MultiPickerController<T> class

A multi-selection controller.

This class is used to control the selection of a list of items.

It provides methods to select, deselect, toggle, and clear the selection.

It also provides a getter to retrieve the current selection.

The selection is compared using the provided isEquals function.

A typical usage of this class is to create an instance of it and pass it to a widget that needs to manage the selection of a list of items.

Inheritance

Constructors

MultiPickerController({required bool isEquals(T a, T b), List<T>? initialValue})
Creates a multi-selection controller.

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
initialValue → List<T>?
final
isEquals → bool Function(T a, T b)
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
values ↔ List<T>
Retrieves the current selection of the controller.
getter/setter pair

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
clear() → void
Clears the selection of the controller.
deselect(T item) → void
Deselects an item.
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
isSelected(T item) → bool
Checks if the given item is selected.
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
select(T item) → void
Selects an item.
toggle(T item) → void
Toggles the selection of an item.
toString() → String
A string representation of this object.
inherited

Operators

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