feat: implement 5 new advanced WCAG rules (ColorContrast, DuplicateId, TabindexOrder, AriaRole, IframeTitle)

src/Rules/IframeTitle.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace YakNet\AccessibilityConsole\Rules;
+
+use DOMElement;
+use YakNet\AccessibilityConsole\Core\Severity;
+use YakNet\AccessibilityConsole\Core\Violation;
+use YakNet\AccessibilityConsole\Core\WCAGStandard;
+
+class IframeTitle extends AbstractRule
+{
+    public function getId(): string { return 'WCAG_4_1_2_IFRAME_TITLE'; }
+    public function getDescription(): string { return 'Iframe elements must have a non-empty title attribute to describe their content.'; }
+    public function getStandard(): WCAGStandard { return WCAGStandard::A; }
+    public function getSeverity(): Severity { return Severity::ERROR; }
+
+    public function check(DOMElement $element): ?Violation
+    {
+        if (strtolower($element->tagName) !== 'iframe') {
+            return null;
+        }
+
+        if (!$element->hasAttribute('title') || trim($element->getAttribute('title')) === '') {
+            return $this->createViolation(
+                $element,
+                "Iframe element is missing a descriptive title attribute.",
+                "Add a descriptive title attribute, e.g., title=\"Embedded Map\" or title=\"Video Player\"."
+            );
+        }
+
+        return null;
+    }
+}