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JsonSchemaBloc.dart
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JsonSchemaBloc.dart
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import 'dart:async';
import 'package:flutter/services.dart';
import 'package:flutter_jsonschema/models/Properties.dart';
import 'dart:convert';
import 'package:rxdart/subjects.dart';
import 'package:flutter_jsonschema/models/Schema.dart';
class JsonSchemaBloc {
Map<String, BehaviorSubject<dynamic>> _formData =
Map<String, BehaviorSubject<dynamic>>();
Map<String, Stream<dynamic>> formData = Map<String, Stream<dynamic>>();
StreamController<Map<String, dynamic>> jsonDataAdd =
StreamController<Map<String, dynamic>>();
BehaviorSubject<Schema> _jsonSchema =
BehaviorSubject<Schema>(seedValue: null);
Stream<Schema> get jsonSchema => _jsonSchema;
Map<String, dynamic> _data = Map<String, dynamic>();
PublishSubject<String> _submitData = PublishSubject<String>();
Stream<String> get submitData => _submitData;
JsonSchemaBloc() {
_jsonSchema.stream.listen((schema) {
initDataBinding(schema.properties);
});
jsonDataAdd.stream.listen((data){
data.forEach((key,value){
if(_formData.containsKey(key)){
_formData[key].add(value);
_data[key] = value;
}
if(key=='submit'){
_submitData.add(getFormData());
}
});
});
}
Future<Schema> readFromFile() async {
String content = await rootBundle.loadString('assets/testSchema.json');
Map<String, dynamic> jsonMap = json.decode(content);
Schema schema = Schema.fromJson(jsonMap);
initDataBinding(schema.properties);
return schema;
}
void getTestSchema() async {
String content = await rootBundle.loadString('assets/testSchema.json');
Map<String, dynamic> jsonMap = json.decode(content);
_jsonSchema.add(Schema.fromJson(jsonMap));
}
void initDataBinding(List<Properties> properties) {
properties.forEach((prop) {
_formData[prop.id] = BehaviorSubject<dynamic>();
formData[prop.id] = _formData[prop.id].stream;
_formData[prop.id].add(prop.defaultValue);
});
}
String getFormData(){
return json.encode(_data);
}
dispose() {
_formData.forEach((key, value) {
value.close();
});
_jsonSchema.close();
jsonDataAdd.close();
}
}