                    'header[A][C]' +
                    'footer[A][C]' +
                    'address[A][C]' +
                    'p[A][B]' +
                    'br[A][]' +
                    'pre[A][B]' +
                    'dialog[A|open][C|dd|dt]' +
                    'blockquote[A|cite][C]' +
                    'ol[A|start|reversed][li]' +
                    'ul[A][li]' +
                    'li[A|value][C]' +
                    'dl[A][dd|dt]' +
                    'dt[A][C|B]' +
                    'dd[A][C]' +
                    'a[A|href|target|download|ping|rel|media|type][B]' +
                    'em[A][B]' +
                    'strong[A][B]' +
                    'small[A][B]' +
                    's[A][B]' +
                    'cite[A][B]' +
                    'q[A|cite][B]' +
                    'dfn[A][B]' +
                    'abbr[A][B]' +
                    'code[A][B]' +
                    'var[A][B]' +
                    'samp[A][B]' +
                    'kbd[A][B]' +
                    'sub[A][B]' +
                    'sup[A][B]' +
                    'i[A][B]' +
                    'b[A][B]' +
                    'u[A][B]' +
                    'mark[A][B]' +
                    'progress[A|value|max][B]' +
                    'meter[A|value|min|max|low|high|optimum][B]' +
                    'time[A|datetime][B]' +
                    'ruby[A][B|rt|rp]' +
                    'rt[A][B]' +
                    'rp[A][B]' +
                    'bdi[A][B]' +
                    'bdo[A][B]' +
                    'span[A][B]' +
                    'ins[A|cite|datetime][C|B]' +
                    'del[A|cite|datetime][C|B]' +
                    'figure[A][C|legend|figcaption]' +
                    'figcaption[A][C]' +
                    'img[A|alt|src|srcset|crossorigin|usemap|ismap|width|height][]' +
                    'iframe[A|name|src|srcdoc|height|width|sandbox|seamless|allowfullscreen][C|B]' +
                    'embed[A|src|height|width|type][]' +
                    'object[A|data|type|typemustmatch|name|usemap|form|width|height][C|B|param]' +
                    'param[A|name|value][]' +
                    'summary[A][B]' +
                    'details[A|open][C|legend|summary]' +
                    'command[A|type|label|icon|disabled|checked|radiogroup|command][]' +
                    'menu[A|type|label][C|li]' +
                    'legend[A][C|B]' +
                    'div[A][C]' +
                    'source[A|src|type|media][]' +
                    'track[A|kind|src|srclang|label|default][]' +
                    'audio[A|src|autobuffer|autoplay|loop|controls|crossorigin|preload|mediagroup|muted][C|source|track]' +
                    'video[A|src|autobuffer|autoplay|loop|controls|width|height|poster|crossorigin|preload|mediagroup|muted][C|source|track]' +
                    'hr[A][]' +
                    'form[A|accept-charset|action|autocomplete|enctype|method|name|novalidate|target][C]' +
                    'fieldset[A|disabled|form|name][C|legend]' +
                    'label[A|form|for][B]' +
                    'input[A|type|accept|alt|autocomplete|autofocus|checked|dirname|disabled|form|formaction|formenctype|formmethod|formnovalidate|formtarget|height|inputmode|list|max|maxlength|min|multiple|name|pattern|placeholder|readonly|required|size|src|step|value|width|files][]' +
                    'button[A|autofocus|disabled|form|formaction|formenctype|formmethod|formnovalidate|formtarget|name|type|value][B]' +
                    'select[A|autofocus|disabled|form|multiple|name|required|size][option|optgroup]' +
                    'data[A|value][B]' +
                    'datalist[A][B|option]' +
                    'optgroup[A|disabled|label][option]' +
                    'option[A|disabled|selected|label|value][#]' +
                    'textarea[A|autocomplete|autofocus|cols|dirname|disabled|form|inputmode|maxlength|name|placeholder|readonly|required|rows|wrap][#]' +
                    'keygen[A|autofocus|challenge|disabled|form|keytype|name][]' +
                    'output[A|for|form|name][B]' +
                    'canvas[A|width|height][a|button|input]' +
                    'map[A|name][C|B]' +
                    'area[A|alt|coords|shape|href|target|download|ping|rel|media|hreflang|type][]' +
                    'math[A][]' +
                    'svg[A][]' +
                    'table[A][caption|colgroup|thead|tfoot|tbody|tr]' +
                    'caption[A][C]' +
                    'colgroup[A|span][col]' +
                    'col[A|span][]' +
                    'thead[A][tr]' +
                    'tfoot[A][tr]' +
                    'tbody[A][tr]' +
                    'tr[A][th|td]' +
                    'th[A|headers|rowspan|colspan|scope][C]' +
                    'td[A|headers|rowspan|colspan][C]' +
                    'wbr[A][]'
            );
        }

        return html5;
    };

    /**
     * Returns the HTML4 schema and caches it in the mapCache.
     */
    function getHTML4() {
        var html4 = mapCache.html4;

        if (!html4) {
            // This is the XHTML 1.0 transitional elements with it's attributes and children packed to reduce it's size
            html4 = mapCache.html4 = unpack({
                Z : 'H|K|N|O|P',
                Y : 'X|form|R|Q',
                ZG : 'E|span|width|align|char|charoff|valign',
                X : 'p|T|div|U|W|isindex|fieldset|table',
                ZF : 'E|align|char|charoff|valign',
                W : 'pre|hr|blockquote|address|center|noframes',
                ZE : 'abbr|axis|headers|scope|rowspan|colspan|align|char|charoff|valign|nowrap|bgcolor|width|height',
                ZD : '[E][S]',
                U : 'ul|ol|dl|menu|dir',
                ZC : 'p|Y|div|U|W|table|br|span|bdo|object|applet|img|map|K|N|Q',
                T : 'h1|h2|h3|h4|h5|h6',
                ZB : 'X|S|Q',
                S : 'R|P',
                ZA : 'a|G|J|M|O|P',
                R : 'a|H|K|N|O',
                Q : 'noscript|P',
                P : 'ins|del|script',
                O : 'input|select|textarea|label|button',
                N : 'M|L',
                M : 'em|strong|dfn|code|q|samp|kbd|var|cite|abbr|acronym',
                L : 'sub|sup',
                K : 'J|I',
                J : 'tt|i|b|u|s|strike',
                I : 'big|small|font|basefont',
                H : 'G|F',
                G : 'br|span|bdo',
                F : 'object|applet|img|map|iframe',
                E : 'A|B|C',
                D : 'accesskey|tabindex|onfocus|onblur',
                C : 'onclick|ondblclick|onmousedown|onmouseup|onmouseover|onmousemove|onmouseout|onkeypress|onkeydown|onkeyup',
                B : 'lang|xml:lang|dir',
                A : 'id|class|style|title'
            }, 'script[id|charset|type|language|src|defer|xml:space][]' +
                'style[B|id|type|media|title|xml:space][]' +
                'object[E|declare|classid|codebase|data|type|codetype|archive|standby|width|height|usemap|name|tabindex|align|border|hspace|vspace][#|param|Y]' +
                'param[id|name|value|valuetype|type][]' +
                'p[E|align][#|S]' +
                'a[E|D|charset|type|name|href|hreflang|rel|rev|shape|coords|target][#|Z]' +
                'br[A|clear][]' +
                'span[E][#|S]' +
                'bdo[A|C|B][#|S]' +
                'applet[A|codebase|archive|code|object|alt|name|width|height|align|hspace|vspace][#|param|Y]' +
                'h1[E|align][#|S]' +
                'img[E|src|alt|name|longdesc|width|height|usemap|ismap|align|border|hspace|vspace][]' +
                'map[B|C|A|name][X|form|Q|area]' +
                'h2[E|align][#|S]' +
                'iframe[A|longdesc|name|src|frameborder|marginwidth|marginheight|scrolling|align|width|height][#|Y]' +
                'h3[E|align][#|S]' +
                'tt[E][#|S]' +
                'i[E][#|S]' +
                'b[E][#|S]' +
                'u[E][#|S]' +
                's[E][#|S]' +
                'strike[E][#|S]' +
                'big[E][#|S]' +
                'small[E][#|S]' +
                'font[A|B|size|color|face][#|S]' +
                'basefont[id|size|color|face][]' +
                'em[E][#|S]' +
                'strong[E][#|S]' +
                'dfn[E][#|S]' +
                'code[E][#|S]' +
                'q[E|cite][#|S]' +
                'samp[E][#|S]' +
                'kbd[E][#|S]' +
                'var[E][#|S]' +
                'cite[E][#|S]' +
                'abbr[E][#|S]' +
                'acronym[E][#|S]' +
                'sub[E][#|S]' +
                'sup[E][#|S]' +
                'input[E|D|type|name|value|checked|disabled|readonly|size|maxlength|src|alt|usemap|onselect|onchange|accept|align][]' +
                'select[E|name|size|multiple|disabled|tabindex|onfocus|onblur|onchange][optgroup|option]' +
                'optgroup[E|disabled|label][option]' +
                'option[E|selected|disabled|label|value][]' +
                'textarea[E|D|name|rows|cols|disabled|readonly|onselect|onchange][]' +
                'label[E|for|accesskey|onfocus|onblur][#|S]' +
                'button[E|D|name|value|type|disabled][#|p|T|div|U|W|table|G|object|applet|img|map|K|N|Q]' +
                'h4[E|align][#|S]' +
                'ins[E|cite|datetime][#|Y]' +
                'h5[E|align][#|S]' +
                'del[E|cite|datetime][#|Y]' +
                'h6[E|align][#|S]' +
                'div[E|align][#|Y]' +
                'ul[E|type|compact][li]' +
                'li[E|type|value][#|Y]' +
                'ol[E|type|compact|start][li]' +
                'dl[E|compact][dt|dd]' +
                'dt[E][#|S]' +
                'dd[E][#|Y]' +
                'menu[E|compact][li]' +
                'dir[E|compact][li]' +
                'pre[E|width|xml:space][#|ZA]' +
                'hr[E|align|noshade|size|width][]' +
                'blockquote[E|cite][#|Y]' +
                'address[E][#|S|p]' +
                'center[E][#|Y]' +
                'noframes[E][#|Y]' +
                'isindex[A|B|prompt][]' +
                'fieldset[E][#|legend|Y]' +
                'legend[E|accesskey|align][#|S]' +
                'table[E|summary|width|border|frame|rules|cellspacing|cellpadding|align|bgcolor][caption|col|colgroup|thead|tfoot|tbody|tr]' +
                'caption[E|align][#|S]' +
                'col[ZG][]' +
                'colgroup[ZG][col]' +
                'thead[ZF][tr]' +
                'tr[ZF|bgcolor][th|td]' +
                'th[E|ZE][#|Y]' +
                'form[E|action|method|name|enctype|onsubmit|onreset|accept|accept-charset|target][#|X|R|Q]' +
                'noscript[E][#|Y]' +
                'td[E|ZE][#|Y]' +
                'tfoot[ZF][tr]' +
                'tbody[ZF][tr]' +
                'area[E|D|shape|coords|href|nohref|alt|target][]' +
                'base[id|href|target][]' +
                'body[E|onload|onunload|background|bgcolor|text|link|vlink|alink][#|Y]'
            );
        }

        return html4;
    };

    /**
     * WordPress Core
     *
     * Returns a schema that is the result of a deep merge between the HTML5
     * and HTML4 schemas.
     */
    function getSaneSchema() {
        var cachedMapCache = mapCache,
            html5, html4;

        if ( mapCache.sane )
            return mapCache.sane;

        // Bust the mapCache so we're not dealing with the other schema objects.
        mapCache = {};
        html5 = getHTML5();
        html4 = getHTML4();
        mapCache = cachedMapCache;

        each( html4, function( html4settings, tag ) {
            var html5settings = html5[ tag ],
                difference = [];

            // Merge tags missing in HTML5 mode.
            if ( ! html5settings ) {
                html5[ tag ] = html4settings;
                return;
            }

            // Merge attributes missing from this HTML5 tag.
            each( html4settings.attributes, function( attribute, key ) {
                if ( ! html5settings.attributes[ key ] )
                    html5settings.attributes[ key ] = attribute;
            });

            // Merge any missing attributes into the attributes order.
            each( html4settings.attributesOrder, function( key ) {
                if ( -1 === tinymce.inArray( html5settings.attributesOrder, key ) )
                    difference.push( key );
            });

            html5settings.attributesOrder = html5settings.attributesOrder.concat( difference );

            // Merge children missing from this HTML5 tag.
            each( html4settings.children, function( child, key ) {
                if ( ! html5settings.children[ key ] )
                    html5settings.children[ key ] = child;
            });
        });

        return mapCache.sane = html5;
    }

    /**
     * Schema validator class.
     *
     * @class tinymce.html.Schema
     * @example
     *  if (tinymce.activeEditor.schema.isValidChild('p', 'span'))
     *    alert('span is valid child of p.');
     *
     *  if (tinymce.activeEditor.schema.getElementRule('p'))
     *    alert('P is a valid element.');
     *
     * @class tinymce.html.Schema
     * @version 3.4
     */

    /**
     * Constructs a new Schema instance.
     *
     * @constructor
     * @method Schema
     * @param {Object} settings Name/value settings object.
     */
    tinymce.html.Schema = function(settings) {
        var self = this, elements = {}, children = {}, patternElements = [], validStyles, schemaItems;
        var whiteSpaceElementsMap, selfClosingElementsMap, shortEndedElementsMap, boolAttrMap, blockElementsMap, nonEmptyElementsMap, customElementsMap = {};

        // Creates an lookup table map object for the specified option or the default value
        function createLookupTable(option, default_value, extend) {
            var value = settings[option];

            if (!value) {
                // Get cached default map or make it if needed
                value = mapCache[option];

                if (!value) {
                    value = makeMap(default_value, ' ', makeMap(default_value.toUpperCase(), ' '));
                    value = tinymce.extend(value, extend);

                    mapCache[option] = value;
                }
            } else {
                // Create custom map
                value = makeMap(value, ',', makeMap(value.toUpperCase(), ' '));
            }

            return value;
        };

        settings = settings || {};

        /**
         * WordPress core uses a sane schema in place of the default "HTML5" schema.
         */
        schemaItems = settings.schema == "html5" ? getSaneSchema() : getHTML4();

        // Allow all elements and attributes if verify_html is set to false
        if (settings.verify_html === false)
            settings.valid_elements = '*[*]';

        // Build styles list
        if (settings.valid_styles) {
            validStyles = {};

            // Convert styles into a rule list
            each(settings.valid_styles, function(value, key) {
                validStyles[key] = tinymce.explode(value);
            });
        }

        // Setup map objects
        whiteSpaceElementsMap = createLookupTable('whitespace_elements', 'pre script noscript style textarea');
        selfClosingElementsMap = createLookupTable('self_closing_elements', 'colgroup dd dt li option p td tfoot th thead tr');
        shortEndedElementsMap = createLookupTable('short_ended_elements', 'area base basefont br col frame hr img input isindex link meta param embed source wbr');
        boolAttrMap = createLookupTable('boolean_attributes', 'checked compact declare defer disabled ismap multiple nohref noresize noshade nowrap readonly selected autoplay loop controls');
        nonEmptyElementsMap = createLookupTable('non_empty_elements', 'td th iframe video audio object', shortEndedElementsMap);
        textBlockElementsMap = createLookupTable('text_block_elements', 'h1 h2 h3 h4 h5 h6 p div address pre form ' +
                        'blockquote center dir fieldset header footer article section hgroup aside nav figure');
        blockElementsMap = createLookupTable('block_elements', 'hr table tbody thead tfoot ' +
                        'th tr td li ol ul caption dl dt dd noscript menu isindex option datalist select optgroup', textBlockElementsMap);

        // Converts a wildcard expression string to a regexp for example *a will become /.*a/.
        function patternToRegExp(str) {
            return new RegExp('^' + str.replace(/([?+*])/g, '.$1') + '$');
        };

        // Parses the specified valid_elements string and adds to the current rules
        // This function is a bit hard to read since it's heavily optimized for speed
        function addValidElements(valid_elements) {
            var ei, el, ai, al, yl, matches, element, attr, attrData, elementName, attrName, attrType, attributes, attributesOrder,
                prefix, outputName, globalAttributes, globalAttributesOrder, transElement, key, childKey, value,
                elementRuleRegExp = /^([#+\-])?([^\[\/]+)(?:\/([^\[]+))?(?:\[([^\]]+)\])?$/,
                attrRuleRegExp = /^([!\-])?(\w+::\w+|[^=:<]+)?(?:([=:<])(.*))?$/,
                hasPatternsRegExp = /[*?+]/;

            if (valid_elements) {
                // Split valid elements into an array with rules
                valid_elements = split(valid_elements);

                if (elements['@']) {
                    globalAttributes = elements['@'].attributes;
                    globalAttributesOrder = elements['@'].attributesOrder;
                }

                // Loop all rules
                for (ei = 0, el = valid_elements.length; ei < el; ei++) {
                    // Parse element rule
                    matches = elementRuleRegExp.exec(valid_elements[ei]);
                    if (matches) {
                        // Setup local names for matches
                        prefix = matches[1];
                        elementName = matches[2];
                        outputName = matches[3];
                        attrData = matches[4];

                        // Create new attributes and attributesOrder
                        attributes = {};
                        attributesOrder = [];

                        // Create the new element
                        element = {
                            attributes : attributes,
                            attributesOrder : attributesOrder
                        };

                        // Padd empty elements prefix
                        if (prefix === '#')
                            element.paddEmpty = true;

                        // Remove empty elements prefix
                        if (prefix === '-')
                            element.removeEmpty = true;

                        // Copy attributes from global rule into current rule
                        if (globalAttributes) {
                            for (key in globalAttributes)
                                attributes[key] = globalAttributes[key];

                            attributesOrder.push.apply(attributesOrder, globalAttributesOrder);
                        }

                        // Attributes defined
                        if (attrData) {
                            attrData = split(attrData, '|');
                            for (ai = 0, al = attrData.length; ai < al; ai++) {
                                matches = attrRuleRegExp.exec(attrData[ai]);
                                if (matches) {
                                    attr = {};
                                    attrType = matches[1];
                                    attrName = matches[2].replace(/::/g, ':');
                                    prefix = matches[3];
                                    value = matches[4];

                                    // Required
                                    if (attrType === '!') {
                                        element.attributesRequired = element.attributesRequired || [];
                                        element.attributesRequired.push(attrName);
                                        attr.required = true;
                                    }

                                    // Denied from global
                                    if (attrType === '-') {
                                        delete attributes[attrName];
                                        attributesOrder.splice(tinymce.inArray(attributesOrder, attrName), 1);
                                        continue;
                                    }

                                    // Default value
                                    if (prefix) {
                                        // Default value
                                        if (prefix === '=') {
                                            element.attributesDefault = element.attributesDefault || [];
                                            element.attributesDefault.push({name: attrName, value: value});
                                            attr.defaultValue = value;
                                        }

                                        // Forced value
                                        if (prefix === ':') {
                                            element.attributesForced = element.attributesForced || [];
                                            element.attributesForced.push({name: attrName, value: value});
                                            attr.forcedValue = value;
                                        }

                                        // Required values
                                        if (prefix === '<')
                                            attr.validValues = makeMap(value, '?');
                                    }

                                    // Check for attribute patterns
                                    if (hasPatternsRegExp.test(attrName)) {
                                        element.attributePatterns = element.attributePatterns || [];
                                        attr.pattern = patternToRegExp(attrName);
                                        element.attributePatterns.push(attr);
                                    } else {
                                        // Add attribute to order list if it doesn't already exist
                                        if (!attributes[attrName])
                                            attributesOrder.push(attrName);

                                        attributes[attrName] = attr;
                                    }
                                }
                            }
                        }

                        // Global rule, store away these for later usage
                        if (!globalAttributes && elementName == '@') {
                            globalAttributes = attributes;
                            globalAttributesOrder = attributesOrder;
                        }

                        // Handle substitute elements such as b/strong
                        if (outputName) {
                            element.outputName = elementName;
                            elements[outputName] = element;
                        }

                        // Add pattern or exact element
                        if (hasPatternsRegExp.test(elementName)) {
                            element.pattern = patternToRegExp(elementName);
                            patternElements.push(element);
                        } else
                            elements[elementName] = element;
                    }
                }
            }
        };

        function setValidElements(valid_elements) {
            elements = {};
            patternElements = [];

            addValidElements(valid_elements);

            each(schemaItems, function(element, name) {
                children[name] = element.children;
            });
        };

        // Adds custom non HTML elements to the schema
        function addCustomElements(custom_elements) {
            var customElementRegExp = /^(~)?(.+)$/;

            if (custom_elements) {
                each(split(custom_elements), function(rule) {
                    var matches = customElementRegExp.exec(rule),
                        inline = matches[1] === '~',
                        cloneName = inline ? 'span' : 'div',
                        name = matches[2];

                    children[name] = children[cloneName];
                    customElementsMap[name] = cloneName;

                    // If it's not marked as inline then add it to valid block elements
                    if (!inline) {
                        blockElementsMap[name.toUpperCase()] = {};
                        blockElementsMap[name] = {};
                    }

                    // Add elements clone if needed
                    if (!elements[name]) {
                        elements[name] = elements[cloneName];
                    }

                    // Add custom elements at span/div positions
                    each(children, function(element, child) {
                        if (element[cloneName])
                            element[name] = element[cloneName];
                    });
                });
            }
        };

        // Adds valid children to the schema object
        function addValidChildren(valid_children) {
            var childRuleRegExp = /^([+\-]?)(\w+)\[([^\]]+)\]$/;

            if (valid_children) {
                each(split(valid_children), function(rule) {
                    var matches = childRuleRegExp.exec(rule), parent, prefix;

                    if (matches) {
                        prefix = matches[1];

                        // Add/remove items from default
                        if (prefix)
                            parent = children[matches[2]];
                        else
                            parent = children[matches[2]] = {'#comment' : {}};

                        parent = children[matches[2]];

                        each(split(matches[3], '|'), function(child) {
                            if (prefix === '-')
                                delete parent[child];
                            else
                                parent[child] = {};
                        });
                    }
                });
            }
        };

        function getElementRule(name) {
            var element = elements[name], i;

            // Exact match found
            if (element)
                return element;

            // No exact match then try the patterns
            i = patternElements.length;
            while (i--) {
                element = patternElements[i];

                if (element.pattern.test(name))
                    return element;
            }
        };

        if (!settings.valid_elements) {
            // No valid elements defined then clone the elements from the schema spec
            each(schemaItems, function(element, name) {
                elements[name] = {
                    attributes : element.attributes,
                    attributesOrder : element.attributesOrder
                };

                children[name] = element.children;
            });

            // Switch these on HTML4
            if (settings.schema != "html5") {
                each(split('strong/b,em/i'), function(item) {
                    item = split(item, '/');
                    elements[item[1]].outputName = item[0];
                });
            }

            // Add default alt attribute for images
            elements.img.attributesDefault = [{name: 'alt', value: ''}];

            // Remove these if they are empty by default
            each(split('ol,ul,sub,sup,blockquote,span,font,a,table,tbody,tr'), function(name) {
                if (elements[name]) {
                    elements[name].removeEmpty = true;
                }
            });

            // Padd these by default
            each(split('p,h1,h2,h3,h4,h5,h6,th,td,pre,div,address,caption'), function(name) {
                elements[name].paddEmpty = true;
            });
        } else
            setValidElements(settings.valid_elements);

        addCustomElements(settings.custom_elements);
        addValidChildren(settings.valid_children);
        addValidElements(settings.extended_valid_elements);

        // Todo: Remove this when we fix list handling to be valid
        addValidChildren('+ol[ul|ol],+ul[ul|ol]');

        // Delete invalid elements
        if (settings.invalid_elements) {
            tinymce.each(tinymce.explode(settings.invalid_elements), function(item) {
                if (elements[item])
                    delete elements[item];
            });
        }

        // If the user didn't allow span only allow internal spans
        if (!getElementRule('span'))
            addValidElements('span[!data-mce-type|*]');

        /**
         * Name/value map object with valid parents and children to those parents.
         *
         * @example
         * children = {
         *    div:{p:{}, h1:{}}
         * };
         * @field children
         * @type {Object}
         */
        self.children = children;

        /**
         * Name/value map object with valid styles for each element.
         *
         * @field styles
         * @type {Object}
         */
        self.styles = validStyles;

        /**
         * Returns a map with boolean attributes.
         *
         * @method getBoolAttrs
         * @return {Object} Name/value lookup map for boolean attributes.
         */
        self.getBoolAttrs = function() {
            return boolAttrMap;
        };

        /**
         * Returns a map with block elements.
         *
         * @method getBlockElements
         * @return {Object} Name/value lookup map for block elements.
         */
        self.getBlockElements = function() {
            return blockElementsMap;
        };

        /**
         * Returns a map with text block elements. Such as: p,h1-h6,div,address
         *
         * @method getTextBlockElements
         * @return {Object} Name/value lookup map for block elements.
         */
        self.getTextBlockElements = function() {
            return textBlockElementsMap;
        };

        /**
         * Returns a map with short ended elements such as BR or IMG.
         *
         * @method getShortEndedElements
         * @return {Object} Name/value lookup map for short ended elements.
         */
        self.getShortEndedElements = function() {
            return shortEndedElementsMap;
        };

        /**
         * Returns a map with self closing tags such as <li>.
         *
         * @method getSelfClosingElements
         * @return {Object} Name/value lookup map for self closing tags elements.
         */
        self.getSelfClosingElements = function() {
            return selfClosingElementsMap;
        };

        /**
         * Returns a map with elements that should be treated as contents regardless if it has text
         * content in them or not such as TD, VIDEO or IMG.
         *
         * @method getNonEmptyElements
         * @return {Object} Name/value lookup map for non empty elements.
         */
        self.getNonEmptyElements = function() {
            return nonEmptyElementsMap;
        };

        /**
         * Returns a map with elements where white space is to be preserved like PRE or SCRIPT.
         *
         * @method getWhiteSpaceElements
         * @return {Object} Name/value lookup map for white space elements.
         */
        self.getWhiteSpaceElements = function() {
            return whiteSpaceElementsMap;
        };

        /**
         * Returns true/false if the specified element and it's child is valid or not
         * according to the schema.
         *
         * @method isValidChild
         * @param {String} name Element name to check for.
         * @param {String} child Element child to verify.
         * @return {Boolean} True/false if the element is a valid child of the specified parent.
         */
        self.isValidChild = function(name, child) {
            var parent = children[name];

            return !!(parent && parent[child]);
        };

        /**
         * Returns true/false if the specified element name and optional attribute is
         * valid according to the schema.
         *
         * @method isValid
         * @param {String} name Name of element to check.
         * @param {String} attr Optional attribute name to check for.
         * @return {Boolean} True/false if the element and attribute is valid.
         */
        self.isValid = function(name, attr) {
            var attrPatterns, i, rule = getElementRule(name);

            // Check if it's a valid element
            if (rule) {
                if (attr) {
                    // Check if attribute name exists
                    if (rule.attributes[attr]) {
                        return true;
                    }

                    // Check if attribute matches a regexp pattern
                    attrPatterns = rule.attributePatterns;
                    if (attrPatterns) {
                        i = attrPatterns.length;
                        while (i--) {
                            if (attrPatterns[i].pattern.test(name)) {
                                return true;
                            }
                        }
                    }
                } else {
                    return true;
                }
            }

            // No match
            return false;
        };

        /**
         * Returns true/false if the specified element is valid or not
         * according to the schema.
         *
         * @method getElementRule
         * @param {String} name Element name to check for.
         * @return {Object} Element object or undefined if the element isn't valid.
         */
        self.getElementRule = getElementRule;

        /**
         * Returns an map object of all custom elements.
         *
         * @method getCustomElements
         * @return {Object} Name/value map object of all custom elements.
         */
        self.getCustomElements = function() {
            return customElementsMap;
        };

        /**
         * Parses a valid elements string and adds it to the schema. The valid elements format is for example "element[attr=default|otherattr]".
         * Existing rules will be replaced with the ones specified, so this extends the schema.
         *
         * @method addValidElements
         * @param {String} valid_elements String in the valid elements format to be parsed.
         */
        self.addValidElements = addValidElements;

        /**
         * Parses a valid elements string and sets it to the schema. The valid elements format is for example "element[attr=default|otherattr]".
         * Existing rules will be replaced with the ones specified, so this extends the schema.
         *
         * @method setValidElements
         * @param {String} valid_elements String in the valid elements format to be parsed.
         */
        self.setValidElements = setValidElements;

        /**
         * Adds custom non HTML elements to the schema.
         *
         * @method addCustomElements
         * @param {String} custom_elements Comma separated list of custom elements to add.
         */
        self.addCustomElements = addCustomElements;

        /**
         * Parses a valid children string and adds them to the schema structure. The valid children format is for example: "element[child1|child2]".
         *
         * @method addValidChildren
         * @param {String} valid_children Valid children elements string to parse
         */
        self.addValidChildren = addValidChildren;

        self.elements = elements;
    };
})(tinymce);