From 0e0381132af7f9efe7fc725dd5acf8d7f41284f3 Mon Sep 17 00:00:00 2001
From: "Julio C. Estrada" <estradacjulio@gmail.com>
Date: Fri, 16 Jan 2026 03:30:14 -0500
Subject: [PATCH] Add Lunr search UI integration (#580)

- Add search input field to toolbar (conditionally rendered when
  SITE_SEARCH_PROVIDER is set)
- Load lunr.js, search-ui.js, and search-index.js scripts
- Add maximum-scale=1 to viewport meta tag for better mobile behavior

Refs: boostorg/boostlook#142
---
 antora-ui/src/partials/footer-scripts.hbs |  6 ++++++
 antora-ui/src/partials/head-prelude.hbs   |  2 +-
 antora-ui/src/partials/header-content.hbs | 11 +++++------
 antora-ui/src/partials/toolbar.hbs        |  7 +++++++
 4 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/antora-ui/src/partials/footer-scripts.hbs b/antora-ui/src/partials/footer-scripts.hbs
index 0e9a96b..e7cba0d 100644
--- a/antora-ui/src/partials/footer-scripts.hbs
+++ b/antora-ui/src/partials/footer-scripts.hbs
@@ -1,3 +1,9 @@
 <script id="site-script" src="{{{uiRootPath}}}/js/site.js" data-ui-root-path="{{{uiRootPath}}}"></script>
 <script async src="{{{uiRootPath}}}/js/vendor/highlight.js"></script>
 <script async src="{{{uiRootPath}}}/js/vendor/tabs.js" data-sync-storage-key="preferred-tab"></script>
+{{#if env.SITE_SEARCH_PROVIDER}}
+<script async src="{{{uiRootPath}}}/js/vendor/lunr.js"></script>
+<script async src="{{{uiRootPath}}}/js/search-ui.js" id="search-ui-script" data-site-root-path="{{{siteRootPath}}}"
+  data-ui-root-path="{{{uiRootPath}}}"></script>
+<script async src="{{{siteRootPath}}}/search-index.js"></script>
+{{/if}}
\ No newline at end of file
diff --git a/antora-ui/src/partials/head-prelude.hbs b/antora-ui/src/partials/head-prelude.hbs
index a8b267d..ab7b697 100644
--- a/antora-ui/src/partials/head-prelude.hbs
+++ b/antora-ui/src/partials/head-prelude.hbs
@@ -1,2 +1,2 @@
     <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width,initial-scale=1">
+    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1">
diff --git a/antora-ui/src/partials/header-content.hbs b/antora-ui/src/partials/header-content.hbs
index fa45020..ce8b795 100644
--- a/antora-ui/src/partials/header-content.hbs
+++ b/antora-ui/src/partials/header-content.hbs
@@ -1,6 +1,5 @@
-<div id="header">
-  {{#if (and (eq page.component.latest.asciidoc.attributes.remove-sidenav undefined) (eq page.attributes.remove-sidenav
-  undefined))}}
-    {{> nav}}
-  {{/if}}
-</div>
+ <div id="header">
+    {{#if (and (eq page.component.latest.asciidoc.attributes.remove-sidenav undefined) (eq page.attributes.remove-sidenav undefined))}}
+      {{> nav}}
+    {{/if}}
+  </div>
\ No newline at end of file
diff --git a/antora-ui/src/partials/toolbar.hbs b/antora-ui/src/partials/toolbar.hbs
index e8b4fd0..b7be88a 100644
--- a/antora-ui/src/partials/toolbar.hbs
+++ b/antora-ui/src/partials/toolbar.hbs
@@ -1,5 +1,12 @@
 <div class="toolbar" role="navigation">
 {{> nav-toggle}}
 {{> breadcrumbs}}
+{{#if env.SITE_SEARCH_PROVIDER}}
+  <div class="search-container">
+    <div id="search-field" class="field has-filter">
+      <input id="search-input" type="text" placeholder="Search the docs" {{#if page.home}} autofocus{{/if}}>
+    </div>
+  </div>
+{{/if}}
 {{> pagination-spirit}}
 </div>