Flutter Snippets - Lazy Class, Base Model, MVVM Structure, Http View Model

"Create Lazy Class": {
	"scope": "dart",
	"prefix": "lazyClass",
	"body": [
		"class $1 {",
			"static $1 _instance;",
			"static $1 get instance {",
				"if (_instance == null) _instance = $1._init();",
					"return _instance;",
			"}",
			"$1._init();",
		"}"
	],
	"description": "Lazy Class Pattern"
},
"Create Base Model Class": {
	"scope": "dart",
	"prefix": "baseModel",
	"body": [
		"abstract class BaseModel<T> {",
			"Map<String, Object> toJson();",
			"T fromJson(Map<String, Object> json);",
		"}"
	],
	"description": "Base Model Class"
},
"MVVM Base Class": {
	"scope": "dart",
	"prefix": "MVVMbase",
	"body": [
		"import 'package:flutter/material.dart';",
		"class $1 extends StatefulWidget {",
			"@override",
			"$1View createState() => new $1View();",
		"}"
	],
	"description": "MVVM Base Class"
},
"MVVM View Class": {
	"scope": "dart",
	"prefix": "MVVMview",
	"body": [
		"import 'package:flutter/material.dart';",
		"class $1View extends $1ViewModel {",
			"@override",
			"Widget build(BuildContext context) {",
				"return Text('Just a placeholder');",
			"}",
		"}"
	],
	"description": "MVVM View Class"
},
"MVVM View Model Class": {
	"scope": "dart",
	"prefix": "MVVMviewModel",
	"body": [
		"import 'package:flutter/material.dart';",
		"abstract class $1ViewModel extends State<$1> {",
		"",
		"}"
	],
	"description": "MVVM View Model Class"
},
"Http Request View Model": {
	"scope": "dart",
	"prefix": "httpViewModel",
	"body": [
		"bool isLoading = false;",
		"Future<void> $1() async {",
			"changeLoading();",
			"try {",
				"$2 = await $3;",
			"} catch (e) {",
				"showErrorDialog(e.toString());",
			"}",
			"changeLoading();",
		"}",
		"void showErrorDialog(String message) {",
			"showDialog(",
				"context: context,",
			"builder: (context) => Dialog(",
				"child: Text(message),",
				"),",
			");",
		"}",
		"void changeLoading() {",
			"setState(() {",
				"isLoading = !isLoading;",
			"});",
		"}",
	],
	"description": "Http Request View Model"
},