Capacités des médias et des appareils du navigateur

Indicateur d’état de mise en réseau de l’espace de démonstration

Dans le contexte d’un espace de démonstration, mettre en place l’indicateur d’état de connexion : contenu réel, contrôles actionnables, retour d’état clair et disposition adaptative selon la taille de l’écran.

Capacités des médias et des appareils du navigateurIndicateur d’état de connexionHTMLCSSBrowser API
Après activation de JavaScript, ce cas peut être modifié, exécuté et enregistré. Code source fixe ci-dessous :
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  <main class="page">
    <header class="mast"><div><span class="eyebrow">minimal / indicateur d’état de connexion / INTERMEDIATE</span><h1>Indicateur d’état de mise en réseau de l’espace de démonstration</h1><p class="intro">Dans le contexte d’un espace de démonstration, mettre en place l’indicateur d’état de connexion : contenu réel, contrôles actionnables, retour d’état clair et disposition adaptative selon la taille de l’écran.</p></div><span class="scenario">Espace de démonstration</span></header>
    <div class="composition-deck"><div class="deck-bar"><span>CONTROL DECK · 04</span><span>Indicateur d’état de connexion</span><span class="deck-lights" aria-hidden="true"><i></i><i></i><i></i></span></div><section class="demo" aria-label="Zone interactive d’indication de l’état de connexion du réseau dans l’espace de démonstration"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Espace de démonstration SESSION</span><h2>Tableau de chronométrage de démonstration</h2></div><output id="workflowSessionClock">00:45</output><label>Durée du tour<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">Démarrer la présentation</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Progression de la minuterie de démonstration" 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:browser-media-device-network-state --><div class="network-console"><header><span class="eyebrow">NETWORK EVENTS</span><h2>Poste d’état de connexion de l’espace de démonstration</h2><div id="networkLamp" aria-hidden="true"></div><output id="networkStatus">Détection en cours</output></header><section><dl><div><dt>Le navigateur détermine</dt><dd id="networkNative">—</dd></div><div><dt>Type de connexion</dt><dd id="networkType">Non public</dd></div><div><dt>Économiser des données</dt><dd id="networkSaveData">Non public</dd></div></dl><label><input id="networkDrill" type="checkbox" data-core-bridge="browser-media-device-network-state">Lancer la vue de simulation hors ligne</label><button id="networkCheckpoint" class="action primary" type="button">Point de contrôle de l’état de l’enregistrement</button></section><aside><h3>Chronologie de l’événement</h3><ol id="networkTimeline"><li>attendre les événements online / offline</li></ol></aside></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 points de contrôle interactifs</strong><ol id="workflowSessionLaps" aria-label="Journal de ronde"></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:browser-media-device-network-state */
const networkEvents=[];const networkConnection=navigator.connection||navigator.mozConnection||navigator.webkitConnection;function networkSnapshot(source){const drilled=document.querySelector('#networkDrill').checked;const online=navigator.onLine&&!drilled;document.querySelector('#networkLamp').classList.toggle('is-online',online);document.querySelector('#networkStatus').textContent=online?'Connexion disponible':drilled?'Exercice hors ligne':'Connexion interrompue';document.querySelector('#networkNative').textContent=navigator.onLine?'online':'offline';document.querySelector('#networkType').textContent=networkConnection?.effectiveType||'Non publié dans le navigateur';document.querySelector('#networkSaveData').textContent=networkConnection?.saveData?'Activé':'Non activé ou inconnu';if(source){networkEvents.unshift({source,state:online?'En ligne':'Hors ligne',time:new Date()});networkEvents.splice(6);document.querySelector('#networkTimeline').replaceChildren(...networkEvents.map(entry=>{const item=document.createElement('li');item.textContent=entry.time.toLocaleTimeString()+' · '+entry.source+' · '+entry.state;return item;}));announce('État du réseau enregistré :'+(online?'En ligne':'Hors ligne'));}}addEventListener('online',()=>networkSnapshot('événement en ligne'));addEventListener('offline',()=>networkSnapshot('événement offline'));networkConnection?.addEventListener?.('change',()=>networkSnapshot('Modification des paramètres de connexion'));document.querySelector('#networkDrill').addEventListener('change',()=>networkSnapshot('commutateur d’exercice'));document.querySelector('#networkCheckpoint').addEventListener('click',()=>networkSnapshot('Point de contrôle manuel'));networkSnapshot();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"browser-media-device-network-state","selector":"[data-core-bridge=\"browser-media-device-network-state\"]","mode":"toggle","key":" "};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+' · Version de base '+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.setAttribute('aria-keyshortcuts',workflowBridgeSpec.key===' '?'Space':workflowBridgeSpec.key);const workflowBridgeToggleKeyMatches=event=>event.key===workflowBridgeSpec.key||event.key==='Spacebar'||event.code==='Space';workflowBridgeControl.addEventListener('keydown',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();});workflowBridgeControl.addEventListener('keyup',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();workflowBridgeControl.click();});workflowBridgeControl.addEventListener("change",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+' points de contrôle d’interaction';}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?'Recommencer':'Tour suivant';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Tour de chronométrage de démonstration terminée':'La ronde est suspendue');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Tour de pause';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('Le tour de chronométrage de la présentation a commencé · '+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('Opérations au clavier');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Opération principale · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
  </script>
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