[Glitch] Rename JSX files with proper .jsx extension

Port 44a7d87cb1 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/link.jsx

@@ -0,0 +1,97 @@
+//  Inspired by <CommonLink> from Mastodon GO!
+//  ~ 😘 kibi!
+
+//  Package imports.
+import classNames from 'classnames';
+import PropTypes from 'prop-types';
+import React from 'react';
+
+//  Utils.
+import { assignHandlers } from 'flavours/glitch/utils/react_helpers';
+
+//  Handlers.
+const handlers = {
+
+  //  We don't handle clicks that are made with modifiers, since these
+  //  often have special browser meanings (eg, "open in new tab").
+  click (e) {
+    const { onClick } = this.props;
+    if (!onClick || e.button || e.ctrlKey || e.shiftKey || e.altKey || e.metaKey) {
+      return;
+    }
+    onClick(e);
+    e.preventDefault();  //  Prevents following of the link
+  },
+};
+
+//  The component.
+export default class Link extends React.PureComponent {
+
+  //  Constructor.
+  constructor (props) {
+    super(props);
+    assignHandlers(this, handlers);
+  }
+
+  //  Rendering.
+  render () {
+    const { click } = this.handlers;
+    const {
+      children,
+      className,
+      href,
+      onClick,
+      role,
+      title,
+      ...rest
+    } = this.props;
+    const computedClass = classNames('link', className, `role-${role}`);
+
+    //  We assume that our `onClick` is a routing function and give it
+    //  the qualities of a link even if no `href` is provided. However,
+    //  if we have neither an `onClick` or an `href`, our link is
+    //  purely presentational.
+    const conditionalProps = {};
+    if (href) {
+      conditionalProps.href = href;
+      conditionalProps.onClick = click;
+    } else if (onClick) {
+      conditionalProps.onClick = click;
+      conditionalProps.role = 'link';
+      conditionalProps.tabIndex = 0;
+    } else {
+      conditionalProps.role = 'presentation';
+    }
+
+    //  If we were provided a `role` it overwrites any that we may have
+    //  set above.  This can be used for "links" which are actually
+    //  buttons.
+    if (role) {
+      conditionalProps.role = role;
+    }
+
+    //  Rendering.  We set `rel='noopener'` for user privacy, and our
+    //  `target` as `'_blank'`.
+    return (
+      <a
+        className={computedClass}
+        {...conditionalProps}
+        rel='noopener'
+        target='_blank'
+        title={title}
+        {...rest}
+      >{children}</a>
+    );
+  }
+
+}
+
+//  Props.
+Link.propTypes = {
+  children: PropTypes.node,
+  className: PropTypes.string,
+  href: PropTypes.string,  //  The link destination
+  onClick: PropTypes.func,  //  A function to call instead of opening the link
+  role: PropTypes.string,  //  An ARIA role for the link
+  title: PropTypes.string,  //  A title for the link
+};