Refactor hiding-methods, remove jQuery show/hide, remove `.hide` class, remove inline style=display:none (#22950)

Close #22847

This PR:

* introduce Gitea's own `showElem` and related functions
* remove jQuery show/hide
* remove .hide class
* remove inline style=display:none 

From now on:

do not use:
* "[hidden]" attribute: it's too weak, can not be applied to an element
with "display: flex"
* ".hidden" class: it has been polluted by Fomantic UI in many cases
* inline style="display: none": it's difficult to tweak
* jQuery's show/hide/toggle: it can not show/hide elements with
"display: xxx !important"

only use:
* this ".gt-hidden" class
* showElem/hideElem/toggleElem functions in "utils/dom.js"

cc: @silverwind , this is the all-in-one PR

1 files changed, 6 insertions, 6 deletions

diff --git a/web_src/js/features/repo-graph.js b/web_src/js/features/repo-graph.js
index 16d35e66f2..e445ae1103 100644
--- a/web_src/js/features/repo-graph.js
+++ b/web_src/js/features/repo-graph.js
@@ -56,17 +56,17 @@ export function initRepoGraphGit() {
     ajaxUrl.searchParams.set('div-only', 'true');
     window.history.replaceState({}, '', queryString ? `?${queryString}` : window.location.pathname);
     $('#pagination').empty();
-    $('#rel-container').addClass('hide');
-    $('#rev-container').addClass('hide');
-    $('#loading-indicator').removeClass('hide');
+    $('#rel-container').addClass('gt-hidden');
+    $('#rev-container').addClass('gt-hidden');
+    $('#loading-indicator').removeClass('gt-hidden');
     (async () => {
       const div = $(await $.ajax(String(ajaxUrl)));
       $('#pagination').html(div.find('#pagination').html());
       $('#rel-container').html(div.find('#rel-container').html());
       $('#rev-container').html(div.find('#rev-container').html());
-      $('#loading-indicator').addClass('hide');
-      $('#rel-container').removeClass('hide');
-      $('#rev-container').removeClass('hide');
+      $('#loading-indicator').addClass('gt-hidden');
+      $('#rel-container').removeClass('gt-hidden');
+      $('#rev-container').removeClass('gt-hidden');
     })();
   };
   const dropdownSelected = params.getAll('branch');