Added internationalized screen reader helpers to EuiMark.

src/components/highlight/__snapshots__/highlight.test.tsx.snap

@@ -4,7 +4,7 @@ exports[`EuiHighlight behavior loose matching matches strings with different cas
 <span>
   different 
   <mark
-    class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+    class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
   >
     case
   </mark>
@@ -15,19 +15,41 @@ exports[`EuiHighlight behavior loose matching matches strings with different cas
 exports[`EuiHighlight behavior matching applies to all matches 1`] = `
 <span>
   <mark
-    class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+    class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
   >
     match
   </mark>
 
   <mark
-    class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+    class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
   >
     match
   </mark>
 
   <mark
-    class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+    class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
+  >
+    match
+  </mark>
+</span>
+`;
+
+exports[`EuiHighlight behavior matching hasScreenReaderHelpText can be false 1`] = `
+<span>
+  <mark
+    class="euiMark css-dtzpxu-euiMarkStyles-EuiMark"
+  >
+    match
+  </mark>
+
+  <mark
+    class="euiMark css-dtzpxu-euiMarkStyles-EuiMark"
+  >
+    match
+  </mark>
+
+  <mark
+    class="euiMark css-dtzpxu-euiMarkStyles-EuiMark"
   >
     match
   </mark>
@@ -37,7 +59,7 @@ exports[`EuiHighlight behavior matching applies to all matches 1`] = `
 exports[`EuiHighlight behavior matching only applies to first match 1`] = `
 <span>
   <mark
-    class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+    class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
   >
     match
   </mark>

src/components/highlight/highlight.test.tsx

@@ -42,6 +42,20 @@ describe('EuiHighlight', () => {
 
         expect(component).toMatchSnapshot();
       });
+
+      test('hasScreenReaderHelpText can be false', () => {
+        const component = render(
+          <EuiHighlight
+            search="match"
+            highlightAll
+            hasScreenReaderHelpText={false}
+          >
+            match match match
+          </EuiHighlight>
+        );
+
+        expect(component).toMatchSnapshot();
+      });
     });
 
     describe('loose matching', () => {

src/components/highlight/highlight.tsx

@@ -8,7 +8,7 @@
 
 import React, { Fragment, HTMLAttributes, FunctionComponent } from 'react';
 import { CommonProps } from '../common';
-import { EuiMark } from '../mark';
+import { EuiMark, EuiMarkProps } from '../mark';
 
 interface EuiHighlightChunk {
   /**
@@ -25,7 +25,10 @@ interface EuiHighlightChunk {
   highlight?: boolean;
 }
 
+type EuiMarkPropHelpText = Pick<EuiMarkProps, 'hasScreenReaderHelpText'>;
+
 export type EuiHighlightProps = HTMLAttributes<HTMLSpanElement> &
+  EuiMarkPropHelpText &
   CommonProps & {
     /**
      * string to highlight as this component's content
@@ -52,7 +55,8 @@ const highlight = (
   searchSubject: string,
   searchValue: string,
   isStrict: boolean,
-  highlightAll: boolean
+  highlightAll: boolean,
+  hasScreenReaderHelpText: boolean
 ) => {
   if (!searchValue) {
     return searchSubject;
@@ -70,7 +74,14 @@ const highlight = (
           const { end, highlight, start } = chunk;
           const value = searchSubject.substr(start, end - start);
           if (highlight) {
-            return <EuiMark key={start}>{value}</EuiMark>;
+            return (
+              <EuiMark
+                key={start}
+                hasScreenReaderHelpText={hasScreenReaderHelpText}
+              >
+                {value}
+              </EuiMark>
+            );
           }
           return value;
         })}
@@ -101,7 +112,9 @@ const highlight = (
   return (
     <Fragment>
       {preMatch}
-      <EuiMark>{match}</EuiMark>
+      <EuiMark hasScreenReaderHelpText={hasScreenReaderHelpText}>
+        {match}
+      </EuiMark>
       {postMatch}
     </Fragment>
   );
@@ -158,11 +171,18 @@ export const EuiHighlight: FunctionComponent<EuiHighlightProps> = ({
   search,
   strict = false,
   highlightAll = false,
+  hasScreenReaderHelpText = true,
   ...rest
 }) => {
   return (
     <span className={className} {...rest}>
-      {highlight(children, search, strict, highlightAll)}
+      {highlight(
+        children,
+        search,
+        strict,
+        highlightAll,
+        hasScreenReaderHelpText
+      )}
     </span>
   );
 };

src/components/mark/__snapshots__/mark.test.tsx.snap

@@ -3,22 +3,58 @@
 exports[`EuiMark is rendered 1`] = `
 <mark
   aria-label="aria-label"
-  class="euiMark testClass1 testClass2 css-1izqibv-euiMarkStyles-EuiMark"
+  class="euiMark testClass1 testClass2 css-b9vly9-euiMarkStyles-EuiMark"
   data-test-subj="test subject string"
 >
   Marked
 </mark>
 `;
 
 exports[`EuiMark is rendered: renders with emotion styles 1`] = `
-.css-1izqibv-euiMarkStyles-EuiMark {
+.css-b9vly9-euiMarkStyles-EuiMark {
   background-color: rgba(0,119,204,0.1);
   font-weight: 700;
   color: #343741;
 }
 
+.css-b9vly9-euiMarkStyles-EuiMark:before,
+.css-b9vly9-euiMarkStyles-EuiMark:after {
+  -webkit-clip-path: inset(100%);
+  clip-path: inset(100%);
+  clip: rect(1px, 1px, 1px, 1px);
+  height: 1px;
+  overflow: hidden;
+  position: absolute;
+  white-space: nowrap;
+  width: 1px;
+}
+
+.css-b9vly9-euiMarkStyles-EuiMark:before {
+  content: ' [highlight start] ';
+}
+
+.css-b9vly9-euiMarkStyles-EuiMark:after {
+  content: ' [highlight end] ';
+}
+
 <mark
-  class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+  class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
+>
+  Marked
+</mark>
+`;
+
+exports[`No screen reader helper text is rendered without CSS :before and :after text 1`] = `
+.css-dtzpxu-euiMarkStyles-EuiMark {
+  background-color: rgba(0,119,204,0.1);
+  font-weight: 700;
+  color: #343741;
+}
+
+<mark
+  aria-label="aria-label"
+  class="euiMark testClass1 testClass2 css-dtzpxu-euiMarkStyles-EuiMark"
+  data-test-subj="test subject string"
 >
   Marked
 </mark>

src/components/mark/index.ts

@@ -6,4 +6,5 @@
  * Side Public License, v 1.
  */
 
+export type { EuiMarkProps } from './mark';
 export { EuiMark } from './mark';

src/components/mark/mark.styles.ts

@@ -9,7 +9,18 @@
 import { css } from '@emotion/react';
 import { UseEuiTheme, transparentize } from '../../services';
 
-export const euiMarkStyles = ({ euiTheme, colorMode }: UseEuiTheme) => {
+export const euiMarkStyles = (
+  { euiTheme, colorMode }: UseEuiTheme,
+  {
+    hasScreenReaderHelpText,
+    highlightStart,
+    highlightEnd,
+  }: {
+    hasScreenReaderHelpText: boolean;
+    highlightStart: string;
+    highlightEnd: string;
+  }
+) => {
   // TODO: Was $euiFocusBackgroundColor
   const transparency = { LIGHT: 0.1, DARK: 0.3 };
 
@@ -22,5 +33,28 @@ export const euiMarkStyles = ({ euiTheme, colorMode }: UseEuiTheme) => {
     // Override the browser's black color.
     // Can't use 'inherit' because the text to background color contrast may not be sufficient
     color: ${euiTheme.colors.text};
+
+    // https://seanconnolly.dev/emotion-conditionals
+    ${hasScreenReaderHelpText === true &&
+    `
+      &:before,
+      &:after {
+        clip-path: inset(100%);
+        clip: rect(1px, 1px, 1px, 1px);
+        height: 1px;
+        overflow: hidden;
+        position: absolute;
+        white-space: nowrap;
+        width: 1px;
+      }
+
+      &:before {
+        content: ' [${highlightStart}] ';
+      }
+
+      &:after {
+        content: ' [${highlightEnd}] ';
+      }
+    `}
   `;
 };

src/components/mark/mark.test.tsx

@@ -22,3 +22,17 @@ describe('EuiMark', () => {
     ).toMatchSnapshot();
   });
 });
+
+describe('No screen reader helper text', () => {
+  renderWithStyles(<EuiMark>Marked</EuiMark>);
+
+  test('is rendered without CSS :before and :after text', () => {
+    expect(
+      render(
+        <EuiMark hasScreenReaderHelpText={false} {...requiredProps}>
+          Marked
+        </EuiMark>
+      )
+    ).toMatchSnapshot();
+  });
+});

src/components/mark/mark.tsx

@@ -8,11 +8,17 @@
 
 import React, { HTMLAttributes, FunctionComponent, ReactNode } from 'react';
 import classNames from 'classnames';
+import { useEuiI18n } from '../i18n';
 import { CommonProps } from '../common';
 import { useEuiTheme } from '../../services';
 import { euiMarkStyles } from './mark.styles';
 export type EuiMarkProps = HTMLAttributes<HTMLElement> &
   CommonProps & {
+    /**
+     * Set to `false` to remove the CSS :before and :after
+     * screen reader helper text
+     */
+    hasScreenReaderHelpText?: boolean;
     /**
      * ReactNode to render as this component's content
      */
@@ -22,10 +28,20 @@ export type EuiMarkProps = HTMLAttributes<HTMLElement> &
 export const EuiMark: FunctionComponent<EuiMarkProps> = ({
   children,
   className,
+  hasScreenReaderHelpText = true,
   ...rest
 }) => {
   const useTheme = useEuiTheme();
-  const styles = euiMarkStyles(useTheme);
+  const highlightStart = useEuiI18n(
+    'euiMark.highlightStart',
+    'highlight start'
+  );
+  const highlightEnd = useEuiI18n('euiMark.highlightEnd', 'highlight end');
+  const styles = euiMarkStyles(useTheme, {
+    hasScreenReaderHelpText,
+    highlightStart,
+    highlightEnd,
+  });
   const classes = classNames('euiMark', className);
 
   return (

src/components/selectable/selectable_list/__snapshots__/selectable_list.test.tsx.snap

@@ -2222,7 +2222,7 @@ exports[`EuiSelectableListItem props searchValue 1`] = `
             >
               <span>
                 <mark
-                  class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+                  class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
                 >
                   Mi
                 </mark>
@@ -2417,7 +2417,7 @@ exports[`EuiSelectableListItem props searchValue 2`] = `
             >
               <span>
                 <mark
-                  class="euiMark css-1izqibv-euiMarkStyles-EuiMark"
+                  class="euiMark css-b9vly9-euiMarkStyles-EuiMark"
                 >
                   Mi
                 </mark>

upcoming_changelogs/5739.md

@@ -0,0 +1 @@
+- Added internationalized screen reader helpers to `EuiMark`