TGuard class

A conditional widget wrapper for permissions/access control.

TGuard provides conditional rendering with:

  • Hide or disable based on condition
  • Useful for permission-based UI
  • Simple boolean condition

Hide When False

TGuard(
  condition: user.canEdit,
  action: TGuardAction.hide,
  child: EditButton(),
)

Disable When False

TGuard(
  condition: user.canDelete,
  action: TGuardAction.disable,  // Default
  child: DeleteButton(),
)

See also:

Inheritance

Constructors

TGuard({Key? key, TGuardAction action = TGuardAction.disable, required bool condition, required Widget child})
Creates a guard widget.
const

Properties

action → TGuardAction
The action to take when condition is false.
final
child → Widget
The child widget to guard.
final
condition → bool
The condition to evaluate.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
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