fix: improve a11y of emoji list

fixes #218

README.md

@@ -59,6 +59,7 @@ import { Picker } from 'emoji-mart'
 ```js
 search: 'Search',
 clear: 'Clear', // Accessible label on "clear" button
+emojilist: 'List of emoji', // Accessible title for list of emoji
 notfound: 'No Emoji Found',
 skintext: 'Choose your default skin tone',
 categories: {

css/emoji-mart.css

@@ -164,6 +164,11 @@
   position: relative;
   display: inline-block;
   font-size: 0;
+  margin: 0;
+  padding: 0;
+  border: none;
+  background: none;
+  box-shadow: none;
 }
 
 .emoji-mart-emoji-native {

src/components/category.js

@@ -176,9 +176,10 @@ export default class Category extends React.Component {
     }
 
     return (
-      <div
+      <section
         ref={this.setContainerRef}
         className="emoji-mart-category"
+        aria-label={i18n.categories[id]}
         style={containerStyles}
       >
         <div
@@ -186,7 +187,11 @@ export default class Category extends React.Component {
           data-name={name}
           className="emoji-mart-category-label"
         >
-          <span style={labelSpanStyles} ref={this.setLabelRef}>
+          <span
+            style={labelSpanStyles}
+            ref={this.setLabelRef}
+            aria-hidden={true /* already labeled by the section aria-label */}
+          >
             {i18n.categories[id]}
           </span>
         </div>
@@ -206,7 +211,7 @@ export default class Category extends React.Component {
               emojiProps={emojiProps}
             />
           )}
-      </div>
+      </section>
     )
   }
 }

src/components/emoji/nimble-emoji.js

@@ -98,6 +98,12 @@ const NimbleEmoji = (props) => {
     style = {},
     children = props.children,
     className = 'emoji-mart-emoji',
+    nativeEmoji = unified && unifiedToNative(unified),
+    // combine the emoji itself and all shortcodes into an accessible label
+    label = [nativeEmoji]
+      .concat(short_names)
+      .filter(Boolean)
+      .join(', '),
     title = null
 
   if (!unified && !custom) {
@@ -115,7 +121,7 @@ const NimbleEmoji = (props) => {
   if (props.native && unified) {
     className += ' emoji-mart-emoji-native'
     style = { fontSize: props.size }
-    children = unifiedToNative(unified)
+    children = nativeEmoji
 
     if (props.forceSize) {
       style.display = 'inline-block'
@@ -173,21 +179,22 @@ const NimbleEmoji = (props) => {
 
   if (props.html) {
     style = _convertStyleToCSS(style)
-    return `<span style='${style}' ${
+    return `<button style='${style}' aria-label='${label}' ${
       title ? `title='${title}'` : ''
-    } class='${className}'>${children || ''}</span>`
+    } class='${className}'>${children || ''}</button>`
   } else {
     return (
-      <span
+      <button
         key={props.emoji.id || props.emoji}
         onClick={(e) => _handleClick(e, props)}
         onMouseEnter={(e) => _handleOver(e, props)}
         onMouseLeave={(e) => _handleLeave(e, props)}
+        aria-label={label}
         title={title}
         className={className}
       >
         <span style={style}>{children}</span>
-      </span>
+      </button>
     )
   }
 }

src/components/picker/nimble-picker.js

@@ -19,6 +19,7 @@ import { PickerDefaultProps } from '../../utils/shared-default-props'
 const I18N = {
   search: 'Search',
   clear: 'Clear', // Accessible label on "clear" button
+  emojilist: 'List of emoji', // Accessible title for list of emoji
   notfound: 'No Emoji Found',
   skintext: 'Choose your default skin tone',
   categories: {
@@ -520,9 +521,10 @@ export default class NimblePicker extends React.PureComponent {
           autoFocus={autoFocus}
         />
 
-        <div
+        <section
           ref={this.setScrollRef}
           className="emoji-mart-scroll"
+          aria-label={this.i18n.emojilist}
           onScroll={this.handleScroll}
         >
           {this.getCategories().map((category, i) => {
@@ -566,7 +568,7 @@ export default class NimblePicker extends React.PureComponent {
               />
             )
           })}
-        </div>
+        </section>
 
         {(showPreview || showSkinTones) && (
           <div className="emoji-mart-bar">