Spheres (<kweb-spheres>) (optional)

Purpose

An alternative entry and navigation mode using time “spheres” or layers (centuries + gateway layer). This is a delightful, optional mode.

Inputs

Events listened to

• kweb:selection-changed
• kweb:hover-changed
• kweb:time-range-set, kweb:time-range-cleared

Data required

• time buckets, century spans
• mapping from bucket → node sets (or gateway nodes)

Outputs

Events emitted

• kweb:time-range-set (scrub/selection)
• kweb:navigate (when selecting a node in a layer)

UI and interactions

• Outer layer is Gateway, then 20th century, then 19th, etc (inverted scale).
• A time scale indicator lives under the sphere, so you always know “when you are”.
• A “time axis” or “spoke” can point into the sphere center (time origin metaphor).

Definition of done

• [ ] User can select a century layer.
• [ ] Selection updates the timeline and graph consistently.
• [ ] Time indicator clearly communicates current time context.