BeamerChildBackButtonDispatcher class

Overrides default back button behavior in ChildBackButtonDispatcher to do custom onBack or BeamerDelegate.beamBack.

Inheritance

Constructors

BeamerChildBackButtonDispatcher({required BeamerBackButtonDispatcher parent, required BeamerDelegate delegate, Future<bool> onBack(BeamerDelegate delegate)?}): Creates a BeamerChildBackButtonDispatcher with specified properties.

alwaysBeamBack → bool: Whether to always do BeamerDelegate.beamBack when Android back button is pressed, i.e. always go to previous route in navigation history instead of trying to pop first.
final
delegate → BeamerDelegate: A BeamerDelegate that belongs to the same Router/Beamer as this.
final
fallbackToBeamBack → bool: Whether to try to use beamBack() when pop cannot be done.
final
hasCallbacks → bool: Whether a callback is currently registered.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
onBack → (Future<bool> Function(BeamerDelegate delegate)?): A custom closure that has precedence over other behaviors.
final
parent → BackButtonDispatcher: The back button dispatcher that this object will attempt to take priority over when takePriority is called.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

addCallback(ValueGetter<Future<bool>> callback) → void: Register the callback to be called when the object changes.
inherited
createChildBackButtonDispatcher() → ChildBackButtonDispatcher: Creates a ChildBackButtonDispatcher that is a direct descendant of this back button dispatcher.
inherited
deferTo(ChildBackButtonDispatcher child) → void: Mark the given child as taking priority over this object and the other children.
inherited
forget(ChildBackButtonDispatcher child) → void: Causes the given child to be removed from the list of children to which this object might defer, as if deferTo had never been called for that child.
inherited
invokeCallback(Future<bool> defaultValue) → Future<bool>: Handles a pop route request.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifiedByParent(Future<bool> defaultValue) → Future<bool>: The parent of this child back button dispatcher decide to let this child to handle the invoke the callback request in BackButtonDispatcher.invokeCallback.
inherited
removeCallback(ValueGetter<Future<bool>> callback) → void: Remove a previously registered callback.
inherited
takePriority() → void: Make this BackButtonDispatcher take priority among its peers.
inherited
toString() → String: A string representation of this object.
inherited