FileFieldWidget class

file. Never directly typed into — state.value is always a stored path (or, when FileComponent.multiple, a list of them), never free text — so the display control is permanently read-only. The choose control is separate: a choose/replace button (single) or an add button beside the stored list (multiple), shown only when every one of these holds, same "hard gate" rule the file atop this list documents for every other field — state.enabled == false disables the real control, not just its colours:

  • the server left this field writable (!component.readOnly);
  • state.enabled — a disabled() closure or a disabled ancestor container is not a file-specific concern, but it gates this control the same as every other one;
  • the host supplied a picker (state.filePicker).

A readOnly: true component shows FilamentStrings.fileFieldReadOnly and stays inert even with a picker supplied — the server's word always wins. Otherwise missing a picker shows FilamentStrings.filePickerUnavailable instead — never a control that cannot work, the same principle FilamentStrings.chartUnavailable follows for a missing chart renderer. A merely-disabled-but-otherwise-workable field shows neither note, same as every other disabled field type: it looks inert, it does not claim a reason that isn't true.

The multiple variant renders one row per stored path (basename only) with a per-item remove, and its add button stops being offered at FileComponent.maxFiles — a hint, never a block: the server's write-time array max is the rule. Each pick uploads through the unchanged one-file-per-request endpoint, so a multiple field's list grows one appended path per upload call.

Inheritance

Constructors

FileFieldWidget({required FileComponent component, required FieldState state, MediaSet? media, Key? key})
const

Properties

component → FileComponent
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
media → MediaSet?
The record's resolved media for this field — null on create, and null for a field the record carries no '<name>.__media' sibling for. A stored value matching one of these items by uuid displays that item's name and thumbnail instead of the raw token; see _displayName.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
state → FieldState
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<FileFieldWidget>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited