ideate-images/task_quality.html at main · hannah-jan/ideate-images · GitHub

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<!doctype html>
<html>
<head>
  <meta charset="utf-8" />
  <title>Image Diversity Choice</title>
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <style>
    body {
      font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
      line-height: 1.45;
      margin: 0;
      padding: 16px;
      max-width: none; /* remove clamp so content can expand within MTurk iframe */
    }
    h2 { text-align: center; }
    .card {
      border: 1px solid #ddd;
      border-radius: 10px;
      padding: 16px;
      background: #fff;
      text-align: center;
      width: min(1800px, 96vw); /* responsive, with a reasonable upper cap */
      margin: 0 auto;
    }
    body {
      font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
      line-height: 1.45;
      margin: 0;
      padding: 16px;
      max-width: none; /* remove clamp so content can expand within MTurk iframe */
    }
    h2 { text-align: center; }
    .card {
      border: 1px solid #ddd;
      border-radius: 10px;
      padding: 16px;
      background: #fff;
      text-align: center;
      width: min(1800px, 96vw); /* responsive, with a reasonable upper cap */
      margin: 0 auto;
    }
    .warn { color:#b45309; background:#fff7ed; border:1px solid #fed7aa; border-radius:8px; padding:10px; margin:10px 0; display:none; }
    .ok   { color:#065f46; background:#ecfdf5; border:1px solid #a7f3d0; border-radius:8px; padding:10px; margin:10px 0; display:none; }
    img {
      display: block;
      width: 100%;
      max-width: 100%;
      height: auto;
      /* keep image viewable without excessive scrolling (best-effort) */
      max-height: calc(96vh - 260px);
      border-radius: 6px;
      border: 1px solid #eee;
      margin: 0 auto;
    }
    .questionBlock { font-size: 1.15em; }
    .radios { display:flex; justify-content:center; gap:20px; margin-top:10px; }
    .btn { appearance:none; border:0; background:#10b981; color:#fff; padding:10px 16px; border-radius:8px; font-weight:600; cursor:pointer; }
    .btn:disabled { opacity:.6; cursor:not-allowed; }
    .lock { color:#b45309; background:#fff7ed; border:1px dashed #fbbf24; border-radius:8px; padding:12px; margin:10px 0; }
    .done { margin-top:14px; display:none; }
  </style>
</head>
<body>
  <h2>Which set of images better matches the shown prompt?</h2>

  <!-- Shown if someone skipped consent -->
  <div id="locked" class="lock" style="display:none;"></div>

  <!-- The actual task -->
  <div id="taskCard" class="card" style="display:none;">
    <div id="timingWarn" class="warn">
      <p>If the image appears small, right-click to open in a new tab.</p>
      <p>Tip: Please take a few seconds to view the image carefully before answering.</p>
    </div>

    <div><img id="compImg" alt="Composite image: left vs right" loading="eager" /></div>

    <div class="questionBlock" style="margin-top:14px;">
      <p><b>Which set of images better matches the prompt shown?</b></p>
      <div class="radios">
        <label><input type="radio" name="choice" value="left" required> Left side</label>
        <label><input type="radio" name="choice" value="right" required> Right side</label>
        <label><input type="radio" name="choice" value="same" required> About the same</label>
      </div>
    </div>

    <div style="margin-top:16px;">
      <button class="btn" id="submitBtn">Submit</button>
    </div>

    <div id="doneMsg" class="done">
      <h3>Thanks — your response was recorded.</h3>
      <p>If this page is not embedded in MTurk, you may now close the tab.</p>
    </div>
  </div>

<script>
  // Force the iframe viewport to the top when this page loads (MTurk iframes can preserve scroll)
  if ('scrollRestoration' in history) history.scrollRestoration = 'manual';
  window.addEventListener('load', () => window.scrollTo(0, 0));

  // Helpers
  const qp = (k,d="") => new URL(location.href).searchParams.get(k) ?? d;

  // Params passed from pis.html
  const assignmentId = qp('assignmentId'); // may be empty in iframe method; MTurk outer page has it
  const workerId     = qp('workerId');
  const hitId        = qp('hitId');
  const trialId      = qp('trial_id');
  const compositeUrl = qp('composite_url');
  const pisUrl       = qp('pis_url');
  const consented    = qp('consented') === '1';
  const tokenParam   = qp('t');
  const tokenStored  = sessionStorage.getItem('consent_token');

  const lockedEl = document.getElementById('locked');
  const taskEl   = document.getElementById('taskCard');

  // Build safe link back to PIS (keeps /ideate-images/ path)
  function backToPISUrl(){
    const u = new URL(window.location.href);
    u.pathname = u.pathname.replace(/[^/]+$/, 'pis_quality.html');
    u.search = '';
    [
      ['assignmentId', assignmentId],
      ['workerId',     workerId],
      ['hitId',        hitId],
      ['trial_id',     trialId],
      ['composite_url',compositeUrl],
      ['pis_url',      pisUrl]
    ].forEach(([k,v]) => { if (v) u.searchParams.set(k, v); });
    return u.toString();
  }

  const unlocked = consented && tokenParam && tokenStored && (tokenParam === tokenStored);
  if (!unlocked){
    lockedEl.style.display = 'block';
    lockedEl.innerHTML = `This page can only be accessed after completing the PIS & consent step.<br>
      <a href="${backToPISUrl()}" style="display:inline-block;margin-top:8px;">Go to PIS & consent</a>`;
  } else {
    // Show task
    taskEl.style.display = 'block';
    // Ensure we start at the top even if the previous page was scrolled
    requestAnimationFrame(() => window.scrollTo(0, 0));

    // Load image
    document.getElementById('compImg').src = compositeUrl;

    // Timing
    const start = Date.now();

    // Submit -> send to parent MTurk page via postMessage
    document.getElementById('submitBtn').addEventListener('click', () => {
      const selected = document.querySelector('input[name="choice"]:checked')?.value;
      if (!selected){ alert('Please select one option.'); return; }

      const end = Date.now();
      const payload = {
        trial_id:           trialId || '',
        composite_url:      compositeUrl || '',
        choice:             selected,
        time_started_ms:    String(start),
        time_submitted_ms:  String(end),
        time_spent_seconds: String(Math.max(0, Math.round((end - start)/1000))),
        consent_token:      tokenParam || '',
        pis_url:            pisUrl || ''
      };

      if (window.parent && window.parent !== window) {
        window.parent.postMessage({ type: 'mturk-submit', payload }, '*');
        // Disable UI and show a small message while parent submits
        document.getElementById('submitBtn').disabled = true;
        const done = document.getElementById('doneMsg'); done.style.display = 'block';
        done.innerHTML = '<h3>Submitting…</h3><p>Please wait.</p>';
      } else {
        // Fallback if opened standalone
        document.getElementById('submitBtn').disabled = true;
        const done = document.getElementById('doneMsg'); done.style.display = 'block';
        done.innerHTML = '<h3>Thanks — your response was recorded.</h3><p>You may close this tab.</p>';
        console.log('Payload (standalone):', payload);
      }
    });
  }
</script>
</body>
</html>