Accessibility Clipboard Demo with Assistive Settings
Complete a clipboard operation demo in an accessibility settings scenario: including real content, interactive controls, clear state feedback, and responsive layouts across sizes.
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<title>Accessibility Clipboard Demo with Assistive Settings</title>
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<header class="mast"><div><span class="eyebrow">terminal / clipboard operation demo / INTERMEDIATE</span><h1>Accessibility Clipboard Demo with Assistive Settings</h1><p class="intro">Complete a clipboard operation demo in an accessibility settings scenario: including real content, interactive controls, clear state feedback, and responsive layouts across sizes.</p></div><span class="scenario">Accessibility settings</span></header>
<div class="composition-split"><aside class="split-note"><b>CASE 02</b><span>Master the semantic structure, responsive layout, keyboard operation, and state synchronization of clipboard operation demos.</span></aside><section class="demo" aria-label="Accessible settings clipboard operation demo interactive area"><div class="workflow-guide"><nav class="guide-rail" aria-label="Accessibility Guidance"><span class="eyebrow">Accessibility Settings GUIDE</span><ol><li data-workflow-guide-step="0" aria-current="step"><b>1</b><span>Visual Assistance</span></li><li data-workflow-guide-step="1"><b>2</b><span>Keyboard Assistance</span></li><li data-workflow-guide-step="2"><b>3</b><span>Dynamic Assistance</span></li></ol><div class="guide-actions"><button id="workflowGuideBack" class="action" type="button" disabled>Previous</button><button id="workflowGuideNext" class="action primary" type="button">Complete this step</button></div><div id="workflowGuideProgress" role="progressbar" aria-label="Accessibility plan completion" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div></nav><section id="workflowCore" class="workflow-core guide-core" data-guide-step="0" aria-describedby="workflowGuideInstruction"><p id="workflowGuideInstruction">Please complete the visual assist actions in the main case.</p><!-- 11DZ_CORE_START:browser-media-device-clipboard-demo --><div class="clipboard-desk"><header><span class="eyebrow">CLIPBOARD DESK</span><h2>Accessibility Settings Copy Workspace</h2><output id="clipboardPermission">Request clipboard access only after clicking</output></header><label class="clipboard-editor">Content to be copied<textarea id="clipboardText" rows="6">Accessibility settings: please confirm the action log, owner, and next step.</textarea><span id="clipboardCount">0 bytes</span></label><div class="clipboard-actions"><button id="clipboardCopy" class="action primary" type="button">Copy text</button><button id="clipboardSelect" class="action" type="button" data-core-bridge="browser-media-device-clipboard-demo">Manually select</button><button id="clipboardClear" class="action" type="button">Clear Editing Area</button></div><aside><h3>This page copies records</h3><ul id="clipboardLedger"><li>Copy not yet performed</li></ul></aside></div><!-- 11DZ_CORE_END --></section><aside class="guide-evidence"><details id="workflowGuideDetails"><summary>View acceptance requirements</summary><ul><li>Visual assistance requires a visible state change</li><li>Keyboard assistance requires a visible state change</li><li>Dynamic assistive tech requires one visible state change</li></ul></details><form id="workflowGuideEvidenceForm"><label>This step evidence<textarea id="workflowGuideEvidence" rows="3" placeholder="Record the observed state"></textarea></label><input class="action" type="submit" value="Save evidence"></form><output id="workflowGuideSummary">0 / 3 Steps Complete</output></aside></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-clipboard-demo */
const clipboardText=document.querySelector('#clipboardText');const clipboardLedger=[];function updateClipboardCount(){document.querySelector('#clipboardCount').textContent=clipboardText.value.length+' Characters';}function recordClipboard(kind){clipboardLedger.unshift({kind,length:clipboardText.value.length,at:new Date()});clipboardLedger.splice(4);document.querySelector('#clipboardLedger').replaceChildren(...clipboardLedger.map(entry=>{const item=document.createElement('li');item.textContent=entry.kind+' · '+entry.length+' Text · '+entry.at.toLocaleTimeString();return item;}));}document.querySelector('#clipboardCopy').addEventListener('click',async()=>{if(!clipboardText.value){announce('Please enter the content to copy first');return;}try{if(!navigator.clipboard?.writeText)throw new Error('unsupported');await navigator.clipboard.writeText(clipboardText.value);document.querySelector('#clipboardPermission').textContent='Write successful';recordClipboard('System clipboard');announce('The text has been written to the clipboard');}catch{clipboardText.focus();clipboardText.select();document.querySelector('#clipboardPermission').textContent='The browser refused to write; content selected';recordClipboard('Manual rollback');announce('Could not copy automatically; text selected for manual copying');}});document.querySelector('#clipboardSelect').addEventListener('click',()=>{clipboardText.focus();clipboardText.select();recordClipboard('Selected content');announce('Selected editor content');});document.querySelector('#clipboardClear').addEventListener('click',()=>{clipboardText.value='';updateClipboardCount();clipboardText.focus();announce('Copy editor area has been cleared');});clipboardText.addEventListener('input',updateClipboardCount);updateClipboardCount();
/* 11DZ_CORE_SCRIPT_END */
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workflowBridgeReset();
</script>
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