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<?php
/**
* @package ZOO
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Class to deal with menus
*
* @package Component.Classes
*/
class AppMenu extends AppTree {
/**
* The name of the menu
*
* @var string
* @since 2.0
*/
protected $_name;
/**
* Class constructor
*
* @param string $name The name of the menu
*/
public function __construct($name) {
parent::__construct();
$this->_name = $name;
}
/**
* Render the menu
*
* @return string The html code for the menu
*
* @since 2.0
*/
public function render() {
// create html
$html = '<ul>';
foreach ($this->_root->getChildren() as $child) {
$html .= $child->render($this);
}
$html .= '</ul>';
// decorator callbacks ?
if (func_num_args()) {
// parse html
if ($xml = simplexml_load_string($html)) {
foreach (func_get_args() as $callback) {
if (is_callable($callback)) {
$this->_map($xml, $callback);
}
}
$html = $xml->asXML();
}
}
return $html;
}
/**
* Call a method on evey child of the tree
*
* @param SimpleXMLElement $xml The xml to traverse
* @param function $callback The method to call on each child
* @param array $args The arguments to pass on to the callback
*
* @since 2.0
*/
protected function _map(SimpleXMLElement $xml, $callback, $args = array()) {
// init level
if (!isset($args['level'])) {
$args['level'] = 0;
}
// call function
call_user_func($callback, $xml, $args);
// raise level
$args['level']++;
// map to all children
$children = $xml->children();
if ($n = count($children)) {
for ($i = 0; $i < $n; $i++) {
$this->_map($children[$i], $callback, $args);
}
}
}
}
/**
* Class to represent a Menu Item
*
* @package Component.Classes
*/
class AppMenuItem extends AppTreeItem {
/**
* Id of the menu item
*
* @var int
* @since 2.0
*/
protected $_id;
/**
* Name of the menu item
*
* @var string
* @since 2.0
*/
protected $_name;
/**
* Url of the menu item
*
* @var string
* @since 2.0
*/
protected $_link;
/**
* Attributes to apply to the item
*
* @var array
* @since 2.0
*/
protected $_attributes;
/**
* Class contructor
*
* @param int $id Id of the menu item
* @param string $name Name of the menu item
* @param string $link Link of the menu item
* @param array $attributes List of attributes
*/
public function __construct($id = null, $name = '', $link = null, array $attributes = array()) {
$this->_id = $id;
$this->_name = $name;
$this->_link = $link;
$this->_attributes = $attributes;
}
/**
* Get the name of the menu Item
*
* @return string The name of the meu item
*
* @since 2.0
*/
public function getName() {
return $this->_name;
}
/**
* Set the name of the menu item
*
* @param string $name The name
*
* @return AppMenuItem $this for chaining support
*
* @since 2.0
*/
public function setName($name) {
$this->_name = $name;
return $this;
}
/**
* Get the id of the menu item
*
* @return int The menu item id
*
* @since 2.0
*/
public function getID() {
return $this->_id ? $this->_id : parent::getId();
}
/**
* Get an attribute for the menu item
*
* @param string $key The key to fetch
*
* @return string The value for the attribute
*
* @since 2.0
*/
public function getAttribute($key) {
if (isset($this->_attributes[$key])) {
return $this->_attributes[$key];
}
return null;
}
/**
* Set an attribute for the menu item
*
* @param string $key The key
* @param string $value The value
*
* @return AppMenuItem $this for chaining support
*
* @since 2.0
*/
public function setAttribute($key, $value) {
$this->_attributes[$key] = $value;
return $this;
}
/**
* Render the single menu item
*
* @return string The html for this menu item
*
* @since 2.0
*/
public function render() {
$link = $this->app->request->getVar('hidemainmenu') ? null : $this->_link;
$html = array('<li '.JArrayHelper::toString($this->_attributes).'>');
$html[] = ($link ? '<a href="'.JRoute::_($link).'">' : '<span>').'<span>'.$this->getName().'</span>'.($link ? '</a>' : '</span>');
if (count($this->getChildren())) {
$html[] = '<ul>';
foreach ($this->getChildren() as $child) {
$html[] = $child->render();
}
$html[] = '</ul>';
}
$html[] = '</li>';
return implode("\n", $html);
}
}
/**
* A decorator class for the menus
*/
class AppMenuDecorator {
/**
* Add item index and level to class attribute
*
* @param SimpleXMLElement $node The node to add the index and level to
* @param array $args Callback arguments
*
* @since 2.0
*/
public static function index(SimpleXMLElement $node, $args) {
if ($node->getName() == 'ul') {
// set ul level
$level = ($args['level'] / 2) + 1;
$node->addAttribute('class', trim($node->attributes()->class.' level'.$level));
// set order/first/last for li
$count = count($node->children());
foreach ($node->children() as $i => $child) {
$child->addAttribute('level', $level);
$child->addAttribute('order', $i + 1);
if ($i == 0) $child->addAttribute('first', 1);
if ($i == $count - 1) $child->addAttribute('last', 1);
}
}
if ($node->getName() == 'li') {
// level and item order
$css = 'level'.$node->attributes()->level;
$css .= ' item'.$node->attributes()->order;
// first, last and parent
if ($node->attributes()->first) $css .= ' first';
if ($node->attributes()->last) $css .= ' last';
if (isset($node->ul)) $css .= ' parent';
// add li css classes
$node->attributes()->class = trim($node->attributes()->class.' '.$css);
// add a/span css classes
$children = $node->children();
if ($firstChild = $children[0]) {
$firstChild->addAttribute('class', trim($firstChild->attributes()->class.' '.$css));
}
}
unset($node->attributes()->level);
unset($node->attributes()->order);
unset($node->attributes()->first);
unset($node->attributes()->last);
}
}