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/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

/**
 * @fileOverview Defines the {@link CKEDITOR.dtd} object, which holds the DTD
 *		mapping for XHTML 1.0 Transitional. This file was automatically
 *		generated from the file: xhtml1-transitional.dtd.
 */

/**
 * Holds and object representation of the HTML DTD to be used by the
 * editor in its internal operations.
 *
 * Each element in the DTD is represented by a property in this object. Each
 * property contains the list of elements that can be contained by the element.
 * Text is represented by the `#` property.
 *
 * Several special grouping properties are also available. Their names start
 * with the `$` character.
 *
 *		// Check if <div> can be contained in a <p> element.
 *		alert( !!CKEDITOR.dtd[ 'p' ][ 'div' ] ); // false
 *
 *		// Check if <p> can be contained in a <div> element.
 *		alert( !!CKEDITOR.dtd[ 'div' ][ 'p' ] ); // true
 *
 *		// Check if <p> is a block element.
 *		alert( !!CKEDITOR.dtd.$block[ 'p' ] ); // true
 *
 * @class CKEDITOR.dtd
 * @singleton
 */
CKEDITOR.dtd = ( function() {
	'use strict';

	var X = CKEDITOR.tools.extend,
		// Subtraction rest of sets, from the first set.
		Y = function( source, removed ) {
			var substracted = CKEDITOR.tools.clone( source );
			for ( var i = 1; i < arguments.length; i++ ) {
				removed = arguments[ i ];
				for ( var name in removed )
					delete substracted[ name ];
			}
			return substracted;
		};

	// Phrasing elements.
	// P = { a: 1, em: 1, strong: 1, small: 1, abbr: 1, dfn: 1, i: 1, b: 1, s: 1,
	//		u: 1, code: 1, 'var': 1, samp: 1, kbd: 1, sup: 1, sub: 1, q: 1, cite: 1,
	//		span: 1, bdo: 1, bdi: 1, br: 1, wbr: 1, ins: 1, del: 1, img: 1, embed: 1,
	//		object: 1, iframe: 1, map: 1, area: 1, script: 1, noscript: 1, ruby: 1,
	//		video: 1, audio: 1, input: 1, textarea: 1, select: 1, button: 1, label: 1,
	//		output: 1, keygen: 1, progress: 1, command: 1, canvas: 1, time: 1,
	//		meter: 1, detalist: 1 },

	// Flow elements.
	// F = { a: 1, p: 1, hr: 1, pre: 1, ul: 1, ol: 1, dl: 1, div: 1, h1: 1, h2: 1,
	//		h3: 1, h4: 1, h5: 1, h6: 1, hgroup: 1, address: 1, blockquote: 1, ins: 1,
	//		del: 1, object: 1, map: 1, noscript: 1, section: 1, nav: 1, article: 1,
	//		aside: 1, header: 1, footer: 1, video: 1, audio: 1, figure: 1, table: 1,
	//		form: 1, fieldset: 1, menu: 1, canvas: 1, details:1 },

	// Text can be everywhere.
	// X( P, T );
	// Flow elements set consists of phrasing elements set.
	// X( F, P );

	var P = {}, F = {},
		// Intersection of flow elements set and phrasing elements set.
		PF = {
			a: 1, abbr: 1, area: 1, audio: 1, b: 1, bdi: 1, bdo: 1, br: 1, button: 1, canvas: 1, cite: 1,
			code: 1, command: 1, datalist: 1, del: 1, dfn: 1, em: 1, embed: 1, i: 1, iframe: 1, img: 1,
			input: 1, ins: 1, kbd: 1, keygen: 1, label: 1, map: 1, mark: 1, meter: 1, noscript: 1, object: 1,
			output: 1, progress: 1, q: 1, ruby: 1, s: 1, samp: 1, script: 1, select: 1, small: 1, span: 1,
			strong: 1, sub: 1, sup: 1, textarea: 1, time: 1, u: 1, 'var': 1, video: 1, wbr: 1
		},
		// F - PF (Flow Only).
		FO = {
			address: 1, article: 1, aside: 1, blockquote: 1, details: 1, div: 1, dl: 1, fieldset: 1,
			figure: 1, footer: 1, form: 1, h1: 1, h2: 1, h3: 1, h4: 1, h5: 1, h6: 1, header: 1, hgroup: 1,
			hr: 1, main: 1, menu: 1, nav: 1, ol: 1, p: 1, pre: 1, section: 1, table: 1, ul: 1
		},
		// Metadata elements.
		M = { command: 1, link: 1, meta: 1, noscript: 1, script: 1, style: 1 },
		// Empty.
		E = {},
		// Text.
		T = { '#': 1 },

		// Deprecated phrasing elements.
		DP = { acronym: 1, applet: 1, basefont: 1, big: 1, font: 1, isindex: 1, strike: 1, style: 1, tt: 1 }, // TODO remove "style".
		// Deprecated flow only elements.
		DFO = { center: 1, dir: 1, noframes: 1 };

	// Phrasing elements := PF + T + DP
	X( P, PF, T, DP );
	// Flow elements := FO + P + DFO
	X( F, FO, P, DFO );

	var dtd = {
		a: Y( P, { a: 1, button: 1 } ), // Treat as normal inline element (not a transparent one).
		abbr: P,
		address: F,
		area: E,
		article: F,
		aside: F,
		audio: X( { source: 1, track: 1 }, F ),
		b: P,
		base: E,
		bdi: P,
		bdo: P,
		blockquote: F,
		body: F,
		br: E,
		button: Y( P, { a: 1, button: 1 } ),
		canvas: P, // Treat as normal inline element (not a transparent one).
		caption: F,
		cite: P,
		code: P,
		col: E,
		colgroup: { col: 1 },
		command: E,
		datalist: X( { option: 1 }, P ),
		dd: F,
		del: P, // Treat as normal inline element (not a transparent one).
		details: X( { summary: 1 }, F ),
		dfn: P,
		div: F,
		dl: { dt: 1, dd: 1 },
		dt: F,
		em: P,
		embed: E,
		fieldset: X( { legend: 1 }, F ),
		figcaption: F,
		figure: X( { figcaption: 1 }, F ),
		footer: F,
		form: F,
		h1: P,
		h2: P,
		h3: P,
		h4: P,
		h5: P,
		h6: P,
		head: X( { title: 1, base: 1 }, M ),
		header: F,
		hgroup: { h1: 1, h2: 1, h3: 1, h4: 1, h5: 1, h6: 1 },
		hr: E,
		html: X( { head: 1, body: 1 }, F, M ), // Head and body are optional...
		i: P,
		iframe: T,
		img: E,
		input: E,
		ins: P, // Treat as normal inline element (not a transparent one).
		kbd: P,
		keygen: E,
		label: P,
		legend: P,
		li: F,
		link: E,
		// Can't be a descendant of article, aside, footer, header, nav, but we don't need this
		// complication. As well as checking if it's used only once.
		main: F,
		map: F,
		mark: P, // Treat as normal inline element (not a transparent one).
		menu: X( { li: 1 }, F ),
		meta: E,
		meter: Y( P, { meter: 1 } ),
		nav: F,
		noscript: X( { link: 1, meta: 1, style: 1 }, P ), // Treat as normal inline element (not a transparent one).
		object: X( { param: 1 }, P ), // Treat as normal inline element (not a transparent one).
		ol: { li: 1 },
		optgroup: { option: 1 },
		option: T,
		output: P,
		p: P,
		param: E,
		pre: P,
		progress: Y( P, { progress: 1 } ),
		q: P,
		rp: P,
		rt: P,
		ruby: X( { rp: 1, rt: 1 }, P ),
		s: P,
		samp: P,
		script: T,
		section: F,
		select: { optgroup: 1, option: 1 },
		small: P,
		source: E,
		span: P,
		strong: P,
		style: T,
		sub: P,
		summary: X( { h1: 1, h2: 1, h3: 1, h4: 1, h5: 1, h6: 1 }, P ),
		sup: P,
		table: { caption: 1, colgroup: 1, thead: 1, tfoot: 1, tbody: 1, tr: 1 },
		tbody: { tr: 1 },
		td: F,
		textarea: T,
		tfoot: { tr: 1 },
		th: F,
		thead: { tr: 1 },
		time: Y( P, { time: 1 } ),
		title: T,
		tr: { th: 1, td: 1 },
		track: E,
		u: P,
		ul: { li: 1 },
		'var': P,
		video: X( { source: 1, track: 1 }, F ),
		wbr: E,

		// Deprecated tags.
		acronym: P,
		applet: X( { param: 1 }, F ),
		basefont: E,
		big: P,
		center: F,
		dialog: E,
		dir: { li: 1 },
		font: P,
		isindex: E,
		noframes: F,
		strike: P,
		tt: P
	};

	X( dtd, {
		/**
		 * List of block elements, like `<p>` or `<div>`.
		 */
		$block: X( { audio: 1, dd: 1, dt: 1, figcaption: 1, li: 1, video: 1 }, FO, DFO ),

		/**
		 * List of elements that contain other blocks, in which block-level operations should be limited,
		 * this property is not intended to be checked directly, use {@link CKEDITOR.dom.elementPath#blockLimit} instead.
		 *
		 * Some examples of editor behaviors that are impacted by block limits:
		 *
		 * * Enter key never split a block-limit element;
		 * * Style application is constraint by the block limit of the current selection.
		 * * Pasted html will be inserted into the block limit of the current selection.
		 *
		 * **Note:** As an exception `<li>` is not considered as a block limit, as it's generally used as a text block.
		 */
		$blockLimit: {
			article: 1, aside: 1, audio: 1, body: 1, caption: 1, details: 1, dir: 1, div: 1, dl: 1,
			fieldset: 1, figcaption: 1, figure: 1, footer: 1, form: 1, header: 1, hgroup: 1, main: 1, menu: 1, nav: 1,
			ol: 1, section: 1, table: 1, td: 1, th: 1, tr: 1, ul: 1, video: 1
		},

		/**
		 * List of elements that contain character data.
		 */
		$cdata: { script: 1, style: 1 },

		/**
		 * List of elements that are accepted as inline editing hosts.
		 */
		$editable: {
			address: 1, article: 1, aside: 1, blockquote: 1, body: 1, details: 1, div: 1, fieldset: 1,
			figcaption: 1, footer: 1, form: 1, h1: 1, h2: 1, h3: 1, h4: 1, h5: 1, h6: 1, header: 1, hgroup: 1,
			main: 1, nav: 1, p: 1, pre: 1, section: 1
		},

		/**
		 * List of empty (self-closing) elements, like `<br>` or `<img>`.
		 */
		$empty: {
			area: 1, base: 1, basefont: 1, br: 1, col: 1, command: 1, dialog: 1, embed: 1, hr: 1, img: 1,
			input: 1, isindex: 1, keygen: 1, link: 1, meta: 1, param: 1, source: 1, track: 1, wbr: 1
		},

		/**
		 * List of inline (`<span>` like) elements.
		 */
		$inline: P,

		/**
		 * List of list root elements.
		 */
		$list: { dl: 1, ol: 1, ul: 1 },

		/**
		 * List of list item elements, like `<li>` or `<dd>`.
		 */
		$listItem: { dd: 1, dt: 1, li: 1 },

		/**
		 * List of elements which may live outside body.
		 */
		$nonBodyContent: X( { body: 1, head: 1, html: 1 }, dtd.head ),

		/**
		 * Elements that accept text nodes, but are not possible to edit into the browser.
		 */
		$nonEditable: {
			applet: 1, audio: 1, button: 1, embed: 1, iframe: 1, map: 1, object: 1, option: 1,
			param: 1, script: 1, textarea: 1, video: 1
		},

		/**
		 * Elements that are considered objects, therefore selected as a whole in the editor.
		 */
		$object: {
			applet: 1, audio: 1, button: 1, hr: 1, iframe: 1, img: 1, input: 1, object: 1, select: 1,
			table: 1, textarea: 1, video: 1
		},

		/**
		 * List of elements that can be ignored if empty, like `<b>` or `<span>`.
		 */
		$removeEmpty: {
			abbr: 1, acronym: 1, b: 1, bdi: 1, bdo: 1, big: 1, cite: 1, code: 1, del: 1, dfn: 1,
			em: 1, font: 1, i: 1, ins: 1, label: 1, kbd: 1, mark: 1, meter: 1, output: 1, q: 1, ruby: 1, s: 1,
			samp: 1, small: 1, span: 1, strike: 1, strong: 1, sub: 1, sup: 1, time: 1, tt: 1, u: 1, 'var': 1
		},

		/**
		 * List of elements that have tabindex set to zero by default.
		 */
		$tabIndex: { a: 1, area: 1, button: 1, input: 1, object: 1, select: 1, textarea: 1 },

		/**
		 * List of elements used inside the `<table>` element, like `<tbody>` or `<td>`.
		 */
		$tableContent: { caption: 1, col: 1, colgroup: 1, tbody: 1, td: 1, tfoot: 1, th: 1, thead: 1, tr: 1 },

		/**
		 * List of "transparent" elements. See [W3C's definition of "transparent" element](http://dev.w3.org/html5/markup/terminology.html#transparent).
		 */
		$transparent: { a: 1, audio: 1, canvas: 1, del: 1, ins: 1, map: 1, noscript: 1, object: 1, video: 1 },

		/**
		 * List of elements that are not to exist standalone that must live under it's parent element.
		 */
		$intermediate: {
			caption: 1, colgroup: 1, dd: 1, dt: 1, figcaption: 1, legend: 1, li: 1, optgroup: 1,
			option: 1, rp: 1, rt: 1, summary: 1, tbody: 1, td: 1, tfoot: 1, th: 1, thead: 1, tr: 1
		}
	} );

	return dtd;
} )();

// PACKAGER_RENAME( CKEDITOR.dtd )