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<?php
/**
* The Horde_Tree_select:: class extends the Horde_Tree class to provide
* <option> tag rendering.
*
* Copyright 2005-2006 Ben Chavet <ben@horde.org>
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* $Horde: framework/Tree/Tree/select.php,v 1.2.2.7 2006/01/01 21:28:40 jan Exp $
*
* @author Ben Chavet <ben@horde.org>
* @package Horde_Tree
* @since Horde 3.1
*/
class Horde_Tree_select extends Horde_Tree {
/**
* TODO
*
* @var array
*/
var $_nodes = array();
/**
* Constructor.
*/
function Horde_Tree_select($tree_name, $params)
{
parent::Horde_Tree($tree_name, $params);
$this->_static = true;
}
/**
* Returns the tree.
*
* @return string The HTML code of the rendered tree.
*/
function getTree()
{
$this->_buildIndents($this->_root_nodes);
$tree = '';
foreach ($this->_root_nodes as $node_id) {
$tree .= $this->_buildTree($node_id);
}
return $tree;
}
/**
* Checks the current environment to see if we can render the HTML tree.
* HTML is always renderable, at least until we add a php-gtk tree
* backend, in which case this implementation will actually need a body.
*
* @static
*
* @return boolean Whether or not this Tree:: backend will function.
*/
function isSupported()
{
return true;
}
/**
* Returns just the JS node definitions as a string. This is a no-op for
* the select renderer.
*/
function renderNodeDefinitions()
{
}
/**
* Adds additional parameters to a node.
*
* @param string $id The unique node id.
* @param array $params Any other parameters to set.
* <pre>
* selected -- Whether this node is selected
* </pre>
*/
function addNodeParams($id, $params = array())
{
if (!is_array($params)) {
$params = array($params);
}
$allowed = array('selected');
foreach ($params as $param_id => $param_val) {
/* Set only allowed and non-null params. */
if (in_array($param_id, $allowed) && !is_null($param_val)) {
$this->_nodes[$id][$param_id] = $param_val;
}
}
}
/**
* Recursive function to walk through the tree array and build the output.
*
* @access private
*
* @param string $node_id The Node ID.
*
* @return string The tree rendering.
*/
function _buildTree($node_id)
{
$selected = $this->_nodes[$node_id]['selected'] ? ' selected="selected"' : '';
$output = '<option value="' . htmlspecialchars($node_id) . '"' . $selected . '>' .
str_repeat(' ', (int)$this->_nodes[$node_id]['indent']) . htmlspecialchars($this->_nodes[$node_id]['label']) .
'</option>';
if (isset($this->_nodes[$node_id]['children']) &&
$this->_nodes[$node_id]['expanded']) {
$num_subnodes = count($this->_nodes[$node_id]['children']);
for ($c = 0; $c < $num_subnodes; $c++) {
$child_node_id = $this->_nodes[$node_id]['children'][$c];
$output .= $this->_buildTree($child_node_id);
}
}
return $output;
}
}
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