refactor: replace pagefind-ui with new component

In Pagefind 1.5.0, a new component UI has been introduced, reducing the
need for custom JS init, and providing an excellent results interface,
and keyboard-friendly activation and navigation.

Signed-off-by: Mike Fiedler <miketheman@gmail.com>

Author: miketheman

pep_sphinx_extensions/pep_theme/static/style.css

@@ -50,6 +50,19 @@
     --colour-caution: var(--light, #ffa) var(--dark, #550);
     --colour-attention: var(--light, #bdf) var(--dark, #045);
     --colour-tip: var(--light, #bfc) var(--dark, #041);
+
+    /* Pagefind component UI — theme variable overrides */
+    --pf-text: var(--colour-text);
+    --pf-text-muted: var(--colour-rule-strong);
+    --pf-background: var(--colour-background);
+    --pf-border: var(--colour-background-accent-strong);
+    --pf-border-focus: var(--colour-links);
+    --pf-hover: var(--colour-background-accent-light);
+    --pf-mark: var(--colour-text-strong);
+    --pf-outline-width: 0px;
+    --pf-input-height: 30px;
+    --pf-border-radius: 3px;
+    --pf-searchbox-max-width: 100%;
 }
 
 img.invert-in-dark-mode {
@@ -420,182 +433,6 @@ dl.footnote > dd {
     padding-bottom: 2rem;
     font-weight: bold;
 }
-/* Pagefind search styling (custom, no default CSS) */
-.pagefind-ui {
-    --pagefind-ui-primary: var(--colour-links);
-    --pagefind-ui-text: var(--colour-text);
-    --pagefind-ui-background: var(--colour-background);
-    --pagefind-ui-border: var(--colour-background-accent-strong);
-    font-family: inherit;
-    width: 100%;
-}
-
-/* Search form */
-.pagefind-ui__form {
-    position: relative;
-}
-
-/* Search icon */
-.pagefind-ui__form::before {
-    background-color: var(--pagefind-ui-text);
-    width: 14px;
-    height: 14px;
-    top: 8px;
-    left: 8px;
-    content: "";
-    position: absolute;
-    display: block;
-    opacity: 0.5;
-    -webkit-mask-image: url("data:image/svg+xml,%3Csvg width='18' height='18' viewBox='0 0 18 18' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12.7549 11.255H11.9649L11.6849 10.985C12.6649 9.845 13.2549 8.365 13.2549 6.755C13.2549 3.165 10.3449 0.255005 6.75488 0.255005C3.16488 0.255005 0.254883 3.165 0.254883 6.755C0.254883 10.345 3.16488 13.255 6.75488 13.255C8.36488 13.255 9.84488 12.665 10.9849 11.685L11.2549 11.965V12.755L16.2549 17.745L17.7449 16.255L12.7549 11.255ZM6.75488 11.255C4.26488 11.255 2.25488 9.245 2.25488 6.755C2.25488 4.26501 4.26488 2.255 6.75488 2.255C9.24488 2.255 11.2549 4.26501 11.2549 6.755C11.2549 9.245 9.24488 11.255 6.75488 11.255Z' fill='%23000000'/%3E%3C/svg%3E%0A");
-    mask-image: url("data:image/svg+xml,%3Csvg width='18' height='18' viewBox='0 0 18 18' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12.7549 11.255H11.9649L11.6849 10.985C12.6649 9.845 13.2549 8.365 13.2549 6.755C13.2549 3.165 10.3449 0.255005 6.75488 0.255005C3.16488 0.255005 0.254883 3.165 0.254883 6.755C0.254883 10.345 3.16488 13.255 6.75488 13.255C8.36488 13.255 9.84488 12.665 10.9849 11.685L11.2549 11.965V12.755L16.2549 17.745L17.7449 16.255L12.7549 11.255ZM6.75488 11.255C4.26488 11.255 2.25488 9.245 2.25488 6.755C2.25488 4.26501 4.26488 2.255 6.75488 2.255C9.24488 2.255 11.2549 4.26501 11.2549 6.755C11.2549 9.245 9.24488 11.255 6.75488 11.255Z' fill='%23000000'/%3E%3C/svg%3E%0A");
-    -webkit-mask-size: 100%;
-    mask-size: 100%;
-    z-index: 9;
-    pointer-events: none;
-}
-
-/* Search input */
-.pagefind-ui__search-input {
-    height: 30px;
-    padding: 4px 28px 4px 28px;
-    background-color: var(--pagefind-ui-background);
-    border: 1px solid var(--pagefind-ui-border);
-    border-radius: 3px;
-    font-size: 0.875rem;
-    font-family: inherit;
-    appearance: none;
-    -webkit-appearance: none;
-    width: 100%;
-    box-sizing: border-box;
-    color: var(--pagefind-ui-text);
-}
-.pagefind-ui__search-input:focus {
-    outline: none;
-    border-color: var(--pagefind-ui-primary);
-}
-.pagefind-ui__search-input::placeholder {
-    color: var(--pagefind-ui-text);
-    opacity: 0.5;
-}
-
-/* Clear button - fixed position relative to input (30px height, center button) */
-.pagefind-ui__search-clear {
-    position: absolute;
-    top: 5px;
-    right: 4px;
-    padding: 2px 6px;
-    color: var(--pagefind-ui-text);
-    font-size: 0.75rem;
-    cursor: pointer;
-    background-color: var(--pagefind-ui-background);
-    border: none;
-    opacity: 0.6;
-}
-.pagefind-ui__search-clear:hover {
-    opacity: 1;
-}
-
-/* Results container */
-.pagefind-ui__results-area {
-    margin-top: 0.5rem;
-}
-
-/* Results list */
-#pep-sidebar .pagefind-ui__results {
-    list-style: none;
-    padding: 0;
-    margin: 0;
-}
-
-/* Individual result */
-.pagefind-ui__result {
-    padding: 0.5rem 0 0.5rem 0.5rem;
-    border-bottom: 1px solid var(--colour-rule-light);
-}
-.pagefind-ui__result:last-child {
-    border-bottom: none;
-}
-
-/* Result link */
-.pagefind-ui__result-link {
-    font-weight: bold;
-    font-size: 0.9rem;
-    text-decoration: none;
-    color: var(--colour-links);
-}
-.pagefind-ui__result-link:hover {
-    text-decoration: underline;
-}
-
-/* Result title */
-.pagefind-ui__result-title {
-    margin: 0;
-}
-
-/* Result excerpt/snippet */
-.pagefind-ui__result-excerpt {
-    font-size: 0.8rem;
-    color: var(--colour-text);
-    margin: 0.25rem 0 0;
-    line-height: 1.4;
-}
-
-/* Highlight matches in results */
-.pagefind-ui__result-excerpt mark,
-mark.pagefind-ui__highlight {
-    background-color: var(--colour-caution);
-    color: inherit;
-    padding: 0 2px;
-}
-
-/* Message when no results */
-.pagefind-ui__message {
-    font-size: 0.85rem;
-    color: var(--colour-text);
-    padding: 0.5rem 0;
-}
-
-/* Loading state */
-.pagefind-ui__loading {
-    font-size: 0.85rem;
-    color: var(--colour-text);
-    opacity: 0.7;
-}
-
-/* Sub-results (nested) */
-.pagefind-ui__result-nested {
-    margin-left: 1rem;
-    padding: 0.25rem 0;
-}
-.pagefind-ui__result-nested .pagefind-ui__result-link {
-    font-weight: normal;
-    font-size: 0.85rem;
-}
-
-/* Button styling */
-.pagefind-ui__button {
-    background: var(--colour-background-accent-light);
-    border: 1px solid var(--colour-background-accent-strong);
-    padding: 0.4rem 0.8rem;
-    border-radius: 4px;
-    cursor: pointer;
-    font-size: 0.85rem;
-    color: var(--colour-text);
-    margin-top: 0.5rem;
-}
-.pagefind-ui__button:hover {
-    background: var(--colour-background-accent-medium);
-}
-
-/* Drawer (expandable results container) */
-.pagefind-ui__drawer {
-    overflow: hidden;
-}
-
-/* Suppress unused pagefind elements */
-.pagefind-ui__suppressed {
-    display: none;
-}
 
 .reference.external > strong {
     font-weight: normal;  /* Fix strong links for :pep: and :rfc: roles */

pep_sphinx_extensions/pep_theme/templates/page.html

@@ -8,6 +8,7 @@
     <title>{{ title + " | peps.python.org"|safe }}</title>
     <link rel="shortcut icon" href="{{ pathto('_static/py.png', resource=True) }}">
     <link rel="canonical" href="https://peps.python.org/{{ pagename }}/">
+    <link rel="stylesheet" href="/pagefind/pagefind-component-ui.css" type="text/css">
     <link rel="stylesheet" href="{{ pathto('_static/style.css', resource=True) }}" type="text/css">
     <link rel="stylesheet" href="{{ pathto('_static/mq.css', resource=True) }}" type="text/css">
     <link rel="stylesheet" href="{{ pathto('_static/pygments.css', resource=True) }}" type="text/css" media="(prefers-color-scheme: light)" id="pyg-light">
@@ -47,7 +48,9 @@ <h1 data-pagefind-ignore>Python Enhancement Proposals</h1>
             </button>
         </header>
         {# Mobile search box - visible only on small screens #}
-        <div id="mobile-search" class="mobile-search-container"></div>
+        <div id="mobile-search" class="mobile-search-container">
+            <pagefind-searchbox hide-shortcut style="font-family: inherit"></pagefind-searchbox>
+        </div>
         {# Exclude noisy non-PEP pages from Pagefind indexing #}
         {%- if pagename.startswith(("404", "numerical", "pep-0000", "topic")) %}
         <article>
@@ -60,7 +63,7 @@ <h1 data-pagefind-ignore>Python Enhancement Proposals</h1>
         </article>
         {%- if not pagename.startswith(("404", "numerical")) %}
         <nav id="pep-sidebar">
-            <div id="search"></div>
+            <pagefind-searchbox shortcut="/" style="font-family: inherit"></pagefind-searchbox>
             <h2>Contents</h2>
             {{ toc }}
             <br>
@@ -79,25 +82,6 @@ <h2>Contents</h2>
     {%- endif %}
     <script src="https://analytics.python.org/js/script.outbound-links.js"
             data-domain="peps.python.org" defer></script>
-    <script src="/pagefind/pagefind-ui.js"></script>
-    <script>
-        window.addEventListener('DOMContentLoaded', (event) => {
-            // Ranking configuration to boost exact title matches
-            const searchOptions = {
-                ranking: {
-                    termSimilarity: 9.0, // Higher values favor exact matches
-                    termFrequency: 0.5, // Lower values reduce penalty for low term frequency
-                    pageLength: 0.2, // Lower values reduce the impact of page length
-                }
-            };
-
-            // Initialize pagefind for either mobile or desktop, not both
-            if (window.innerWidth <= 640) {
-                new PagefindUI({ element: "#mobile-search", ...searchOptions, showSubResults: false });
-            } else {
-                new PagefindUI({ element: "#search", ...searchOptions, showSubResults: true });
-            }
-        });
-    </script>
+    <script src="/pagefind/pagefind-component-ui.js" type="module"></script>
 </body>
 </html>