release: v3.1.0 premium smart core engines and 14 new accessibility rules

src/Rules/ImageAltLong.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace YakNet\AccessibilityConsole\Rules;
+
+use DOMElement;
+use YakNet\AccessibilityConsole\Core\Severity;
+use YakNet\AccessibilityConsole\Core\Violation;
+use YakNet\AccessibilityConsole\Core\WCAGStandard;
+
+class ImageAltLong extends AbstractRule
+{
+    public function getId(): string { return 'WCAG_1_1_1_ALT_LONG'; }
+    public function getDescription(): string { return 'Image alt text should be concise (less than 150 characters).'; }
+    public function getStandard(): WCAGStandard { return WCAGStandard::A; }
+    public function getSeverity(): Severity { return Severity::WARNING; }
+    public function getLevel(): int { return 3; }
+
+    public function check(DOMElement $element): ?Violation
+    {
+        if (strtolower($element->tagName) !== 'img') {
+            return null;
+        }
+
+        if (!$element->hasAttribute('alt')) {
+            return null;
+        }
+
+        $alt = trim($element->getAttribute('alt'));
+        if (mb_strlen($alt) > 150) {
+            return $this->createViolation(
+                $element,
+                $this->getDescription(),
+                'Shorten the alt text description to be under 150 characters, and move longer explanations to standard page content.'
+            );
+        }
+
+        return null;
+    }
+}