CapabilityGate class

Shows child only when capability is available for the current user; otherwise renders fallback (an empty box by default).

Availability is computed from the permissions provided by the nearest PermissionScope, honouring the capability's required permissions and its prerequisite capabilities.

CapabilityGate(
  capability: manageTodos, // requires todoAdd+todoDelete AND viewTodos
  child: const Text('Full management enabled'),
);

🔒 This is a UI convenience, not a security boundary. Always keep your repository-level @Access guards — they are the real enforcement.

Inheritance

Constructors

CapabilityGate({Key? key, required Capability capability, required Widget child, Widget fallback = const SizedBox.shrink()})
const

Properties

capability → Capability
The capability required to render child.
final
child → Widget
The widget shown when the capability is available.
final
fallback → Widget
The widget shown when the capability is unavailable. Defaults to an empty (zero-size) widget, effectively hiding child.
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