Declares an item of a list a host screen shows, with only what an item has:
its id — a literal of its own, not a ScreenId — the schema of one list
entry (input), its data and state, its enter and its actions.
The engine runs the item's enter when the host shows it — the item's own
requests, an impression, a thread's preview — under the host's frame, one
item after another, after the host's burst; it emits no navigation. An item
is not a screen: it is in no screen set and no trail (only its identity key
is, when an edge is taken from it), and it has no lists of its own. Several
item definitions share actions, state or enter as plain values (a factory
spread into actions); a nested list of an entry (a carousel's slides) is
data, and the actions over it take an index.
Declares an item of a list a host screen shows, with only what an item has: its id — a literal of its own, not a
ScreenId— the schema of one list entry (input), its data and state, itsenterand its actions.The engine runs the item's
enterwhen the host shows it — the item's own requests, an impression, a thread's preview — under the host's frame, one item after another, after the host's burst; it emits no navigation. An item is not a screen: it is in no screen set and no trail (only its identity key is, when an edge is taken from it), and it has no lists of its own. Several item definitions share actions, state orenteras plain values (a factory spread intoactions); a nested list of an entry (a carousel's slides) is data, and the actions over it take an index.