Request: Better accessibility support

[andrewleader]

Narration, keyboard navigation

Also need to consider

• Use of proper HTML tags and attributes (e.g anchor element for hyperlinks, alt on image etc)
• Support for ARIA attributes
• Support for high contrast mode
• Support for supplying high contrast images
• backgroundColor on Image elements (letting authors supply high contrast colors)
• Action.title should be a tooltip for selectActions where appropriate
• Elements/Input and need an "ariaLabel" attribute that gets passed along to each renderer

Related details:

• Tooltips on clipped TextBlock's (Automatic tooltip for TextBlock's that get clipped #1788)
• Hi-contrast remote images (High contrast and theme support for images and img background colors #1648)

Asks

• Action Center