UIStateManager class
The Statemanager class provides a workflow for state based view management.
This class is the core component of the ui state workflow and manages the validation of conditions and transitions between states. If the class is initialized with use of the constructor, all states and transitions must be defined at once. It can additionally instantiated by using the helper class UIStateManagerFactory.
- Inheritance
-
- Object
- ChangeNotifier
- UIStateManager
Constructors
-
UIStateManager({required Set<
UIState> states, required Set<Transition> transitions}) - Creates an instance of UIStateManager.
-
UIStateManager.initialized({required Set<
UIState> states, required Set<Transition> transitions}) -
Creates an instance of UIStateManager and initializes it upon creation.
factory
-
UIStateManager.validated({required Set<
UIState> states, required Set<Transition> transitions}) -
Creates an instance of UIStateManager and validates it upon creation.
factory
Properties
- currentState → UIState?
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- isInitialized → bool
-
no setter
- isProcessingTriggers → bool
-
no setter
- isValid → bool
-
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
states
→ Set<
UIState> -
no setter
-
transitions
→ Set<
Transition> -
no setter
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
applyTriggers(
) → bool - Searches for a valid state by traversing available trigger transitions.
-
dispose(
) → void -
Discards any resources used by the object. After this is called, the
object is not in a usable state and should be discarded (calls to
addListener will throw after the object is disposed).
inherited
-
goTo(
String id) → void -
Tries to make a transition from the current state to the state specified
by
id. -
goToState(
UIState state) → void -
Tries to make a transition from the current state to the specified target
state. -
initialize(
) → void - Initiates this state manager.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
validate(
) → void - Validates the state manager and the associated data.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited