Remove most jQuery function calls from the repository topic box (#30191)

Remove most jQuery function calls

---------

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/repo/home.tmpl

@@ -18,22 +18,21 @@
 				</div>
 			</form>
 		</div>
-		<div class="tw-flex tw-items-center tw-flex-wrap tw-gap-1" id="repo-topics">
-			{{range .Topics}}<a class="ui repo-topic large label topic tw-m-0" href="{{AppSubUrl}}/explore/repos?q={{.Name}}&topic=1">{{.Name}}</a>{{end}}
+		<div class="tw-flex tw-items-center tw-flex-wrap tw-gap-2 tw-my-2" id="repo-topics">
+			{{/* it should match the code in issue-home.js */}}
+			{{range .Topics}}<a class="repo-topic ui large label" href="{{AppSubUrl}}/explore/repos?q={{.Name}}&topic=1">{{.Name}}</a>{{end}}
 			{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}<button id="manage_topic" class="btn interact-fg tw-text-12">{{ctx.Locale.Tr "repo.topic.manage_topics"}}</button>{{end}}
 		</div>
 		{{end}}
 		{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}
-		<div class="ui form tw-hidden tw-flex tw-flex-col tw-mt-4" id="topic_edit">
-			<div class="field tw-flex-1 tw-mb-1">
-				<div class="ui fluid multiple search selection dropdown tw-flex-wrap" data-text-count-prompt="{{ctx.Locale.Tr "repo.topic.count_prompt"}}" data-text-format-prompt="{{ctx.Locale.Tr "repo.topic.format_prompt"}}">
-					<input type="hidden" name="topics" value="{{range $i, $v := .Topics}}{{.Name}}{{if Eval $i "+" 1 "<" (len $.Topics)}},{{end}}{{end}}">
-					{{range .Topics}}
-						{{/* keey the same layout as Fomantic UI generated labels */}}
-						<a class="ui label transition visible tw-cursor-default tw-inline-block" data-value="{{.Name}}">{{.Name}}{{svg "octicon-x" 16 "delete icon"}}</a>
-					{{end}}
-					<div class="text"></div>
-				</div>
+		<div class="ui form tw-hidden tw-flex tw-gap-2 tw-my-2" id="topic_edit">
+			<div class="ui fluid multiple search selection dropdown tw-flex-wrap tw-flex-1">
+				<input type="hidden" name="topics" value="{{range $i, $v := .Topics}}{{.Name}}{{if Eval $i "+" 1 "<" (len $.Topics)}},{{end}}{{end}}">
+				{{range .Topics}}
+					{{/* keep the same layout as Fomantic UI generated labels */}}
+					<a class="ui label transition visible tw-cursor-default tw-inline-block" data-value="{{.Name}}">{{.Name}}{{svg "octicon-x" 16 "delete icon"}}</a>
+				{{end}}
+				<div class="text"></div>
 			</div>
 			<div>
 				<button class="ui basic button" id="cancel_topic_edit">{{ctx.Locale.Tr "cancel"}}</button>

web_src/css/repo.css

@@ -2437,6 +2437,7 @@ tbody.commit-list {
 #repo-topics .repo-topic {
   font-weight: var(--font-weight-normal);
   cursor: pointer;
+  margin: 0;
 }
 
 #new-dependency-drop-list.ui.selection.dropdown {

web_src/js/features/repo-home.js

@@ -1,55 +1,53 @@
 import $ from 'jquery';
 import {stripTags} from '../utils.js';
-import {hideElem, showElem} from '../utils/dom.js';
+import {hideElem, queryElemChildren, showElem} from '../utils/dom.js';
 import {POST} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
 
 const {appSubUrl} = window.config;
 
 export function initRepoTopicBar() {
   const mgrBtn = document.getElementById('manage_topic');
   if (!mgrBtn) return;
+
   const editDiv = document.getElementById('topic_edit');
   const viewDiv = document.getElementById('repo-topics');
-  const saveBtn = document.getElementById('save_topic');
-  const topicDropdown = editDiv.querySelector('.dropdown');
-  const $topicDropdown = $(topicDropdown);
-  const $topicForm = $(editDiv);
-  const $topicDropdownSearch = $topicDropdown.find('input.search');
-  const topicPrompts = {
-    countPrompt: topicDropdown.getAttribute('data-text-count-prompt') ?? undefined,
-    formatPrompt: topicDropdown.getAttribute('data-text-format-prompt') ?? undefined,
-  };
+  const topicDropdown = editDiv.querySelector('.ui.dropdown');
+  let lastErrorToast;
 
   mgrBtn.addEventListener('click', () => {
     hideElem(viewDiv);
     showElem(editDiv);
-    $topicDropdownSearch.trigger('focus');
+    topicDropdown.querySelector('input.search').focus();
   });
 
-  $('#cancel_topic_edit').on('click', () => {
+  document.querySelector('#cancel_topic_edit').addEventListener('click', () => {
+    lastErrorToast?.hideToast();
     hideElem(editDiv);
     showElem(viewDiv);
     mgrBtn.focus();
   });
 
-  saveBtn.addEventListener('click', async () => {
-    const topics = $('input[name=topics]').val();
+  document.getElementById('save_topic').addEventListener('click', async (e) => {
+    lastErrorToast?.hideToast();
+    const topics = editDiv.querySelector('input[name=topics]').value;
 
     const data = new FormData();
     data.append('topics', topics);
 
-    const response = await POST(saveBtn.getAttribute('data-link'), {data});
+    const response = await POST(e.target.getAttribute('data-link'), {data});
 
     if (response.ok) {
       const responseData = await response.json();
       if (responseData.status === 'ok') {
-        $(viewDiv).children('.topic').remove();
+        queryElemChildren(viewDiv, '.repo-topic', (el) => el.remove());
         if (topics.length) {
           const topicArray = topics.split(',');
           topicArray.sort();
           for (const topic of topicArray) {
+            // it should match the code in repo/home.tmpl
             const link = document.createElement('a');
-            link.classList.add('ui', 'repo-topic', 'large', 'label', 'topic', 'tw-m-0');
+            link.classList.add('repo-topic', 'ui', 'large', 'label');
             link.href = `${appSubUrl}/explore/repos?q=${encodeURIComponent(topic)}&topic=1`;
             link.textContent = topic;
             mgrBtn.parentNode.insertBefore(link, mgrBtn); // insert all new topics before manage button
@@ -59,27 +57,23 @@ export function initRepoTopicBar() {
         showElem(viewDiv);
       }
     } else if (response.status === 422) {
+      // how to test: input topic like " invalid topic " (with spaces), and select it from the list, then "Save"
       const responseData = await response.json();
+      lastErrorToast = showErrorToast(responseData.message, {duration: 5000});
       if (responseData.invalidTopics.length > 0) {
-        topicPrompts.formatPrompt = responseData.message;
-
         const {invalidTopics} = responseData;
-        const $topicLabels = $topicDropdown.children('a.ui.label');
+        const topicLabels = queryElemChildren(topicDropdown, 'a.ui.label');
         for (const [index, value] of topics.split(',').entries()) {
           if (invalidTopics.includes(value)) {
-            $topicLabels.eq(index).removeClass('green').addClass('red');
+            topicLabels[index].classList.remove('green');
+            topicLabels[index].classList.add('red');
           }
         }
-      } else {
-        topicPrompts.countPrompt = responseData.message;
       }
     }
-
-    // Always validate the form
-    $topicForm.form('validate form');
   });
 
-  $topicDropdown.dropdown({
+  $(topicDropdown).dropdown({
     allowAdditions: true,
     forceSelection: false,
     fullTextSearch: 'exact',
@@ -102,9 +96,9 @@ export function initRepoTopicBar() {
         const query = stripTags(this.urlData.query.trim());
         let found_query = false;
         const current_topics = [];
-        $topicDropdown.find('a.label.visible').each((_, el) => {
+        for (const el of queryElemChildren(topicDropdown, 'a.ui.label.visible')) {
           current_topics.push(el.getAttribute('data-value'));
-        });
+        }
 
         if (res.topics) {
           let found = false;
@@ -146,38 +140,8 @@ export function initRepoTopicBar() {
     },
     onAdd(addedValue, _addedText, $addedChoice) {
       addedValue = addedValue.toLowerCase().trim();
-      $($addedChoice)[0].setAttribute('data-value', addedValue);
-      $($addedChoice)[0].setAttribute('data-text', addedValue);
-    },
-  });
-
-  $.fn.form.settings.rules.validateTopic = function (_values, regExp) {
-    const $topics = $topicDropdown.children('a.ui.label');
-    const status = !$topics.length || $topics.last()[0].getAttribute('data-value').match(regExp);
-    if (!status) {
-      $topics.last().removeClass('green').addClass('red');
-    }
-    return status && !$topicDropdown.children('a.ui.label.red').length;
-  };
-
-  $topicForm.form({
-    on: 'change',
-    inline: true,
-    fields: {
-      topics: {
-        identifier: 'topics',
-        rules: [
-          {
-            type: 'validateTopic',
-            value: /^\s*[a-z0-9][-.a-z0-9]{0,35}\s*$/,
-            prompt: topicPrompts.formatPrompt,
-          },
-          {
-            type: 'maxCount[25]',
-            prompt: topicPrompts.countPrompt,
-          },
-        ],
-      },
+      $addedChoice[0].setAttribute('data-value', addedValue);
+      $addedChoice[0].setAttribute('data-text', addedValue);
     },
   });
 }

web_src/js/modules/toast.js

@@ -39,6 +39,7 @@ function showToast(message, level, {gravity, position, duration, useHtmlBody, ..
 
   toast.showToast();
   toast.toastElement.querySelector('.toast-close').addEventListener('click', () => toast.hideToast());
+  return toast;
 }
 
 export function showInfoToast(message, opts) {

web_src/js/utils/dom.js

@@ -51,8 +51,22 @@ export function isElemHidden(el) {
   return res[0];
 }
 
-export function queryElemSiblings(el, selector = '*') {
-  return Array.from(el.parentNode.children).filter((child) => child !== el && child.matches(selector));
+function applyElemsCallback(elems, fn) {
+  if (fn) {
+    for (const el of elems) {
+      fn(el);
+    }
+  }
+  return elems;
+}
+
+export function queryElemSiblings(el, selector = '*', fn) {
+  return applyElemsCallback(Array.from(el.parentNode.children).filter((child) => child !== el && child.matches(selector)), fn);
+}
+
+// it works like jQuery.children: only the direct children are selected
+export function queryElemChildren(parent, selector = '*', fn) {
+  return applyElemsCallback(parent.querySelectorAll(`:scope > ${selector}`), fn);
 }
 
 export function onDomReady(cb) {