Add icons and allow inline display of SvgIcons

src/images/icons/email.svg

+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true" focusable="false" class="Icon Icon--email"><g fill-rule="evenodd"><rect fill="none" stroke="none" x="0" y="0" width="16" height="16"></rect><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M1 3v10h14V3H1zm0 0l7 6 7-6H1z"></path></g></svg>

src/images/icons/facebook.svg

+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true" focusable="false" class="Icon Icon--social-facebook"><g fill-rule="evenodd"><rect fill="none" stroke="none" x="0" y="0" width="16" height="16"></rect><path fill="currentColor" stroke="none" d="M15.999 8.049c0-4.445-3.582-8.049-8-8.049S0 3.604 0 8.049C0 12.066 2.925 15.396 6.75 16v-5.624H4.717V8.049H6.75V6.276c0-2.018 1.195-3.132 3.022-3.132.875 0 1.79.157 1.79.157v1.981h-1.008c-.994 0-1.304.62-1.304 1.257v1.51h2.219l-.355 2.327H9.25V16c3.825-.604 6.75-3.934 6.75-7.951z"></path></g></svg>

src/images/icons/share.svg

-<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-  <path fill="currentColor" fill-rule="nonzero" d="M16 1.656v3.5c0 .587-.721.874-1.138.464l-.992-.977-6.764 6.66a.674.674 0 0 1-.943 0l-.629-.62a.649.649 0 0 1 0-.927l6.765-6.66-.992-.976c-.419-.412-.122-1.12.471-1.12h3.555c.369 0 .667.294.667.656zm-4.694 6.749c.42-.414 1.138-.121 1.138.464v4.819c0 .724-.597 1.312-1.333 1.312H1.333A1.323 1.323 0 0 1 0 13.687V4.063C0 3.338.597 2.75 1.333 2.75h8.223c.593 0 .89.707.47 1.12l-.444.438a.772.772 0 0 1-.47.192H1.777v8.75h8.889V9.306c0-.15.087-.358.195-.464l.444-.437z"/>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true" focusable="false" class="Icon Icon--share"><g fill-rule="evenodd"><rect fill="none" stroke="none" x="0" y="0" width="16" height="16"></rect><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 11V2m7 8v5H1v-5m3-5l4-4 4 4"></path></g></svg>

src/images/icons/twitter.svg

+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true" focusable="false" class="Icon Icon--social-twitter"><g fill-rule="evenodd"><rect fill="none" stroke="none" x="0" y="0" width="16" height="16"></rect><path fill="currentColor" stroke="none" d="M15.969 3.049c-.59.259-1.22.436-1.884.516a3.305 3.305 0 0 0 1.442-1.815c-.634.37-1.336.64-2.084.79a3.28 3.28 0 0 0-5.59 2.988 9.29 9.29 0 0 1-6.76-3.418A3.214 3.214 0 0 0 .65 3.76c0 1.14.58 2.142 1.459 2.73a3.27 3.27 0 0 1-1.485-.41v.04a3.282 3.282 0 0 0 2.63 3.218 3.33 3.33 0 0 1-1.474.057 3.291 3.291 0 0 0 3.069 2.278A6.578 6.578 0 0 1 .78 13.076c-.26 0-.52-.015-.78-.044a9.33 9.33 0 0 0 5.038 1.472c6.036 0 9.332-4.997 9.332-9.323 0-.14 0-.28-.01-.42.64-.46 1.2-1.04 1.64-1.7l-.031-.012z"></path></g></svg>

src/sidebar/components/svg-icon.js

 'use strict';
 
+const classnames = require('classnames');
 const { createElement } = require('preact');
 const { useLayoutEffect, useRef } = require('preact/hooks');
 const propTypes = require('prop-types');
@@ -12,7 +13,9 @@ const icons = {
   'expand-menu': require('../../images/icons/expand-menu.svg'),
   copy: require('../../images/icons/copy.svg'),
   cursor: require('../../images/icons/cursor.svg'),
+  email: require('../../images/icons/email.svg'),
   external: require('../../images/icons/external.svg'),
+  facebook: require('../../images/icons/facebook.svg'),
   groups: require('../../images/icons/groups.svg'),
   help: require('../../images/icons/help.svg'),
   leave: require('../../images/icons/leave.svg'),
@@ -21,6 +24,7 @@ const icons = {
   public: require('../../images/icons/public.svg'),
   refresh: require('../../images/icons/refresh.svg'),
   share: require('../../images/icons/share.svg'),
+  twitter: require('../../images/icons/twitter.svg'),
 };
 
 /**
@@ -30,7 +34,7 @@ const icons = {
  * This matches the way we do icons on the website, see
  * https://github.com/hypothesis/h/pull/3675
  */
-function SvgIcon({ name, className = '' }) {
+function SvgIcon({ name, className = '', inline = false }) {
   if (!icons[name]) {
     throw new Error(`Unknown icon ${name}`);
   }
@@ -48,7 +52,11 @@ function SvgIcon({ name, className = '' }) {
   ]);
 
   return (
-    <span className="svg-icon" dangerouslySetInnerHTML={markup} ref={element} />
+    <span
+      className={classnames('svg-icon', { 'svg-icon--inline': inline })}
+      dangerouslySetInnerHTML={markup}
+      ref={element}
+    />
   );
 }
 
@@ -58,6 +66,9 @@ SvgIcon.propTypes = {
 
   /** A CSS class to apply to the `<svg>` element. */
   className: propTypes.string,
+
+  /** Apply a style allowing for inline display of icon wrapper */
+  inline: propTypes.bool,
 };
 
 module.exports = SvgIcon;

src/sidebar/components/test/svg-icon-test.js

@@ -43,4 +43,20 @@ describe('SvgIcon', () => {
     const svg = container.querySelector('svg');
     assert.equal(svg.getAttribute('class'), 'thing__icon');
   });
+
+  it('sets a default class on the wrapper element', () => {
+    const container = document.createElement('div');
+    render(<SvgIcon name="expand-menu" />, container);
+    const wrapper = container.querySelector('span');
+    assert.isTrue(wrapper.classList.contains('svg-icon'));
+    assert.isFalse(wrapper.classList.contains('svg-icon--inline'));
+  });
+
+  it('appends an inline class to wrapper if `inline` prop is `true`', () => {
+    const container = document.createElement('div');
+    render(<SvgIcon name="expand-menu" inline={true} />, container);
+    const wrapper = container.querySelector('span');
+    assert.isTrue(wrapper.classList.contains('svg-icon'));
+    assert.isTrue(wrapper.classList.contains('svg-icon--inline'));
+  });
 });

src/styles/sidebar/components/svg-icon.scss

 /* Make the wrapper element's size match the contained `svg` element  */
 .svg-icon {
   display: flex;
+
+  &--inline {
+    display: inline;
+  }
 }