CompositeAccessGate class final

A flexible access gate that evaluates a list of conditions and displays widgets based on the evaluation strategy defined by variant.

Supports both sync and async conditions. Conditions can be evaluated using:

  • CompositeAccessGate (default: all)
  • CompositeAccessGate.any
  • CompositeAccessGate.none
  • CompositeAccessGate.atLeast
  • CompositeAccessGate.builder for full custom rendering

Example

CompositeAccessGate.any(
  conditions: [
    (ctx) => user.hasRole('admin'),
    (ctx) => user.hasPermission('view'),
  ],
  child: Text('Access granted'),
  fallback: Text('Access denied'),
)

Supports onAllow, onDeny, onError callbacks, a debug mode, and async loading state.

Inheritance

Constructors

CompositeAccessGate.new({required List<AccessCondition> conditions, required Widget child, Widget? fallback, Widget? loading, bool debug = false, void onAllow()?, void onDeny()?, void onError(Object error)?, Key? key})
Default constructor: all conditions must return true.
const
CompositeAccessGate.any({required List<AccessCondition> conditions, required Widget child, Widget? fallback, Widget? loading, bool debug = false, void onAllow()?, void onDeny()?, void onError(Object error)?, Key? key})
Requires at least one condition to return true.
const
CompositeAccessGate.atLeast({required List<AccessCondition> conditions, required int? atLeastCount, required Widget child, Widget? fallback, Widget? loading, bool debug = false, void onAllow()?, void onDeny()?, void onError(Object error)?, Key? key})
Requires at least atLeastCount conditions to return true.
const
CompositeAccessGate.builder({required List<AccessCondition> conditions, required AccessGateBuilder? builder, Widget? loading, bool debug = false, void onAllow()?, void onDeny()?, void onError(Object error)?, CompositeVariant variant = CompositeVariant.all, int? atLeastCount, Key? key})
Custom builder constructor. Allows full control over rendering based on access result.
const
CompositeAccessGate.none({required List<AccessCondition> conditions, required Widget child, Widget? fallback, Widget? loading, bool debug = false, void onAllow()?, void onDeny()?, void onError(Object error)?, Key? key})
Requires all conditions to return false.
const

Properties

atLeastCount → int?
Used with CompositeVariant.atLeast to define how many true conditions are required.
final
builder → AccessGateBuilder?
A custom builder that receives the final access decision.
final
child → Widget?
Widget to render if access is granted.
final
conditions → List<AccessCondition>
List of conditions to evaluate. Can be synchronous or asynchronous.
final
debug → bool
Enables debug logging of evaluation steps.
final
fallback → Widget?
Widget to render if access is denied.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
loading → Widget?
Widget to render while async conditions are still being evaluated.
final
onAllow → void Function()?
Called once if access is granted.
final
onDeny → void Function()?
Called once if access is denied.
final
onError → void Function(Object error)?
Called if any condition throws an error.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
variant → CompositeVariant
Evaluation strategy: all/any/none/atLeast
final

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