From ddeb84d86823ca617d57f487d10fb92bb670a036 Mon Sep 17 00:00:00 2001
From: Doug Davis <duglin@gmail.com>
Date: Wed, 28 Oct 2026 19:07:42 +0000
Subject: [PATCH] disable pagination first/last buttons when needed

Signed-off-by: Doug Davis <duglin@gmail.com>
---
 misc/largetest          |  1 +
 registry/http/ui/app.js | 12 ++++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/misc/largetest b/misc/largetest
index 7ec2501..ee9994c 100755
--- a/misc/largetest
+++ b/misc/largetest
@@ -29,6 +29,7 @@
 # 1e95cb88cbb2 2m13s   2m40s  34s     Pagination part 2/UI support
 # 035a8ce55604 2m12s   2m38s  34s     Remove defaultWriter
 # af1e4527e1ab 2m20s   2m36s  33s     Remove shared* files
+# 4ef52aea3e73 2m6s    2m33s  34s     Remove lowerxid index/col
 
 set -e
 
diff --git a/registry/http/ui/app.js b/registry/http/ui/app.js
index df3f843..b3a991c 100644
--- a/registry/http/ui/app.js
+++ b/registry/http/ui/app.js
@@ -7300,24 +7300,28 @@ function paginationBarHtml(itemCount) {
   }
   var countText = parts.join(' \u00b7 ');
 
-  function btn(rel, pairShown, icon, title) {
+  function btn(rel, pairShown, icon, title, atEnd) {
     if (!pairShown) return '';
-    var has = !!_lastPageLinks[rel];
+    var has = !!_lastPageLinks[rel] && !atEnd;
     return '<button class="cfg-btn eg-page-nav-btn" title="' + esc(title) + '"'
       + (has ? ' onclick="navigateToPage(\'' + rel + '\')"' : ' disabled')
       + '>' + icon + '</button>';
   }
 
+  // First/Last are disabled on the first/last page (no prev/next), even if
+  // the server returned those links, since they'd be no-ops there.
   var showFirstLast = !!(_lastPageLinks.first || _lastPageLinks.last);
+  var onFirstPage = !_lastPageLinks.prev;
+  var onLastPage  = !_lastPageLinks.next;
   var showPrevNext  = !!(_lastPageLinks.prev  || _lastPageLinks.next);
 
   return '<span class="eg-pagination-bar">'
     + '<span class="eg-pagination-count">' + esc(countText) + '</span>'
     + '<span class="eg-pagination-buttons">'
-    +   btn('first', showFirstLast, _pageFirstIconSVG, 'First')
+    +   btn('first', showFirstLast, _pageFirstIconSVG, 'First', onFirstPage)
     +   btn('prev',  showPrevNext,  _pagePrevIconSVG,  'Prev')
     +   btn('next',  showPrevNext,  _pageNextIconSVG,  'Next')
-    +   btn('last',  showFirstLast, _pageLastIconSVG,  'Last')
+    +   btn('last',  showFirstLast, _pageLastIconSVG,  'Last', onLastPage)
     + '</span>'
     + '</span>';
 }