Performance, UX, and Accessibility Optimizations#134
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Pull request overview
This PR updates the web app and mirrored desktop-app resources to improve UX/a11y and adjust a few UI sizing + syntax highlighting variables.
Changes:
- Adjusts syntax highlighting keyword color and increases some control hit-area dimensions in CSS.
- Refines tablist ARIA placement and introduces a
<main>landmark for the primary content region. - Adds dynamic
aria-labelassignment for GFM task list checkboxes and removes MathJaxtabindex="0"on rendered containers.
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.
Show a summary per file
| File | Description |
|---|---|
| styles.css | Tweaks prettylights keyword color and increases a couple of control sizes. |
| script.js | Adds dynamic task checkbox labeling and post-processes MathJax output to remove tabindex. |
| index.html | Moves role="tablist" to the correct container and converts the content wrapper to <main>. |
| desktop-app/resources/styles.css | Mirrors the root CSS tweaks for the desktop bundle. |
| desktop-app/resources/js/script.js | Mirrors the root JS changes for the desktop bundle. |
| desktop-app/resources/index.html | Mirrors the root HTML a11y/landmark changes for the desktop bundle. |
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| // Add accessible dynamic labels to task list checkboxes matching their parent text | ||
| markdownPreview.querySelectorAll('input[type="checkbox"]').forEach(function(input) { | ||
| if (!input.hasAttribute('aria-label')) { | ||
| const parentText = input.parentElement ? input.parentElement.textContent.trim() : ''; | ||
| input.setAttribute('aria-label', parentText || 'Task item'); | ||
| } | ||
| }); |
Comment on lines
+1522
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| // Add accessible dynamic labels to task list checkboxes matching their parent text | ||
| markdownPreview.querySelectorAll('input[type="checkbox"]').forEach(function(input) { | ||
| if (!input.hasAttribute('aria-label')) { | ||
| const parentText = input.parentElement ? input.parentElement.textContent.trim() : ''; | ||
| input.setAttribute('aria-label', parentText || 'Task item'); | ||
| } | ||
| }); |
| <div class="editor-pane is-loading"> | ||
| <div id="line-numbers" class="line-numbers" aria-hidden="true"></div> | ||
| <div id="editor-highlight-layer" class="editor-highlight-layer" aria-hidden="true"></div> | ||
| <div id="editor-highlight-layer" class="editor-highlight-layer" aria-hidden="true" tabindex="-1"></div> |
| <div class="editor-pane is-loading"> | ||
| <div id="line-numbers" class="line-numbers" aria-hidden="true"></div> | ||
| <div id="editor-highlight-layer" class="editor-highlight-layer" aria-hidden="true"></div> | ||
| <div id="editor-highlight-layer" class="editor-highlight-layer" aria-hidden="true" tabindex="-1"></div> |
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Summary of Optimizations & Enhancements
This Pull Request bundles a comprehensive suite of performance optimizations, user experience (UX) enhancements, and accessibility (a11y) compliance improvements across the web application and the desktop app (
desktop-app/).Key Remediations & Updates
1. Performance Optimizations & Lazy Loading
_lastRenderedContent) to bypass full DOM rendering and script runs on redundant keystrokes.requestAnimationFramehooks.2. User Experience & Design Refinements
< 50ms).3. Accessibility (a11y) & WCAG Compliance
role="tablist"andaria-labelattributes to the child tab list container, ensuring strict ARIA compliance.<main>landmark to streamline assistive technology navigation.@media (prefers-reduced-motion: reduce)style configurations.Verification & Testing