ChipInputController<T> class

Reactive controller for managing chip input state with convenient methods.

Extends ValueNotifier to provide state management for chip input widgets containing lists of typed objects. Supports adding, removing, and clearing chips programmatically while notifying listeners of changes.

The controller maintains a list of items of type T and provides methods for common list operations in chip input contexts.

Example:

final controller = ChipInputController<String>(['initial', 'chips']);

// React to changes
controller.addListener(() {
  print('Chips: ${controller.value}');
});

// Programmatic control
controller.add('new chip');
controller.removeAt(0);
Inheritance
Mixed-in types

Constructors

ChipInputController.new([List<T> value = const []])
Creates a ChipInputController with an optional initial list of chips.

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
isEmpty → bool
Returns true if the chip input is empty.
no setter
isNotEmpty → bool
Returns true if the chip input contains at least one chip.
no setter
length → int
Returns the number of chips currently in the input.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value ↔ List<T>
The current value stored in this notifier.
getter/setter pairinherited

Methods

add(T chip) → void
Adds a new chip to the end of the current list.
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
clear() → void
Removes all chips from the input.
contains(T chip) → bool
Returns true if the chip list contains the specified chip.
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
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
remove(T chip) → void
Removes all chips matching the provided chip.
removeAt(int index) → void
Removes the chip at the specified index.
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

Operators

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