feat: add a11y `role-supports-aria-props` (#8195)

#820

---------

Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>

site/content/docs/06-accessibility-warnings.md

@@ -308,6 +308,20 @@ Elements with ARIA roles must have all required attributes for that role.
 
 ---
 
+### `a11y-role-supports-aria-props`
+
+Elements with explicit or implicit roles defined contain only `aria-*` properties supported by that role.
+
+```sv
+<!-- A11y: The attribute 'aria-multiline' is not supported by the role 'link'. -->
+<div role="link" aria-multiline />
+
+<!-- A11y: The attribute 'aria-required' is not supported by the role 'listitem'. This role is implicit on the element <li>. -->
+<li aria-required />
+```
+
+---
+
 ### `a11y-structure`
 
 Enforce that certain DOM elements have the correct structure.

src/compiler/compile/compiler_warnings.ts

@@ -123,6 +123,17 @@ export default {
 		code: 'a11y-role-has-required-aria-props',
 		message: `A11y: Elements with the ARIA role "${role}" must have the following attributes defined: ${props.map(name => `"${name}"`).join(', ')}`
 	}),
+  a11y_role_supports_aria_props: (attribute: string, role: string, is_implicit: boolean, name: string) => {
+    let message = `The attribute '${attribute}' is not supported by the role '${role}'.`;
+    if (is_implicit) {
+      message += ` This role is implicit on the element <${name}>.`;
+    }
+
+    return {
+      code: 'a11y-role-supports-aria-props',
+      message: `A11y: ${message}`
+    };
+  },
 	a11y_accesskey: {
 		code: 'a11y-accesskey',
 		message: 'A11y: Avoid using accesskey'

src/compiler/compile/nodes/Element.ts

@@ -82,11 +82,15 @@ const a11y_nested_implicit_semantics = new Map([
 
 const a11y_implicit_semantics = new Map([
 	['a', 'link'],
+	['area', 'link'],
+	['article', 'article'],
 	['aside', 'complementary'],
 	['body', 'document'],
+	['button', 'button'],
 	['datalist', 'listbox'],
 	['dd', 'definition'],
 	['dfn', 'term'],
+	['dialog', 'dialog'],
 	['details', 'group'],
 	['dt', 'term'],
 	['fieldset', 'group'],
@@ -98,10 +102,14 @@ const a11y_implicit_semantics = new Map([
 	['h5', 'heading'],
 	['h6', 'heading'],
 	['hr', 'separator'],
+	['img', 'img'],
 	['li', 'listitem'],
+	['link', 'link'],
 	['menu', 'list'],
+	['meter', 'progressbar'],
 	['nav', 'navigation'],
 	['ol', 'list'],
+	['option', 'option'],
 	['optgroup', 'group'],
 	['output', 'status'],
 	['progress', 'progressbar'],
@@ -115,6 +123,61 @@ const a11y_implicit_semantics = new Map([
 	['ul', 'list']
 ]);
 
+const menuitem_type_to_implicit_role = new Map([
+  ['command', 'menuitem'],
+  ['checkbox', 'menuitemcheckbox'],
+  ['radio', 'menuitemradio']
+]);
+
+const input_type_to_implicit_role = new Map([
+  ['button', 'button'],
+  ['image', 'button'],
+  ['reset', 'button'],
+  ['submit', 'button'],
+  ['checkbox', 'checkbox'],
+  ['radio', 'radio'],
+  ['range', 'slider'],
+  ['number', 'spinbutton'],
+  ['email', 'textbox'],
+  ['search', 'searchbox'],
+  ['tel', 'textbox'],
+  ['text', 'textbox'],
+  ['url', 'textbox']
+]);
+
+const combobox_if_list = new Set(['email', 'search', 'tel', 'text', 'url']);
+
+function input_implicit_role(attribute_map: Map<string, Attribute>) {
+  const type_attribute = attribute_map.get('type');
+  if (!type_attribute || !type_attribute.is_static) return;
+  const type = type_attribute.get_static_value() as string;
+
+  const list_attribute_exists = attribute_map.has('list');
+
+  if (list_attribute_exists && combobox_if_list.has(type)) {
+	return 'combobox';
+  }
+
+  return input_type_to_implicit_role.get(type);
+}
+
+function menuitem_implicit_role(attribute_map: Map<string, Attribute>) {
+  const type_attribute = attribute_map.get('type');
+  if (!type_attribute || !type_attribute.is_static) return;
+  const type = type_attribute.get_static_value() as string;
+  return menuitem_type_to_implicit_role.get(type);
+}
+
+function get_implicit_role(name: string, attribute_map: Map<string, Attribute>) : (string | undefined) {
+  if (name === 'menuitem') {
+	return menuitem_implicit_role(attribute_map);
+  } else if (name === 'input') {
+	return input_implicit_role(attribute_map);
+  } else {
+	return a11y_implicit_semantics.get(name);
+  }
+}
+
 const invisible_elements = new Set(['meta', 'html', 'script', 'style']);
 
 const valid_modifiers = new Set([
@@ -511,7 +574,7 @@ export default class Element extends Node {
 						}
 
 						// no-redundant-roles
-						const has_redundant_role = current_role === a11y_implicit_semantics.get(this.name);
+						const has_redundant_role = current_role === get_implicit_role(this.name, attribute_map);
 
 						if (this.name === current_role || has_redundant_role) {
 							component.warn(attribute, compiler_warnings.a11y_no_redundant_roles(current_role));
@@ -605,6 +668,23 @@ export default class Element extends Node {
 				component.warn(this, compiler_warnings.a11y_no_noninteractive_tabindex);
 			}
 		}
+
+		// role-supports-aria-props
+		const role = attribute_map.get('role');
+		const role_value = (role ? role.get_static_value() : get_implicit_role(this.name, attribute_map)) as ARIARoleDefintionKey;
+		if (typeof role_value === 'string' && roles.has(role_value)) {
+			const { props } = roles.get(role_value);
+			const invalid_aria_props = new Set(aria.keys().filter(attribute => !(attribute in props)));
+			const is_implicit = role_value && role === undefined;
+
+			attributes
+				.filter(prop => prop.type !== 'Spread')
+				.forEach(prop => {
+					if (invalid_aria_props.has(prop.name as ARIAProperty)) {
+						component.warn(prop, compiler_warnings.a11y_role_supports_aria_props(prop.name, role_value, is_implicit, this.name));
+					}
+				});
+		}
 	}
 
 	validate_special_cases() {

test/validator/samples/a11y-role-has-required-aria-props/input.svelte

@@ -8,4 +8,3 @@
 <div role="meter" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
 <div role="scrollbar" aria-controls="panel" aria-valuenow="50"></div>
 <input role="switch" type="checkbox" />
-<input role="radio" type="radio" />

test/validator/samples/a11y-role-supports-aria-props/input.svelte

@@ -0,0 +1,371 @@
+<!-- INVALID -->
+<a aria-setsize="0" href="/">Link</a>
+<area aria-pressed alt="" />
+<article aria-autocomplete="inline" />
+<aside aria-modal />
+<body aria-invalid />
+<button aria-valuemax="0" />
+<datalist aria-valuenow="0" />
+<dd aria-rowindex="0" />
+<dfn aria-colcount="0" />
+<dialog aria-posinset="0" />
+<details aria-orientation="undefined" />
+<dt aria-valuemin="0" />
+<fieldset aria-orientation="undefined" />
+<form aria-disabled />
+<h1 aria-selected>H1</h1>
+<h2 aria-selected>H2</h2>
+<h3 aria-expanded>H3</h3>
+<h4 aria-valuemin="0">H4</h4>
+<h5 aria-readonly>H5</h5>
+<h6 aria-valuemin="0">H6</h6>
+<hr aria-required />
+<img aria-level="0" alt="invalid aria" />
+<li aria-required />
+<link aria-rowcount="0" />
+<menu aria-valuemin="0" />
+<meter aria-colspan="0" />
+<nav aria-valuetext="" />
+<ol aria-sort="none" />
+<option aria-invalid />
+<optgroup aria-sort="none" />
+<output aria-multiline />
+<progress aria-rowcount="0" />
+<section aria-invalid />
+<summary aria-rowcount="0" />
+<tbody aria-colspan="0" />
+<textarea aria-valuenow="0" />
+<tfoot aria-required />
+<thead aria-valuemin="0" />
+<tr aria-pressed />
+<ul aria-multiselectable />
+
+<div role="alert" aria-colspan="0" />
+<div role="alertdialog" aria-autocomplete="inline" />
+<div role="application" aria-required />
+<div role="article" aria-multiline />
+<div role="banner" aria-autocomplete="inline" />
+<div role="blockquote" aria-valuetext="" />
+<div role="button" aria-colspan="0" />
+<div role="caption" aria-setsize="0" />
+<div role="cell" aria-multiline />
+<div role="checkbox" aria-multiline aria-checked />
+<div role="code" aria-invalid />
+<div role="columnheader" aria-colcount="0" />
+<div role="combobox" aria-multiselectable aria-controls={[]} aria-expanded />
+<div role="complementary" aria-readonly />
+<div role="contentinfo" aria-valuetext="" />
+<div role="definition" aria-multiline />
+<div role="deletion" aria-expanded />
+<div role="dialog" aria-multiline />
+<div role="directory" aria-rowcount="0" />
+<div role="document" aria-valuemin="0" />
+<div role="emphasis" aria-rowindex="0" />
+<div role="feed" aria-colindex="0" />
+<div role="figure" aria-valuemax="0" />
+<div role="form" aria-readonly />
+<div role="generic" aria-valuemax="0" />
+<div role="grid" aria-checked />
+<div role="gridcell" aria-level="0" />
+<div role="group" aria-colspan="0" />
+<div role="heading" aria-activedescendant="id" tabindex="-1" aria-level="0" />
+<div role="insertion" aria-errormessage="error" />
+<div role="link" aria-multiline />
+<div role="list" aria-selected />
+<div role="listbox" aria-haspopup />
+<div role="listitem" aria-activedescendant="id" tabindex="-1" />
+<div role="log" aria-required />
+<div role="main" aria-sort="none" />
+<div role="marquee" aria-autocomplete="inline" />
+<div role="math" aria-multiline />
+<div role="menu" aria-checked />
+<div role="menubar" aria-errormessage="error" />
+<div role="menuitem" aria-checked />
+<div role="menuitemcheckbox" aria-pressed aria-checked="false" />
+<div role="menuitemradio" aria-rowspan="0" aria-checked="false" />
+<div role="meter" aria-valuenow="0" aria-haspopup />
+<div role="navigation" aria-expanded />
+<div role="none" aria-placeholder="" />
+<div role="note" aria-modal />
+<div role="option" aria-selected aria-valuemax="0" />
+<div role="paragraph" aria-level="0" />
+<div role="presentation" aria-disabled />
+<div role="progressbar" aria-expanded />
+<div role="radio" aria-checked aria-rowindex="0" />
+<div role="radiogroup" aria-valuenow="0" />
+<div role="region" aria-rowspan="0" />
+<div role="row" aria-required />
+<div role="rowgroup" aria-expanded />
+<div role="rowheader" aria-activedescendant="id" tabindex="0" />
+<div role="scrollbar" aria-controls={[]} aria-valuenow="0" aria-rowspan="0" />
+<div role="search" aria-autocomplete="inline" />
+<div role="searchbox" aria-colindex="0" />
+<div role="separator" aria-sort="none" />
+<div role="slider" aria-valuenow="0" aria-placeholder="" />
+<div role="spinbutton" aria-posinset="0" />
+<div role="status" aria-valuemin="0" />
+<div role="strong" aria-valuemin="0" />
+<div role="subscript" aria-colcount="0" />
+<div role="superscript" aria-level="0" />
+<div role="switch" aria-checked aria-valuenow="0" />
+<div role="tab" aria-required />
+<div role="table" aria-modal />
+<div role="tablist" aria-setsize="0" />
+<div role="tabpanel" aria-multiselectable />
+<div role="term" aria-posinset="0" />
+<div role="textbox" aria-colspan="0" />
+<div role="time" aria-selected />
+<div role="timer" aria-sort="none" />
+<div role="toolbar" aria-valuetext="" />
+<div role="tooltip" aria-multiline />
+<div role="tree" aria-expanded />
+<div role="treegrid" aria-level="0" />
+<div role="treeitem" aria-selected aria-activedescendant="id" tabindex="-1" />
+<div role="doc-abstract" aria-colindex="0" />
+<div role="doc-acknowledgments" aria-setsize="0" />
+<div role="doc-afterword" aria-modal />
+<div role="doc-appendix" aria-activedescendant="id" tabindex="-1" />
+<div role="doc-backlink" aria-colspan="0" />
+<div role="doc-biblioentry" aria-valuemax="0" />
+<div role="doc-bibliography" aria-level="0" />
+<div role="doc-biblioref" aria-checked />
+<div role="doc-chapter" aria-required />
+<div role="doc-colophon" aria-setsize="0" />
+<div role="doc-conclusion" aria-colindex="0" />
+<div role="doc-cover" aria-modal />
+<div role="doc-credit" aria-selected />
+<div role="doc-credits" aria-orientation="undefined" />
+<div role="doc-dedication" aria-level="0" />
+<div role="doc-endnote" aria-checked />
+<div role="doc-endnotes" aria-colcount="0" />
+<div role="doc-epigraph" aria-multiline />
+<div role="doc-epilogue" aria-colcount="0" />
+<div role="doc-errata" aria-sort="none" />
+<div role="doc-example" aria-multiselectable />
+<div role="doc-footnote" aria-rowcount="0" />
+<div role="doc-foreword" aria-valuenow="0" />
+<div role="doc-glossary" aria-valuetext="" />
+<div role="doc-glossref" aria-placeholder="" />
+<div role="doc-index" aria-rowcount="0" />
+<div role="doc-introduction" aria-pressed />
+<div role="doc-noteref" aria-valuenow="0" />
+<div role="doc-notice" aria-selected />
+<div role="doc-pagebreak" aria-rowcount="0" />
+<div role="doc-pagelist" aria-modal />
+<div role="doc-part" aria-setsize="0" />
+<div role="doc-preface" aria-orientation="undefined" />
+<div role="doc-prologue" aria-required />
+<div role="doc-pullquote" aria-rowcount="0" />
+<div role="doc-qna" aria-setsize="0" />
+<div role="doc-subtitle" aria-rowindex="0" />
+<div role="doc-tip" aria-valuenow="0" />
+<div role="doc-toc" aria-posinset="0" />
+
+<!-- input and menuitem have different implicit roles based on different type attributes, and thus different valid and invalid props -->
+<!-- INVALID -->
+<input type="text" aria-rowspan="0" /> <!-- implicit role: textbox -->
+<input type="tel" aria-pressed /> <!-- implicit role: textbox -->
+<input type="url" aria-level="0" /> <!-- implicit role: textbox -->
+<input type="email" aria-pressed /> <!-- implicit role: textbox -->
+<input type="search" aria-valuetext="text" /> <!-- implicit role: searchbox -->
+<input type="text" list={['id']} aria-valuemin="0" /> <!-- implicit role: combobox -->
+<input type="tel" list={['id']} aria-colspan="0" /> <!-- implicit role: combobox -->
+<input type="url" list={['id']} aria-posinset="0" /> <!-- implicit role: combobox -->
+<input type="email" list={['id']} aria-modal /> <!-- implicit role: combobox -->
+<input type="search" list={['id']} aria-rowindex="0" /> <!-- implicit role: combobox -->
+<input type="image" alt="some text" aria-valuemax="0" /> <!-- implicit role: button -->
+<input type="reset" aria-modal /> <!-- implicit role: button -->
+<input type="submit" aria-placeholder="placeholder" /> <!-- implicit role: button -->
+<input type="checkbox" aria-rowindex="0" /> <!-- implicit role: checkbox -->
+<input type="radio" aria-valuetext="text" /> <!-- implicit role: radio -->
+<input type="range" aria-checked /> <!-- implicit role: slider -->
+<menuitem type="command" aria-colindex="0" /> <!-- implicit role: menuitem -->
+<menuitem type="checkbox" aria-colcount="0" /> <!-- implicit role: menuitemcheckbox -->
+<menuitem type="radio" aria-placeholder="placeholder" /> <!-- implicit role: menuitemradio -->
+
+<!-- VALID -->
+<a aria-keyshortcuts="" href="/">Link</a>
+<area aria-expanded alt="" />
+<article aria-dropeffect="none" />
+<aside aria-keyshortcuts="" />
+<body aria-labelledby="id" />
+<button aria-hidden />
+<datalist aria-activedescendant="id" tabindex="0" />
+<dd aria-labelledby="id" />
+<dfn aria-details="id" />
+<dialog aria-keyshortcuts="" />
+<details aria-keyshortcuts="" />
+<dt aria-hidden />
+<fieldset aria-owns="id" />
+<form aria-keyshortcuts="" />
+<h1 aria-keyshortcuts="">H1</h1>
+<h2 aria-controls={[]}>H2</h2>
+<h3 aria-controls={[]}>H3</h3>
+<h4 aria-details="id">H4</h4>
+<h5 aria-grabbed>H5</h5>
+<h6 aria-grabbed>H6</h6>
+<hr aria-relevant="all" />
+<img aria-flowto="id" alt="Valid aria role" />
+<li aria-label="" />
+<link aria-hidden />
+<menu aria-roledescription="" />
+<meter aria-valuemin="0" />
+<nav aria-labelledby="id" />
+<ol aria-grabbed />
+<option aria-selected />
+<optgroup aria-hidden />
+<output aria-dropeffect="none" />
+<progress aria-hidden />
+<section aria-details="id" />
+<summary aria-controls={[]} />
+<tbody aria-controls={[]} />
+<textarea aria-busy />
+<tfoot aria-labelledby="id" />
+<thead aria-flowto="id" />
+<tr aria-describedby="id" />
+<ul aria-dropeffect="none" />
+
+<div role="alert" aria-owns="id" />
+<div role="alertdialog" aria-busy />
+<div role="application" aria-invalid />
+<div role="article" aria-atomic />
+<div role="banner" aria-grabbed />
+<div role="blockquote" aria-busy />
+<div role="button" aria-busy />
+<div role="caption" aria-grabbed />
+<div role="cell" aria-rowindex="0" />
+<div role="checkbox" aria-checked aria-details="id" />
+<div role="code" aria-keyshortcuts="" />
+<div role="columnheader" aria-rowspan="0" />
+<div role="combobox" aria-invalid aria-controls={[]} aria-expanded />
+<div role="complementary" aria-label="" />
+<div role="contentinfo" aria-dropeffect="none" />
+<div role="definition" aria-grabbed />
+<div role="deletion" aria-busy />
+<div role="dialog" aria-flowto="id" />
+<div role="directory" aria-controls={[]} />
+<div role="document" aria-grabbed />
+<div role="emphasis" aria-atomic />
+<div role="feed" aria-atomic />
+<div role="figure" aria-busy />
+<div role="form" aria-roledescription="" />
+<div role="generic" aria-current />
+<div role="grid" aria-busy />
+<div role="gridcell" aria-relevant="all" />
+<div role="group" aria-busy />
+<div role="heading" aria-level="" aria-flowto="id" />
+<div role="img" aria-grabbed />
+<div role="insertion" aria-roledescription="" />
+<div role="link" aria-owns="id" />
+<div role="list" aria-labelledby="id" />
+<div role="listbox" aria-current />
+<div role="listitem" aria-controls={[]} />
+<div role="log" aria-controls={[]} />
+<div role="main" aria-keyshortcuts="" />
+<div role="marquee" aria-labelledby="id" />
+<div role="math" aria-labelledby="id" />
+<div role="menu" aria-atomic />
+<div role="menubar" aria-grabbed />
+<div role="menuitem" aria-grabbed />
+<div role="menuitemcheckbox" aria-checked aria-controls={[]} />
+<div role="menuitemradio" aria-checked aria-grabbed />
+<div role="meter" aria-valuenow="0" aria-valuetext="" />
+<div role="navigation" aria-controls={[]} />
+<div role="none" undefined />
+<div role="note" aria-hidden />
+<div role="option" aria-selected aria-describedby="id" />
+<div role="paragraph" aria-grabbed />
+<div role="presentation" aria-relevant="all" />
+<div role="progressbar" aria-valuemin="0" />
+<div role="radio" aria-checked aria-roledescription="" />
+<div role="radiogroup" aria-required />
+<div role="region" aria-roledescription="" />
+<div role="row" aria-posinset="0" />
+<div role="rowgroup" aria-busy />
+<div role="rowheader" aria-label="" />
+<div role="scrollbar" aria-controls={[]} aria-valuenow="0" aria-relevant="all" />
+<div role="search" aria-grabbed />
+<div role="searchbox" aria-dropeffect="none" />
+<div role="separator" aria-roledescription="" />
+<div role="slider" aria-valuenow="0" aria-relevant="all" />
+<div role="spinbutton" aria-required />
+<div role="status" aria-label="" />
+<div role="strong" aria-keyshortcuts="" />
+<div role="subscript" aria-keyshortcuts="" />
+<div role="superscript" aria-live="off" />
+<div role="switch" aria-checked aria-roledescription="" />
+<div role="tab" aria-flowto="id" />
+<div role="table" aria-rowcount="0" />
+<div role="tablist" aria-atomic />
+<div role="tabpanel" aria-labelledby="id" />
+<div role="term" aria-details="id" />
+<div role="textbox" aria-hidden />
+<div role="time" aria-label="" />
+<div role="timer" aria-hidden />
+<div role="toolbar" aria-roledescription="" />
+<div role="tooltip" aria-owns="id" />
+<div role="tree" aria-errormessage="error" />
+<div role="treegrid" aria-details="id" />
+<div role="treeitem" aria-selected="true" aria-dropeffect="none" />
+<div role="doc-abstract" aria-label="" />
+<div role="doc-acknowledgments" aria-controls={[]} />
+<div role="doc-afterword" aria-flowto="id" />
+<div role="doc-appendix" aria-describedby="id" />
+<div role="doc-backlink" aria-dropeffect="none" />
+<div role="doc-biblioentry" aria-roledescription="" />
+<div role="doc-bibliography" aria-labelledby="id" />
+<div role="doc-biblioref" aria-haspopup />
+<div role="doc-chapter" aria-controls={[]} />
+<div role="doc-colophon" aria-expanded />
+<div role="doc-conclusion" aria-dropeffect="none" />
+<div role="doc-cover" aria-controls={[]} />
+<div role="doc-credit" aria-haspopup />
+<div role="doc-credits" aria-describedby="id" />
+<div role="doc-dedication" aria-roledescription="" />
+<div role="doc-endnote" aria-errormessage="error" />
+<div role="doc-endnotes" aria-owns="id" />
+<div role="doc-epigraph" aria-controls={[]} />
+<div role="doc-epilogue" aria-relevant="all" />
+<div role="doc-errata" aria-keyshortcuts="" />
+<div role="doc-example" aria-invalid />
+<div role="doc-footnote" aria-labelledby="id" />
+<div role="doc-foreword" aria-expanded />
+<div role="doc-glossary" aria-grabbed />
+<div role="doc-glossref" aria-haspopup />
+<div role="doc-index" aria-controls={[]} />
+<div role="doc-introduction" aria-labelledby="id" />
+<div role="doc-noteref" aria-details="id" />
+<div role="doc-notice" aria-owns="id" />
+<div role="doc-pagebreak" aria-owns="id" />
+<div role="doc-pagelist" aria-disabled />
+<div role="doc-part" aria-relevant="all" />
+<div role="doc-preface" aria-label="" />
+<div role="doc-prologue" aria-invalid />
+<div role="doc-pullquote" undefined />
+<div role="doc-qna" aria-errormessage="error" />
+<div role="doc-subtitle" aria-errormessage="error" />
+<div role="doc-tip" aria-owns="id" />
+<div role="doc-toc" aria-expanded />
+
+<!-- input and menuitem have different implicit roles based on different type attributes, and thus different valid and invalid props -->
+<!-- VALID -->
+<input type="text" aria-labelledby="id" /> <!-- implicit role: textbox -->
+<input type="tel" aria-readonly /> <!-- implicit role: textbox -->
+<input type="url" aria-errormessage="id" /> <!-- implicit role: textbox -->
+<input type="email" aria-details="id" /> <!-- implicit role: textbox -->
+<input type="searchbox" aria-owns="id" /> <!-- implicit role: searchbox -->
+<input type="text" list={['id']} aria-keyshortcuts="key" /> <!-- implicit role: combobox -->
+<input type="tel" list={['id']} aria-readonly /> <!-- implicit role: combobox -->
+<input type="url" list={['id']} aria-label="label" /> <!-- implicit role: combobox -->
+<input type="email" list={['id']} aria-activedescendant="id" /> <!-- implicit role: combobox -->
+<input type="search" list={['id']} aria-dropeffect="none" /> <!-- implicit role: combobox -->
+<input type="image" alt="some text" aria-pressed /> <!-- implicit role: button -->
+<input type="reset" aria-expanded /> <!-- implicit role: button -->
+<input type="submit" aria-disabled /> <!-- implicit role: button -->
+<input type="checkbox" aria-controls="id" /> <!-- implicit role: checkbox -->
+<input type="radio" aria-atomic /> <!-- implicit role: radio -->
+<input type="range" aria-hidden /> <!-- implicit role: slider -->
+<menuitem type="command" aria-live="off" /> <!-- implicit role: menuitem -->
+<menuitem type="checkbox" aria-relevant="all" /> <!-- implicit role: menuitemcheckbox -->
+<menuitem type="radio" aria-required /> <!-- implicit role: menuitemradio -->
+