Navigation

[jakobmaier]

Allow the user to click on table cells / rows / columns to set them "active" and navigate between entities with the keyboard (skip invisible entities).
The active entity gets a special css-class to mark it.

There can only be one active entity per page (if the user clicks on an entity in two different tables, only the last one is set active).

Provide event handlers for the user (onNavigateTo(), onNavibateFrom(), ...) for each table.

The navigation needs to be activated and deactivated manually.

If the table is modified (remove / new / hide entity, connect/disconnect multicells), and the active entity is affected, the entity needs to be deactivated.