BaseDropdownProvider<T> class abstract

Abstract base class to manage the state and behavior of a dropdown widget.

This class defines an interface for handling suggestions visibility, input validation, and dropdown UI behavior. Concrete implementations should extend this class and provide the necessary functionality.

Mixed-in types
Implementers

Constructors

BaseDropdownProvider.new({List<DropDownModel<T>> initData = const [], Future<List<DropDownModel<T>>>? asyncInitData, String? validator(DropDownModel<T>?)?, required BuildContext context})
Creates a new BaseDropdownProvider instance.

Properties

asyncInitData → Future<List<DropDownModel<T>>>?
Future that provides the initial list of dropdown options.
final
asyncInitDataValue ↔ Future<void>
getter/setter pair
baseSearchResults → List<DropDownModel<T>>
final
context → BuildContext
final
Gets the height of the dropdown suggestions list.
no setter
final
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
initData → List<DropDownModel<T>>
The initial data set for the dropdown.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
searchTextController → TextEditingController
A controller to manage the search input text for filtering the dropdown.
final
setValidationError ← String?
Sets the validation error message and triggers a UI update.
no getter
suggestionsExpanded ↔ bool
Whether the suggestions list is expanded or collapsed.
getter/setter pair
textFieldFocusNode ↔ FocusNode
FocusNode for managing the text field's focus state.
getter/setter pair
validationError → String?
no setter
validator → String? Function(DropDownModel<T>?)?
Validator function that checks if a dropdown selection is valid.
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
closeSuggestions() → void
Collapses the suggestions list in the dropdown.
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
expandSuggestions({Widget? selectorWidget, bool expanded = true}) → void
Expands the suggestions list in the dropdown.
fieldBorderColor({Color? borderColor, Color? errorBorderColor}) → Color
Returns the color to be used for the border of a form field, based on validation state.
getAsyncInitData() → Future<void>
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
onInputChanged(String text) → void
Triggers an update when the input text is changed.
onValidateField(dynamic text) → String?
Validates the input field for the dropdown based on its current state.
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toggleSuggestionsExpanded({Widget? selectorWidget, bool expanded = true}) → void
Toggles the state of the suggestions list between expanded and collapsed.
toString() → String
A string representation of this object.
inherited
updateSelectorPositionIfNeeded({required Widget selectorWidget, bool expanded = true}) → void
Monitors and updates the position of the dropdown selector widget if needed.

Operators

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