Fix all rounded borders, change affected tab menus to pills (#30707)

Fixes https://github.com/go-gitea/gitea/issues/30673, all 23 issues.
Notes:

- Tab bar menus had to change to pills because of unsolvable issue with
the border-radius as tab bar renders a overlapping border onto the box
below. And I think pills look better.
- Added padding to code editor empty preview message
- Hide monaco's built-in blue focus border, we don't need it and it
never showed before either.
- Label add menu is simplified, removing the nested segment.

<img width="1322" alt="Screenshot 2024-04-25 at 22 26 19"
src="https://github.com/go-gitea/gitea/assets/115237/7e394e0c-b7ad-417d-8e9f-12f1dea93ed1">
<img width="1326" alt="Screenshot 2024-04-25 at 22 28 00"
src="https://github.com/go-gitea/gitea/assets/115237/66c8499f-aa9f-4d95-8cca-ef13dfa82c65">
<img width="997" alt="Screenshot 2024-04-25 at 22 36 53"
src="https://github.com/go-gitea/gitea/assets/115237/07896102-c71d-4246-8173-c2bc2e1d3cae">
<img width="832" alt="Screenshot 2024-04-25 at 22 56 09"
src="https://github.com/go-gitea/gitea/assets/115237/d83afc96-08ca-4adc-baf4-3d02804be57c">
<img width="361" alt="Screenshot 2024-04-25 at 22 57 12"
src="https://github.com/go-gitea/gitea/assets/115237/c7371a68-00b5-47d8-84d0-ddc5268b2b2c">

---------

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

2 files changed, 11 insertions, 8 deletions

diff --git a/web_src/js/features/codeeditor.js b/web_src/js/features/codeeditor.js
index f5e4e74dc6..4dfef8c2b2 100644
--- a/web_src/js/features/codeeditor.js
+++ b/web_src/js/features/codeeditor.js
@@ -98,6 +98,7 @@ export async function createMonaco(textarea, filename, editorOpts) {
       'input.foreground': getColor('--color-input-text'),
       'scrollbar.shadow': getColor('--color-shadow'),
       'progressBar.background': getColor('--color-primary'),
+      'focusBorder': '#0000', // prevent blue border
     },
   });
 
diff --git a/web_src/js/features/repo-editor.js b/web_src/js/features/repo-editor.js
index 01dc4b95aa..a5232cb4b6 100644
--- a/web_src/js/features/repo-editor.js
+++ b/web_src/js/features/repo-editor.js
@@ -7,9 +7,9 @@ import {attachRefIssueContextPopup} from './contextpopup.js';
 import {POST} from '../modules/fetch.js';
 
 function initEditPreviewTab($form) {
-  const $tabMenu = $form.find('.tabular.menu');
+  const $tabMenu = $form.find('.repo-editor-menu');
   $tabMenu.find('.item').tab();
-  const $previewTab = $tabMenu.find(`.item[data-tab="${$tabMenu.data('preview')}"]`);
+  const $previewTab = $tabMenu.find('a[data-tab="preview"]');
   if ($previewTab.length) {
     $previewTab.on('click', async function () {
       const $this = $(this);
@@ -24,13 +24,15 @@ function initEditPreviewTab($form) {
       const formData = new FormData();
       formData.append('mode', mode);
       formData.append('context', context);
-      formData.append('text', $form.find(`.tab[data-tab="${$tabMenu.data('write')}"] textarea`).val());
+      formData.append('text', $form.find('.tab[data-tab="write"] textarea').val());
       formData.append('file_path', $treePathEl.val());
       try {
         const response = await POST($this.data('url'), {data: formData});
         const data = await response.text();
-        const $previewPanel = $form.find(`.tab[data-tab="${$tabMenu.data('preview')}"]`);
-        renderPreviewPanelContent($previewPanel, data);
+        const $previewPanel = $form.find('.tab[data-tab="preview"]');
+        if ($previewPanel.length) {
+          renderPreviewPanelContent($previewPanel, data);
+        }
       } catch (error) {
         console.error('Error:', error);
       }
@@ -175,10 +177,10 @@ export function initRepoEditor() {
   })();
 }
 
-export function renderPreviewPanelContent($panelPreviewer, data) {
-  $panelPreviewer.html(data);
+export function renderPreviewPanelContent($previewPanel, data) {
+  $previewPanel.html(data);
   initMarkupContent();
 
-  const $refIssues = $panelPreviewer.find('p .ref-issue');
+  const $refIssues = $previewPanel.find('p .ref-issue');
   attachRefIssueContextPopup($refIssues);
 }