mosaic-core/dev.catbit.mosaic.core.data.schemas.tile.tiles.inputs/DropdownListTileSchema

DropdownListTileSchema

@Serializable

@SerialName(value = "DropdownList")

data class DropdownListTileSchema(val id: String, val events: SerializableImmutableList<EventSchema>?, val style: StyleSchema, val searchableTerms: SerializableImmutableList<String>?, val visibility: TileSchema.Visibility, val expanded: Boolean, val options: SerializableImmutableList<DropdownListTileSchema.SelectOption>, val selectedOptionId: String, val enabled: Boolean, val kind: DropdownListTileSchema.Kind, val supportingText: String?, val state: DropdownListTileSchema.State) : TileSchema

Renders a Material 3 ExposedDropdownMenuBox: a read-only anchor field showing the label of the currently selected option, plus a dropdown listing every entry in options. kind picks the anchor composable — Kind.FILLED → TextField, Kind.OUTLINED → OutlinedTextField — each with the matching ExposedDropdownMenuDefaults colors and the standard expand/collapse trailing icon. enabled and supportingText are forwarded, and state set to State.ERROR switches the field into Material's error styling.

Selection: the anchor displays the SelectOption.label of the option whose SelectOption.id equals selectedOptionId. Tapping an item dispatches a local DropdownListTileEvents.OnItemSelected, and the holder stores the new selectedOptionId and closes the menu — no round trip to the server. Toggling the anchor dispatches OnDropdownListToggle (holder flips expanded) and dismissing dispatches OnDropdownListDismissRequest (holder closes).

Triggers dispatched:

OnDropdownListOpenEventTrigger — when the anchor is tapped while closed.
OnDropdownListCloseEventTrigger — whenever the menu closes: when the anchor is tapped while open, when the menu is dismissed by tapping outside, and right after an item is picked.
OnDropdownListItemSelectedEventTrigger — when an item is picked, right before the close trigger above. The trigger carries the selected SelectOption.id, so events can be wired per option.

Value production: the holder exposes the current selectedOptionId under a caller-chosen key, so GetData / EvaluateData events can read this dropdown by its id.

Notes: when selectedOptionId matches none of the options the anchor renders empty; the menu itself still lists every option, so the user can recover by picking one.