HistoryStore<S> class

A store that captures the history and enables undo and redo operations.

Implemented types

Available extensions

Constructors

HistoryStore(Store<S> delegate, {Predicate1<S>? filter, int? limit}): Constructs a history store.

canRedo → bool: Tests if the last action can be redone.
no setter
canUndo → bool: Tests if the last change to the store can be undone.
no setter
delegate → Store<S>: The store that manages the current state.
final
filter → Predicate1<S>?: An (optional) filter predicate to exclude certain states from the history.
final
future → List<S>: Read-only accessor to the future history states.
no setter
hashCode → int: The hash code for this object.
no setterinherited
limit → int?: An (optional) limit of history states to remember.
final
past → List<S>: Read-only accessor to the past history states.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
state → S: Returns the current state.
no setteroverride

clear() → void: Clears the undo/redo history.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
redo() → S: Redoes the last change to the store.
subscribe(Observer<S> observer) → Disposable: Subscribes with the provided observer.
override
toString() → String: A string representation of this object.
inherited
undo() → S: Undoes the last change to the store.
update(Updater<S> updater) → S: Updates the current state.
override