feat: Add support for spacer widget

examples/mirai_gallery/assets/json/home_screen.json

@@ -836,6 +836,37 @@
       }
     }
   },
+  {
+    "type": "listTile",
+    "leading": {
+      "type": "icon",
+      "iconType": "material",
+      "icon": "space_dashboard"
+    },
+    "title": {
+      "type": "text",
+      "data": "Mirai Spacer",
+      "style": {
+        "fontSize": 21
+      }
+    },
+    "subtitle": {
+      "type": "text",
+      "data": "Creates an adjustable, empty spacer that can be used to tune the spacing between widgets in a Flex container.",
+      "style": {
+        "fontSize": 12
+      }
+    },
+    "isThreeLine": true,
+    "onTap": {
+      "actionType": "navigate",
+      "navigationStyle": "push",
+      "widgetJson": {
+        "type": "exampleScreen",
+        "assetPath": "assets/json/spacer_example.json"
+      }
+    }
+  },
   {
     "type": "listTile",
     "leading": {

examples/mirai_gallery/assets/json/spacer_example.json

@@ -0,0 +1,84 @@
+{
+    "type": "scaffold",
+    "appBar": {
+      "type": "appBar",
+      "title": {
+        "type": "text",
+        "data": "Spacer"
+      }
+    },
+    "body": {
+        "type": "padding",
+        "padding": {
+            "left": 20,
+            "right": 20,
+            "top": 20,
+            "bottom": 20
+          },
+        "child": {
+            "type": "column",
+            "children": [
+                {
+                    "type": "textField",
+                    "keyboardType": "text",
+                    "maxLines": 1,
+                    "decoration": {
+                      "hintText": "Enter your pin"
+                    }
+                },
+                {
+                    "type": "spacer"
+                },
+                {
+                    "type": "row",
+                    "children": [
+                        {
+                            "type": "row",
+                            "children": [
+                                {
+                                    "type": "text",
+                                    "data": "Forgot Pin",
+                                    "style": {
+                                        "fontSize": 17
+                                    }
+                                },
+                                {
+                                    "type": "icon",
+                                    "iconType": "material",
+                                    "icon": "keyboard_arrow_right",
+                                    "size": 24
+                                }
+                            ]
+                        },
+                        {
+                            "type": "spacer"
+                        },
+                        {
+                            "type": "text",
+                            "data": "Need help?",
+                            "style": {
+                                "fontSize": 17
+                            }
+                        }
+                    ]
+                },
+                {
+                    "type": "spacer",
+                    "flex": 2
+                },
+                {
+                    "type": "elevatedButton",
+                    "child": {
+                      "type": "text",
+                      "data": "Submit"
+                    },
+                    "style": {
+                      "backgroundColor": "primary",
+                      "foregroundColor": "#ffffff"
+                    },
+                    "onPressed": {}
+                }
+            ]
+        }
+    }
+  }

packages/mirai/lib/src/framework/mirai.dart

@@ -56,6 +56,7 @@ class Mirai {
     const MiraiCheckBoxWidgetParser(),
     const MiraiExpandedParser(),
     const MiraiFlexibleParser(),
+    const MiraiMiraiSpacerParser(),
     const MiraiSafeAreaParser(),
     const MiraiSwitchParser(),
     const MiraiAlignParser(),

packages/mirai/lib/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer.dart

@@ -0,0 +1,16 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+export 'package:mirai/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer_parser.dart';
+
+part 'mirai_mirai_spacer.freezed.dart';
+part 'mirai_mirai_spacer.g.dart';
+
+@freezed
+class MiraiMiraiSpacer with _$MiraiMiraiSpacer {
+  const factory MiraiMiraiSpacer({
+    @Default(1) int flex,
+  }) = _MiraiMiraiSpacer;
+
+  factory MiraiMiraiSpacer.fromJson(Map<String, dynamic> json) =>
+      _$MiraiMiraiSpacerFromJson(json);
+}

packages/mirai/lib/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer.freezed.dart

@@ -0,0 +1,153 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'mirai_mirai_spacer.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+MiraiMiraiSpacer _$MiraiMiraiSpacerFromJson(Map<String, dynamic> json) {
+  return _MiraiMiraiSpacer.fromJson(json);
+}
+
+/// @nodoc
+mixin _$MiraiMiraiSpacer {
+  int get flex => throw _privateConstructorUsedError;
+
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+  @JsonKey(ignore: true)
+  $MiraiMiraiSpacerCopyWith<MiraiMiraiSpacer> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $MiraiMiraiSpacerCopyWith<$Res> {
+  factory $MiraiMiraiSpacerCopyWith(
+          MiraiMiraiSpacer value, $Res Function(MiraiMiraiSpacer) then) =
+      _$MiraiMiraiSpacerCopyWithImpl<$Res, MiraiMiraiSpacer>;
+  @useResult
+  $Res call({int flex});
+}
+
+/// @nodoc
+class _$MiraiMiraiSpacerCopyWithImpl<$Res, $Val extends MiraiMiraiSpacer>
+    implements $MiraiMiraiSpacerCopyWith<$Res> {
+  _$MiraiMiraiSpacerCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? flex = null,
+  }) {
+    return _then(_value.copyWith(
+      flex: null == flex
+          ? _value.flex
+          : flex // ignore: cast_nullable_to_non_nullable
+              as int,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$MiraiMiraiSpacerImplCopyWith<$Res>
+    implements $MiraiMiraiSpacerCopyWith<$Res> {
+  factory _$$MiraiMiraiSpacerImplCopyWith(_$MiraiMiraiSpacerImpl value,
+          $Res Function(_$MiraiMiraiSpacerImpl) then) =
+      __$$MiraiMiraiSpacerImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({int flex});
+}
+
+/// @nodoc
+class __$$MiraiMiraiSpacerImplCopyWithImpl<$Res>
+    extends _$MiraiMiraiSpacerCopyWithImpl<$Res, _$MiraiMiraiSpacerImpl>
+    implements _$$MiraiMiraiSpacerImplCopyWith<$Res> {
+  __$$MiraiMiraiSpacerImplCopyWithImpl(_$MiraiMiraiSpacerImpl _value,
+      $Res Function(_$MiraiMiraiSpacerImpl) _then)
+      : super(_value, _then);
+
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? flex = null,
+  }) {
+    return _then(_$MiraiMiraiSpacerImpl(
+      flex: null == flex
+          ? _value.flex
+          : flex // ignore: cast_nullable_to_non_nullable
+              as int,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$MiraiMiraiSpacerImpl implements _MiraiMiraiSpacer {
+  const _$MiraiMiraiSpacerImpl({this.flex = 1});
+
+  factory _$MiraiMiraiSpacerImpl.fromJson(Map<String, dynamic> json) =>
+      _$$MiraiMiraiSpacerImplFromJson(json);
+
+  @override
+  @JsonKey()
+  final int flex;
+
+  @override
+  String toString() {
+    return 'MiraiMiraiSpacer(flex: $flex)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$MiraiMiraiSpacerImpl &&
+            (identical(other.flex, flex) || other.flex == flex));
+  }
+
+  @JsonKey(ignore: true)
+  @override
+  int get hashCode => Object.hash(runtimeType, flex);
+
+  @JsonKey(ignore: true)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$MiraiMiraiSpacerImplCopyWith<_$MiraiMiraiSpacerImpl> get copyWith =>
+      __$$MiraiMiraiSpacerImplCopyWithImpl<_$MiraiMiraiSpacerImpl>(
+          this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$MiraiMiraiSpacerImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _MiraiMiraiSpacer implements MiraiMiraiSpacer {
+  const factory _MiraiMiraiSpacer({final int flex}) = _$MiraiMiraiSpacerImpl;
+
+  factory _MiraiMiraiSpacer.fromJson(Map<String, dynamic> json) =
+      _$MiraiMiraiSpacerImpl.fromJson;
+
+  @override
+  int get flex;
+  @override
+  @JsonKey(ignore: true)
+  _$$MiraiMiraiSpacerImplCopyWith<_$MiraiMiraiSpacerImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

packages/mirai/lib/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer_parser.dart

@@ -0,0 +1,20 @@
+import 'package:flutter/material.dart';
+import 'package:mirai/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer.dart';
+import 'package:mirai/src/utils/widget_type.dart';
+import 'package:mirai_framework/mirai_framework.dart';
+
+class MiraiMiraiSpacerParser extends MiraiParser<MiraiMiraiSpacer> {
+  const MiraiMiraiSpacerParser();
+
+  @override
+  MiraiMiraiSpacer getModel(Map<String, dynamic> json) =>
+      MiraiMiraiSpacer.fromJson(json);
+
+  @override
+  String get type => WidgetType.spacer.name;
+
+  @override
+  Widget parse(BuildContext context, MiraiMiraiSpacer model) {
+    return Spacer(flex: model.flex);
+  }
+}

packages/mirai/lib/src/parsers/parsers.dart

@@ -47,6 +47,7 @@ export 'package:mirai/src/parsers/mirai_input_formatters/mirai_input_formatter.d
 export 'package:mirai/src/parsers/mirai_list_tile/mirai_list_tile.dart';
 export 'package:mirai/src/parsers/mirai_list_tile_theme_data/mirai_list_tile_theme_data.dart';
 export 'package:mirai/src/parsers/mirai_list_view/mirai_list_view.dart';
+export 'package:mirai/src/parsers/mirai_mirai_spacer/mirai_mirai_spacer.dart';
 export 'package:mirai/src/parsers/mirai_navigation_bar_item/mirai_bottom_navigation_bar_item.dart';
 export 'package:mirai/src/parsers/mirai_navigation_bar_theme_data/mirai_navigation_bar_theme_data.dart';
 export 'package:mirai/src/parsers/mirai_network_widget/mirai_network_widget.dart';

packages/mirai/lib/src/utils/widget_type.dart

@@ -35,6 +35,7 @@ enum WidgetType {
   checkBox,
   expanded,
   flexible,
+  spacer,
   safeArea,
   align,
   pageView,