Batch delete issue and improve tippy opts (#25253)

1. Add "batch delete" button for selected issues, close #22273
2. Address the review in
https://github.com/go-gitea/gitea/pull/25219#discussion_r1229266083

web_src/js/features/common-global.js

@@ -8,6 +8,7 @@ import {svg} from '../svg.js';
 import {hideElem, showElem, toggleElem} from '../utils/dom.js';
 import {htmlEscape} from 'escape-goat';
 import {createTippy} from '../modules/tippy.js';
+import {confirmModal} from './comp/ConfirmModal.js';
 
 const {appUrl, appSubUrl, csrfToken, i18n} = window.config;
 
@@ -264,7 +265,7 @@ export function initGlobalDropzone() {
   }
 }
 
-function linkAction(e) {
+async function linkAction(e) {
   e.preventDefault();
 
   // A "link-action" can post AJAX request to its "data-url"
@@ -291,33 +292,16 @@ function linkAction(e) {
     });
   };
 
-  const modalConfirmHtml = htmlEscape($this.attr('data-modal-confirm') || '');
-  if (!modalConfirmHtml) {
+  const modalConfirmContent = htmlEscape($this.attr('data-modal-confirm') || '');
+  if (!modalConfirmContent) {
     doRequest();
     return;
   }
 
-  const okButtonColor = $this.hasClass('red') || $this.hasClass('yellow') || $this.hasClass('orange') || $this.hasClass('negative') ? 'orange' : 'green';
-
-  const $modal = $(`
-<div class="ui g-modal-confirm modal">
-  <div class="content">${modalConfirmHtml}</div>
-  <div class="actions">
-    <button class="ui basic cancel button">${svg('octicon-x')} ${i18n.modal_cancel}</button>
-    <button class="ui ${okButtonColor} ok button">${svg('octicon-check')} ${i18n.modal_confirm}</button>
-  </div>
-</div>
-`);
-
-  $modal.appendTo(document.body);
-  $modal.modal({
-    onApprove() {
-      doRequest();
-    },
-    onHidden() {
-      $modal.remove();
-    },
-  }).modal('show');
+  const isRisky = $this.hasClass('red') || $this.hasClass('yellow') || $this.hasClass('orange') || $this.hasClass('negative');
+  if (await confirmModal({content: modalConfirmContent, buttonColor: isRisky ? 'orange' : 'green'})) {
+    doRequest();
+  }
 }
 
 export function initGlobalLinkActions() {

web_src/js/features/comp/ConfirmModal.js

@@ -0,0 +1,30 @@
+import $ from 'jquery';
+import {svg} from '../../svg.js';
+import {htmlEscape} from 'escape-goat';
+
+const {i18n} = window.config;
+
+export async function confirmModal(opts = {content: '', buttonColor: 'green'}) {
+  return new Promise((resolve) => {
+    const $modal = $(`
+<div class="ui g-modal-confirm modal">
+  <div class="content">${htmlEscape(opts.content)}</div>
+  <div class="actions">
+    <button class="ui basic cancel button">${svg('octicon-x')} ${i18n.modal_cancel}</button>
+    <button class="ui ${opts.buttonColor || 'green'} ok button">${svg('octicon-check')} ${i18n.modal_confirm}</button>
+  </div>
+</div>
+`);
+
+    $modal.appendTo(document.body);
+    $modal.modal({
+      onApprove() {
+        resolve(true);
+      },
+      onHidden() {
+        $modal.remove();
+        resolve(false);
+      },
+    }).modal('show');
+  });
+}

web_src/js/features/repo-issue-list.js

@@ -3,6 +3,7 @@ import {updateIssuesMeta} from './repo-issue.js';
 import {toggleElem} from '../utils/dom.js';
 import {htmlEscape} from 'escape-goat';
 import {Sortable} from 'sortablejs';
+import {confirmModal} from './comp/ConfirmModal.js';
 
 function initRepoIssueListCheckboxes() {
   const $issueSelectAll = $('.issue-checkbox-all');
@@ -36,19 +37,36 @@ function initRepoIssueListCheckboxes() {
 
   $('.issue-action').on('click', async function (e) {
     e.preventDefault();
+
+    const url = this.getAttribute('data-url');
     let action = this.getAttribute('data-action');
     let elementId = this.getAttribute('data-element-id');
-    const url = this.getAttribute('data-url');
-    const issueIDs = $('.issue-checkbox:checked').map((_, el) => {
-      return el.getAttribute('data-issue-id');
-    }).get().join(',');
-    if (elementId === '0' && url.slice(-9) === '/assignee') {
+    let issueIDs = [];
+    for (const el of document.querySelectorAll('.issue-checkbox:checked')) {
+      issueIDs.push(el.getAttribute('data-issue-id'));
+    }
+    issueIDs = issueIDs.join(',');
+    if (!issueIDs) return;
+
+    // for assignee
+    if (elementId === '0' && url.endsWith('/assignee')) {
       elementId = '';
       action = 'clear';
     }
+
+    // for toggle
     if (action === 'toggle' && e.altKey) {
       action = 'toggle-alt';
     }
+
+    // for delete
+    if (action === 'delete') {
+      const confirmText = e.target.getAttribute('data-action-delete-confirm');
+      if (!await confirmModal({content: confirmText, buttonColor: 'orange'})) {
+        return;
+      }
+    }
+
     updateIssuesMeta(
       url,
       action,