axe-core/lib/commons/aria/index.js

Accessibility engine for automated Web UI testing

/**
 * Namespace for aria-related utilities.
 * @namespace commons.aria
 * @memberof axe
 */

var aria = commons.aria = {},
	lookupTable = aria.lookupTable = {};

lookupTable.attributes = {
	'aria-activedescendant': {
		type: 'idref'
	},
	'aria-atomic': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-autocomplete': {
		type: 'nmtoken',
		values: ['inline', 'list', 'both', 'none']
	},
	'aria-busy': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-checked': {
		type: 'nmtoken',
		values: ['true', 'false', 'mixed', 'undefined']
	},
	'aria-colcount': {
		type: 'int'
	},
	'aria-colindex': {
		type: 'int'
	},
	'aria-colspan': {
		type: 'int'
	},
	'aria-controls': {
		type: 'idrefs'
	},
	'aria-current': {
		type: 'nmtoken',
		values: ['page', 'step', 'location', 'date', 'time', 'true', 'false']
	},
	'aria-describedby': {
		type: 'idrefs'
	},
	'aria-disabled': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-dropeffect': {
		type: 'nmtokens',
		values: ['copy', 'move', 'reference', 'execute', 'popup', 'none']
	},
	'aria-errormessage': {
		type: 'idref'
	},
	'aria-expanded': {
		type: 'nmtoken',
		values: ['true', 'false', 'undefined']
	},
	'aria-flowto': {
		type: 'idrefs'
	},
	'aria-grabbed': {
		type: 'nmtoken',
		values: ['true', 'false', 'undefined']
	},
	'aria-haspopup': {
		type: 'nmtoken',
		values: ['true', 'false', 'menu', 'listbox', 'tree', 'grid', 'dialog']
	},
	'aria-hidden': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-invalid': {
		type: 'nmtoken',
		values: ['true', 'false', 'spelling', 'grammar']
	},
	'aria-keyshortcuts': {
		type: 'string'
	},
	'aria-label': {
		type: 'string'
	},
	'aria-labelledby': {
		type: 'idrefs',
		values: ['']
	},
	'aria-level': {
		type: 'int'
	},
	'aria-live': {
		type: 'nmtoken',
		values: ['off', 'polite', 'assertive']
	},
	'aria-modal': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-multiline': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-multiselectable': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-orientation' : {
		type : 'nmtoken',
		values : ['horizontal', 'vertical']
	},
	'aria-owns': {
		type: 'idrefs'
	},
	'aria-placeholder': {
		type: 'string'
	},
	'aria-posinset': {
		type: 'int'
	},
	'aria-pressed': {
		type: 'nmtoken',
		values: ['true', 'false', 'mixed', 'undefined']
	},
	'aria-readonly': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-relevant': {
		type: 'nmtokens',
		values: ['additions', 'removals', 'text', 'all']
	},
	'aria-required': {
		type: 'boolean',
		values: ['true', 'false']
	},
	'aria-rowcount': {
		type: 'int'
	},
	'aria-rowindex': {
		type: 'int'
	},
	'aria-rowspan': {
		type: 'int'
	},
	'aria-selected': {
		type: 'nmtoken',
		values: ['true', 'false', 'undefined']
	},
	'aria-setsize': {
		type: 'int'
	},
	'aria-sort': {
		type: 'nmtoken',
		values: ['ascending', 'descending', 'other', 'none']
	},
	'aria-valuemax': {
		type: 'decimal'
	},
	'aria-valuemin': {
		type: 'decimal'
	},
	'aria-valuenow': {
		type: 'decimal'
	},
	'aria-valuetext': {
		type: 'string'
	}
};

lookupTable.globalAttributes = [
	'aria-atomic', 'aria-busy', 'aria-controls', 'aria-current', 'aria-describedby',
	'aria-disabled', 'aria-dropeffect', 'aria-flowto', 'aria-grabbed',
	'aria-haspopup', 'aria-hidden', 'aria-invalid', 'aria-keyshortcuts', 'aria-label',
	'aria-labelledby', 'aria-live', 'aria-owns', 'aria-relevant'
];

lookupTable.role = {
	'alert': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'alertdialog': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded', 'aria-modal']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'application': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'article': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded', 'aria-posinset', 'aria-setsize']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['article']
	},
	'banner': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['header']
	},
	'button': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded', 'aria-pressed']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
		implicit: ['button', 'input[type="button"]', 'input[type="image"]', 'input[type="reset"]', 'input[type="submit"]', 'summary']
	},
	'cell': {
		type: 'structure',
		attributes: {
			allowed: ['aria-colindex', 'aria-colspan', 'aria-rowindex', 'aria-rowspan']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['row'],
		implicit: ['td', 'th']
	},
	'checkbox': {
		type: 'widget',
		attributes:  {
			allowed: ['aria-checked', 'aria-required']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
		implicit: ['input[type="checkbox"]']
	},
	'columnheader': {
		type: 'structure',
		attributes: {
			allowed: ['aria-colindex', 'aria-colspan', 'aria-expanded', 'aria-rowindex', 'aria-rowspan',
				'aria-required', 'aria-readonly', 'aria-selected', 'aria-sort']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['row'],
		implicit: ['th']
	},
	'combobox': {
		type: 'composite',
		attributes:  {
			allowed: ['aria-expanded', 'aria-autocomplete', 'aria-required', 'aria-activedescendant', 'aria-orientation']
		},
		owned: {
			all: ['listbox', 'textbox']
		},
		nameFrom: ['author'],
		context: null
	},
	'command': {
		nameFrom: ['author'],
		type: 'abstract'
	},
	'complementary': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['aside']
	},
	'composite': {
		nameFrom: ['author'],
		type: 'abstract'
	},
	'contentinfo': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['footer']
	},
	'definition': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['dd', 'dfn']
	},
	'dialog': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded', 'aria-modal']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['dialog']
	},
	'directory': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null
	},
	'document': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['body']
	},
	'doc-abstract': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
	},
	'doc-acknowledgments': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
	},
	'doc-afterword': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
	},
	'doc-appendix': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
	},
	'doc-backlink': {
		type: 'link',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
	},
	'doc-biblioentry': {
		type: 'listitem',
		attributes: {
			allowed: ['aria-expanded', 'aria-level', 'aria-posinset', 'aria-setsize']
		},
		owned: null,
		nameFrom: ['author'],
		context: ['doc-bibliography'],
	},
	'doc-bibliography': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
	},
	'doc-biblioref': {
		type: 'link',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
	},
	'doc-chapter': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-colophon': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-conclusion': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-cover': {
		type: 'img',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-credit': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-credits': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-dedication': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-endnote': {
		type: 'listitem',
		attributes: {
			allowed: ['aria-expanded', 'aria-level', 'aria-posinset', 'aria-setsize']
		},
		owned: null,
		namefrom: ['author'],
		context: ['doc-endnotes'],
	},
	'doc-endnotes': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: ['doc-endnote'],
		namefrom: ['author'],
		context: null,
	},
	'doc-epigraph': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-epilogue': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-errata': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-example': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-footnote': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-foreword': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-glossary': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: ['term', 'definition'],
		namefrom: ['author'],
		context: null,
	},
	'doc-glossref': {
		type: 'link',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author', 'contents'],
		context: null,
	},
	'doc-index': {
		type: 'navigation',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-introduction': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-noteref': {
		type: 'link',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author', 'contents'],
		context: null,
	},
	'doc-notice': {
		type: 'note',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-pagebreak': {
		type: 'separator',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-pagelist': {
		type: 'navigation',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-part': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-preface': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-prologue': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-pullquote': {
		type: 'none',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-qna': {
		type: 'section',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-subtitle': {
		type: 'sectionhead',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-tip': {
		type: 'note',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'doc-toc': {
		type: 'navigation',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		namefrom: ['author'],
		context: null,
	},
	'feed': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: {
			one: ['article']
		},
		nameFrom: ['author'],
		context: null
	},
	'form': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['form']
	},
	'grid': {
		type: 'composite',
		attributes: {
			allowed: ['aria-activedescendant', 'aria-expanded', 'aria-colcount', 'aria-level',
				'aria-multiselectable', 'aria-readonly', 'aria-rowcount']
		},
		owned: {
			one: ['rowgroup', 'row']
		},
		nameFrom: ['author'],
		context: null,
		implicit: ['table']
	},
	'gridcell': {
		type: 'widget',
		attributes: {
			allowed: ['aria-colindex', 'aria-colspan', 'aria-expanded', 'aria-rowindex',
				'aria-rowspan', 'aria-selected', 'aria-readonly', 'aria-required']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['row'],
		implicit: ['td', 'th']
	},
	'group': {
		type: 'structure',
		attributes: {
			allowed: ['aria-activedescendant', 'aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['details', 'optgroup']
	},
	'heading': {
		type: 'structure',
		attributes: {
			required: ['aria-level'],
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
		implicit: ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']
	},
	'img': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['img']
	},
	'input': {
		nameFrom: ['author'],
		type: 'abstract'
	},
	'landmark': {
		nameFrom: ['author'],
		type: 'abstract'
	},
	'link': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: null,
		implicit: ['a[href]']
	},
	'list': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: {
			all: ['listitem']
		},
		nameFrom: ['author'],
		context: null,
		implicit: ['ol', 'ul', 'dl']
	},
	'listbox': {
		type: 'composite',
		attributes: {
			allowed: ['aria-activedescendant', 'aria-multiselectable', 'aria-required', 'aria-expanded', 'aria-orientation']
		},
		owned: {
			all: ['option']
		},
		nameFrom: ['author'],
		context: null,
		implicit: ['select']
	},
	'listitem': {
		type: 'structure',
		attributes: {
			allowed: ['aria-level', 'aria-posinset', 'aria-setsize', 'aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['list'],
		implicit: ['li', 'dt']
	},
	'log': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'main': {
		type: 'landmark',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['main']
	},
	'marquee': {
		type: 'widget',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'math': {
		type: 'structure',
		attributes: {
			allowed: ['aria-expanded']
		},
		owned: null,
		nameFrom: ['author'],
		context: null,
		implicit: ['math']
	},
	'menu': {
		type: 'composite',
		attributes: {
			allowed: ['aria-activedescendant', 'aria-expanded', 'aria-orientation']
		},
		owned: {
			one: ['menuitem', 'menuitemradio', 'menuitemcheckbox']
		},
		nameFrom: ['author'],
		context: null,
		implicit: ['menu[type="context"]']
	},
	'menubar': {
		type: 'composite',
		attributes: {
			allowed: ['aria-activedescendant', 'aria-expanded', 'aria-orientation']
		},
		owned: null,
		nameFrom: ['author'],
		context: null
	},
	'menuitem': {
		type: 'widget',
		attributes: {
			allowed: ['aria-posinset', 'aria-setsize', 'aria-expanded']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['menu', 'menubar'],
		implicit: ['menuitem[type="command"]']
	},
	'menuitemcheckbox': {
		type: 'widget',
		attributes: {
			allowed: ['aria-checked', 'aria-posinset', 'aria-setsize']
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['menu', 'menubar'],
		implicit: ['menuitem[type="checkbox"]']
	},
	'menuitemradio': {
		type: 'widget',
		attributes:  {
			allowed: ['aria-checked', 'aria-selected', 'aria-posinset', 'aria-setsize'],
		},
		owned: null,
		nameFrom: ['author', 'contents'],
		context: ['menu', 'menubar'],
		implicit: ['menuitem[type="radio"]']
	},
	'navigation': {
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