PrioritizedAction class

An Action that iterates through a list of Intents, invoking the first that is enabled.

The isEnabled method must be called before invoke. Calling isEnabled configures the object by seeking the first intent with an enabled action. If the actions have an opportunity to change enabled state, isEnabled must be called again before calling invoke.

Inheritance

Constructors

PrioritizedAction()

Properties

callingAction → Action<PrioritizedIntents>?
The Action overridden by this Action.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
intentType → Type
Gets the type of intent this action responds to.
no setterinherited
isActionEnabled → bool
Whether this Action is inherently enabled.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

addActionListener(ActionListenerCallback listener) → void
Register a callback to listen for changes to the state of this action.
inherited
consumesKey(PrioritizedIntents intent) → bool
Indicates whether this action should treat key events mapped to this action as being "handled" when it is invoked via the key event.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
invoke(PrioritizedIntents intent, [BuildContext? context]) → void
Called when the action is to be performed.
override
isEnabled(PrioritizedIntents intent, [BuildContext? context]) → bool
Returns true if the action is enabled and is ready to be invoked.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyActionListeners() → void
Call all the registered listeners.
inherited
removeActionListener(ActionListenerCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
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
toKeyEventResult(PrioritizedIntents intent, covariant Object? invokeResult) → KeyEventResult
Converts the result of invoke of this action to a KeyEventResult.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

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