Add `IObjectTreeNode` interface to `PageNode`

diff --git a/wcfsetup/install/files/lib/data/page/PageNode.class.php b/wcfsetup/install/files/lib/data/page/PageNode.class.php
index 9822cbe042d6e185640124f20cd8185653a16d43..36cc0283acc59cc18aca47fe495ac003e66cb388 100644 (file)
--- a/wcfsetup/install/files/lib/data/page/PageNode.class.php
+++ b/wcfsetup/install/files/lib/data/page/PageNode.class.php
@@ -3,6 +3,8 @@
 namespace wcf\data\page;
 
 use wcf\data\DatabaseObjectDecorator;
+use wcf\data\IObjectTreeNode;
+use wcf\data\TObjectTreeNode;
 
 /**
  * Represents a page node element.
@@ -15,30 +17,15 @@ use wcf\data\DatabaseObjectDecorator;
  * @method  Page    getDecoratedObject()
  * @mixin   Page
  */
-class PageNode extends DatabaseObjectDecorator implements \Countable, \RecursiveIterator
+class PageNode extends DatabaseObjectDecorator implements IObjectTreeNode
 {
-    /**
-     * parent node
-     * @var PageNode
-     */
-    protected $parentNode;
-
-    /**
-     * children of this node
-     * @var PageNode[]
-     */
-    protected $children = [];
+    use TObjectTreeNode;
 
     /**
      * node depth
      */
     protected int $depth = 0;
 
-    /**
-     * iterator position
-     */
-    private int $position = 0;
-
     /**
      * @inheritDoc
      */
@@ -70,83 +57,15 @@ class PageNode extends DatabaseObjectDecorator implements \Countable, \Recursive
         $this->children = $children;
     }
 
-    /**
-     * Returns the parent node
-     */
-    public function getParentNode(): ?self
-    {
-        return $this->parentNode;
-    }
-
-    /**
-     * Returns the number of children.
-     */
-    public function count(): int
-    {
-        return \count($this->children);
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function rewind(): void
-    {
-        $this->position = 0;
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function valid(): bool
-    {
-        return isset($this->children[$this->position]);
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function next(): void
-    {
-        $this->position++;
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function current(): self
-    {
-        return $this->children[$this->position];
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function key(): int
-    {
-        return $this->position;
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function getChildren(): self
-    {
-        return $this->children[$this->position];
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function hasChildren(): bool
+    #[\Override]
+    public function getDepth(): int
     {
-        return \count($this->children) > 0;
+        return $this->depth;
     }
 
-    /**
-     * Returns node depth.
-     */
-    public function getDepth(): int
+    #[\Override]
+    public function __toString(): string
     {
-        return $this->depth;
+        return $this->getDecoratedObject()->name;
     }
 }