BeamerBackButtonDispatcher class
Overrides default back button behavior in RootBackButtonDispatcher to do custom onBack or BeamerDelegate.beamBack.
- Inheritance
-
- Object
- BackButtonDispatcher
- RootBackButtonDispatcher
- BeamerBackButtonDispatcher
Constructors
-
BeamerBackButtonDispatcher({required BeamerDelegate delegate, Future<
bool> onBack(BeamerDelegate delegate)?, bool alwaysBeamBack = false, bool fallbackToBeamBack = true}) - Creates a BeamerBackButtonDispatcher with specified properties.
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
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
addCallback(
ValueGetter< Future< callback) → voidbool> > -
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
-
didChangeAccessibilityFeatures(
) → void -
Called when the system changes the set of currently active accessibility
features.
inherited
-
didChangeAppLifecycleState(
AppLifecycleState state) → void -
Called when the system puts the app in the background or returns
the app to the foreground.
inherited
-
didChangeLocales(
List< Locale> ? locales) → void -
Called when the system tells the app that the user's locale has
changed. For example, if the user changes the system language
settings.
inherited
-
didChangeMetrics(
) → void -
Called when the application's dimensions change. For example,
when a phone is rotated.
inherited
-
didChangePlatformBrightness(
) → void -
Called when the platform brightness changes.
inherited
-
didChangeTextScaleFactor(
) → void -
Called when the platform's text scale factor changes.
inherited
-
didHaveMemoryPressure(
) → void -
Called when the system is running low on memory.
inherited
-
didPopRoute(
) → Future< bool> -
Called when the system tells the app to pop the current route, such as
after a system back button press or back gesture.
inherited
-
didPushRoute(
String route) → Future< bool> -
Called when the host tells the application to push a new route onto the
navigator.
inherited
-
didPushRouteInformation(
RouteInformation routeInformation) → Future< bool> -
Called when the host tells the application to push a new
RouteInformation and a restoration state onto the router.
inherited
-
didRequestAppExit(
) → Future< AppExitResponse> -
Called when a request is received from the system to exit the application.
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
-
removeCallback(
ValueGetter< Future< callback) → voidbool> > -
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited