Rename to deleteSubTree and add stubs

Author: kimpepper

src/NestedSetInterface.php

@@ -34,7 +34,7 @@ public function deleteLeaf(Leaf $leaf);
    * @param \PNX\Tree\Leaf $leaf
    *   The leaf to delete.
    */
-  public function deleteLeafAndDescendants(Leaf $leaf);
+  public function deleteSubTree(Leaf $leaf);
 
   /**
    * Finds all descendants of a leaf.
@@ -73,4 +73,14 @@ public function findAncestors(Leaf $leaf);
    */
   public function getLeaf($id, $revision_id);
 
+  /**
+   * Moves a Leaf and its sub-tree under a new parent leaf.
+   *
+   * @param \PNX\Tree\Leaf $parent
+   *   The parent leaf to move under.
+   * @param \PNX\Tree\Leaf $leaf
+   *   The leaf to move.
+   */
+  public function moveSubTree(Leaf $parent, Leaf $leaf);
+
 }

src/Storage/DbalNestedSet.php

@@ -216,7 +216,7 @@ public function deleteLeaf(Leaf $leaf) {
   /**
    * {@inheritdoc}
    */
-  public function deleteLeafAndDescendants(Leaf $leaf) {
+  public function deleteSubTree(Leaf $leaf) {
     $left = $leaf->getLeft();
     $right = $leaf->getRight();
     $width = $right - $left + 1;
@@ -246,4 +246,11 @@ public function deleteLeafAndDescendants(Leaf $leaf) {
 
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function moveSubTree(Leaf $parent, Leaf $leaf) {
+    // TODO: Implement moveSubTree() method.
+  }
+
 }

tests/Functional/DbalNestedSetTest.php

@@ -220,7 +220,7 @@ public function testDeleteLeafAndDescendants() {
 
     $leaf = $this->nestedSet->getLeaf(4, 1);
 
-    $this->nestedSet->deleteLeafAndDescendants($leaf);
+    $this->nestedSet->deleteSubTree($leaf);
 
     // Leaf should be deleted.
     $leaf = $this->nestedSet->getLeaf(4, 1);