models/joyfill.file/FileField

FileField

interface FileField : FileComponent, Field

Field for attaching or referencing files.

Pairs the generic Field contract with FileComponent to enable users to upload, attach, or link external documents (PDFs, spreadsheets, etc.). Implementations may support previews, size/type restrictions, and multiple storage backends. File upload is to be handled by the host application using onUpload callback in Form.

Properties

abstract val disabled: Boolean

Whether this field is non-interactive (read-only/disabled) for the end user.

abstract val file: String

Implementation-specific backing identifier or path for file storage.

abstract val formulas: MutableList<FormularApplication>

Collection of formulas applied to this field. Order may determine execution precedence.

abstract var hidden: Boolean

Whether the element is hidden by default.

abstract var id: String

Stable identifier of this schema node.

abstract var identifier: String

Unique key that identifies this field within a document. Must be stable across updates.

initialHiddenState

abstract val initialHiddenState: Boolean

Whether the field starts hidden before any logic evaluation occurs.

abstract val logic: FieldLogic?

Optional FieldLogic describing visibility logic for the field

abstract val metadata: JoyMap

Arbitrary key-value map for custom extensions or analytics. Persisted alongside the field.

abstract val multi: Boolean

abstract var required: Boolean

Whether a value is mandatory for this schema.

abstract val tip: ToolTip?

Optional ToolTip to assists users with context, instructions, or hints.

abstract var title: String

Human-readable label used in editors or viewers.

abstract var type: Type

Discriminant describing the concrete schema/component kind.

abstract val value: Any?

Runtime value payload; variance is specialized by sub-interfaces.

Functions

abstract fun toJsonObject(): JsonObject

Serializes this instance to a structured JsonObject.

abstract fun toJsonString(): String

Serializes this instance to a compact JSON string.

abstract fun toMap(): MutableMap<String, Any?>

Converts this instance into a mutable key-value map suitable for mutation and re-serialization.