Rewrite and restyle reaction selector and enable no-sizzle eslint rule (#30453)

Enable `no-sizzle` lint rule, there was only one use in `initCompReactionSelector` and:

- Remove all jQuery except the necessary fomantic dropdown init
- Remove the recursion, instead bind event listeners to common parent container nodes

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

8 files changed, 110 insertions, 152 deletions

diff --git a/web_src/css/base.css b/web_src/css/base.css
index c6a22a5dc4..02067971a0 100644
--- a/web_src/css/base.css
+++ b/web_src/css/base.css
@@ -1366,8 +1366,7 @@ table th[data-sortt-desc] .svg {
   box-shadow: 0 0 0 1px var(--color-secondary) inset;
 }
 
-.emoji,
-.reaction {
+.emoji {
   font-size: 1.25em;
   line-height: var(--line-height-default);
   font-style: normal !important;
@@ -1375,8 +1374,7 @@ table th[data-sortt-desc] .svg {
   vertical-align: -0.075em;
 }
 
-.emoji img,
-.reaction img {
+.emoji img {
   border-width: 0 !important;
   margin: 0 !important;
   width: 1em !important;
diff --git a/web_src/css/index.css b/web_src/css/index.css
index ad59f32636..73e10eedcb 100644
--- a/web_src/css/index.css
+++ b/web_src/css/index.css
@@ -62,6 +62,7 @@
 @import "./repo/linebutton.css";
 @import "./repo/wiki.css";
 @import "./repo/header.css";
+@import "./repo/reactions.css";
 
 @import "./editor/fileeditor.css";
 @import "./editor/combomarkdowneditor.css";
diff --git a/web_src/css/modules/comment.css b/web_src/css/modules/comment.css
index 799eeb8574..cf080db225 100644
--- a/web_src/css/modules/comment.css
+++ b/web_src/css/modules/comment.css
@@ -16,7 +16,7 @@
 .ui.comments .comment {
   position: relative;
   background: none;
-  margin: 0.5em 0 0;
+  margin: 3px 0 0;
   padding: 0.5em 0 0;
   border: none;
   border-top: none;
diff --git a/web_src/css/repo.css b/web_src/css/repo.css
index edb3bc2e87..4b7ad49677 100644
--- a/web_src/css/repo.css
+++ b/web_src/css/repo.css
@@ -913,6 +913,9 @@ td .commit-summary {
 
 .repository.view.issue .comment-list .ui.comments {
   max-width: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
 }
 
 .repository.view.issue .comment-list .comment > .content > div:first-child {
@@ -928,6 +931,11 @@ td .commit-summary {
 .repository.view.issue .comment-list .comment .comment-container {
   border: 1px solid var(--color-secondary);
   border-radius: var(--border-radius);
+  background: var(--color-box-body);
+}
+
+.repository.view.issue .comment-list .conversation-holder .comment .comment-container {
+  border: none;
 }
 
 @media (max-width: 767.98px) {
@@ -1042,30 +1050,6 @@ td .commit-summary {
   margin-left: 42px;
 }
 
-.repository.view.issue .comment-list .comment-code-cloud .segment.reactions {
-  margin-top: 16px !important;
-  margin-bottom: -8px !important;
-  border-top: none !important;
-}
-
-.repository.view.issue .comment-list .comment-code-cloud .segment.reactions .ui.label {
-  border: 1px solid;
-  padding: 5px 8px !important;
-  margin: 0 2px;
-  border-radius: var(--border-radius);
-  border-color: var(--color-secondary-dark-1) !important;
-}
-
-.repository.view.issue .comment-list .comment-code-cloud .segment.reactions .ui.label.basic.primary {
-  background-color: var(--color-reaction-active-bg) !important;
-  border-color: var(--color-primary-alpha-80) !important;
-}
-
-.repository.view.issue .comment-list .comment-code-cloud .segment.reactions .ui.label.basic.primary:hover {
-  background-color: var(--color-reaction-hover-bg) !important;
-  border-color: var(--color-primary-alpha-80) !important;
-}
-
 .repository.view.issue .comment-list .comment-code-cloud button.comment-form-reply {
   margin: 0;
 }
@@ -1902,98 +1886,6 @@ td .commit-summary {
   border-bottom: 1px solid var(--color-warning-border);
 }
 
-.repository .segment.reactions.dropdown .menu,
-.repository .select-reaction.dropdown .menu {
-  right: 0 !important;
-  left: auto !important;
-  min-width: 170px;
-}
-
-.repository .segment.reactions.dropdown .menu > .header,
-.repository .select-reaction.dropdown .menu > .header {
-  margin: 0.75rem 0 0.5rem;
-}
-
-.repository .segment.reactions.dropdown .menu > .item,
-.repository .select-reaction.dropdown .menu > .item {
-  float: left;
-  margin: 4px;
-  font-size: 20px;
-  width: 34px;
-  height: 34px;
-  min-height: 0 !important;
-  border-radius: var(--border-radius);
-  display: flex !important;
-  align-items: center;
-  justify-content: center;
-}
-
-.repository .segment.reactions {
-  padding: 0;
-  display: flex;
-  border: none !important;
-  border-top: 1px solid var(--color-secondary) !important;
-  width: 100% !important;
-  max-width: 100% !important;
-  margin: 0 !important;
-  border-radius: 0 0 var(--border-radius) var(--border-radius);
-}
-
-.repository .segment.reactions .ui.label {
-  max-height: 40px;
-  padding: 8px 16px !important;
-  display: flex !important;
-  align-items: center;
-  border: 0;
-  border-right: 1px solid;
-  border-radius: 0;
-  margin: 0;
-  font-size: 12px;
-  font-weight: var(--font-weight-normal);
-  border-color: var(--color-secondary) !important;
-  background: var(--color-reaction-bg);
-}
-
-.repository .segment.reactions .ui.label:first-of-type {
-  border-bottom-left-radius: 3px;
-}
-
-.repository .segment.reactions .ui.label.disabled {
-  cursor: default;
-  opacity: 1;
-}
-
-.repository .segment.reactions .ui.label.basic.primary {
-  color: var(--color-primary) !important;
-  background-color: var(--color-reaction-active-bg) !important;
-  border-color: var(--color-secondary-dark-1) !important;
-}
-
-.repository .segment.reactions .ui.label.basic:hover {
-  background-color: var(--color-reaction-hover-bg) !important;
-}
-
-.repository .segment.reactions .reaction-count {
-  margin-left: 0.5rem;
-}
-
-.repository .segment.reactions .select-reaction {
-  display: flex;
-  align-items: center;
-}
-
-.repository .segment.reactions .select-reaction a {
-  padding: 0 14px;
-}
-
-.repository .segment.reactions .select-reaction:not(.active) a {
-  display: none;
-}
-
-.repository .segment.reactions:hover .select-reaction a {
-  display: block;
-}
-
 .repository .ui.fluid.action.input .ui.search.action.input {
   flex: auto;
 }
diff --git a/web_src/css/repo/reactions.css b/web_src/css/repo/reactions.css
new file mode 100644
index 0000000000..8fe01af4f0
--- /dev/null
+++ b/web_src/css/repo/reactions.css
@@ -0,0 +1,70 @@
+.bottom-reactions {
+  display: flex;
+  gap: 6px;
+  margin: 0 1em 1em;
+}
+
+.timeline-item .conversation-holder .bottom-reactions {
+  margin: 1em 0 0 36px;
+  padding-bottom: 8px;
+}
+
+.bottom-reactions .ui.label {
+  padding: 5px 8px;
+  font-weight: var(--font-weight-normal);
+}
+
+.bottom-reactions .ui.label.primary {
+  background-color: var(--color-reaction-active-bg) !important;
+}
+
+.bottom-reactions .ui.label:hover {
+  background-color: var(--color-reaction-hover-bg) !important;
+}
+
+.bottom-reactions .ui.label.disabled {
+  cursor: default;
+  opacity: 1;
+}
+
+.bottom-reactions .ui.label .reaction {
+  font-size: 16px;
+  display: flex;
+}
+
+.bottom-reactions .ui.label .reaction img {
+  height: 16px;
+  aspect-ratio: 1;
+}
+
+.bottom-reactions .reaction-count {
+  margin-left: 4px;
+}
+
+.ui.dropdown.select-reaction .menu {
+  min-width: 170px; /* item-outer-width * 4 */
+}
+
+.ui.dropdown.select-reaction .menu > .item {
+  float: left;
+  margin: 4px;
+  font-size: 20px;
+  width: 34px;
+  height: 34px;
+  border-radius: var(--border-radius);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.bottom-reactions .select-reaction {
+  padding: 0 10px;
+}
+
+.bottom-reactions .select-reaction:not(.active) {
+  visibility: hidden;
+}
+
+.bottom-reactions:hover .select-reaction {
+  visibility: visible;
+}
diff --git a/web_src/js/features/comp/ReactionSelector.js b/web_src/js/features/comp/ReactionSelector.js
index 2def3db51a..e507b89632 100644
--- a/web_src/js/features/comp/ReactionSelector.js
+++ b/web_src/js/features/comp/ReactionSelector.js
@@ -1,38 +1,36 @@
 import $ from 'jquery';
 import {POST} from '../../modules/fetch.js';
 
-export function initCompReactionSelector($parent) {
-  $parent.find(`.select-reaction .item.reaction, .comment-reaction-button`).on('click', async function (e) {
-    e.preventDefault();
+export function initCompReactionSelector() {
+  for (const container of document.querySelectorAll('.issue-content, .diff-file-body')) {
+    container.addEventListener('click', async (e) => {
+      // there are 2 places for the "reaction" buttons, one is the top-right reaction menu, one is the bottom of the comment
+      const target = e.target.closest('.comment-reaction-button');
+      if (!target) return;
+      e.preventDefault();
 
-    if (this.classList.contains('disabled')) return;
+      if (target.classList.contains('disabled')) return;
 
-    const actionUrl = this.closest('[data-action-url]')?.getAttribute('data-action-url');
-    const reactionContent = this.getAttribute('data-reaction-content');
-    const hasReacted = this.closest('.ui.segment.reactions')?.querySelector(`a[data-reaction-content="${reactionContent}"]`)?.getAttribute('data-has-reacted') === 'true';
+      const actionUrl = target.closest('[data-action-url]').getAttribute('data-action-url');
+      const reactionContent = target.getAttribute('data-reaction-content');
 
-    const res = await POST(`${actionUrl}/${hasReacted ? 'unreact' : 'react'}`, {
-      data: new URLSearchParams({content: reactionContent}),
-    });
+      const commentContainer = target.closest('.comment-container');
 
-    const data = await res.json();
-    if (data && (data.html || data.empty)) {
-      const $content = $(this).closest('.content');
-      let $react = $content.find('.segment.reactions');
-      if ((!data.empty || data.html === '') && $react.length > 0) {
-        $react.remove();
-      }
-      if (!data.empty) {
-        const $attachments = $content.find('.segment.bottom:first');
-        $react = $(data.html);
-        if ($attachments.length > 0) {
-          $react.insertBefore($attachments);
-        } else {
-          $react.appendTo($content);
-        }
-        $react.find('.dropdown').dropdown();
-        initCompReactionSelector($react);
+      const bottomReactions = commentContainer.querySelector('.bottom-reactions'); // may not exist if there is no reaction
+      const bottomReactionBtn = bottomReactions?.querySelector(`a[data-reaction-content="${CSS.escape(reactionContent)}"]`);
+      const hasReacted = bottomReactionBtn?.getAttribute('data-has-reacted') === 'true';
+
+      const res = await POST(`${actionUrl}/${hasReacted ? 'unreact' : 'react'}`, {
+        data: new URLSearchParams({content: reactionContent}),
+      });
+
+      const data = await res.json();
+      bottomReactions?.remove();
+      if (data.html) {
+        commentContainer.insertAdjacentHTML('beforeend', data.html);
+        const bottomReactionsDropdowns = commentContainer.querySelectorAll('.bottom-reactions .dropdown.select-reaction');
+        $(bottomReactionsDropdowns).dropdown(); // re-init the dropdown
       }
-    }
-  });
+    });
+  }
 }
diff --git a/web_src/js/features/repo-diff.js b/web_src/js/features/repo-diff.js
index b2e8ec4866..00f74515df 100644
--- a/web_src/js/features/repo-diff.js
+++ b/web_src/js/features/repo-diff.js
@@ -87,7 +87,6 @@ function initRepoDiffConversationForm() {
         el.classList.add('tw-invisible');
       }
       $newConversationHolder.find('.dropdown').dropdown();
-      initCompReactionSelector($newConversationHolder);
     } catch (error) {
       console.error('Error:', error);
       showErrorToast(i18n.network_error);
diff --git a/web_src/js/features/repo-legacy.js b/web_src/js/features/repo-legacy.js
index e83de27e4c..18d98c891d 100644
--- a/web_src/js/features/repo-legacy.js
+++ b/web_src/js/features/repo-legacy.js
@@ -393,7 +393,7 @@ export function initRepository() {
     initRepoIssueDependencyDelete();
     initRepoIssueCodeCommentCancel();
     initRepoPullRequestUpdate();
-    initCompReactionSelector($(document));
+    initCompReactionSelector();
 
     initRepoPullRequestMergeForm();
     initRepoPullRequestCommitStatus();