/libraries/joomla/application/categories.php
PHP | 645 lines | 380 code | 54 blank | 211 comment | 72 complexity | 844ab6b8b17b87ff77f7d8daa2f6d87b MD5 | raw file
- <?php
- /**
- * @version $Id: categories.php 19205 2010-10-22 19:50:48Z 3dentech $
- * @copyright Copyright (C) 2005 - 2010 Open Source Matters, Inc. All rights reserved.
- * @license GNU General Public License version 2 or later; see LICENSE.txt
- */
- // No direct access
- defined('JPATH_BASE') or die;
- /**
- * JCategories Class.
- *
- * @package Joomla.Framework
- * @subpackage Application
- * @since 1.6
- */
- class JCategories
- {
- /**
- * Array to hold the object instances
- *
- * @param array
- */
- static $instances = array();
- /**
- * Array of category nodes
- *
- * @var mixed
- */
- protected $_nodes;
-
- /**
- * Array of checked categories -- used to save values when _nodes are null
- *
- * @var array
- */
- protected $_checkedCategories;
- /**
- * Name of the extension the categories belong to
- *
- * @var string
- */
- protected $_extension = null;
- /**
- * Name of the linked content table to get category content count
- *
- * @var string
- */
- protected $_table = null;
- /**
- * Name of the category field
- *
- * @var string
- */
- protected $_field = null;
- /**
- * Name of the key field
- *
- * @var string
- */
- protected $_key = null;
- /**
- * Name of the items state field
- */
- protected $_statefield = null;
- /**
- * Array of options
- *
- * @var array
- */
- protected $_options = null;
- /**
- * Class constructor
- *
- * @access public
- * @return boolean True on success
- */
- public function __construct($options)
- {
- $this->_extension = $options['extension'];
- $this->_table = $options['table'];
- $this->_field = (isset($options['field'])&&$options['field'])?$options['field']:'catid';
- $this->_key = (isset($options['key'])&&$options['key'])?$options['key']:'id';
- $this->_statefield = (isset($options['statefield'])) ? $options['statefield'] : 'state';
- $options['access'] = (isset($options['access'])) ? $options['access'] : 'true';
- $options['published'] = (isset($options['published'])) ? $options['published'] : 1;
- $this->_options = $options;
- return true;
- }
- /**
- * Returns a reference to a JCategories object
- *
- * @param $extension Name of the categories extension
- * @param $options An array of options
- * @return object
- */
- public static function getInstance($extension, $options = array())
- {
- $hash = md5($extension.serialize($options));
- if (isset(self::$instances[$hash]))
- {
- return self::$instances[$hash];
- }
- $parts = explode('.',$extension);
- $component = 'com_'.strtolower($parts[0]);
- $section = count($parts) > 1 ? $parts[1] : '';
- $classname = ucfirst(substr($component,4)).ucfirst($section).'Categories';
- if (!class_exists($classname))
- {
- $path = JPATH_SITE.DS.'components'.DS.$component.DS.'helpers'.DS.'category.php';
- if (is_file($path))
- {
- require_once $path;
- } else {
- return false;
- }
- }
- self::$instances[$hash] = new $classname($options);
- return self::$instances[$hash];
- }
- /**
- * Loads a specific category and all its children in a JCategoryNode object
- *
- * @param an optional id integer or equal to 'root'
- * @return JCategoryNode|null
- */
- public function get($id = 'root', $forceload = false)
- {
- if ($id !== 'root')
- {
- $id = (int) $id;
- if ($id == 0)
- {
- $id = 'root';
- }
- }
- // If this $id has not been processed yet, execute the _load method
- if ((!isset($this->_nodes[$id]) && !isset($this->_checkedCategories[$id])) || $forceload)
- {
- $this->_load($id);
- }
- // If we already have a value in _nodes for this $id, then use it
- if(isset($this->_nodes[$id]))
- {
- return $this->_nodes[$id];
- }
- // If we processed this $id already and it was not valid, then return null
- elseif (isset($this->_checkedCategories[$id]))
- {
- return null;
- }
- return false;
- }
- protected function _load($id)
- {
- $db = JFactory::getDbo();
- $app = JFactory::getApplication();
- $user = JFactory::getUser();
- $extension = $this->_extension;
- // Record that this $id has been checked
- $this->_checkedCategories[$id] = true;
- $query = new JDatabaseQuery;
- // right join with c for category
- $query->select('c.*');
- $query->select('CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(":", c.id, c.alias) ELSE c.id END as slug');
- $query->from('#__categories as c');
- $query->where('(c.extension='.$db->Quote($extension).' OR c.extension='.$db->Quote('system').')');
- if($this->_options['access'])
- {
- $query->where('c.access IN ('.implode(',', $user->authorisedLevels()).')');
- }
- if($this->_options['published'] == 1)
- {
- $query->where('c.published = 1');
- }
- $query->order('c.lft');
- // s for selected id
- if ($id!='root')
- {
- // Get the selected category
- $query->leftJoin('#__categories AS s ON (s.lft <= c.lft AND s.rgt >= c.rgt) OR (s.lft > c.lft AND s.rgt < c.rgt)');
- $query->where('s.id='.(int)$id);
- }
-
- $subQuery = ' (SELECT cat.id as id FROM #__categories AS cat JOIN #__categories AS parent ' .
- 'ON cat.lft BETWEEN parent.lft AND parent.rgt WHERE parent.extension = ' . $db->quote($extension) .
- ' AND parent.published != 1 GROUP BY cat.id) ';
- $query->leftJoin($subQuery . 'AS badcats ON badcats.id = c.id');
- $query->where('badcats.id is null');
- // i for item
- if(isset($this->_options['countItems']) && $this->_options['countItems'] == 1)
- {
- if($this->_options['published'] == 1)
- {
- $query->leftJoin($db->nameQuote($this->_table).' AS i ON i.'.$db->nameQuote($this->_field).' = c.id AND i.'.$this->_statefield.' = 1');
- } else {
- $query->leftJoin($db->nameQuote($this->_table).' AS i ON i.'.$db->nameQuote($this->_field).' = c.id');
- }
- $query->select('COUNT(i.'.$db->nameQuote($this->_key).') AS numitems');
- }
- // Group by
- $query->group('c.id');
- // Filter by language
- if ($app->isSite() && $app->getLanguageFilter()) {
- $query->where('(' . ($id!='root' ? 'c.id=s.id OR ':'') .'c.language in (' . $db->Quote(JFactory::getLanguage()->getTag()) . ',' . $db->Quote('*') . '))');
- }
- // Get the results
- $db->setQuery($query);
- $results = $db->loadObjectList('id');
- $childrenLoaded = false;
- if (count($results))
- {
- // foreach categories
- foreach($results as $result)
- {
- // Deal with root category
- if($result->id == 1)
- {
- $result->id = 'root';
- }
- // Deal with parent_id
- if($result->parent_id == 1)
- {
- $result->parent_id = 'root';
- }
- // Create the node
- if (!isset($this->_nodes[$result->id]))
- {
- // Create the JCategoryNode and add to _nodes
- $this->_nodes[$result->id] = new JCategoryNode($result, $this);
-
- // If this is not root, and if the current nodes parent is in the list or the current node parent is 0
- if($result->id != 'root' && (isset($this->_nodes[$result->parent_id]) || $result->parent_id == 0))
- {
- // Compute relationship between node and its parent - set the parent in the _nodes field
- $this->_nodes[$result->id]->setParent($this->_nodes[$result->parent_id]);
- }
-
- // if the node's parent id is not in the _nodes list and the node is not root (doesn't have parent_id == 0),
- // then remove this nodes from the list
- if(!(isset($this->_nodes[$result->parent_id]) || $result->parent_id == 0))
- {
- unset($this->_nodes[$result->id]);
- continue;
- }
- if($result->id == $id || $childrenLoaded)
- {
- $this->_nodes[$result->id]->setAllLoaded();
- $childrenLoaded = true;
- }
- }
- elseif($result->id == $id || $childrenLoaded)
- {
- // Create the JCategoryNode
- $this->_nodes[$result->id] = new JCategoryNode($result, $this);
- if($result->id != 'root' && (isset($this->_nodes[$result->parent_id]) || $result->parent_id))
- {
- // Compute relationship between node and its parent
- $this->_nodes[$result->id]->setParent($this->_nodes[$result->parent_id]);
- }
- if(!isset($this->_nodes[$result->parent_id]))
- {
- unset($this->_nodes[$result->id]);
- continue;
- }
- if($result->id == $id || $childrenLoaded)
- {
- $this->_nodes[$result->id]->setAllLoaded();
- $childrenLoaded = true;
- }
- }
- }
- }
- else
- {
- $this->_nodes[$id] = null;
- }
- }
- }
- /**
- * Helper class to load Categorytree
- * @author Hannes
- * @since 1.6
- */
- class JCategoryNode extends JObject
- {
- /** @var int Primary key */
- public $id = null;
- public $asset_id = null;
- public $parent_id = null;
- public $lft = null;
- public $rgt = null;
- public $level = null;
- public $extension = null;
- /** @var string The menu title for the category (a short name)*/
- public $title = null;
- /** @var string The the alias for the category*/
- public $alias = null;
- /** @var string */
- public $description = null;
- /** @var boolean */
- public $published = null;
- /** @var boolean */
- public $checked_out = 0;
- /** @var time */
- public $checked_out_time = 0;
- /** @var int */
- public $access = null;
- /** @var string */
- public $params = null;
- public $metadesc = null;
- public $metakey = null;
- public $metadata = null;
- public $created_user_id = null;
- public $created_time = null;
- public $modified_user_id = null;
- public $modified_time = null;
- public $hits = null;
- public $language = null;
- public $numitems = null;
- public $childrennumitems = null;
- public $slug = null;
- public $assets = null;
- /**
- * @var Parent Category
- */
- protected $_parent = null;
- /**
- * @var Array of Children
- */
- protected $_children = array();
- /**
- * @var Path from root to this category
- */
- protected $_path = array();
- /**
- * @var Category left of this one
- */
- protected $_leftSibling = null;
- /**
- * @var Category right of this one
- */
- protected $_rightSibling = null;
- /**
- * @var boolean true if all children have been loaded
- */
- protected $_allChildrenloaded = false;
- /**
- * @var Constructor of this tree
- */
- protected $_constructor = null;
- /**
- * Class constructor
- * @param $category
- * @return unknown_type
- */
- public function __construct($category = null, &$constructor = null)
- {
- if ($category)
- {
- $this->setProperties($category);
- if($constructor)
- {
- $this->_constructor = &$constructor;
- }
- return true;
- }
- return false;
- }
- /**
- * Set the parent of this category
- *
- * If the category already has a parent, the link is unset
- *
- * @param JCategoryNode|null the parent to be setted
- */
- function setParent(&$parent)
- {
- if ($parent instanceof JCategoryNode || is_null($parent))
- {
- if (!is_null($this->_parent))
- {
- $key = array_search($this, $this->_parent->_children);
- unset($this->_parent->_children[$key]);
- }
- if (!is_null($parent))
- {
- $parent->_children[] = & $this;
- }
- $this->_parent = & $parent;
- if($this->id != 'root')
- {
- $this->_path = $parent->getPath();
- $this->_path[] = $this->id.':'.$this->alias;
- }
- if(count($parent->_children) > 1)
- {
- end($parent->_children);
- $this->_leftSibling = prev($parent->_children);
- $this->_leftSibling->_rightsibling = &$this;
- }
- }
- }
- /**
- * Add child to this node
- *
- * If the child already has a parent, the link is unset
- *
- * @param JNode the child to be added
- */
- function addChild(&$child)
- {
- if ($child instanceof JCategoryNode)
- {
- $child->setParent($this);
- }
- }
- /**
- * Remove a specific child
- *
- * @param int ID of a category
- */
- function removeChild($id)
- {
- $key = array_search($this, $this->_parent->_children);
- unset($this->_parent->_children[$key]);
- }
- /**
- * Get the children of this node
- *
- * @return array the children
- */
- function &getChildren($recursive = false)
- {
- if(!$this->_allChildrenloaded)
- {
- $temp = $this->_constructor->get($this->id, true);
- $this->_children = $temp->getChildren();
- $this->_leftSibling = $temp->getSibling(false);
- $this->_rightSibling = $temp->getSibling(true);
- $this->setAllLoaded();
- }
- if($recursive)
- {
- $items = array();
- foreach($this->_children as $child)
- {
- $items[] = $child;
- $items = array_merge($items, $child->getChildren(true));
- }
- return $items;
- }
- return $this->_children;
- }
- /**
- * Get the parent of this node
- *
- * @return JNode|null the parent
- */
- function &getParent()
- {
- return $this->_parent;
- }
- /**
- * Test if this node has children
- *
- * @return bool
- */
- function hasChildren()
- {
- return count($this->_children);
- }
- /**
- * Test if this node has a parent
- *
- * @return bool
- */
- function hasParent()
- {
- return $this->getParent() != null;
- }
- /**
- * Function to set the left or right sibling
- * of a category
- *
- * @param JCategoryNode $sibling sibling
- * @param boolean $right if set to false, the sibling is the left one
- * @return void
- */
- function setSibling($sibling, $right = true)
- {
- if($right)
- {
- $this->_rightSibling = $sibling;
- } else {
- $this->_leftSibling = $sibling;
- }
- }
- /**
- * Returns the right or left sibling of a category
- *
- * @param boolean $right if set to false, returns the left sibling
- * @return JCategoryNode|null
- */
- function getSibling($right = true)
- {
- if(!$this->_allChildrenloaded)
- {
- $temp = $this->_constructor->get($this->id, true);
- $this->_children = $temp->getChildren();
- $this->_leftSibling = $temp->getSibling(false);
- $this->_rightSibling = $temp->getSibling(true);
- $this->setAllLoaded();
- }
- if($right)
- {
- return $this->_rightSibling;
- } else {
- return $this->_leftSibling;
- }
- }
- /**
- * Returns the category parameters
- *
- * @return JRegistry
- */
- function getParams()
- {
- if(!$this->params instanceof JRegistry)
- {
- $temp = new JRegistry();
- $temp->loadJSON($this->params);
- $this->params = $temp;
- }
- return $this->params;
- }
- /**
- * Returns the category metadata
- *
- * @return JRegistry
- */
- function getMetadata()
- {
- if(!($this->metadata instanceof JRegistry))
- {
- $temp = new JRegistry();
- $temp->loadJSON($this->metadata);
- $this->metadata = $temp;
- }
- return $this->metadata;
- }
- /**
- * Returns the category path to the root category
- *
- * @return array
- */
- function getPath()
- {
- return $this->_path;
- }
- /**
- * Returns the user that authored the category
- *
- * @param boolean $modified_user Returns the modified_user when set to true
- * @return JUser
- */
- function getAuthor($modified_user = false)
- {
- if($modified_user)
- {
- return JFactory::getUser($this->modified_user_id);
- }
- return JFactory::getUser($this->created_user_id);
- }
- function setAllLoaded()
- {
- $this->_allChildrenloaded = true;
- foreach($this->_children as $child)
- {
- $child->setAllLoaded();
- }
- }
- function getNumItems($recursive = false)
- {
- if($recursive)
- {
- $count = $this->numitems;
- foreach($this->getChildren() as $child)
- {
- $count = $count + $child->getNumItems(true);
- }
- return $count;
- }
- return $this->numitems;
- }
- }