1: <?php
 2: /**
 3:  * The Horde_Tree_Select:: class provides <option> tag rendering.
 4:  *
 5:  * Copyright 2005-2012 Horde LLC (http://www.horde.org/)
 6:  *
 7:  * See the enclosed file COPYING for license information (LGPL). If you
 8:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 9:  *
10:  * @author   Ben Chavet <ben@horde.org>
11:  * @category Horde
12:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
13:  * @package  Tree
14:  */
15: class Horde_Tree_Select extends Horde_Tree_Base
16: {
17:     /**
18:      * Allowed parameters for nodes.
19:      *
20:      * @var array
21:      */
22:     protected $_allowed = array(
23:         'selected'
24:     );
25: 
26:     /**
27:      * Should the tree be rendered statically?
28:      *
29:      * @var boolean
30:      */
31:     protected $_static = true;
32: 
33:     /**
34:      * Returns the tree.
35:      *
36:      * @param boolean $static  If true the tree nodes can't be expanded and
37:      *                         collapsed and the tree gets rendered expanded.
38:      *                         This option has no effect in this driver.
39:      *
40:      * @return string  The HTML code of the rendered tree.
41:      */
42:     public function getTree($static = false)
43:     {
44:         $this->_buildIndents($this->_root_nodes);
45: 
46:         $tree = '';
47:         foreach ($this->_root_nodes as $node_id) {
48:             $tree .= $this->_buildTree($node_id);
49:         }
50: 
51:         return $tree;
52:     }
53: 
54:     /**
55:      * Adds additional parameters to a node.
56:      *
57:      * @param string $id     The unique node id.
58:      * @param array $params  Parameters to set (key/value pairs).
59:      * <pre>
60:      * selected - (boolean) Whether this node is selected.
61:      * </pre>
62:      */
63:     public function addNodeParams($id, $params = array())
64:     {
65:         parent::addNodeParams($id, $params);
66:     }
67: 
68:     /**
69:      * Recursive function to walk through the tree array and build the output.
70:      *
71:      * @param string $node_id  The Node ID.
72:      *
73:      * @return string  The tree rendering.
74:      */
75:     protected function _buildTree($node_id)
76:     {
77:         $node = $this->_nodes[$node_id];
78: 
79:         $output = '<option value="' . htmlspecialchars($node_id) . '"' .
80:             (empty($node['selected']) ? '' : ' selected="selected"') .
81:             '>' .
82:             str_repeat('&nbsp;', intval($node['indent']) * 2) .
83:             htmlspecialchars($node['label']) .
84:             '</option>';
85: 
86:         if (isset($node['children']) && $node['expanded']) {
87:             foreach ($node['children'] as $val) {
88:                 $output .= $this->_buildTree($val);
89:             }
90:         }
91: 
92:         return $output;
93:     }
94: 
95: }
96: