1: <?php
 2: 
 3: /**
 4: * Class CompositeNode
 5: * 
 6: *  @version 1.0.2
 7: *  @author v.raskin
 8: *  @package vsword.node
 9: */
10: abstract class CompositeNode extends Node {
11:     
12:     protected $childrens = array();
13:     
14:     /**
15:     * @return int 
16:     */
17:     public function addNode(INode $node) {
18:         $this->childrens[] = $node;
19:         $node->setParent($this);
20:         return sizeof($this->childrens) - 1;
21:     }
22:     
23:     /**
24:     * @return INode[]
25:     */
26:     public function getChildrens() {
27:         return $this->childrens;
28:     }
29:     
30:     /**
31:     * @return INode
32:     */
33:     public function getNode($index) {
34:         return isset($this->childrens[$index]) ? $this->childrens[$index] : NULL;
35:     }
36:         
37:     /**
38:     * 
39:     * @return INode
40:     */
41:     public function getLastNode() {
42:         return sizeof($this->childrens) > 0 ? $this->childrens[sizeof($this->childrens)-1] : NULL;           
43:     }
44:     
45:     public function afterNode() {
46:         return NULL;
47:     }
48:     
49:     
50:     /**
51:     * @return string
52:     */
53:     public function look($tab = '') {
54:         $str = parent::look($tab);
55:         $tab .= "\t";
56:         foreach($this->childrens as $child)
57:             $str .= $tab.$child->look($tab);
58:         return $str;
59:     }
60:     
61: }
62: 
63: 
64: 
65: 
66: 
67: 
68: 
69: 
70: