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\ No newline at end of file diff --git a/src/alt-text-checker.js b/src/alt-text-checker.js index aa48df2..5071c57 100644 --- a/src/alt-text-checker.js +++ b/src/alt-text-checker.js @@ -71,12 +71,16 @@ // src ist die stabilste Kennung eines Bildes über mehrere Seitenaufrufe hinweg if (img.tagName === 'IMG') return img.currentSrc || img.src || null; - // Nicht--Elemente mit role="img" (z.B. Inline-) haben kein src. - // Fallback: umgebender Link oder aria-label als Kennung. + // Nicht--Elemente mit role="img" (z.B. Inline- oder
) + // haben kein src. Fallback: umgebender Link, aria-label, oder als letzte + // Möglichkeit die class (z.B. bei reinen Icon-Fonts/CSS-Icons ohne jeden + // Text). Der instanceIdentifier()-Zähler unterscheidet danach weiterhin + // gleich aussehende Duplikate voneinander. const link = img.closest ? img.closest('a[href]') : null; if (link && link.href) return `role-img:${link.href}`; const label = img.getAttribute('aria-label'); if (label) return `role-img:${label}`; + if (img.className) return `role-img:class:${img.className}`; return null; } @@ -359,6 +363,7 @@ const labelledBy = resolveIdRefs('aria-labelledby', img); const hasTitle = img.hasAttribute('title'); const hasLongdesc = img.hasAttribute('longdesc'); + const isAriaHidden = img.getAttribute('aria-hidden') === 'true'; const hasAccessibleName = hasAriaLabel || describedBy !== null || labelledBy !== null; const linkPrefix = isInsideLink(img) ? 'Bild in Link: ' : ''; @@ -373,6 +378,14 @@ const isDecorative = altValue.trim().length === 0; segments = [linkPrefix, { code: `alt="${altValue}"` }, ...extras]; kind = isDecorative ? 'warning' : 'success'; + } else if (isAriaHidden && !hasAccessibleName) { + // aria-hidden="true" entfernt das Element bereits vollständig aus dem + // Accessibility-Tree – für Screenreader ist es so, als gäbe es kein + // Bild. Das ist eine gültige Alternative zu alt="" bei dekorativen + // Elementen (v.a. bei role="img" auf Nicht--Elementen), daher + // hier keine Fehlermeldung, sondern dieselbe Einstufung wie alt="". + segments = [linkPrefix, { code: 'aria-hidden="true"' }, ...extras]; + kind = 'warning'; } else if (hasAccessibleName) { const resolvedName = hasAriaLabel ? img.getAttribute('aria-label') : (labelledBy || describedBy); segments = [