Added Enter and Space key handlers to 3 custom elements for full keyboard accessibility:
1. clipboard_copy.js:
- Added keydown listener for Enter/Space keys
- Set tabindex="0" and role="button" for keyboard focus
- Refactored click handler into reusable copyToClipboard function
- Keyboard users can now copy text without a mouse
2. download_button.js:
- Added keydown listener for Enter/Space keys
- Set tabindex="0" and role="button" for keyboard focus
- Keyboard users can now trigger file downloads
3. password_input.js:
- Added keydown listener to togglePasswordVisibility element
- Set tabindex="0" and role="button" on toggle button
- Properly cleanup event listener in disconnectedCallback
- Keyboard users can now toggle password visibility
All implementations:
- Use e.preventDefault() to prevent default Space key scrolling
- Check for existing tabindex/role attributes before setting
- Follow WCAG 2.1.1 (Keyboard, Level A) guidelines
- Support both Enter and Space keys per ARIA authoring practices
This satisfies WCAG 2.2 Success Criterion 2.1.1 (Keyboard, Level A).
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Marcelo Paiva