json2dart/lib/json_generator.dart

import 'dart:convert';
import 'dart:html';

import 'package:json2dart_serialization/generator.dart';

String entityName = null;

bool useJsonKey = true;

bool isCamelCase = true;

const defaultValue = """{
  "body": "",
  "data": [1],
  "input_content":["1"],
  "list1":[{"name":"hello"}],
  "number": [1.02],
  "user":{"name":"abc"}
}""";

void main() {
  TextAreaElement jsonInput = querySelector("#json");
  jsonInput.value = defaultValue;

  jsonInput.onInput.listen((event) {
    refreshData();
  });

  InputElement entityNameEle = querySelector("#out_entity_name");
  entityNameEle.onInput.listen((event) {
    entityName = entityNameEle.value;
    refreshData();
  });

  ButtonElement formatButton = querySelector("#format");
  formatButton.onClick.listen((click) {
    String pretty;
    try {
      pretty = formatJson(jsonInput.value);
    } on Exception {
      return;
    }
    jsonInput.value = pretty;
  });

  InputElement eJsonKey = querySelector("#use_json_key");
  InputElement eCamelCase = querySelector("#camelCase");

  void onJsonKeyChange() {
    useJsonKey = eJsonKey.checked;
    eCamelCase.disabled = !useJsonKey;
    isCamelCase = false;
    refreshData();
  }

  eJsonKey.checked = useJsonKey;
  eJsonKey.onInput.listen((event) {
    onJsonKeyChange();
  });

  querySelector("#check_label").onClick.listen((event) {
    eJsonKey.checked = !eJsonKey.checked;
    onJsonKeyChange();
  });

  eCamelCase.checked = isCamelCase;
  eCamelCase.onInput.listen((event) {
    isCamelCase = eCamelCase.checked;
    refreshData();
  });

  querySelector("#camelCaseLabel").onClick.listen((event) {
    eCamelCase.checked = !eCamelCase.checked;
    refreshData();
  });

  refreshData();
}

void refreshData() {
  TextAreaElement jsonInput = querySelector("#json");
  var string = jsonInput.value;
  String pretty;
  TextAreaElement result = querySelector("#result");
  try {
    pretty = formatJson(string);
  } on Exception {
    result.value = "不是一个正确的json";
    return;
  }
  String entityClassName;
  if (entityName == null || entityName == "" || entityName.trim() == "") {
    entityClassName = "Entity";
  } else {
    entityClassName = entityName;
  }

  var generator = Generator(string, 'test.dart', entityClassName);
  var dartCode = generator.makeDartCode();

  result.value = dartCode;
}

String formatJson(String jsonString) {
  var map = json.decode(jsonString);
  var prettyString = JsonEncoder.withIndent("  ").convert(map);
  return prettyString;
}