Navegação em árvore da base de conhecimento
Conclua a navegação em árvore em um cenário de base de conhecimento: inclui conteúdo real, controles operáveis, feedback de estado claro e layout responsivo a diferentes tamanhos.
É possível editar, executar e salvar este exemplo após ativar JavaScript. O código-fonte fixo é o seguinte:
<!doctype html>
<html lang="pt-BR" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Navegação em árvore da base de conhecimento</title>
<style>
:root { --ink:#18314f; --paper:#f7f8f2; --accent:#ff6b5e; --secondary:#71c9b5; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
* { box-sizing:border-box; }
html { min-width:320px; background:var(--paper); }
body { min-height:100vh; margin:0; overflow-x:hidden; color:var(--ink); font-family:"DIN Alternate","Arial Narrow",sans-serif; background:repeating-linear-gradient(135deg,color-mix(in srgb,var(--ink) 5%,transparent) 0 1px,transparent 1px 18px),var(--paper); }
button,input,select,textarea { color:inherit; font:inherit; }
button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
@media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
.mast{display:flex;justify-content:space-between;border-bottom:6px solid var(--ink);padding-bottom:18px;gap:20px;align-items:flex-end;margin:0 0 22px}.page{width:min(1240px,calc(100% - 28px));margin:auto;padding:34px 0 70px}.scenario{padding:8px 12px;border:2px solid var(--ink);font:900 12px/1 ui-monospace,monospace}.mast h1{font-family:"DIN Condensed","Arial Narrow",sans-serif;font-weight:900;text-transform:uppercase;font-size:clamp(44px,10vw,104px);letter-spacing:-.02em;max-width:1000px;margin:0;line-height:.82}.intro{max-width:720px;font-family:"Arial Narrow",sans-serif;line-height:1.5}.eyebrow{display:inline-block;padding:6px 9px;color:var(--paper);background:var(--accent);font:900 10px/1 ui-monospace,monospace;letter-spacing:.12em}.demo{border-radius:3px;box-shadow:10px 10px 0 var(--accent);position:relative;min-height:400px;overflow:hidden;padding:32px;background:var(--paper)}@media(max-width:700px){.mast{display:grid;grid-template-columns:1fr}.page{width:calc(100% - 16px);padding-top:16px}.demo{padding:14px}}
.panel{padding:20px;border:1px dashed var(--secondary);border-radius:8px;background:color-mix(in srgb,var(--paper) 92%,#000)}.stack{display:grid;gap:10px}.row{display:flex;flex-wrap:wrap;gap:7px}.action{min-height:40px;padding:8px 12px;border:1px solid var(--secondary);border-radius:5px;color:var(--ink);background:transparent;font:700 12px/1 ui-monospace,monospace}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.status{min-height:22px;color:var(--secondary);font:700 12px/1.5 ui-monospace,monospace}.status::before{content:"status: "}.metric{font:800 clamp(28px,6vw,56px)/1 ui-monospace,monospace}.muted{opacity:.64;font-family:ui-monospace,monospace}.meter{height:8px;background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 10px)}.meter>i{display:block;height:100%;background:var(--secondary)}.chip{padding:4px 7px;border:1px solid var(--secondary);font:700 10px/1 ui-monospace,monospace}
.composition-studio{display:grid;gap:14px}.studio-ruler{display:flex;justify-content:space-between;padding:0 4px;color:color-mix(in srgb,var(--ink) 55%,transparent);font:700 11px/1 ui-monospace,monospace;letter-spacing:.14em}.studio-ruler::before{content:"01 / WORKING PROTOTYPE"}.studio-ruler::after{content:"360 · 768 · 1440"}.composition-studio .demo::after{content:"";position:absolute;right:18px;bottom:18px;width:24px;height:24px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);pointer-events:none}
.tree-shell{display:grid;grid-template-columns:minmax(210px,.7fr) minmax(280px,1.3fr);gap:28px}.tree-shell>header{padding:26px;border-right:1px solid var(--line)}.tree-root,.tree-root ul{display:grid;gap:6px;padding:0;margin:0;list-style:none}.tree-root ul{padding:5px 0 8px 31px;border-left:1px dashed var(--line)}.tree-root button,.tree-root a{display:flex;width:100%;gap:9px;padding:11px 13px;border:0;border-radius:9px;color:inherit;text-align:left;text-decoration:none;background:transparent}.tree-root button:hover,.tree-root a:hover{background:color-mix(in srgb,var(--secondary) 22%,transparent)}.tree-root button[aria-expanded="true"] span{transform:rotate(90deg)}@media(max-width:660px){.tree-shell{grid-template-columns:1fr}.tree-shell>header{border-right:0;border-bottom:1px solid var(--line)}}.workflow-session{display:grid;gap:14px}.session-command{display:grid;grid-template-columns:1fr auto minmax(170px,.45fr) auto;gap:16px;align-items:end;padding:18px;border-block:4px double var(--ink)}.session-command h2{margin:.2em 0}.session-command output{font:900 clamp(28px,5vw,54px)/1 ui-monospace,monospace}.session-command label{display:grid;grid-template-columns:1fr auto;gap:7px;font-size:12px}.session-command input{grid-column:1/-1;width:100%}#workflowSessionProgress{height:12px;overflow:hidden;border-radius:2px;background:var(--line)}#workflowSessionProgress i{display:block;width:0;height:100%;background:var(--accent)}.session-stage{min-width:0;transition:filter .25s,transform .25s}.session-stage[data-session-phase="running"]{transform:translateY(-3px)}.session-stage[data-session-phase="paused"]{filter:grayscale(.65)}.session-stage[data-session-phase="complete"]{filter:contrast(.78);opacity:.72}.session-log{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start}.session-log ol{display:flex;flex-wrap:wrap;gap:7px;padding:0;margin:0;list-style:none}.session-log li{padding:5px 8px;border:1px solid var(--line);font-size:12px}@media(max-width:900px){.session-stage{order:-1}.session-command{grid-template-columns:1fr auto}.session-command label{grid-column:1/-1}.session-log{grid-template-columns:1fr}}
</style>
</head>
<body data-aesthetic="industrial" data-composition="studio">
<main class="page">
<header class="mast"><div><span class="eyebrow">industrial / navegação em árvore / BEGINNER</span><h1>Navegação em árvore da base de conhecimento</h1><p class="intro">Conclua a navegação em árvore em um cenário de base de conhecimento: inclui conteúdo real, controles operáveis, feedback de estado claro e layout responsivo a diferentes tamanhos.</p></div><span class="scenario">Base de conhecimento</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="área interativa de navegação em árvore da base de conhecimento"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Base de conhecimento SESSION</span><h2>Cronômetro da trilha do conhecimento</h2></div><output id="workflowSessionClock">00:45</output><label>Duração da rodada<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>s</span></label><button id="workflowSessionToggle" class="action primary" type="button">Começar a explorar o conhecimento</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Progresso do caminho de conhecimento" 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:navigation-menus-tree-navigation --><div class="tree-shell"><header><span class="eyebrow">TREE NAVIGATION</span><h2>Índice da base de conhecimento</h2><p>Use as teclas de seta esquerda e direita para expandir ou recolher o ramo atual.</p></header><nav aria-label="índice em árvore"><ul class="tree-root" role="tree"><li role="none"><button id="treeItem0" type="button" role="treeitem" aria-expanded="true" aria-controls="treeGroup0" data-core-bridge="navigation-menus-tree-navigation"><span aria-hidden="true">▸</span>Favoritos da base de conhecimento</button><ul id="treeGroup0" role="group"><li role="none"><a role="treeitem" href="#tree-0-1">Favoritos da base de conhecimento · 1</a></li><li role="none"><a role="treeitem" href="#tree-0-2">Favoritos da base de conhecimento · 2</a></li></ul></li><li role="none"><button id="treeItem1" type="button" role="treeitem" aria-expanded="false" aria-controls="treeGroup1"><span aria-hidden="true">▸</span>Visão geral da base de conhecimento</button><ul id="treeGroup1" role="group" hidden><li role="none"><a role="treeitem" href="#tree-1-1">Visão geral da base de conhecimento · 1</a></li><li role="none"><a role="treeitem" href="#tree-1-2">Visão geral da base de conhecimento · 2</a></li></ul></li><li role="none"><button id="treeItem2" type="button" role="treeitem" aria-expanded="false" aria-controls="treeGroup2"><span aria-hidden="true">▸</span>Plano da base de conhecimento</button><ul id="treeGroup2" role="group" hidden><li role="none"><a role="treeitem" href="#tree-2-1">Plano da base de conhecimento · 1</a></li><li role="none"><a role="treeitem" href="#tree-2-2">Plano da base de conhecimento · 2</a></li></ul></li></ul></nav></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 pontos de verificação de interação</strong><ol id="workflowSessionLaps" aria-label="Registro da rodada"></ol></footer></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:navigation-menus-tree-navigation */
const treeButtons=[...document.querySelectorAll('.tree-root button[role="treeitem"]')];function setTreeExpanded(button,expanded){button.setAttribute('aria-expanded',String(expanded));document.querySelector('#'+button.getAttribute('aria-controls')).hidden=!expanded;announce(button.textContent.trim()+(expanded?'Expandido':'Recolhido'));}treeButtons.forEach(button=>{button.addEventListener('click',()=>setTreeExpanded(button,button.getAttribute('aria-expanded')!=='true'));button.addEventListener('keydown',event=>{if(!['ArrowRight','ArrowLeft'].includes(event.key))return;event.preventDefault();setTreeExpanded(button,event.key==='ArrowRight');});});document.querySelectorAll('.tree-root a').forEach(link=>link.addEventListener('click',event=>{event.preventDefault();announce('Selecionado '+link.textContent);}));
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"navigation-menus-tree-navigation","selector":"[data-core-bridge=\"navigation-menus-tree-navigation\"]","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+' · versão principal '+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+' pontos de verificação de interação';}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?'Reiniciar':'Continuar rodada';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Ciclo da trilha de conhecimento concluído':'A rodada foi pausada');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Pausar rodada';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('A jornada do conhecimento começou · '+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('operação por teclado');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Ação principal · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
</script>
</body>
</html>