Fix media modal footer's “external link” not being a link (#17561)

app/javascript/mastodon/components/icon_button.js

@@ -27,6 +27,7 @@ export default class IconButton extends React.PureComponent {
     tabIndex: PropTypes.string,
     counter: PropTypes.number,
     obfuscateCount: PropTypes.bool,
+    href: PropTypes.string,
   };
 
   static defaultProps = {
@@ -102,6 +103,7 @@ export default class IconButton extends React.PureComponent {
       title,
       counter,
       obfuscateCount,
+      href,
     } = this.props;
 
     const {
@@ -123,6 +125,20 @@ export default class IconButton extends React.PureComponent {
       style.width = 'auto';
     }
 
+    let contents = (
+      <React.Fragment>
+        <Icon id={icon} fixedWidth aria-hidden='true' /> {typeof counter !== 'undefined' && <span className='icon-button__counter'><AnimatedNumber value={counter} obfuscate={obfuscateCount} /></span>}
+      </React.Fragment>
+    );
+
+    if (href) {
+      contents = (
+        <a href={href} target='_blank' rel='noopener noreferrer'>
+          {contents}
+        </a>
+      );
+    }
+
     return (
       <button
         aria-label={title}
@@ -138,7 +154,7 @@ export default class IconButton extends React.PureComponent {
         tabIndex={tabIndex}
         disabled={disabled}
       >
-        <Icon id={icon} fixedWidth aria-hidden='true' /> {typeof counter !== 'undefined' && <span className='icon-button__counter'><AnimatedNumber value={counter} obfuscate={obfuscateCount} /></span>}
+        {contents}
       </button>
     );
   }

app/javascript/mastodon/features/picture_in_picture/components/footer.js

@@ -156,7 +156,7 @@ class Footer extends ImmutablePureComponent {
         <IconButton className='status__action-bar-button' title={replyTitle} icon={status.get('in_reply_to_account_id') === status.getIn(['account', 'id']) ? 'reply' : replyIcon} onClick={this.handleReplyClick} counter={status.get('replies_count')} obfuscateCount />
         <IconButton className={classNames('status__action-bar-button', { reblogPrivate })} disabled={!publicStatus && !reblogPrivate}  active={status.get('reblogged')} pressed={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} counter={status.get('reblogs_count')} />
         <IconButton className='status__action-bar-button star-icon' animate active={status.get('favourited')} pressed={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} counter={status.get('favourites_count')} />
-        {withOpenButton && <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.open)} icon='external-link' onClick={this.handleOpenClick} />}
+        {withOpenButton && <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.open)} icon='external-link' onClick={this.handleOpenClick} href={status.get('url')} />}
       </div>
     );
   }

app/javascript/styles/mastodon/components.scss

@@ -166,6 +166,11 @@
   transition-property: background-color, color;
   text-decoration: none;
 
+  a {
+    color: inherit;
+    text-decoration: none;
+  }
+
   &:hover,
   &:active,
   &:focus {