DropdownFlutter<T> constructor

DropdownFlutter<T>({
  1. Key? key,
  2. required List<T>? items,
  3. required dynamic onChanged(
    1. T?
    )?,
  4. SingleSelectController<T?>? controller,
  5. ScrollController? itemsScrollController,
  6. T? initialItem,
  7. String? hintText,
  8. CustomDropdownDecoration? decoration,
  9. String? validator(
    1. T?
    )?,
  10. bool validateOnChange = true,
  11. dynamic visibility(
    1. bool
    )?,
  12. OverlayPortalController? overlayController,
  13. _ListItemBuilder<T>? listItemBuilder,
  14. _HeaderBuilder<T>? headerBuilder,
  15. _HintBuilder? hintBuilder,
  16. int maxlines = 1,
  17. double? overlayHeight,
  18. EdgeInsets? closedHeaderPadding,
  19. EdgeInsets? expandedHeaderPadding,
  20. EdgeInsets? itemsListPadding,
  21. EdgeInsets? listItemPadding,
  22. bool canCloseOutsideBounds = true,
  23. bool hideSelectedFieldWhenExpanded = false,
  24. bool excludeSelected = true,
  25. bool enabled = true,
  26. CustomDropdownDisabledDecoration? disabledDecoration,
  27. Duration? animationDuration,
  28. Curve? animationCurve,
  29. bool enableHapticFeedback = false,
  30. String groupBy(
    1. T item
    )?,
  31. _GroupHeaderBuilder? groupHeaderBuilder,
  32. int recentSelectionsMaxCount = 0,
  33. List<T>? initialRecentItems,
  34. ValueChanged<List<T>>? onRecentItemsChanged,
  35. bool enableKeyboardNavigation = false,
  36. bool highlightMatchedText = false,
  37. bool showSelectAll = false,
  38. String? selectAllText,
  39. String? clearAllText,
})

Implementation

DropdownFlutter({
  super.key,
  required this.items,
  required this.onChanged,
  this.controller,
  this.itemsScrollController,
  this.initialItem,
  this.hintText,
  this.decoration,
  this.validator,
  this.validateOnChange = true,
  this.visibility,
  this.overlayController,
  this.listItemBuilder,
  this.headerBuilder,
  this.hintBuilder,
  this.maxlines = 1,
  this.overlayHeight,
  this.closedHeaderPadding,
  this.expandedHeaderPadding,
  this.itemsListPadding,
  this.listItemPadding,
  this.canCloseOutsideBounds = true,
  this.hideSelectedFieldWhenExpanded = false,
  this.excludeSelected = true,
  this.enabled = true,
  this.disabledDecoration,
  this.animationDuration,
  this.animationCurve,
  this.enableHapticFeedback = false,
  this.groupBy,
  this.groupHeaderBuilder,
  this.recentSelectionsMaxCount = 0,
  this.initialRecentItems,
  this.onRecentItemsChanged,
  this.enableKeyboardNavigation = false,
  this.highlightMatchedText = false,
  this.showSelectAll = false,
  this.selectAllText,
  this.clearAllText,
}) : assert(
       initialItem == null || controller == null,
       'Only one of initialItem or controller can be specified at a time',
     ),
     assert(
       initialItem == null || items!.contains(initialItem),
       'Initial item must match with one of the item in items list.',
     ),
     assert(
       controller == null ||
           controller.value == null ||
           items!.contains(controller.value),
       'Controller value must match with one of the item in items list.',
     ),
     _searchType = null,
     _dropdownType = _DropdownType.singleSelect,
     futureRequest = null,
     futureRequestDelay = null,
     noResultFoundBuilder = null,
     noResultFoundText = null,
     searchHintText = null,
     initialItems = null,
     onListChanged = null,
     listValidator = null,
     headerListBuilder = null,
     searchRequestLoadingIndicator = null,
     closeDropDownOnClearFilterSearch = false,
     multiSelectController = null;