Art Course Seat Selector
Complete the seat picker for an art class scenario: includes real content, actionable controls, clear status feedback, and responsive layouts.
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<title>Art Course Seat Selector</title>
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<header class="mast"><div><span class="eyebrow">industrial / Seat Selector / INTERMEDIATE</span><h1>Art Course Seat Selector</h1><p class="intro">Complete the seat picker for an art class scenario: includes real content, actionable controls, clear status feedback, and responsive layouts.</p></div><span class="scenario">Art Class</span></header>
<div class="composition-index"><section class="demo" aria-label="Control interaction area for the art class seat selector"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Art Class SESSION</span><h2>Art Class Timer Board</h2></div><output id="workflowSessionClock">00:45</output><label>Round Duration<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>sec</span></label><button id="workflowSessionToggle" class="action primary" type="button">Start confirmation flow</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Art class progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:commerce-service-flows-seat-selection --><div class="seat-selection-studio"><section><span class="eyebrow">SEAT MAP</span><h2>Art Class Seat Selection Scheduling Desk</h2><div class="seat-screen">Front / Service Desk</div><div id="seatMap" class="seat-map" role="grid" aria-label="Seating chart"><button type="button" role="gridcell" data-seat="1" aria-pressed="false" aria-label="Seat 1 available" data-core-bridge="commerce-service-flows-seat-selection">1</button><button type="button" role="gridcell" data-seat="2" aria-pressed="false" aria-label="Seat 2, optional">2</button><button type="button" role="gridcell" data-seat="3" aria-pressed="false" disabled aria-label="Seat 3, occupied">3</button><button type="button" role="gridcell" data-seat="4" aria-pressed="false" aria-label="Seat 4, optional">4</button><button type="button" role="gridcell" data-seat="5" aria-pressed="false" aria-label="Seat 5, optional">5</button><button type="button" role="gridcell" data-seat="6" aria-pressed="false" aria-label="Seat 6, optional">6</button><button type="button" role="gridcell" data-seat="7" aria-pressed="false" aria-label="Seat 7, optional">7</button><button type="button" role="gridcell" data-seat="8" aria-pressed="false" disabled aria-label="Seat 8, occupied">8</button><button type="button" role="gridcell" data-seat="9" aria-pressed="false" aria-label="Seat 9, optional">9</button><button type="button" role="gridcell" data-seat="10" aria-pressed="false" aria-label="Seat 10 available">10</button><button type="button" role="gridcell" data-seat="11" aria-pressed="false" aria-label="Seat 11, selectable">11</button><button type="button" role="gridcell" data-seat="12" aria-pressed="false" aria-label="Seat 12, optional">12</button><button type="button" role="gridcell" data-seat="13" aria-pressed="false" disabled aria-label="Seat 13, occupied">13</button><button type="button" role="gridcell" data-seat="14" aria-pressed="false" aria-label="Seats 14 optional">14</button><button type="button" role="gridcell" data-seat="15" aria-pressed="false" aria-label="Seat 15, optional">15</button><button type="button" role="gridcell" data-seat="16" aria-pressed="false" aria-label="Seat 16, optional">16</button><button type="button" role="gridcell" data-seat="17" aria-pressed="false" aria-label="Seat 17, available">17</button><button type="button" role="gridcell" data-seat="18" aria-pressed="false" disabled aria-label="Seat 18, occupied">18</button><button type="button" role="gridcell" data-seat="19" aria-pressed="false" aria-label="Seat 19, optional">19</button><button type="button" role="gridcell" data-seat="20" aria-pressed="false" aria-label="Seat 20, optional">20</button></div><div class="seat-legend"><span><i></i>Optional</span><span><i></i>Selected</span><span><i></i>Occupied</span></div></section><aside class="panel"><span>Selected Seat</span><strong id="seatCount" class="metric">0</strong><p id="seatNames">Not selected yet</p><output id="seatTotal">¥0</output><strong id="seatZone">Current section: idle</strong><ol id="seatChosenList"><li>No seat added yet</li></ol><button id="confirmSeats" class="action primary" type="button">Confirm seat</button></aside></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 interaction checkpoints</strong><ol id="workflowSessionLaps" aria-label="Round Log"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>Art Class FIELD INDEX</span></aside></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:commerce-service-flows-seat-selection */
const seatButtons=[...document.querySelectorAll('.seat-map button:not(:disabled)')];function renderSeatStudio(){const selected=seatButtons.filter(button=>button.getAttribute('aria-pressed')==='true');document.querySelector('#seatCount').textContent=selected.length;document.querySelector('#seatNames').textContent=selected.length?'Seat '+selected.map(button=>button.dataset.seat).join('、'):'Not selected yet';document.querySelector('#seatTotal').textContent='¥'+selected.length*38;document.querySelector('#seatZone').textContent='Current section:'+(selected.length?selected.some(button=>Number(button.dataset.seat)>15)?'Back row':'Front-center':'Available');document.querySelector('#seatChosenList').replaceChildren(...(selected.length?selected.map(button=>{const item=document.createElement('li');item.textContent='Seat '+button.dataset.seat;return item;}):[Object.assign(document.createElement('li'),{textContent:'No seat added yet'})]));announce('Selected '+selected.length+' seats');}seatButtons.forEach(button=>button.addEventListener('click',()=>{button.setAttribute('aria-pressed',String(button.getAttribute('aria-pressed')!=='true'));renderSeatStudio();}));document.querySelector('#confirmSeats').addEventListener('click',()=>announce(seatButtons.some(button=>button.getAttribute('aria-pressed')==='true')?'Seat confirmed locally':'Please select a seat first'));renderSeatStudio();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"commerce-service-flows-seat-selection","selector":"[data-core-bridge=\"commerce-service-flows-seat-selection\"]","mode":"click","key":"Enter"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("click",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();workflowBridgeControl.click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSessionCore=document.querySelector('#workflowCore');const workflowSessionToggle=document.querySelector('#workflowSessionToggle');const workflowSessionLength=document.querySelector('#workflowSessionLength');const workflowSessionState={phase:'ready',elapsed:0,limit:Number(workflowSessionLength.value),checkpoints:[],timer:null};function workflowSessionFormat(seconds){return String(Math.floor(seconds/60)).padStart(2,'0')+':'+String(seconds%60).padStart(2,'0');}function workflowSessionDrive(){const percent=Math.min(100,Math.round(workflowSessionState.elapsed/workflowSessionState.limit*100));document.querySelector('#workflowSessionClock').textContent=workflowSessionFormat(Math.max(0,workflowSessionState.limit-workflowSessionState.elapsed));const progress=document.querySelector('#workflowSessionProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';workflowSessionCore.dataset.sessionPhase=workflowSessionState.phase;document.querySelector('#workflowSessionScore').textContent=workflowSessionState.checkpoints.length+' interactive checkpoints';}function workflowSessionLap(label){workflowSessionState.checkpoints.push({label,at:workflowSessionState.elapsed});const item=document.createElement('li');item.textContent=label+' · '+workflowSessionFormat(workflowSessionState.elapsed);document.querySelector('#workflowSessionLaps').append(item);workflowSessionDrive();}function workflowSessionStop(complete=false){clearInterval(workflowSessionState.timer);workflowSessionState.timer=null;workflowSessionState.phase=complete?'complete':'paused';workflowSessionToggle.textContent=complete?'Restart':'Continue round';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Art Class Round Completed':'Round paused');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Pause round';workflowSessionToggle.setAttribute('aria-pressed','true');const bridge=workflowBridgeActivate();workflowSessionLap(bridge.summary);clearInterval(workflowSessionState.timer);workflowSessionState.timer=setInterval(()=>{workflowSessionState.elapsed+=1;if(workflowSessionState.elapsed>=workflowSessionState.limit){workflowSessionStop(true);return;}workflowSessionDrive();},1000);workflowSessionDrive();announce('Art class round has started · '+bridge.summary);}workflowSessionToggle.addEventListener('click',()=>workflowSessionState.phase==='running'?workflowSessionStop():workflowSessionStart());workflowSessionLength.addEventListener('input',()=>{workflowSessionState.limit=Number(workflowSessionLength.value);workflowSessionState.elapsed=Math.min(workflowSessionState.elapsed,workflowSessionState.limit);workflowSessionDrive();});workflowSessionCore.addEventListener('keydown',event=>{if(event.key==='Enter'||event.key===' '){workflowSessionLap('Keyboard Interaction');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Core action · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
</script>
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