Initial commit
This commit is contained in:
Zhongwei Li
14
.claude-plugin/plugin.json
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14
.claude-plugin/plugin.json
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{
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"name": "accessibility-design",
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"description": "Accessibility and inclusive design patterns following WCAG 2.2 and ARIA best practices",
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"version": "1.0.0",
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"author": {
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"name": "Brock"
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},
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"agents": [
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"./agents"
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],
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"commands": [
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"./commands"
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]
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}
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3
README.md
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3
README.md
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# accessibility-design
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Accessibility and inclusive design patterns following WCAG 2.2 and ARIA best practices
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95
agents/a11y-specialist.md
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95
agents/a11y-specialist.md
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# Accessibility Specialist Agent
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You are an autonomous agent specialized in implementing accessibility features and inclusive design following WCAG 2.2 guidelines.
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## Your Mission
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Make applications accessible to all users, including those using assistive technologies, by implementing WCAG 2.2 AA/AAA standards.
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## Core Responsibilities
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### 1. Audit Accessibility
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- Run automated tests (axe, Lighthouse)
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- Manual keyboard navigation testing
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- Screen reader testing
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- Color contrast analysis
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- Identify WCAG violations
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### 2. Implement Semantic HTML
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```html
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<header>
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<nav aria-label="Main">
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<ul><li><a href="/">Home</a></li></ul>
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</nav>
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</header>
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<main>
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<article>
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<h1>Title</h1>
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</article>
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</main>
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```
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### 3. Add ARIA Attributes
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```html
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<button
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aria-haspopup="true"
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aria-expanded="false"
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aria-controls="menu"
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>
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Menu
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</button>
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<div
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id="menu"
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role="menu"
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aria-label="Options"
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>
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<button role="menuitem">Option 1</button>
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</div>
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```
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### 4. Implement Keyboard Navigation
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- All interactive elements accessible via Tab
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- Arrow keys for menus/lists
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- Escape to close modals/dropdowns
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- Enter/Space to activate
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- Focus management
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### 5. Ensure Color Contrast
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- 4.5:1 minimum for normal text (AA)
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- 3:1 for large text (AA)
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- 7:1 for enhanced contrast (AAA)
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- Don't rely on color alone
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### 6. Add Alternative Text
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```html
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<img src="chart.png" alt="Sales increased 25% in Q4" />
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<img src="decorative.png" alt="" role="presentation" />
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```
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### 7. Test with Assistive Tech
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- Screen readers (NVDA, JAWS, VoiceOver)
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- Keyboard only
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- Voice control
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- Screen magnification
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## Best Practices
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- Use semantic HTML
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- Provide text alternatives
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- Ensure keyboard access
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- Maintain color contrast
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- Logical heading structure
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- Proper form labels
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- Visible focus indicators
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- Support screen readers
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- Test thoroughly
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## Deliverables
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1. Accessibility audit report
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2. WCAG compliant implementation
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3. ARIA annotations
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4. Keyboard navigation
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5. Testing documentation
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6. Remediation plan
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542
commands/a11y-patterns.md
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542
commands/a11y-patterns.md
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# Accessibility & Inclusive Design Patterns
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Comprehensive accessibility patterns following WCAG 2.2 guidelines and ARIA best practices.
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## WCAG 2.2 Principles (POUR)
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### Perceivable
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Information and UI components must be presentable to users in ways they can perceive.
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### Operable
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UI components and navigation must be operable.
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### Understandable
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Information and operation of UI must be understandable.
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### Robust
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Content must be robust enough to be interpreted by various user agents, including assistive technologies.
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## Semantic HTML
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```html
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<!-- Good: Semantic structure -->
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<header>
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<nav aria-label="Main navigation">
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<ul>
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<li><a href="/">Home</a></li>
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<li><a href="/about">About</a></li>
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</ul>
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</nav>
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</header>
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<main>
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<article>
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<h1>Page Title</h1>
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<p>Content...</p>
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</article>
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<aside aria-label="Related content">
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<h2>Related Articles</h2>
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</aside>
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</main>
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<footer>
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<p>© 2024 Company Name</p>
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</footer>
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<!-- Bad: Non-semantic -->
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<div class="header">
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<div class="nav">
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<div class="link">Home</div>
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</div>
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</div>
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```
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## ARIA Attributes
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### Landmarks
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```html
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<nav aria-label="Primary navigation">
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<main role="main">
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<aside aria-label="Sidebar">
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<footer role="contentinfo">
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```
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### Live Regions
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```html
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<!-- Announce changes immediately -->
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<div role="alert" aria-live="assertive">
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Error: Please correct the form errors.
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</div>
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<!-- Announce when convenient -->
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<div aria-live="polite" aria-atomic="true">
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5 new messages
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</div>
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<!-- Status messages -->
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<div role="status" aria-live="polite">
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Item added to cart
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</div>
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```
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### Form Accessibility
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```html
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<!-- Proper labeling -->
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<label for="email">Email Address</label>
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<input
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type="email"
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id="email"
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name="email"
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required
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aria-required="true"
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aria-describedby="email-error email-help"
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/>
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<span id="email-help">We'll never share your email</span>
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<span id="email-error" role="alert" aria-live="polite">
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<!-- Error message appears here -->
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</span>
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<!-- Grouped inputs -->
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<fieldset>
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<legend>Contact Preferences</legend>
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<div>
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<input type="checkbox" id="email-pref" name="contact" value="email" />
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<label for="email-pref">Email</label>
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</div>
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<div>
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<input type="checkbox" id="phone-pref" name="contact" value="phone" />
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<label for="phone-pref">Phone</label>
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</div>
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</fieldset>
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<!-- Radio groups -->
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<fieldset>
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<legend>Subscription Type</legend>
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<div>
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<input type="radio" id="free" name="subscription" value="free" checked />
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<label for="free">Free</label>
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</div>
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<div>
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<input type="radio" id="premium" name="subscription" value="premium" />
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<label for="premium">Premium</label>
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</div>
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</fieldset>
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```
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## Keyboard Navigation
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```typescript
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// React component with keyboard support
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function DropdownMenu({ items }) {
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const [isOpen, setIsOpen] = useState(false);
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const [focusedIndex, setFocusedIndex] = useState(0);
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const buttonRef = useRef<HTMLButtonElement>(null);
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const menuRef = useRef<HTMLDivElement>(null);
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const handleKeyDown = (e: KeyboardEvent) => {
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switch (e.key) {
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case 'Enter':
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case ' ':
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e.preventDefault();
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setIsOpen(!isOpen);
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break;
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case 'Escape':
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setIsOpen(false);
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buttonRef.current?.focus();
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break;
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case 'ArrowDown':
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e.preventDefault();
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if (!isOpen) {
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setIsOpen(true);
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} else {
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setFocusedIndex((prev) => (prev + 1) % items.length);
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}
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break;
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case 'ArrowUp':
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e.preventDefault();
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if (isOpen) {
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setFocusedIndex((prev) => (prev - 1 + items.length) % items.length);
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}
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break;
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case 'Home':
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e.preventDefault();
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setFocusedIndex(0);
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break;
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case 'End':
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e.preventDefault();
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setFocusedIndex(items.length - 1);
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break;
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}
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};
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return (
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<div onKeyDown={handleKeyDown}>
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<button
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ref={buttonRef}
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aria-haspopup="true"
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aria-expanded={isOpen}
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onClick={() => setIsOpen(!isOpen)}
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>
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Menu
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</button>
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{isOpen && (
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<div
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ref={menuRef}
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role="menu"
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aria-orientation="vertical"
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>
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{items.map((item, index) => (
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<button
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key={item.id}
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role="menuitem"
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tabIndex={index === focusedIndex ? 0 : -1}
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onClick={() => item.onClick()}
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>
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{item.label}
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</button>
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))}
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</div>
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)}
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</div>
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);
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}
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```
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## Focus Management
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```typescript
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// Trap focus in modal
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function Modal({ isOpen, onClose, children }) {
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const modalRef = useRef<HTMLDivElement>(null);
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useEffect(() => {
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if (!isOpen) return;
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const modal = modalRef.current;
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if (!modal) return;
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const focusableElements = modal.querySelectorAll(
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'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
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);
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const firstElement = focusableElements[0] as HTMLElement;
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const lastElement = focusableElements[focusableElements.length - 1] as HTMLElement;
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// Focus first element
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firstElement?.focus();
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const handleTabKey = (e: KeyboardEvent) => {
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if (e.key !== 'Tab') return;
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if (e.shiftKey) {
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// Shift + Tab
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if (document.activeElement === firstElement) {
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e.preventDefault();
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lastElement?.focus();
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}
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} else {
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// Tab
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if (document.activeElement === lastElement) {
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e.preventDefault();
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firstElement?.focus();
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}
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}
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};
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modal.addEventListener('keydown', handleTabKey);
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return () => {
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modal.removeEventListener('keydown', handleTabKey);
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};
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}, [isOpen]);
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if (!isOpen) return null;
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return (
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<div
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ref={modalRef}
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role="dialog"
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aria-modal="true"
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aria-labelledby="modal-title"
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>
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<h2 id="modal-title">Modal Title</h2>
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{children}
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<button onClick={onClose}>Close</button>
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</div>
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);
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}
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```
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## Color Contrast
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```css
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/* WCAG AA requires 4.5:1 for normal text, 3:1 for large text */
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/* WCAG AAA requires 7:1 for normal text, 4.5:1 for large text */
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.button-primary {
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/* Good contrast: 7.2:1 */
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background: #0066cc;
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color: #ffffff;
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}
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.button-secondary {
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/* Good contrast: 4.6:1 */
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background: #f0f0f0;
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color: #333333;
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}
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/* Don't rely on color alone */
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.error {
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color: #cc0000;
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}
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.error::before {
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content: '⚠ '; /* Visual indicator */
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}
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|
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.error[aria-invalid="true"] {
|
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/* Also announced to screen readers */
|
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}
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```
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## Skip Links
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```html
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<a href="#main-content" class="skip-link">
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Skip to main content
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</a>
|
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|
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<style>
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.skip-link {
|
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position: absolute;
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top: -40px;
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left: 0;
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background: #000;
|
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color: #fff;
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padding: 8px;
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z-index: 100;
|
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}
|
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|
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.skip-link:focus {
|
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top: 0;
|
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}
|
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</style>
|
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```
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|
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## Images and Alt Text
|
||||
|
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```html
|
||||
<!-- Informative image -->
|
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<img src="chart.png" alt="Sales increased by 25% in Q4 2024" />
|
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|
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<!-- Decorative image -->
|
||||
<img src="decorative.png" alt="" role="presentation" />
|
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|
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<!-- Complex image -->
|
||||
<figure>
|
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<img src="complex-chart.png" alt="Detailed sales data" />
|
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<figcaption>
|
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<details>
|
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<summary>Chart description</summary>
|
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<p>Detailed text description of the chart data...</p>
|
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</details>
|
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</figcaption>
|
||||
</figure>
|
||||
|
||||
<!-- Icon with text -->
|
||||
<button>
|
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<svg aria-hidden="true"><path d="..." /></svg>
|
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<span>Delete</span>
|
||||
</button>
|
||||
|
||||
<!-- Icon without text -->
|
||||
<button aria-label="Delete item">
|
||||
<svg aria-hidden="true"><path d="..." /></svg>
|
||||
</button>
|
||||
```
|
||||
|
||||
## Screen Reader-Only Content
|
||||
|
||||
```css
|
||||
.sr-only {
|
||||
position: absolute;
|
||||
width: 1px;
|
||||
height: 1px;
|
||||
padding: 0;
|
||||
margin: -1px;
|
||||
overflow: hidden;
|
||||
clip: rect(0, 0, 0, 0);
|
||||
white-space: nowrap;
|
||||
border-width: 0;
|
||||
}
|
||||
|
||||
.sr-only-focusable:focus {
|
||||
position: static;
|
||||
width: auto;
|
||||
height: auto;
|
||||
overflow: visible;
|
||||
clip: auto;
|
||||
white-space: normal;
|
||||
}
|
||||
```
|
||||
|
||||
```html
|
||||
<button>
|
||||
<svg aria-hidden="true">...</svg>
|
||||
<span class="sr-only">Settings</span>
|
||||
</button>
|
||||
```
|
||||
|
||||
## Responsive and Touch-Friendly
|
||||
|
||||
```css
|
||||
/* Minimum touch target size: 44x44px */
|
||||
button,
|
||||
a {
|
||||
min-height: 44px;
|
||||
min-width: 44px;
|
||||
padding: 12px 24px;
|
||||
}
|
||||
|
||||
/* Ensure adequate spacing */
|
||||
.button-group button {
|
||||
margin: 4px;
|
||||
}
|
||||
```
|
||||
|
||||
## Headings Hierarchy
|
||||
|
||||
```html
|
||||
<!-- Good: Logical hierarchy -->
|
||||
<h1>Page Title</h1>
|
||||
<h2>Section 1</h2>
|
||||
<h3>Subsection 1.1</h3>
|
||||
<h3>Subsection 1.2</h3>
|
||||
<h2>Section 2</h2>
|
||||
|
||||
<!-- Bad: Skipped levels -->
|
||||
<h1>Page Title</h1>
|
||||
<h3>Section</h3> <!-- Skipped h2 -->
|
||||
```
|
||||
|
||||
## Tables
|
||||
|
||||
```html
|
||||
<table>
|
||||
<caption>Monthly Sales Report</caption>
|
||||
<thead>
|
||||
<tr>
|
||||
<th scope="col">Month</th>
|
||||
<th scope="col">Sales</th>
|
||||
<th scope="col">Growth</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<th scope="row">January</th>
|
||||
<td>$10,000</td>
|
||||
<td>+5%</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
```
|
||||
|
||||
## Loading States
|
||||
|
||||
```typescript
|
||||
function DataList() {
|
||||
const { data, isLoading } = useQuery('data');
|
||||
|
||||
if (isLoading) {
|
||||
return (
|
||||
<div role="status" aria-live="polite" aria-busy="true">
|
||||
<span className="sr-only">Loading data...</span>
|
||||
<Spinner aria-hidden="true" />
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
return (
|
||||
<div role="region" aria-label="Data list">
|
||||
{data.map(item => <Item key={item.id} {...item} />)}
|
||||
</div>
|
||||
);
|
||||
}
|
||||
```
|
||||
|
||||
## Testing Accessibility
|
||||
|
||||
### Automated Testing
|
||||
```typescript
|
||||
import { axe, toHaveNoViolations } from 'jest-axe';
|
||||
|
||||
expect.extend(toHaveNoViolations);
|
||||
|
||||
test('page has no accessibility violations', async () => {
|
||||
const { container } = render(<App />);
|
||||
const results = await axe(container);
|
||||
expect(results).toHaveNoViolations();
|
||||
});
|
||||
```
|
||||
|
||||
### Manual Testing Checklist
|
||||
- [ ] Keyboard navigation works
|
||||
- [ ] Screen reader announces correctly
|
||||
- [ ] Color contrast meets WCAG AA
|
||||
- [ ] Forms have proper labels
|
||||
- [ ] Images have alt text
|
||||
- [ ] Headings are hierarchical
|
||||
- [ ] Focus indicators are visible
|
||||
- [ ] Touch targets are adequate
|
||||
- [ ] No color-only information
|
||||
- [ ] Text can be resized to 200%
|
||||
|
||||
## Reduced Motion
|
||||
|
||||
```css
|
||||
@media (prefers-reduced-motion: reduce) {
|
||||
*,
|
||||
*::before,
|
||||
*::after {
|
||||
animation-duration: 0.01ms !important;
|
||||
animation-iteration-count: 1 !important;
|
||||
transition-duration: 0.01ms !important;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
```typescript
|
||||
function AnimatedComponent() {
|
||||
const prefersReducedMotion = useMediaQuery('(prefers-reduced-motion: reduce)');
|
||||
|
||||
return (
|
||||
<motion.div
|
||||
animate={{ opacity: 1 }}
|
||||
transition={{ duration: prefersReducedMotion ? 0 : 0.3 }}
|
||||
>
|
||||
Content
|
||||
</motion.div>
|
||||
);
|
||||
}
|
||||
```
|
||||
|
||||
## Best Practices
|
||||
|
||||
1. **Use semantic HTML**
|
||||
2. **Provide text alternatives**
|
||||
3. **Ensure keyboard accessibility**
|
||||
4. **Maintain sufficient color contrast**
|
||||
5. **Create logical heading structure**
|
||||
6. **Label form inputs properly**
|
||||
7. **Make focus indicators visible**
|
||||
8. **Support screen readers**
|
||||
9. **Test with real assistive technologies**
|
||||
10. **Follow WCAG 2.2 guidelines**
|
||||
49
plugin.lock.json
Normal file
49
plugin.lock.json
Normal file
@@ -0,0 +1,49 @@
|
||||
{
|
||||
"$schema": "internal://schemas/plugin.lock.v1.json",
|
||||
"pluginId": "gh:Dieshen/claude_marketplace:plugins/accessibility-design",
|
||||
"normalized": {
|
||||
"repo": null,
|
||||
"ref": "refs/tags/v20251128.0",
|
||||
"commit": "59a790231bd3248131fc8735a376a95803384969",
|
||||
"treeHash": "d7b7f73e436ef8af7b8df1299a323dc1ca76fa5edd653133bb825629ad4367e7",
|
||||
"generatedAt": "2025-11-28T10:10:24.637350Z",
|
||||
"toolVersion": "publish_plugins.py@0.2.0"
|
||||
},
|
||||
"origin": {
|
||||
"remote": "git@github.com:zhongweili/42plugin-data.git",
|
||||
"branch": "master",
|
||||
"commit": "aa1497ed0949fd50e99e70d6324a29c5b34f9390",
|
||||
"repoRoot": "/Users/zhongweili/projects/openmind/42plugin-data"
|
||||
},
|
||||
"manifest": {
|
||||
"name": "accessibility-design",
|
||||
"description": "Accessibility and inclusive design patterns following WCAG 2.2 and ARIA best practices",
|
||||
"version": "1.0.0"
|
||||
},
|
||||
"content": {
|
||||
"files": [
|
||||
{
|
||||
"path": "README.md",
|
||||
"sha256": "f3460be179d27f5dc51986dacd6d8b1a71a2a11b667dd484b0eede3d0fcee0bb"
|
||||
},
|
||||
{
|
||||
"path": "agents/a11y-specialist.md",
|
||||
"sha256": "ac9271aeae54c1d4ce843733bedbd1b9aae6d51f81f427bbd049716706d80af5"
|
||||
},
|
||||
{
|
||||
"path": ".claude-plugin/plugin.json",
|
||||
"sha256": "1c2d6d6a981e899a1f1b9f61d91334711480d49e7a5b7ba8bfdc8bde60cfc3d9"
|
||||
},
|
||||
{
|
||||
"path": "commands/a11y-patterns.md",
|
||||
"sha256": "d18058d0271a3c6f4012fd692815c1fcba5736bd478f4b0652a078d208c16cc2"
|
||||
}
|
||||
],
|
||||
"dirSha256": "d7b7f73e436ef8af7b8df1299a323dc1ca76fa5edd653133bb825629ad4367e7"
|
||||
},
|
||||
"security": {
|
||||
"scannedAt": null,
|
||||
"scannerVersion": null,
|
||||
"flags": []
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user