Added height screen for registration & set adequate options and initial parameters for height/weight

lib/presentation/height_screen/bloc/height_bloc.dart

@@ -0,0 +1,40 @@
+import 'package:equatable/equatable.dart';
+import 'package:flutter/material.dart';
+import '/core/app_export.dart';
+import 'package:eatvio_app/presentation/height_screen/models/height_model.dart';
+part 'height_event.dart';
+part 'height_state.dart';
+
+/// A bloc that manages the state of a Height according to the event that is dispatched to it.
+class HeightBloc extends Bloc<HeightEvent, HeightState> {
+  HeightBloc(HeightState initialState) : super(initialState) {
+    on<HeightInitialEvent>(_onInitialize);
+    on<ChangeDropDownEvent>(_changeDropDown);
+  }
+
+  _onInitialize(
+    HeightInitialEvent event,
+    Emitter<HeightState> emit,
+  ) async {
+    emit(state.copyWith(
+        heightModelObj: state.heightModelObj
+            ?.copyWith(dropdownItemList: fillDropdownItemList())));
+  }
+
+  _changeDropDown(
+    ChangeDropDownEvent event,
+    Emitter<HeightState> emit,
+  ) {
+    emit(state.copyWith(selectedDropDownValue: event.value));
+  }
+
+  List<SelectionPopupModel> fillDropdownItemList() {
+    List<SelectionPopupModel> selectionPopupModels = [];
+
+    for (int i = 140; i <= 220; i++) {
+      selectionPopupModels
+          .add(SelectionPopupModel(id: i - 34, title: i.toString()));
+    }
+    return selectionPopupModels;
+  }
+}

lib/presentation/height_screen/bloc/height_event.dart

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+// ignore_for_file: must_be_immutable
+
+part of 'height_bloc.dart';
+
+/// Abstract class for all events that can be dispatched from the
+///Height widget.
+///
+/// Events must be immutable and implement the [Equatable] interface.
+@immutable
+abstract class HeightEvent extends Equatable {}
+
+/// Event that is dispatched when the Height widget is first created.
+class HeightInitialEvent extends HeightEvent {
+  @override
+  List<Object?> get props => [];
+}
+
+///event for dropdown selection
+class ChangeDropDownEvent extends HeightEvent {
+  ChangeDropDownEvent({required this.value});
+
+  SelectionPopupModel value;
+
+  @override
+  List<Object?> get props => [
+        value,
+      ];
+}

lib/presentation/height_screen/bloc/height_state.dart

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+// ignore_for_file: must_be_immutable
+
+part of 'height_bloc.dart';
+
+/// Represents the state of Height in the application.
+class HeightState extends Equatable {
+  HeightState({
+    this.selectedDropDownValue,
+    this.heightModelObj,
+  });
+
+  SelectionPopupModel? selectedDropDownValue;
+
+  HeightModel? heightModelObj;
+
+  @override
+  List<Object?> get props => [
+        selectedDropDownValue,
+        heightModelObj,
+      ];
+  HeightState copyWith({
+    SelectionPopupModel? selectedDropDownValue,
+    HeightModel? heightModelObj,
+  }) {
+    return HeightState(
+      selectedDropDownValue:
+          selectedDropDownValue ?? this.selectedDropDownValue,
+      heightModelObj: heightModelObj ?? this.heightModelObj,
+    );
+  }
+}