Improve accessibility (part 4) (#4408)

* fix(dropdown_menu): Keyboard navigation

* fix(icon_button): Add aria-pressed attribute

* fix(privacy_dropdown): Make accessible

* fix(emoji_picker_dropdown): Make accessible

* fix(icon_button): Support tabIndex

* fix(actions_modal): Remove icon from tab order

* fix(dropdown_menu): Add role=group

* fix(setting_toggle): Toggle via space key

* fix(dropdown_menu): Remove redundant handling of Space key

* fix(emoji_picker_dropdown): Remove redundant Space key handling

* fix(privacy_dropdown): Remove redundant Space key handling

* fix(status): Switch to article and add aria-posinset, aria-setsize

* fix(status_list): Use role=feed and pass more ARIA props to Status

* chore(eslint): jsx-a11y/role-supports-aria-props

app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js

@@ -65,6 +65,22 @@ export default class EmojiPickerDropdown extends React.PureComponent {
     this.setState({ active: false });
   }
 
+  onToggle = (e) => {
+    if (!this.state.loading && (!e.key || e.key === 'Enter')) {
+      if (this.state.active) {
+        this.onHideDropdown();
+      } else {
+        this.onShowDropdown();
+      }
+    }
+  }
+
+  onEmojiPickerKeyDown = (e) => {
+    if (e.key === 'Escape') {
+      this.onHideDropdown();
+    }
+  }
+
   render () {
     const { intl } = this.props;
 
@@ -104,10 +120,11 @@ export default class EmojiPickerDropdown extends React.PureComponent {
     };
 
     const { active, loading } = this.state;
+    const title = intl.formatMessage(messages.emoji);
 
     return (
-      <Dropdown ref={this.setRef} className='emoji-picker__dropdown' onShow={this.onShowDropdown} onHide={this.onHideDropdown}>
-        <DropdownTrigger className='emoji-button' title={intl.formatMessage(messages.emoji)}>
+      <Dropdown ref={this.setRef} className='emoji-picker__dropdown' active={active && !loading} onShow={this.onShowDropdown} onHide={this.onHideDropdown}>
+        <DropdownTrigger className='emoji-button' title={title} aria-label={title} aria-pressed={active} role='button' onKeyDown={this.onToggle} tabIndex={0} >
           <img
             className={`emojione ${active && loading ? 'pulse-loading' : ''}`}
             alt='🙂'
@@ -118,7 +135,7 @@ export default class EmojiPickerDropdown extends React.PureComponent {
         <DropdownContent className='dropdown__left'>
           {
             this.state.active && !this.state.loading &&
-            (<EmojiPicker emojione={settings} onChange={this.handleChange} searchPlaceholder={intl.formatMessage(messages.emoji_search)} categories={categories} search />)
+            (<EmojiPicker emojione={settings} onChange={this.handleChange} searchPlaceholder={intl.formatMessage(messages.emoji_search)} onKeyDown={this.onEmojiPickerKeyDown} categories={categories} search />)
           }
         </DropdownContent>
       </Dropdown>

app/javascript/mastodon/features/compose/components/privacy_dropdown.js

@@ -60,10 +60,14 @@ export default class PrivacyDropdown extends React.PureComponent {
   }
 
   handleClick = (e) => {
-    const value = e.currentTarget.getAttribute('data-index');
-    e.preventDefault();
-    this.setState({ open: false });
-    this.props.onChange(value);
+    if (e.key === 'Escape') {
+      this.setState({ open: false });
+    } else if (!e.key || e.key === 'Enter') {
+      const value = e.currentTarget.getAttribute('data-index');
+      e.preventDefault();
+      this.setState({ open: false });
+      this.props.onChange(value);
+    }
   }
 
   onGlobalClick = (e) => {
@@ -105,10 +109,10 @@ export default class PrivacyDropdown extends React.PureComponent {
 
     return (
       <div ref={this.setRef} className={`privacy-dropdown ${open ? 'active' : ''}`}>
-        <div className='privacy-dropdown__value'><IconButton className='privacy-dropdown__value-icon' icon={valueOption.icon} title={intl.formatMessage(messages.change_privacy)} size={18} active={open} inverted onClick={this.handleToggle} style={iconStyle} /></div>
+        <div className='privacy-dropdown__value'><IconButton className='privacy-dropdown__value-icon' icon={valueOption.icon} title={intl.formatMessage(messages.change_privacy)} size={18} pressed={open} active={open} inverted onClick={this.handleToggle} style={iconStyle} /></div>
         <div className='privacy-dropdown__dropdown'>
           {open && this.options.map(item =>
-            <div role='button' tabIndex='0' key={item.value} data-index={item.value} onClick={this.handleClick} className={`privacy-dropdown__option ${item.value === value ? 'active' : ''}`}>
+            <div role='button' tabIndex='0' key={item.value} data-index={item.value} onKeyDown={this.handleClick} onClick={this.handleClick} className={`privacy-dropdown__option ${item.value === value ? 'active' : ''}`}>
               <div className='privacy-dropdown__option__icon'><i className={`fa fa-fw fa-${item.icon}`} /></div>
               <div className='privacy-dropdown__option__content'>
                 <strong>{item.text}</strong>

app/javascript/mastodon/features/notifications/components/setting_toggle.js

@@ -18,13 +18,19 @@ export default class SettingToggle extends React.PureComponent {
     this.props.onChange(this.props.settingKey, target.checked);
   }
 
+  onKeyDown = e => {
+    if (e.key === ' ') {
+      this.props.onChange(this.props.settingKey, !e.target.checked);
+    }
+  }
+
   render () {
     const { prefix, settings, settingKey, label, meta } = this.props;
     const id = ['setting-toggle', prefix, ...settingKey].filter(Boolean).join('-');
 
     return (
       <div className='setting-toggle'>
-        <Toggle id={id} checked={settings.getIn(settingKey)} onChange={this.onChange} />
+        <Toggle id={id} checked={settings.getIn(settingKey)} onChange={this.onChange} onKeyDown={this.onKeyDown} />
         <label htmlFor={id} className='setting-toggle__label'>{label}</label>
         {meta && <span className='setting-meta__label'>{meta}</span>}
       </div>

app/javascript/mastodon/features/ui/components/actions_modal.js

@@ -24,7 +24,7 @@ export default class ActionsModal extends ImmutablePureComponent {
     return (
       <li key={`${text}-${i}`}>
         <a href={href} target='_blank' rel='noopener' onClick={this.props.onClick} data-index={i} className={active && 'active'}>
-          {icon && <IconButton title={text} icon={icon} />}
+          {icon && <IconButton title={text} icon={icon} role='presentation' tabIndex='-1' />}
           <div>
             <div>{text}</div>
             <div>{meta}</div>