Editor/Systems/MainBar.js

import React from 'react';
import {StyleSheet, View, Text , Button} from 'react-native';

import { TextInput } from 'react-native';


export default class MainBar{
	constructor(){
		this.__save = null
	}

	onSave(fn){
		this.__save = fn;
	}

	save(){
		this.__save && this.__save();
	}

	triggerSave(){
		this.save();
	}
	none(){
		
	}
	render(){
		return (
		<View style={styles.container}>
			<Text>
				Structure
			</Text>

			<Text>
				Design
			</Text>

			<Button 
			onPress={(e) => this.triggerSave()} 
			title="Save"
  			color="#841584" />
  			<Button 
			onPress={(e) => this.none()} 
			title="AnotherFunc"
  			color="#841584" />
  			
		</View>)
	}
}

const styles = StyleSheet.create({
	container:{
		flex:1,
		justifyContent: 'space-around',
		flexDirection:'row',

	}
	})