H:/Workspace/php-axiom/www/php-axiom/libraries/axiom/axTreeItem.class.php

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<?php
class axTreeItem implements ArrayAccess, Iterator {

    protected $_v;

    protected $_c;

    public function setValue ($v) {
        $this->_v = $v;
        return $this;
    }

    public function getValue () {
        return isset($this->_v) ? $this->_v : null;
    }
    
    public function __isset ($k) {
        return isset($this->_c[$k]);
    }
    
    public function __get ($k) {
        if (isset($this->_c[$k]))
            return $this->_c[$k];
        return $this->_c[$k] = new self;
    }
                
    public function __set ($k,$v) {
                $this->__get($k)->setValue($v);
    }
    
    public function __unset ($k) {
        unset($this->_c[$k]);
    }
    
    public function offsetExists($k) {
                return $this->__isset($k);
    }
    
    public function offsetGet ($k) {
                return $this->__get($k);
    }
    
    public function offsetSet ($k,$v) {
                $this->__set($k,$v);
    }
    
    public function offsetUnset ($k) {
                $this->__unset($k);
    }
    
    public function current () {
                return current($this->_c);
    }
    
    public function key () {
                return key($this->_c);
    }
    
    public function next () {
                next($this->_c);
    }
    
    public function rewind () {
                reset($this->_c);
    }
    
    public function valid () {
                return (bool)current($this->_c);
    }
                
    public function __toString () {
        return (string)$this->getValue();
    }
    
    public static function __set_state ($props) {
                $tree = new self;
                $tree->_v = $props['_v'];
                $tree->_c = $props['_c'];
                return $tree;
    }
}