门诊遥控台页面可见性记录
在门诊遥控台场景中完成页面可见性记录：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下：
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>门诊遥控台页面可见性记录</title>
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.panel{padding:16px;border:3px double var(--accent);background:var(--paper)}.stack{display:grid;gap:14px}.row{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;gap:10px;overflow:auto}.action{padding:10px 15px;border:1px solid var(--accent);background:transparent;font-family:Didot,serif;letter-spacing:.06em}.action.primary,.action.is-active{color:var(--paper);background:var(--ink)}.metric{font-family:Didot,serif;font-size:clamp(36px,8vw,74px);letter-spacing:.04em}.status{min-height:24px;padding:9px;border-inline:1px solid var(--accent);text-align:center}.muted{line-height:1.8}.chip{padding:5px 14px;border-inline:1px solid var(--accent);letter-spacing:.1em}.meter{height:5px;background:var(--line)}.meter>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--secondary))}
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<body data-aesthetic="monochrome" data-composition="control-deck">
<main class="page">
<header class="mast"><div><span class="eyebrow">monochrome / 页面可见性记录 / BEGINNER</span><h1>门诊遥控台页面可见性记录</h1><p class="intro">在门诊遥控台场景中完成页面可见性记录：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">门诊遥控台</span></header>
<div class="composition-deck"><div class="deck-bar"><span>CONTROL DECK · 04</span><span>页面可见性记录</span><span class="deck-lights" aria-hidden="true"><i></i><i></i><i></i></span></div><section class="demo" aria-label="门诊遥控台页面可见性记录交互区域"><div id="workflowSpatial" class="workflow-spatial" style="--spatial-width:64%;--spatial-zoom:1"><header><div><span class="eyebrow">门诊遥控台 SPATIAL CANVAS</span><h2>门诊遥控台调整台</h2></div><label>检测项目占比<input id="workflowSpatialWidth" type="range" min="38" max="82" value="64"><output id="workflowSpatialWidthValue">64%</output></label><label>内容缩放<input id="workflowSpatialZoom" type="range" min="80" max="120" value="100"><output id="workflowSpatialZoomValue">100%</output></label></header><div class="spatial-grid"><section id="workflowCore" class="workflow-core spatial-core"><!-- 11DZ_CORE_START:browser-media-device-page-visibility --><div class="visibility-journal"><header><span class="eyebrow">VISIBILITY JOURNAL</span><h2>门诊遥控台可见性日志</h2><output id="visibilityClock">00:00</output><p id="visibilityState">正在观察页面状态</p></header><section><div id="visibilityMeter" role="progressbar" aria-label="本次可见时间" aria-valuemin="0" aria-valuemax="60" aria-valuenow="0"><i></i></div><dl><div><dt>可见秒数</dt><dd id="visibilitySeconds">0</dd></div><div><dt>隐藏次数</dt><dd id="visibilityHiddenCount">0</dd></div><div><dt>当前状态</dt><dd id="visibilityNative">visible</dd></div></dl><button id="visibilityPause" class="action primary" type="button" data-core-bridge="browser-media-device-page-visibility">暂停观察</button><button id="visibilityReset" class="action" type="button">重置日志</button></section><aside><h3>状态切换</h3><ul id="visibilityEvents"><li>观察已开始</li></ul></aside></div><!-- 11DZ_CORE_END --></section><input id="workflowSpatialHandle" class="spatial-handle" type="button" value="↔" aria-label="拖动调整主案例预览宽度"><aside><strong>门诊遥控台权限检查</strong><p>门诊遥控台能力记录与门诊遥控台本地保存会随画布尺寸重新编排。</p><output id="workflowSpatialStatus">宽度 64%，缩放 100%</output><input id="workflowSpatialApply" class="action primary" type="button" value="记录能力"></aside></div></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:browser-media-device-page-visibility */
const visibilityData={seconds:0,hidden:0,paused:false,events:[]};function formatVisibleTime(value){return String(Math.floor(value/60)).padStart(2,'0')+':'+String(value%60).padStart(2,'0');}function renderVisibility(){document.querySelector('#visibilityClock').textContent=formatVisibleTime(visibilityData.seconds);document.querySelector('#visibilitySeconds').textContent=String(visibilityData.seconds);document.querySelector('#visibilityHiddenCount').textContent=String(visibilityData.hidden);document.querySelector('#visibilityNative').textContent=document.visibilityState;document.querySelector('#visibilityState').textContent=visibilityData.paused?'观察已暂停':document.hidden?'页面当前隐藏':'页面当前可见';const meter=document.querySelector('#visibilityMeter');meter.setAttribute('aria-valuenow',String(Math.min(60,visibilityData.seconds)));meter.querySelector('i').style.width=Math.min(100,visibilityData.seconds/60*100)+'%';document.querySelector('#visibilityEvents').replaceChildren(...visibilityData.events.slice(0,6).map(entry=>{const item=document.createElement('li');item.textContent=entry;return item;}));}function logVisibility(label){visibilityData.events.unshift(new Date().toLocaleTimeString()+' · '+label);renderVisibility();}document.addEventListener('visibilitychange',()=>{if(document.hidden)visibilityData.hidden+=1;logVisibility(document.visibilityState);announce('页面状态变为 '+document.visibilityState);});setInterval(()=>{if(!visibilityData.paused&&!document.hidden){visibilityData.seconds+=1;renderVisibility();}},1000);document.querySelector('#visibilityPause').addEventListener('click',event=>{visibilityData.paused=!visibilityData.paused;event.currentTarget.textContent=visibilityData.paused?'继续观察':'暂停观察';logVisibility(visibilityData.paused?'手动暂停':'继续观察');});document.querySelector('#visibilityReset').addEventListener('click',()=>{visibilityData.seconds=0;visibilityData.hidden=0;visibilityData.events=[];logVisibility('日志已重置');announce('可见性日志已重置');});logVisibility('观察已开始');
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"browser-media-device-page-visibility","selector":"[data-core-bridge=\"browser-media-device-page-visibility\"]","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+' · 核心版本 '+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 workflowSpatial=document.querySelector('#workflowSpatial');const workflowSpatialCore=document.querySelector('#workflowCore');const workflowSpatialWidth=document.querySelector('#workflowSpatialWidth');const workflowSpatialZoom=document.querySelector('#workflowSpatialZoom');const workflowSpatialHandle=document.querySelector('#workflowSpatialHandle');const workflowSpatialState={width:64,zoom:1,dragging:false};function workflowSpatialDrive(){workflowSpatial.style.setProperty('--spatial-width',workflowSpatialState.width+'%');workflowSpatial.style.setProperty('--spatial-zoom',String(workflowSpatialState.zoom));workflowSpatialWidth.value=String(workflowSpatialState.width);workflowSpatialZoom.value=String(Math.round(workflowSpatialState.zoom*100));document.querySelector('#workflowSpatialWidthValue').textContent=workflowSpatialState.width+'%';document.querySelector('#workflowSpatialZoomValue').textContent=Math.round(workflowSpatialState.zoom*100)+'%';document.querySelector('#workflowSpatialStatus').textContent='宽度 '+workflowSpatialState.width+'%，缩放 '+Math.round(workflowSpatialState.zoom*100)+'%';announce('门诊遥控台画布已重排');}workflowSpatialWidth.addEventListener('input',()=>{workflowSpatialState.width=Number(workflowSpatialWidth.value);workflowSpatialDrive();});workflowSpatialZoom.addEventListener('input',()=>{workflowSpatialState.zoom=Number(workflowSpatialZoom.value)/100;workflowSpatialDrive();});workflowSpatialHandle.addEventListener('pointerdown',event=>{workflowSpatialState.dragging=true;workflowSpatialHandle.setPointerCapture(event.pointerId);});workflowSpatialHandle.addEventListener('pointermove',event=>{if(!workflowSpatialState.dragging)return;const rect=workflowSpatial.getBoundingClientRect();workflowSpatialState.width=Math.max(38,Math.min(82,Math.round((event.clientX-rect.left)/rect.width*100)));workflowSpatialDrive();});workflowSpatialHandle.addEventListener('pointerup',event=>{workflowSpatialState.dragging=false;workflowSpatialHandle.releasePointerCapture(event.pointerId);});workflowSpatialHandle.addEventListener('wheel',event=>{event.preventDefault();workflowSpatialState.zoom=Math.max(.8,Math.min(1.2,workflowSpatialState.zoom+(event.deltaY<0?.05:-.05)));workflowSpatialDrive();},{passive:false});workflowSpatialHandle.addEventListener('keydown',event=>{if(!['ArrowLeft','ArrowRight'].includes(event.key))return;event.preventDefault();workflowSpatialState.width=Math.max(38,Math.min(82,workflowSpatialState.width+(event.key==='ArrowRight'?2:-2)));workflowSpatialDrive();});document.querySelector('#workflowSpatialApply').addEventListener('click',()=>{const bridge=workflowBridgeActivate();document.querySelector('#workflowSpatialStatus').textContent='已记录能力 · 宽度 '+workflowSpatialState.width+'%，缩放 '+Math.round(workflowSpatialState.zoom*100)+'% · '+bridge.summary;announce(document.querySelector('#workflowSpatialStatus').textContent);});workflowSpatialDrive();
workflowBridgeReset();
</script>
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