Improve reviewing PR UX (#19612)

web_src/js/features/repo-diff.js

@@ -6,8 +6,23 @@ import {validateTextareaNonEmpty} from './comp/EasyMDE.js';
 const {csrfToken} = window.config;
 
 export function initRepoDiffReviewButton() {
+  const $reviewBox = $('#review-box');
+  const $counter = $reviewBox.find('.review-comments-counter');
+
   $(document).on('click', 'button[name="is_review"]', (e) => {
-    $(e.target).closest('form').append('<input type="hidden" name="is_review" value="true">');
+    const $form = $(e.target).closest('form');
+    $form.append('<input type="hidden" name="is_review" value="true">');
+
+    // Watch for the form's submit event.
+    $form.on('submit', () => {
+      const num = parseInt($counter.attr('data-pending-comment-number')) + 1 || 1;
+      $counter.attr('data-pending-comment-number', num);
+      $counter.text(num);
+      // Force the browser to reflow the DOM. This is to ensure that the browser replay the animation
+      $reviewBox.removeClass('pulse');
+      $reviewBox.width();
+      $reviewBox.addClass('pulse');
+    });
   });
 }
 

web_src/js/features/repo-issue.js

@@ -160,6 +160,16 @@ export function initRepoIssueCommentDelete() {
         _csrf: csrfToken,
       }).done(() => {
         const $conversationHolder = $this.closest('.conversation-holder');
+
+        // Check if this was a pending comment.
+        if ($conversationHolder.find('.pending-label').length) {
+          const $counter = $('#review-box .review-comments-counter');
+          let num = parseInt($counter.attr('data-pending-comment-number')) - 1 || 0;
+          num = Math.max(num, 0);
+          $counter.attr('data-pending-comment-number', num);
+          $counter.text(num);
+        }
+
         $(`#${$this.data('comment-id')}`).remove();
         if ($conversationHolder.length && !$conversationHolder.find('.comment').length) {
           const path = $conversationHolder.data('path');

web_src/less/_review.less

@@ -242,6 +242,19 @@ a.blob-excerpt:hover {
   border: none !important;
 }
 
+#review-box .review-comments-counter {
+  background-color: var(--color-primary-light-4);
+  color: #fff;
+}
+
+#review-box:hover .review-comments-counter {
+  background-color: var(--color-primary-light-5);
+}
+
+#review-box .review-comments-counter[data-pending-comment-number="0"] {
+  display: none;
+}
+
 .pull.files.diff [id] {
   scroll-margin-top: 99px;
 

web_src/less/animations.less

@@ -50,3 +50,19 @@
     opacity: 0;
   }
 }
+
+@keyframes pulse {
+  0% {
+    transform: scale(1);
+  }
+  50% {
+    transform: scale(1.8);
+  }
+  100% {
+    transform: scale(1);
+  }
+}
+
+.pulse {
+  animation: pulse 2s linear;
+}