Photo Library Help Popover
Complete a help popover in a photo library scenario: includes real content, actionable controls, clear state feedback, and responsive layouts.
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Photo Library Help Popover</title>
<style>
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<body data-aesthetic="minimal" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">minimal / Help Popover / INTERMEDIATE</span><h1>Photo Library Help Popover</h1><p class="intro">Complete a help popover in a photo library scenario: includes real content, actionable controls, clear state feedback, and responsive layouts.</p></div><span class="scenario">Photo Library</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="Photo Library Help Popover Interaction Area"><div class="workflow-compare"><form id="workflowCompareControls" class="compare-controls"><fieldset><legend>Reference Channel</legend><label><input type="radio" name="workflowChannel" value="A" checked>A · Original Version</label><label><input type="radio" name="workflowChannel" value="B">B · Revised Edition</label></fieldset><label>Filter Strength Weight<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 %</output></label><label><input id="workflowCompareFreeze" type="checkbox">Freeze current version</label><button id="workflowCompareCapture" class="action primary" type="button">Sample and Save Versions</button><ol id="workflowCompareShelf" aria-label="Version Sampling Record"></ol></form><section class="compare-stage"><header><span class="eyebrow">Photo library COMPARE</span><h2>Photo version side-by-side comparison</h2><output id="workflowCompareLive">Version A waiting for sampling</output></header><section id="workflowCore" class="workflow-core compare-core" data-compare-channel="A" style="--compare-split:50%"><!-- 11DZ_CORE_START:overlays-feedback-help-popover --><section class="help-popover-demo"><div class="help-document"><span class="eyebrow">HELP POPOVER</span><h2>Photo Library Setup Instructions</h2><p>Help content opens in place from the trigger button without interrupting the current task.</p><div class="help-setting"><div><strong>Photo library favorites</strong><small>Keep the most recent configuration</small></div><button id="helpPopoverTrigger" type="button" aria-expanded="false" aria-controls="helpPopover" data-core-bridge="overlays-feedback-help-popover">What is this?</button><label class="help-toggle"><input type="checkbox" checked aria-label="Enable Photo Library Favorites"><span aria-hidden="true"></span></label></div></div><div id="helpPopover" class="help-popover" popover role="note"><header><span>QUICK HELP</span><button id="helpPopoverClose" type="button" aria-label="Close Help">×</button></header><h3>Photo library favorites</h3><p>When enabled, preferences are saved only in the current browser and no network requests are made.</p><a href="#help-detail">View full instructions</a></div><aside class="help-tip"><span aria-hidden="true">?</span><p>Supports Popover API; older browsers automatically fall back to a switchable panel.</p></aside></section><!-- 11DZ_CORE_END --></section></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>Photo Library / GALLERY 03</strong></figcaption></figure>
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<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:overlays-feedback-help-popover */
const helpPopover=document.querySelector('#helpPopover');const helpPopoverTrigger=document.querySelector('#helpPopoverTrigger');const helpPopoverClose=document.querySelector('#helpPopoverClose');const supportsPopover=typeof helpPopover.showPopover==='function';helpPopover.hidden=!supportsPopover;function helpIsOpen(){return supportsPopover?helpPopover.matches(':popover-open'):!helpPopover.hidden;}function setHelpPopover(open){if(supportsPopover){if(open&&!helpIsOpen())helpPopover.showPopover();if(!open&&helpIsOpen())helpPopover.hidePopover();}else helpPopover.hidden=!open;helpPopoverTrigger.setAttribute('aria-expanded',String(open));announce(open?'Help popover expanded':'Help popover closed');}helpPopoverTrigger.addEventListener('click',()=>setHelpPopover(!helpIsOpen()));helpPopoverClose.addEventListener('click',()=>{setHelpPopover(false);helpPopoverTrigger.focus();});helpPopover.addEventListener('toggle',event=>{helpPopoverTrigger.setAttribute('aria-expanded',String(event.newState==='open'));});document.querySelector('.help-popover a').addEventListener('click',event=>{event.preventDefault();announce('Full details located');});document.addEventListener('keydown',event=>{if(event.key==='Escape'&&helpIsOpen()){setHelpPopover(false);helpPopoverTrigger.focus();}});
/* 11DZ_CORE_SCRIPT_END */
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const workflowCompareCore=document.querySelector('#workflowCore');const workflowCompareWeight=document.querySelector('#workflowCompareWeight');const workflowCompareState={channel:'A',weight:50,frozen:false,snapshots:[]};function workflowCompareFingerprint(){const controls=[...workflowCompareCore.querySelectorAll('input,select,textarea')];const outputs=[...workflowCompareCore.querySelectorAll('output,[role="status"],strong')].map(node=>node.textContent.trim()).filter(Boolean);return {controlValues:controls.map(control=>control.type==='checkbox'||control.type==='radio'?control.checked:control.value),summary:outputs.slice(0,4).join(' / '),nodes:workflowCompareCore.querySelectorAll('*').length};}function workflowCompareDrive(){workflowCompareCore.dataset.compareChannel=workflowCompareState.channel;workflowCompareCore.style.setProperty('--compare-split',workflowCompareState.weight+'%');document.querySelector('#workflowCompareWeightValue').textContent=workflowCompareState.weight+' %';document.querySelector('#workflowCompareLive').textContent=workflowCompareState.channel+' Version · '+workflowCompareState.weight+' %'+(workflowCompareState.frozen?' · Frozen':'');announce('Photo version is being viewed '+workflowCompareState.channel+' Version');}function workflowCompareCapture(source){const bridge=workflowBridgeActivate();const snapshot={...workflowCompareFingerprint(),channel:workflowCompareState.channel,weight:workflowCompareState.weight,source,bridge:bridge.summary};workflowCompareState.snapshots.push(snapshot);const item=document.createElement('li');item.innerHTML='<b>'+snapshot.channel+'</b><span>'+(snapshot.summary||snapshot.bridge)+'</span><small>'+snapshot.weight+' % · '+snapshot.bridge+'</small>';document.querySelector('#workflowCompareShelf').prepend(item);announce('sampled '+snapshot.channel+' Save and keep version · '+bridge.summary);}document.querySelectorAll('[name="workflowChannel"]').forEach(input=>input.addEventListener('change',()=>{workflowCompareState.channel=input.value;workflowCompareDrive();}));workflowCompareWeight.addEventListener('input',()=>{workflowCompareState.weight=Number(workflowCompareWeight.value);workflowCompareDrive();});document.querySelector('#workflowCompareFreeze').addEventListener('change',event=>{workflowCompareState.frozen=event.currentTarget.checked;workflowCompareDrive();});document.querySelector('#workflowCompareCapture').addEventListener('click',()=>workflowCompareCapture('Button Sampling'));workflowCompareCore.addEventListener('dblclick',()=>workflowCompareCapture('Main view double-click'));workflowCompareDrive();
workflowBridgeReset();
</script>
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