ReactiveImagePicker constructor

ReactiveImagePicker({
  1. Key? key,
  2. String? formControlName,
  3. FormControl<List<SelectedFile>>? formControl,
  4. Map<String, ValidationMessageFunction>? validationMessages,
  5. ControlValueAccessor<List<SelectedFile>, List<SelectedFile>>? valueAccessor,
  6. ShowErrorsFunction<List<SelectedFile>>? showErrors,
  7. InputDecoration? decoration,
  8. InputButtonBuilder? inputBuilder,
  9. SelectedFileViewBuilder? selectedFileViewBuilder,
  10. SelectedValueBuilder? selectedValueBuilder,
  11. DeleteDialogBuilder? deleteDialogBuilder,
  12. ErrorBuilder? errorBuilder,
  13. PreprocessPickerError? preprocessError,
  14. PopupDialogBuilder? popupDialogBuilder,
  15. BoxDecoration? imageContainerDecoration,
  16. OnBeforeChangeCallback? onBeforeChange,
  17. Widget? editIcon,
  18. Widget? deleteIcon,
  19. bool enabled = true,
  20. double? maxWidth,
  21. double? maxHeight,
  22. int? imageQuality,
  23. CameraDevice preferredCameraDevice = CameraDevice.rear,
  24. Duration? maxDuration,
  25. double disabledOpacity = 0.5,
  26. List<ImagePickerMode> modes = ImagePickerMode.values,
  27. SelectedImageBuilder? selectedImageBuilder,
  28. SelectedVideoBuilder? selectedVideoBuilder,
})

Creates a ReactiveImagePicker that contains a DropdownSearch.

Can optionally provide a formControl to bind this widget to a control.

Can optionally provide a formControlName to bind this ReactiveFormField to a FormControl.

Must provide one of the arguments formControl or a formControlName, but not both at the same time.

Can optionally provide a validationMessages argument to customize a message for different kinds of validation errors.

Can optionally provide a valueAccessor to set a custom value accessors. See ControlValueAccessor.

Can optionally provide a showErrors function to customize when to show validation messages. Reactive Widgets make validation messages visible when the control is INVALID and TOUCHED, this behavior can be customized in the showErrors function.

Example:

Binds a text field.

final form = fb.group({'email': Validators.required});

ReactiveUpload(
  formControlName: 'image',
),

Binds a text field directly with a FormControl.

final form = fb.group({'image': Validators.required});

ReactiveUpload(
  formControl: form.control('image'),
),

Customize validation messages

ReactiveUpload(
  formControlName: 'image',
  validationMessages: {
    ValidationMessage.required: 'The image must not be empty',
  }
),

Customize when to show up validation messages.

ReactiveUpload(
  formControlName: 'image',
  showErrors: (control) => control.invalid && control.touched && control.dirty,
),

For documentation about the various parameters, see the ImagePicker class and ImagePicker, the constructor.

Implementation

ReactiveImagePicker({
  super.key,
  super.formControlName,
  super.formControl,
  Map<String, ValidationMessageFunction>? validationMessages,
  super.valueAccessor,
  super.showErrors,
  InputDecoration? decoration,
  InputButtonBuilder? inputBuilder,
  SelectedFileViewBuilder? selectedFileViewBuilder,
  SelectedValueBuilder? selectedValueBuilder,
  DeleteDialogBuilder? deleteDialogBuilder,
  ErrorBuilder? errorBuilder,
  PreprocessPickerError? preprocessError,
  PopupDialogBuilder? popupDialogBuilder,
  BoxDecoration? imageContainerDecoration,
  OnBeforeChangeCallback? onBeforeChange,
  Widget? editIcon,
  Widget? deleteIcon,
  bool enabled = true,
  double? maxWidth,
  double? maxHeight,
  int? imageQuality,
  CameraDevice preferredCameraDevice = CameraDevice.rear,
  Duration? maxDuration,
  double disabledOpacity = 0.5,
  List<ImagePickerMode> modes = ImagePickerMode.values,
  SelectedImageBuilder? selectedImageBuilder,
  SelectedVideoBuilder? selectedVideoBuilder,
}) : super(
        validationMessages: _validationMessages(validationMessages),
        builder: (field) {
          final InputDecoration effectiveDecoration = (decoration ??
                  const InputDecoration())
              .applyDefaults(Theme.of(field.context).inputDecorationTheme);

          return IgnorePointer(
            ignoring: !field.control.enabled,
            child: Opacity(
              opacity: field.control.enabled ? 1 : disabledOpacity,
              child: ImagePickerWidget(
                modes: modes,
                selectedFileViewBuilder: selectedFileViewBuilder,
                selectedValueBuilder: selectedValueBuilder,
                onBeforePick: () async {
                  field.control.focus();
                  field.control.updateValueAndValidity();
                },
                onAfterPick: () async {
                  field.control.unfocus();
                  // field.control.updateValueAndValidity();
                  field.control.markAsTouched();
                },
                popupDialogBuilder: popupDialogBuilder,
                onBeforeChange: onBeforeChange,
                processPickerError: preprocessError,
                inputBuilder: inputBuilder,
                deleteDialogBuilder: deleteDialogBuilder,
                editIcon: editIcon,
                deleteIcon: deleteIcon,
                decoration:
                    effectiveDecoration.copyWith(errorText: field.errorText),
                onChanged: field.didChange,
                value: field.value ?? [],
                maxHeight: maxHeight,
                maxWidth: maxWidth,
                imageQuality: imageQuality,
                preferredCameraDevice: preferredCameraDevice,
                maxDuration: maxDuration,
                selectedImageBuilder: selectedImageBuilder,
                selectedVideoBuilder: selectedVideoBuilder,
              ),
            ),
          );
        },
      );