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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* The alphaindex helper class.
*
* @package Component.Helpers
* @since 2.0
*/
class AlphaindexHelper extends AppHelper {
/**
* Get an AppAlphaindex instance
*
* @param string $path Path to xml alphaindex definition.
*
* @return AppAlphaindex
*
* @since 2.0
*/
public function create($path) {
return $this->app->object->create('AppAlphaindex', array($path));
}
}
/**
* The AppAlphaindex Class. Provides Alphaindex functionality.
*
* @package Component.Helpers
* @since 2.0
*/
class AppAlphaindex {
/**
* App instance
*
* @var App
* @since 2.0
*/
public $app;
/**
* The character index
*
* @var array
* @since 2.0
*/
protected $_index = array();
/**
* The object key mapping
*
* @var array
* @since 2.0
*/
protected $_objects = array();
/**
* The "other" character
*
* @var string
* @since 2.0
*/
protected $_other = '#';
/**
* Class constructor
*
* @param string $path Path to xml alphaindex definition.
* @since 2.0
*/
public function __construct($path) {
if ($xml = simplexml_load_file($path)) {
// add other character
if ($xml->attributes()->other) {
$this->_other = (string) $xml->attributes()->other;
}
// add characters
foreach ($xml->children() as $option) {
if (!in_array((string) $option, $this->_index)) {
$key = $option->attributes()->value ? (string) $option->attributes()->value : (string) $option;
$this->_index[$key] = (string) $option;
}
}
}
}
/**
* Retrieve character index.
*
* @param boolean $other Include other character in index
*
* @return array The index
*
* @since 2.0
*/
public function getIndex($other = false) {
$index = $this->_index;
$key = $other ? false : array_search($this->_other, $index);
if ($key !== false) {
unset($index[$key]);
}
return $index;
}
/**
* Retrieve character for items which are not indexed, usually #.
*
* @return string The other character
*
* @since 2.0
*/
public function getOther() {
return $this->_other;
}
/**
* Retrieve alpha char from value.
*
* @param string $value The value to look for in the index
*
* @return string The alpha character
*
* @since 2.0
*/
public function getChar($value) {
return isset($this->_index[$value]) ? $this->_index[$value] : '';
}
/**
* Retrieve objects which match a character in index.
*
* @param string $char Index character
* @param string $class_name Retrieve only objects of a certain class
*
* @return array The objects
*
* @since 2.0
*/
public function getObjects($char, $class_name = null) {
$key = array_search($char, $this->_index);
if ($key !== false && isset($this->_objects[$key])) {
if ($class_name !== null) {
return array_filter($this->_objects[$key], create_function('$object', 'return $object instanceof '.$class_name.';'));
}
return $this->_objects[$key];
}
return array();
}
/**
* Add objects to index.
*
* @param array $objects Object array
* @param string $property Object property to use for indexing
*
* @return void
*
* @since 2.0
*/
public function addObjects($objects, $property) {
$index = $this->getIndex();
foreach ($objects as $object) {
if (isset($object->$property)) {
$char = $this->app->string->strtolower($this->app->string->substr($object->$property, 0, 1));
$key = array_search($char, $index);
if ($key !== false) {
$this->_objects[$key][] = $object;
} else {
$this->_objects[array_search($this->getOther(), $this->_index)][] = $object;
}
}
}
return $this;
}
/**
* Render the alphaindex.
*
* @param Application The app to use as base for the routes
* @return string Alphaindex html
*
* @since 2.0
*/
public function render(Application $app = null) {
if (!$app) {
$app = $this->app->zoo->getApplication();
}
// check if index is empty
if (empty($this->_index)) {
return '';
}
$html = array();
// create html
foreach ($this->_index as $key => $char) {
if (isset($this->_objects[$key]) && count($this->_objects[$key])) {
$html[] = '<a href="'.JRoute::_($this->app->route->alphaindex($app->id, $key)).'" title="'.$char.'">'.$char.'</a>';
} else {
$html[] = '<span title="'.$char.'">'.$char.'</span>';
}
}
return implode("\n", $html);
}
}