From 6304d93991af2397eb8c5ab665a61ea93434030e Mon Sep 17 00:00:00 2001
From: Wouter Admiraal <wouter.admiraal@sonarsource.com>
Date: Thu, 25 Aug 2022 13:46:31 +0200
Subject: [PATCH] SONAR-16738 [891611] Visual list is not marked up as list

---
 .../main/js/apps/projects/filters/Filter.tsx  |  76 +-
 .../__snapshots__/Filter-test.tsx.snap        | 688 ++++++++++--------
 .../LanguagesFilter-test.tsx.snap             | 172 +++--
 .../__snapshots__/TagsFilter-test.tsx.snap    | 142 ++--
 .../src/main/js/apps/projects/styles.css      | 108 ++-
 .../main/js/components/search-navigator.css   |  91 ---
 .../resources/org/sonar/l10n/core.properties  |   1 +
 7 files changed, 696 insertions(+), 582 deletions(-)

diff --git a/server/sonar-web/src/main/js/apps/projects/filters/Filter.tsx b/server/sonar-web/src/main/js/apps/projects/filters/Filter.tsx
index e4961f26995..7db00ac9c10 100644
--- a/server/sonar-web/src/main/js/apps/projects/filters/Filter.tsx
+++ b/server/sonar-web/src/main/js/apps/projects/filters/Filter.tsx
@@ -115,15 +115,16 @@ export default class Filter extends React.PureComponent<Props> {
     );
   }
 
-  renderOption(option: Option) {
+  renderOption(option: Option, highlightable = false, lastHighlightable = false) {
     const { facet, getFacetValueForOption = defaultGetFacetValueForOption, value } = this.props;
+    const active = this.isSelected(option);
     const className = classNames(
       'facet',
       'search-navigator-facet',
       'projects-facet',
       'button-link',
       {
-        active: this.isSelected(option),
+        active,
         'search-navigator-facet-half': this.props.halfWidth
       },
       this.props.optionClassName
@@ -139,26 +140,33 @@ export default class Filter extends React.PureComponent<Props> {
       option > value;
 
     return (
-      <button
-        aria-label={this.props.renderAccessibleLabel(option)}
-        className={className}
-        data-key={option}
-        type="button"
-        tabIndex={0}
+      <li
         key={option}
-        onClick={this.handleClick}
-        role="checkbox"
-        aria-checked={this.isSelected(option) || isUnderSelectedOption}>
-        <span className="facet-name">
-          {this.props.renderOption(option, this.isSelected(option) || isUnderSelectedOption)}
-        </span>
-        {facetValue != null && (
-          <span className="facet-stat">
-            {formatMeasure(facetValue, 'SHORT_INT')}
-            {this.renderOptionBar(facetValue)}
+        className={classNames({
+          'search-navigator-facet-worse-than-highlight': highlightable,
+          last: lastHighlightable,
+          active
+        })}>
+        <button
+          aria-label={this.props.renderAccessibleLabel(option)}
+          className={className}
+          data-key={option}
+          type="button"
+          tabIndex={0}
+          onClick={this.handleClick}
+          role="checkbox"
+          aria-checked={this.isSelected(option) || isUnderSelectedOption}>
+          <span className="facet-name">
+            {this.props.renderOption(option, this.isSelected(option) || isUnderSelectedOption)}
           </span>
-        )}
-      </button>
+          {facetValue != null && (
+            <span className="facet-stat">
+              {formatMeasure(facetValue, 'SHORT_INT')}
+              {this.renderOptionBar(facetValue)}
+            </span>
+          )}
+        </button>
+      </li>
     );
   }
 
@@ -171,24 +179,26 @@ export default class Filter extends React.PureComponent<Props> {
         const insideHighlight = options.slice(highlightUnder, max);
         const afterHighlight = options.slice(max);
         return (
-          <div className="search-navigator-facet-list projects-facet-list">
+          <ul className="search-navigator-facet-list projects-facet-list">
             {beforeHighlight.map(option => this.renderOption(option))}
-            <div className="search-navigator-facet-highlight-under-container">
-              {insideHighlight.map(option => this.renderOption(option))}
-            </div>
+            {insideHighlight.map((option, i) =>
+              this.renderOption(option, true, i === insideHighlight.length - 1)
+            )}
             {afterHighlight.map(option => this.renderOption(option))}
-          </div>
-        );
-      } else {
-        return (
-          <div className="search-navigator-facet-list projects-facet-list">
-            {options.map(option => this.renderOption(option))}
-          </div>
+          </ul>
         );
       }
-    } else {
-      return <div className="search-navigator-facet-empty">{translate('no_results')}</div>;
+      return (
+        <ul className="search-navigator-facet-list projects-facet-list">
+          {options.map(option => this.renderOption(option))}
+        </ul>
+      );
     }
+    return (
+      <div className="search-navigator-facet-empty">
+        <em>{translate('projects.facets.no_available_filters_clear_others')}</em>
+      </div>
+    );
   };
 
   render() {
diff --git a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/Filter-test.tsx.snap b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/Filter-test.tsx.snap
index e45056ac4a0..891db262a5d 100644
--- a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/Filter-test.tsx.snap
+++ b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/Filter-test.tsx.snap
@@ -5,35 +5,39 @@ exports[`highlights under 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={1}
+    <li
+      className=""
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <div
-      className="search-navigator-facet-highlight-under-container"
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className="search-navigator-facet-worse-than-highlight"
+      key="2"
     >
       <button
         aria-checked={false}
         aria-label="2"
         className="facet search-navigator-facet projects-facet button-link"
         data-key={2}
-        key="2"
         onClick={[Function]}
         role="checkbox"
         tabIndex={0}
@@ -45,12 +49,16 @@ exports[`highlights under 1`] = `
           2
         </span>
       </button>
+    </li>
+    <li
+      className="search-navigator-facet-worse-than-highlight last"
+      key="3"
+    >
       <button
         aria-checked={false}
         aria-label="3"
         className="facet search-navigator-facet projects-facet button-link"
         data-key={3}
-        key="3"
         onClick={[Function]}
         role="checkbox"
         tabIndex={0}
@@ -62,8 +70,8 @@ exports[`highlights under 1`] = `
           3
         </span>
       </button>
-    </div>
-  </div>
+    </li>
+  </ul>
 </div>
 `;
 
@@ -72,35 +80,39 @@ exports[`hightlights under selected 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={1}
+    <li
+      className=""
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <div
-      className="search-navigator-facet-highlight-under-container"
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className="search-navigator-facet-worse-than-highlight active"
+      key="2"
     >
       <button
         aria-checked={true}
         aria-label="2"
         className="facet search-navigator-facet projects-facet button-link active"
         data-key={2}
-        key="2"
         onClick={[Function]}
         role="checkbox"
         tabIndex={0}
@@ -112,12 +124,16 @@ exports[`hightlights under selected 1`] = `
           2
         </span>
       </button>
+    </li>
+    <li
+      className="search-navigator-facet-worse-than-highlight last"
+      key="3"
+    >
       <button
         aria-checked={true}
         aria-label="3"
         className="facet search-navigator-facet projects-facet button-link"
         data-key={3}
-        key="3"
         onClick={[Function]}
         role="checkbox"
         tabIndex={0}
@@ -129,8 +145,8 @@ exports[`hightlights under selected 1`] = `
           3
         </span>
       </button>
-    </div>
-  </div>
+    </li>
+  </ul>
 </div>
 `;
 
@@ -139,61 +155,73 @@ exports[`renders 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={1}
+    <li
+      className=""
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="2"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={2}
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="2"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="2"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={2}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        2
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="3"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={3}
+        <span
+          className="facet-name"
+        >
+          2
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="3"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="3"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={3}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        3
-      </span>
-    </button>
-  </div>
+        <span
+          className="facet-name"
+        >
+          3
+        </span>
+      </button>
+    </li>
+  </ul>
 </div>
 `;
 
@@ -202,112 +230,124 @@ exports[`renders facet bar chart 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="a"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key="a"
+    <li
+      className=""
       key="a"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
-      >
-        a
-      </span>
-      <span
-        className="facet-stat"
+      <button
+        aria-checked={false}
+        aria-label="a"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key="a"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        17
-        <div
-          className="projects-facet-bar"
+        <span
+          className="facet-name"
         >
+          a
+        </span>
+        <span
+          className="facet-stat"
+        >
+          17
           <div
-            className="projects-facet-bar-inner"
-            style={
-              Object {
-                "width": 42.5,
+            className="projects-facet-bar"
+          >
+            <div
+              className="projects-facet-bar-inner"
+              style={
+                Object {
+                  "width": 42.5,
+                }
               }
-            }
-          />
-        </div>
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="b"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key="b"
+            />
+          </div>
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="b"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
-      >
-        b
-      </span>
-      <span
-        className="facet-stat"
+      <button
+        aria-checked={false}
+        aria-label="b"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key="b"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        15
-        <div
-          className="projects-facet-bar"
+        <span
+          className="facet-name"
+        >
+          b
+        </span>
+        <span
+          className="facet-stat"
         >
+          15
           <div
-            className="projects-facet-bar-inner"
-            style={
-              Object {
-                "width": 37.5,
+            className="projects-facet-bar"
+          >
+            <div
+              className="projects-facet-bar-inner"
+              style={
+                Object {
+                  "width": 37.5,
+                }
               }
-            }
-          />
-        </div>
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="c"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key="c"
+            />
+          </div>
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="c"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
-      >
-        c
-      </span>
-      <span
-        className="facet-stat"
+      <button
+        aria-checked={false}
+        aria-label="c"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key="c"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        24
-        <div
-          className="projects-facet-bar"
+        <span
+          className="facet-name"
+        >
+          c
+        </span>
+        <span
+          className="facet-stat"
         >
+          24
           <div
-            className="projects-facet-bar-inner"
-            style={
-              Object {
-                "width": 60,
+            className="projects-facet-bar"
+          >
+            <div
+              className="projects-facet-bar-inner"
+              style={
+                Object {
+                  "width": 60,
+                }
               }
-            }
-          />
-        </div>
-      </span>
-    </button>
-  </div>
+            />
+          </div>
+        </span>
+      </button>
+    </li>
+  </ul>
 </div>
 `;
 
@@ -317,61 +357,73 @@ exports[`renders header and footer 1`] = `
   data-key="foo"
 >
   <header />
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={1}
+    <li
+      className=""
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="2"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={2}
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="2"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="2"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={2}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        2
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="3"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={3}
+        <span
+          className="facet-name"
+        >
+          2
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="3"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="3"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={3}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        3
-      </span>
-    </button>
-  </div>
+        <span
+          className="facet-name"
+        >
+          3
+        </span>
+      </button>
+    </li>
+  </ul>
   <footer />
 </div>
 `;
@@ -381,61 +433,73 @@ exports[`renders multiple selected 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={true}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key={1}
+    <li
+      className="active"
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <button
-      aria-checked={true}
-      aria-label="2"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key={2}
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className="active"
       key="2"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="2"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key={2}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        2
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="3"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={3}
+        <span
+          className="facet-name"
+        >
+          2
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="3"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="3"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={3}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        3
-      </span>
-    </button>
-  </div>
+        <span
+          className="facet-name"
+        >
+          3
+        </span>
+      </button>
+    </li>
+  </ul>
 </div>
 `;
 
@@ -447,7 +511,9 @@ exports[`renders no results 1`] = `
   <div
     className="search-navigator-facet-empty"
   >
-    no_results
+    <em>
+      projects.facets.no_available_filters_clear_others
+    </em>
   </div>
 </div>
 `;
@@ -457,60 +523,72 @@ exports[`renders selected 1`] = `
   className="search-navigator-facet-box"
   data-key="foo"
 >
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={false}
-      aria-label="1"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={1}
+    <li
+      className=""
       key="1"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="1"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={1}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-    <button
-      aria-checked={true}
-      aria-label="2"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key={2}
+        <span
+          className="facet-name"
+        >
+          1
+        </span>
+      </button>
+    </li>
+    <li
+      className="active"
       key="2"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="2"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key={2}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        2
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="3"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key={3}
+        <span
+          className="facet-name"
+        >
+          2
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="3"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="3"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key={3}
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        3
-      </span>
-    </button>
-  </div>
+        <span
+          className="facet-name"
+        >
+          3
+        </span>
+      </button>
+    </li>
+  </ul>
 </div>
 `;
diff --git a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/LanguagesFilter-test.tsx.snap b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/LanguagesFilter-test.tsx.snap
index c5301bbcb24..599f4d2d941 100644
--- a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/LanguagesFilter-test.tsx.snap
+++ b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/LanguagesFilter-test.tsx.snap
@@ -72,100 +72,112 @@ exports[`should render the languages facet with the selected languages 2`] = `
   <FilterHeader
     name="projects.facets.languages"
   />
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={true}
-      aria-label="projects.facets.label_text_x.projects.facets.languages.Java"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key="java"
+    <li
+      className="active"
       key="java"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="projects.facets.label_text_x.projects.facets.languages.Java"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key="java"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        <SearchableFilterOption
-          option={
-            Object {
-              "key": "java",
-              "name": "Java",
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            option={
+              Object {
+                "key": "java",
+                "name": "Java",
+              }
             }
-          }
-          optionKey="java"
-        />
-      </span>
-      <span
-        className="facet-stat"
-      >
-        39
-      </span>
-    </button>
-    <button
-      aria-checked={true}
-      aria-label="projects.facets.label_text_x.projects.facets.languages.C#"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key="cs"
+            optionKey="java"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          39
+        </span>
+      </button>
+    </li>
+    <li
+      className="active"
       key="cs"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="projects.facets.label_text_x.projects.facets.languages.C#"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key="cs"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        <SearchableFilterOption
-          option={
-            Object {
-              "key": "cs",
-              "name": "C#",
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            option={
+              Object {
+                "key": "cs",
+                "name": "C#",
+              }
             }
-          }
-          optionKey="cs"
-        />
-      </span>
-      <span
-        className="facet-stat"
-      >
-        4
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="projects.facets.label_text_x.projects.facets.languages.JavaScript"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key="js"
+            optionKey="cs"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          4
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="js"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={false}
+        aria-label="projects.facets.label_text_x.projects.facets.languages.JavaScript"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key="js"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        <SearchableFilterOption
-          option={
-            Object {
-              "key": "js",
-              "name": "JavaScript",
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            option={
+              Object {
+                "key": "js",
+                "name": "JavaScript",
+              }
             }
-          }
-          optionKey="js"
-        />
-      </span>
-      <span
-        className="facet-stat"
-      >
-        1
-      </span>
-    </button>
-  </div>
+            optionKey="js"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          1
+        </span>
+      </button>
+    </li>
+  </ul>
   <SearchableFilterFooter
     onQueryChange={[MockFunction]}
     options={
diff --git a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/TagsFilter-test.tsx.snap b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/TagsFilter-test.tsx.snap
index 94c5ca062ed..5b04154d8cf 100644
--- a/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/TagsFilter-test.tsx.snap
+++ b/server/sonar-web/src/main/js/apps/projects/filters/__tests__/__snapshots__/TagsFilter-test.tsx.snap
@@ -157,82 +157,94 @@ exports[`should render the tags facet with the selected tags 2`] = `
   <FilterHeader
     name="projects.facets.tags"
   />
-  <div
+  <ul
     className="search-navigator-facet-list projects-facet-list"
   >
-    <button
-      aria-checked={true}
-      aria-label="projects.facets.label_text_x.projects.facets.tags.lang"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key="lang"
+    <li
+      className="active"
       key="lang"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
+      <button
+        aria-checked={true}
+        aria-label="projects.facets.label_text_x.projects.facets.tags.lang"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key="lang"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        <SearchableFilterOption
-          optionKey="lang"
-        />
-      </span>
-      <span
-        className="facet-stat"
-      >
-        4
-      </span>
-    </button>
-    <button
-      aria-checked={true}
-      aria-label="projects.facets.label_text_x.projects.facets.tags.sonar"
-      className="facet search-navigator-facet projects-facet button-link active"
-      data-key="sonar"
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            optionKey="lang"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          4
+        </span>
+      </button>
+    </li>
+    <li
+      className="active"
       key="sonar"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
-      >
-        <SearchableFilterOption
-          optionKey="sonar"
-        />
-      </span>
-      <span
-        className="facet-stat"
+      <button
+        aria-checked={true}
+        aria-label="projects.facets.label_text_x.projects.facets.tags.sonar"
+        className="facet search-navigator-facet projects-facet button-link active"
+        data-key="sonar"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        3
-      </span>
-    </button>
-    <button
-      aria-checked={false}
-      aria-label="projects.facets.label_text_x.projects.facets.tags.csharp"
-      className="facet search-navigator-facet projects-facet button-link"
-      data-key="csharp"
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            optionKey="sonar"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          3
+        </span>
+      </button>
+    </li>
+    <li
+      className=""
       key="csharp"
-      onClick={[Function]}
-      role="checkbox"
-      tabIndex={0}
-      type="button"
     >
-      <span
-        className="facet-name"
-      >
-        <SearchableFilterOption
-          optionKey="csharp"
-        />
-      </span>
-      <span
-        className="facet-stat"
+      <button
+        aria-checked={false}
+        aria-label="projects.facets.label_text_x.projects.facets.tags.csharp"
+        className="facet search-navigator-facet projects-facet button-link"
+        data-key="csharp"
+        onClick={[Function]}
+        role="checkbox"
+        tabIndex={0}
+        type="button"
       >
-        1
-      </span>
-    </button>
-  </div>
+        <span
+          className="facet-name"
+        >
+          <SearchableFilterOption
+            optionKey="csharp"
+          />
+        </span>
+        <span
+          className="facet-stat"
+        >
+          1
+        </span>
+      </button>
+    </li>
+  </ul>
   <SearchableFilterFooter
     isLoading={false}
     onInputChange={[Function]}
diff --git a/server/sonar-web/src/main/js/apps/projects/styles.css b/server/sonar-web/src/main/js/apps/projects/styles.css
index 6e226a562ed..018d8eb99bb 100644
--- a/server/sonar-web/src/main/js/apps/projects/styles.css
+++ b/server/sonar-web/src/main/js/apps/projects/styles.css
@@ -82,15 +82,107 @@
   transition: width 0.3s ease;
 }
 
-.search-navigator-facet.active .projects-facet-bar-inner,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet
-  .projects-facet-bar-inner {
-  background-color: var(--blue);
-}
-
 .projects-empty-list {
   padding: calc(4 * var(--gridSize)) 0;
   text-align: center;
 }
+
+/***
+  Custom filter highlights.
+  Projects filters are special, as some elements allow the selection of "everything
+  worse than" filters (e.g., "Rating B or worse"). We still select a single element,
+  but we want to give a visual indication that we selected multiple fitlers.
+  That's where the following selectors come in, which extend and override styles
+  from ../../components/search-navigator.css
+***/
+
+/*
+  Completely remove the border of the child facet. Handle them at the parent
+  <li> level.
+*/
+.search-navigator-facet-worse-than-highlight .search-navigator-facet {
+  border: 0 !important;
+}
+
+.search-navigator-facet-worse-than-highlight {
+  padding: 1px 0;
+  border-width: 0 1px;
+  border-color: transparent;
+  border-style: solid;
+  box-sizing: border-box;
+}
+
+/*
+  When:
+  - Being hovered
+  - Or, being a sibling of something hovered
+  - Or, being active
+  - Or, being a sibling of something active
+  show the left and right borders.
+*/
+.search-navigator-facet-worse-than-highlight:hover,
+.search-navigator-facet-worse-than-highlight:hover ~ .search-navigator-facet-worse-than-highlight,
+.search-navigator-facet-worse-than-highlight.active,
+.search-navigator-facet-worse-than-highlight.active ~ .search-navigator-facet-worse-than-highlight {
+  border-left-color: var(--blue);
+  border-right-color: var(--blue);
+}
+
+/*
+  When:
+  - Being hovered
+  - Or, being active
+  show the top border, and remove the top padding.
+*/
+.search-navigator-facet-worse-than-highlight:hover,
+.search-navigator-facet-worse-than-highlight.active {
+  border-top: 1px solid var(--blue) !important;
+  border-top-left-radius: 2px;
+  border-top-right-radius: 2px;
+  padding-top: 0 !important;
+}
+
+/*
+  When:
+  - Being hovered AND the last element of the highlightable group
+  - Or, being the last element of the highlightable group AND a sibling of something hovered
+  - Or, being active AND the last element of the highlightable group
+  - Or, being the last element of the highlightable group AND a sibling of something active
+  show the bottom border, and remove the bottom padding.
+*/
+.search-navigator-facet-worse-than-highlight.last:hover,
+.search-navigator-facet-worse-than-highlight:hover
+  ~ .search-navigator-facet-worse-than-highlight.last,
+.search-navigator-facet-worse-than-highlight.active.last,
+.search-navigator-facet-worse-than-highlight.active
+  ~ .search-navigator-facet-worse-than-highlight.last {
+  border-bottom: 1px solid var(--blue) !important;
+  border-bottom-left-radius: 2px;
+  border-bottom-right-radius: 2px;
+  padding-bottom: 0 !important;
+}
+
+/*
+  When:
+  - Being active
+  - Or, being a sibling of something active
+  show a light blue background color.
+*/
+.search-navigator-facet-worse-than-highlight.active,
+.search-navigator-facet-worse-than-highlight.active ~ .search-navigator-facet-worse-than-highlight {
+  background-color: var(--veryLightBlue);
+}
+
+/*
+  When:
+  - Being hovered AND a sibling of something active
+  - Or, being a sibling of something hovered AND a sibling of something active
+  show a darker blue background color.
+*/
+.search-navigator-facet-worse-than-highlight.active
+  ~ .search-navigator-facet-worse-than-highlight:hover,
+.search-navigator-facet-worse-than-highlight.active
+  ~ .search-navigator-facet-worse-than-highlight:hover
+  ~ .search-navigator-facet-worse-than-highlight {
+  background-color: #a1cde8;
+}
diff --git a/server/sonar-web/src/main/js/components/search-navigator.css b/server/sonar-web/src/main/js/components/search-navigator.css
index 074aa308d5c..d54c4cf9285 100644
--- a/server/sonar-web/src/main/js/components/search-navigator.css
+++ b/server/sonar-web/src/main/js/components/search-navigator.css
@@ -218,96 +218,6 @@ button.search-navigator-facet:focus,
   margin-right: 10%;
 }
 
-.search-navigator-facet-highlight-under-container {
-  margin-bottom: 1px;
-}
-
-.search-navigator-facet-highlight-under-container .search-navigator-facet {
-  margin-bottom: 0;
-}
-
-.search-navigator-facet-highlight-under-container .search-navigator-facet:hover,
-.search-navigator-facet-highlight-under-container .search-navigator-facet.active {
-  border-bottom: none;
-  padding-bottom: 1px;
-  border-radius: 2px 2px 0 0;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet:hover
-  ~ .search-navigator-facet,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet {
-  border-top: none;
-  border-bottom: none;
-  border-left-color: var(--blue);
-  border-right-color: var(--blue);
-  border-radius: 0;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet:hover
-  ~ .search-navigator-facet:last-of-type,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:last-of-type {
-  border-bottom: 1px solid var(--blue);
-  border-radius: 0 0 2px 2px;
-}
-
-.search-navigator-facet-highlight-under-container .search-navigator-facet:hover:last-of-type,
-.search-navigator-facet-highlight-under-container .search-navigator-facet.active:last-of-type {
-  border-bottom: 1px solid var(--blue);
-  border-radius: 2px;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet {
-  background-color: var(--veryLightBlue);
-  text-decoration: none;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet
-  .facet-toggle {
-  display: inline;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:hover,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet:hover
-  ~ .search-navigator-facet.active {
-  border-top: 1px solid var(--blue);
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:hover,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:hover
-  ~ .search-navigator-facet {
-  background-color: #a1cde8;
-  text-decoration: none;
-}
-
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:hover
-  .facet-toggle,
-.search-navigator-facet-highlight-under-container
-  .search-navigator-facet.active
-  ~ .search-navigator-facet:hover
-  ~ .search-navigator-facet
-  .facet-toggle {
-  display: inline;
-}
-
 .search-navigator-facet-header {
   display: block;
   flex-shrink: 0;
@@ -379,7 +289,6 @@ button.search-navigator-facet:focus,
   padding: 0 10px 10px;
   color: var(--baseFontColor);
   font-size: var(--smallFontSize);
-  white-space: nowrap;
 }
 
 .search-navigator-facet-footer {
diff --git a/sonar-core/src/main/resources/org/sonar/l10n/core.properties b/sonar-core/src/main/resources/org/sonar/l10n/core.properties
index eb7a42fcb26..e8b7b629d87 100644
--- a/sonar-core/src/main/resources/org/sonar/l10n/core.properties
+++ b/sonar-core/src/main/resources/org/sonar/l10n/core.properties
@@ -1091,6 +1091,7 @@ projects.facets.duplication.label.2=Click to filter projects with more than 3% d
 projects.facets.duplication.label.3=Click to filter projects with more than 5% duplication
 projects.facets.duplication.label.4=Click to filter projects with more than 10% duplication
 projects.facets.duplication.label.5=Click to filter projects with more than 20% duplication
+projects.facets.no_available_filters_clear_others=No available filters. Clear other filters to see options.
 projects.sort.disabled=Disabled because sorting cannot affect the displayed result with the current project selection.
 projects.sort.analysis_date=by last analysis date (oldest first)
 projects.sort.-analysis_date=by last analysis date (latest first)
-- 
2.39.5