EmojiPickerController class
Controller for EmojiPicker widget that allows reading and changing the selected category programmatically.
Similar to TextEditingController, this controller provides:
- Reading the current selected category
- Setting the category programmatically
- Listening to category changes
Example usage:
final controller = EmojiPickerController();
// Listen to changes
controller.addListener(() {
print('Category changed to: ${controller.currentCategory}');
});
// Set category programmatically
controller.setCategory(Category.SMILEYS);
// Use with EmojiPicker
EmojiPicker(
controller: controller,
// ... other config
)
- Inheritance
-
- Object
- ChangeNotifier
- EmojiPickerController
Constructors
- EmojiPickerController({Category initialCategory = Category.RECENT})
- Creates an EmojiPickerController with an optional initial category. Defaults to Category.RECENT if not specified.
Properties
- currentCategory → Category
-
The currently selected category.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
copyWith(
{Category? category}) → EmojiPickerController - Creates a copy of this controller with the same current category.
-
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
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
setCategory(
Category category) → void - Sets the selected category and notifies listeners.
-
toString(
) → String -
A string representation of this object.
override
-
updateCategory(
Category category) → void - Internal method used by EmojiPicker to update the controller when the user manually changes categories.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited