Added setAttributeNode, setAttributeNodeNS support for id attributes

lib/DOM/DOMException.php

@@ -2,7 +2,7 @@
 declare(strict_types=1);
 namespace dW\HTML5;
 
-class DOMException extends \DOMException {
+class DOMException extends \Exception {
     // From PHP's DOMException; keeping error codes consistent
     const NO_MODIFICATION_ALLOWED = 7;
 
@@ -19,11 +19,11 @@ class DOMException extends \DOMException {
     ];
 
     public function __construct(int $code, ...$args) {
-        if (!isset(static::$messages[$code])) {
+        if (!isset(self::$messages[$code])) {
             throw new Exception(Exception::INVALID_CODE);
         }
 
-        $message = static::$messages[$code];
+        $message = self::$messages[$code];
         $previous = null;
 
         if ($args) {

lib/DOM/Element.php

@@ -42,6 +42,22 @@ class Element extends \DOMElement {
         }
     }
 
+    public function setAttributeNode(\DOMAttr $attribute) {
+        parent::setAttributeNode($attribute);
+
+        if ($attribute->name === 'id') {
+            $this->setIdAttribute($attribute->name, true);
+        }
+    }
+
+    public function setAttributeNodeNS(\DOMAttr $attribute) {
+        parent::setAttributeNodeNS($attribute);
+
+        if ($attribute->name === 'id') {
+            $this->setIdAttribute($attribute->name, true);
+        }
+    }
+
     public function __get(string $prop) {
         switch ($prop) {
             ### DOM Parsing Specification ###

lib/DOM/traits/Ancestor.php

@@ -16,7 +16,7 @@ trait Ancestor {
     protected function ancestor($needle, bool $returnNode = true) {
         $context = $this->parentNode;
         do {
-            $result = static::compare($needle, $context);
+            $result = self::compare($needle, $context);
             if (!is_null($result)) {
                 return ($returnNode === true) ? $result : true;
             }

lib/DOM/traits/Descendant.php

@@ -6,11 +6,11 @@ trait Descendant {
     use Compare;
 
     public function getDescendant($needle): \DOMNode {
-        return static::descendant($needle, true);
+        return self::descendant($needle, true);
     }
 
     public function hasDescendant($needle): bool {
-        return static::descendant($needle, false);
+        return self::descendant($needle, false);
     }
 
     protected function descendant($needle, bool $returnNode = true): \DOMNode {

lib/Exception.php

@@ -48,11 +48,11 @@ class Exception extends \Exception {
     ];
 
     public function __construct(int $code, ...$args) {
-        if (!isset(static::$messages[$code])) {
-            throw new Exception(self::INVALID_CODE);
+        if (!isset(self::$messages[$code])) {
+            throw new self(self::INVALID_CODE);
         }
 
-        $message = static::$messages[$code];
+        $message = self::$messages[$code];
         $previous = null;
 
         if ($args) {
@@ -70,7 +70,7 @@ class Exception extends \Exception {
 
         // If the number of replacements don't match the arguments then oops.
         if (count($args) !== $count) {
-            throw new Exception(self::INCORRECT_PARAMETERS_FOR_MESSAGE, $count);
+            throw new self(self::INCORRECT_PARAMETERS_FOR_MESSAGE, $count);
         }
 
         if ($count > 0) {