[accessibility] Slider/range controls

[Malvoz]

The timecontrol-dateslider and timecontrol-speed sliders are not keyboard accessible and their corresponding output values are not announced by screen readers.

Considering using <input type="range"> (requires additional styling to reset browser defaults) or the ARIA equivalent: https://www.w3.org/WAI/ARIA/apg/patterns/slider/.

[Malvoz]

Other potentially helpful resources:

• Leaflet Guideline: Test your maps
• Leaflet Plugin Authoring Guide: Content Accessibility

[r1m]

Time slider also includes range limiting knobs : https://apps.socib.es/Leaflet.TimeDimension/examples/example3.html

[Malvoz]

@r1m There's also a Slider (Multi-Thumb) ARIA design pattern.