app.jsx — コアコンポーネントを使った完全な検証例
実際のクリエーター配線と、チェックリストの状態モデル全体。
jsx
import React,{useState,useRef} from 'react';
import{createRoot}from'react-dom/client';
import{Pressable,Text,View,TextInput,ActivityIndicator}from'react-native-web';
import{createButton}from'@gluestack-ui/core/button/creator';
import{createInput}from'@gluestack-ui/core/input/creator';
const Button=createButton({Root:Pressable,Text,Group:View,Spinner:ActivityIndicator,Icon:View});
const Input=createInput({Root:View,Input:TextInput,Slot:Pressable,Icon:View});
const seed=[{id:1,name:'Sketchbook',packed:true},{id:2,name:'Pencil roll',packed:false},{id:3,name:'Water bottle',packed:false}];
function App(){const[items,setItems]=useState(seed),[name,setName]=useState(''),[error,setError]=useState(''),[message,setMessage]=useState('Pack each item when it is ready.');const next=useRef(4),field=useRef(null);const count=items.filter(x=>x.packed).length;
function add(){const v=name.trim();if(!v||items.some(x=>x.name.toLowerCase()===v.toLowerCase())){setError(!v?'Enter the name of an item.':'That item is already in the kit.');field.current.focus();return}setItems([...items,{id:next.current++,name:v,packed:false}]);setName('');setError('');setMessage(v+' added to this local kit.')}
return <main><header><p className="eyebrow">GLUESTACK UI / CORE COMPONENT STUDY</p><h1>A small kit.<br/>A clearer start.</h1><p className="intro">Prepare a drawing kit with actual gluestack core Button and Input creators. Your checklist stays in this browser session.</p></header><div className="layout"><section className="panel"><div className="sectionhead"><h2>Your field kit</h2><span className="badge">{count} of {items.length} packed</span></div><div className="meter" role="progressbar" aria-label="Packed items" aria-valuemin={0} aria-valuemax={items.length} aria-valuenow={count}><i style={{width:100*count/items.length+'%'}}/></div><ul>{items.map(item=><li key={item.id}><div><strong>{item.name}</strong><span>{item.packed?'Packed and ready':'Still to pack'}</span></div><Button onPress={()=>{setItems(items.map(x=>x.id===item.id?{...x,packed:!x.packed}:x));setMessage(item.name+(item.packed?' marked to pack.':' marked packed.'))}} style={item.packed?styles.secondary:styles.primary} aria-label={(item.packed?'Unpack ':'Pack ')+item.name}><Button.Text style={{color:item.packed?'#171717':'#fafafa',fontSize:14,fontWeight:600}}>{item.packed?'Unpack':'Pack item'}</Button.Text></Button></li>)}</ul><p className="status" role="status">{message}</p></section><aside className="panel"><div className="drawing" aria-hidden="true"><span className="book">FIELD<br/>NOTES</span><i className="pencil"/></div><h2>Add one useful thing</h2><label htmlFor="kit-name">Item name</label><Input isInvalid={!!error} isRequired style={styles.input}><Input.Input id="kit-name" aria-label="Item name" aria-describedby={error?'kit-error':'kit-hint'} ref={field} value={name} onChangeText={v=>{setName(v);setError('')}} onSubmitEditing={add} maxLength={60} style={styles.field}/></Input><p id="kit-hint" className="hint">Use a short, unique name. Maximum 60 characters.</p>{error&&<p id="kit-error" className="error" role="alert">{error}</p>}<Button onPress={add} style={styles.primary}><Button.Text style={styles.primaryText}>Add to kit</Button.Text></Button><Button onPress={()=>{setItems(seed);setName('');setError('');setMessage('Example kit restored.');next.current=4}} style={styles.reset}><Button.Text style={{color:'#737373',fontSize:14}}>Reset example kit</Button.Text></Button></aside></div><p className="scope">Native @gluestack-ui/core 5.0.15 behavior rendered through React Native Web. Original OpenDesign layout and artwork; explicitly styled with documented v5 light color roles. This is a web-only study, not an Expo build or the CLI-generated NativeWind component set.</p></main>}
const styles={primary:{backgroundColor:'#171717',paddingVertical:12,paddingHorizontal:16,borderRadius:8,alignItems:'center',justifyContent:'center'},secondary:{backgroundColor:'#f5f5f5',paddingVertical:12,paddingHorizontal:16,borderRadius:8,alignItems:'center',justifyContent:'center'},primaryText:{color:'#fafafa',fontSize:14,fontWeight:600},input:{borderWidth:1,borderColor:'#e5e5e5',borderRadius:8,marginTop:8},field:{padding:12,fontSize:16,color:'#0a0a0a',outlineStyle:'none'},reset:{paddingVertical:16,alignItems:'center'}};
createRoot(document.getElementById('app')).render(<App/>);
