TFilePicker class

A file picker input with preview and validation.

TFilePicker provides file selection with:

  • Single or multiple file selection
  • File type filtering
  • Extension filtering
  • File preview with thumbnails
  • Remove file capability
  • Validation support

Basic Usage

TFilePicker(
  label: 'Upload Files',
  allowMultiple: true,
  onValueChanged: (files) => print('Selected: ${files?.length} files'),
)

With File Type Filter

TFilePicker(
  label: 'Upload Images',
  fileType: TFileType.image,
  allowMultiple: true,
)

With Extension Filter

TFilePicker(
  label: 'Upload Documents',
  fileType: TFileType.custom,
  allowedExtensions: ['pdf', 'doc', 'docx'],
)

See also:

Inheritance
Mixed-in types

Constructors

TFilePicker({Key? key, String? label, String? tag, String? helperText, bool isRequired = false, bool disabled = false, TFilePickerTheme? theme, VoidCallback? onTap, FocusNode? focusNode, List<TFile>? value, ValueNotifier<List<TFile>?>? valueNotifier, ValueChanged<List<TFile>?>? onValueChanged, List<String? Function(List<TFile>?)>? rules, Duration? validationDebounce, String? placeholder, bool autoFocus = false, bool allowMultiple = false, List<String>? allowedExtensions, TFileType fileType = TFileType.any})
Creates a file picker.
const

Properties

allowedExtensions → List<String>?
Allowed file extensions (without dots).
final
allowMultiple → bool
Whether to allow multiple file selection.
final
autoFocus → bool
Whether to auto-focus the picker.
final
disabled → bool
Whether the field is disabled.
final
fileType → TFileType
The type of files to allow.
final
focusNode → FocusNode?
Custom focus node.
final
hashCode → int
The hash code for this object.
no setterinherited
helperText → String?
The helper text.
final
isRequired → bool
Whether the field is required.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → String?
The label text.
final
onTap → VoidCallback?
Callback for tap events.
final
onValueChanged → ValueChanged<List<TFile>?>?
Callback fired when the value changes.
final
placeholder → String?
Placeholder text when no files are selected.
final
rules → List<String? Function(List<TFile>?)>?
List of validation rules.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tag → String?
The tag text (optional).
final
theme → TFilePickerTheme?
Custom theme.
final
validationDebounce → Duration?
Debounce duration for validation trigger.
final
value → List<TFile>?
The initial value.
final
valueNotifier → ValueNotifier<List<TFile>?>?
A ValueNotifier for two-way binding.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<TFilePicker>
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
validateValue(List<TFile>? value) → List<String>
Validates the given value against the rules.
inherited

Operators

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