egroupware/phpgwapi/inc/class.categories.inc.php

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<?php
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/**
* API - Categories
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*
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* @link http://www.egroupware.org
* @author Joseph Engo <jengo@phpgroupware.org>
* @author Bettina Gille <ceb@phpgroupware.org>
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* Copyright (C) 2000, 2001 Joseph Engo, Bettina Gille
* Copyright (C) 2002, 2003 Bettina Gille
* Reworked 11/2005 by RalfBecker-AT-outdoor-training.de
* Reworked 12/2008 by RalfBecker-AT-outdoor-training.de to operate only on a catergory cache, no longer the db direct
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* @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License
* @package api
* @subpackage categories
* @access public
* @version $Id$
*/
/**
* class to manage categories in eGroupWare
*
* Categories are read now once from the database into a static cache variable (by the static init_cache method).
* The egw object fills that cache ones per session, stores it in a private var, from which it restores it for each
* request of that session.
*
* @ToDo The cache now contains a backlink from the parent to it's children. Use that link to simplyfy return_all_children
* and other functions needing to know if a cat has children. Be aware a user might not see all children, as they can
* belong to other users.
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*/
class categories
{
/**
* Account id this class is instanciated for (-1 for global cats)
*
* @var int
*/
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var $account_id;
/**
* Application this class is instancated for ('phpgw' for application global cats)
*
* @var string
*/
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var $app_name;
/**
* @var egw_db
*/
var $db;
/**
* Total number of records of return_(sorted_)array (returning only a limited number of rows)
*
* @var int
*/
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var $total_records;
/**
* Grants from other users for account_id and app_name (init by return array)
*
* @var array
*/
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var $grants;
/**
* Name of the categories table
*/
const TABLE = 'egw_categories';
/**
* @deprecated use categoris::TABLE
* @var string
*/
var $table = self::TABLE;
/**
* Cache holding all categories, set via init_cache() method
*
* @var array cat_id => array of data
*/
private static $cache;
/**
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* constructor for categories class
*
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* @param int/string $accountid='' account id or lid, default to current user
* @param string $app_name='' app name defaults to current app
*/
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function categories($accountid='',$app_name = '')
{
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if (!$app_name) $app_name = $GLOBALS['egw_info']['flags']['currentapp'];
$this->account_id = (int) get_account_id($accountid);
$this->app_name = $app_name;
$this->db = $GLOBALS['egw']->db;
if (is_null(self::$cache)) // sould not be necessary, as cache is load and restored by egw object
{
self::init_cache();
}
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}
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/**
* return_all_children
* returns array with id's of all children from $cat_id and $cat_id itself!
*
* @param int|array $cat_id (array of) integer cat-id to search for
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* @return array of cat-id's
*/
function return_all_children($cat_id)
{
$all_children = (array) $cat_id;
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$children = $this->return_array('subs',0,False,'','','',True,$cat_id,-1,'id');
if (is_array($children) && count($children))
{
$all_children = array_merge($all_children,$this->return_all_children($children));
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}
//echo "<p>categories::return_all_children($cat_id)=(".implode(',',$all_children).")</p>\n";
return $all_children;
}
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/**
* return an array populated with categories
*
* @param string $type='all' 'subs','mains','appandmains','appandsubs','noglobal','noglobalapp', defaults to 'all'
* @param int $start=0 see $limit
* @param boolean|int $limit if true limited query to maxmatches rows (starting with $start)
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* @param string $query='' query-pattern
* @param string $sort='ASC' sort order, defaults to 'ASC'
* @param string $order='' order by, default cat_main, cat_level, cat_name ASC
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* @param boolean $globals includes the global egroupware categories or not
* @param array|int $parent_id=null return only subcats of $parent_id(s)
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* @param int $lastmod = -1 if > 0 return only cats modified since then
* @param string $column='' if column-name given only that column is returned, not the full array with all cat-data
* @param array $filter=null array with column-name (without cat_-prefix) => value pairs (! negates the value)
* @return array of cat-arrays or $column values
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*/
function return_array($type='all', $start=0, $limit=true, $query='', $sort='ASC',$order='',$globals=false, $parent_id=null, $lastmod=-1, $column='', $filter=null)
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{
//error_log(__METHOD__."($type,$start,$limit,$query,$sort,$order,globals=$globals,parent=".array2string($parent_id).",$lastmod,$column) account_id=$this->account_id, appname=$this->app_name: ".function_backtrace());
// load the grants
if ($this->account_id != -1 && is_null($this->grants))
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{
// resolving the group members/grants is very slow with ldap accounts backend
// let's skip it for the addressbook, if we are using the ldap accounts backend
$this->grants = $GLOBALS['egw']->acl->get_grants($app_name,
$app_name != 'addressbook' || $GLOBALS['egw_info']['server']['account_repository'] != 'ldap');
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}
$cats = array();
foreach(self::$cache as $cat_id => $cat)
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{
if ($filter) foreach($filter as $col => $val)
{
if (!is_array($val) && $val[0] === '!')
{
if ($cat[$col] == substr($val,1)) continue 2; // 2 for BOTH foreach!
}
elseif (is_array($val))
{
if (!in_array($cat[$col],$val)) continue 2;
}
else
{
if ($cat[$col] != $val) continue 2;
}
}
// check if certain parent required
if ($parent_id && !in_array($cat['parent'],(array)$parent_id)) continue;
// apply standard acl / grants: return only application global cats (if $globals) or
if (!($globals && $cat['appname'] == 'phpgw' ||
$cat['appname'] == $this->app_name && ($cat['owner'] == -1 || $cat['owner'] == $this->account_id ||
$this->account_id != -1 && $cat['access'] == 'public' && $this->grants && isset($this->grants[$cat['owner']]))))
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{
continue;
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}
// check if we have the correct type
switch ($type)
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{
case 'subs':
if (!$cat['parent']) continue 2; // 2 for switch AND foreach!
break;
case 'mains':
if ($cat['parent']) continue 2;
break;
case 'appandmains':
if ($cat['appname'] != $this->app_name || $cat['parent']) continue 2;
break;
case 'appandsubs':
if ($cat['appname'] != $this->app_name || !$cat['parent']) continue 2;
break;
case 'noglobal':
if ($cat['appname'] == $this->app_name) continue 2;
break;
case 'noglobalapp':
if ($cat['appname'] != $this->app_name || $cat['owner'] == (int)$this->account_id) continue 2;
break;
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}
// check name and description for $query
if ($query && stristr($cat['name'],$query) === false && stristr($cat['description'],$query) === false) continue;
// check if last modified since
if ($lastmod > 0 && $cat['last_mod'] <= $lastmod) continue;
$cats[] = $cat;
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}
if (!($this->total_records = count($cats)))
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{
//error_log(__METHOD__."($type,$start,$limit,$query,$sort,$order,$globals,parent=$parent_id,$lastmod,$column) account_id=$this->account_id, appname=$this->app_name = FALSE");
return false;
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}
if (!$sort) $sort = 'ASC';
// order the entries if necessary (cache is already ordered in or default order: cat_main, cat_level, cat_name ASC)
if ($this->total_records > 1 && !empty($order) &&
preg_match('/^[a-zA-Z_(), ]+$/',$order) && preg_match('/^(ASC|DESC|asc|desc)$/',$sort))
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{
if (strstr($order,'cat_data') !== false) $order = 'cat_data'; // sitemgr orders by round(cat_data)!
if (substr($order,0,4) == 'cat_') $order = substr($order,4);
$sign = strtoupper($sort) == 'DESC' ? '-' : '';
usort($cats,create_function('$a,$b',$func=(in_array($order,array('name','description','appname','app_name')) ?
"return ${sign}strcasecmp(\$a['$order'],\$b['$order']);" : "return $sign(int)\$a['$order'] - $sign(int)\$b['$order'];")));
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}
// limit the number of returned rows
if ($limit)
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{
if (!is_int($limit)) $limit = (int)$GLOBALS['egw_info']['user']['preferences']['common']['maxmatchs'];
$cats = array_slice($cats,(int)$start,$limit);
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}
// return only a certain column (why not return is as value?)
if ($column)
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{
foreach($cats as $k => $cat)
{
$cats[$k] = $cat[$column];
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}
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}
//error_log(__METHOD__."($type,$start,$limit,$query,$sort,$order,$globals,parent=$parent_id,$lastmod,$column) account_id=$this->account_id, appname=$this->app_name = ".array2string($cats));
reset($cats); // some old code (eg. sitemgr) relies on the array-pointer!
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return $cats;
}
/**
* return a sorted array populated with categories (main sorting criteria is hierachy!)
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*
* @param int $start=0 see $limit
* @param boolean|int $limit if true limited query to maxmatches rows (starting with $start)
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* @param string $query='' query-pattern
* @param string $sort='ASC' sort order, either defaults to 'ASC'
* @param string $order='cat_name' order by
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* @param boolean $globals includes the global egroupware categories or not
* @param array|int $parent_id=0 return only subcats of $parent_id(s)
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* @return array with cats
*/
function return_sorted_array($start=0,$limit=True,$query='',$sort='ASC',$order='cat_name',$globals=False, $parent_id=0)
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{
if (!$sort) $sort = 'ASC';
if (!$order) $order = 'cat_name';
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//error_log(__METHOD__."($start,$limit,$query,$sort,$order,globals=$globals,parent=$parent_id) account_id=$this->account_id, appname=$this->app_name: ".function_backtrace());
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$parents = $cats = array();
if (!($cats = $this->return_array('all',0,false,$query,$sort,$order,$globals,(array)$parent_id)))
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{
$cats = array();
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}
foreach($cats as $cat)
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{
$parents[] = $cat['id'];
}
while (count($parents))
{
$sub_select = ' AND cat_parent IN (' . implode(',',$parents) . ')';
if (!($subs = $this->return_array('all',0,false,$query,$sort,$order,$globals,$parents)))
{
break;
}
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$parents = $children = array();
foreach($subs as $cat)
{
$parents[] = $cat['id'];
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$children[$cat['parent']][] = $cat;
}
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// sort the cats into the mains
if (count($children))
{
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$cats2 = $cats;
$cats = array();
foreach($cats2 as $cat)
{
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$cats[] = $cat;
if (isset($children[$cat['id']]))
{
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foreach($children[$cat['id']] as $child)
{
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$cats[] = $child;
}
}
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}
}
}
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$this->total_records = count($cats);
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// limit the number of returned rows
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if ($limit)
{
if (!is_int($limit)) $limit = (int)$GLOBALS['egw_info']['user']['preferences']['common']['maxmatchs'];
$cats = array_slice($cats,(int)$start,$limit);
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}
reset($cats); // some old code (eg. sitemgr) relies on the array-pointer!
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return $cats;
}
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/**
* read a single category
*
* We use a shared cache together with id2name
*
* @param int $id id of category
* @return array|boolean array with one array of cat-data or false if cat not found
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*/
static function return_single($id)
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{
return isset(self::$cache[$id]) ? array(self::$cache[$id]) : false;
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}
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/**
* return into a select box, list or other formats
*
* @param string/array $format string 'select' or 'list', or array with all params
* @param string $type='' subs or mains
* @param int/array $selected - cat_id or array with cat_id values
* @param boolean $globals True or False, includes the global egroupware categories or not
* @deprecated use html class to create selectboxes
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* @return string populated with categories
*/
function formatted_list($format,$type='',$selected = '',$globals = False,$site_link = 'site')
{
if(is_array($format))
{
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$type = ($format['type']?$format['type']:'all');
$selected = (isset($format['selected'])?$format['selected']:'');
$self = (isset($format['self'])?$format['self']:'');
$globals = (isset($format['globals'])?$format['globals']:True);
$site_link = (isset($format['site_link'])?$format['site_link']:'site');
$format = $format['format'] ? $format['format'] : 'select';
}
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if (!is_array($selected))
{
$selected = explode(',',$selected);
}
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if ($type != 'all')
{
$cats = $this->return_array($type,0,False,'','','',$globals);
}
else
{
$cats = $this->return_sorted_array(0,False,'','','',$globals);
}
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if (!$cats) return '';
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if($self)
{
foreach($cats as $key => $cat)
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{
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if ($cat['id'] == $self)
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{
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unset($cats[$key]);
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}
}
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}
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switch ($format)
{
case 'select':
foreach($cats as $cat)
{
$s .= '<option value="' . $cat['id'] . '"';
if (in_array($cat['id'],$selected))
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{
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$s .= ' selected="selected"';
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}
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$s .= '>'.str_repeat('&nbsp;',$cat['level']);
$s .= $GLOBALS['egw']->strip_html($cat['name']);
if ($cat['app_name'] == 'phpgw' || $cat['owner'] == '-1')
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{
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$s .= ' &#9830;';
}
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$s .= '</option>' . "\n";
}
break;
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case 'list':
$space = '&nbsp;&nbsp;';
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$s = '<table border="0" cellpadding="2" cellspacing="2">' . "\n";
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foreach($cats as $cat)
{
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$image_set = '&nbsp;';
if (in_array($cat['id'],$selected))
{
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$image_set = '<img src="' . EGW_IMAGES_DIR . '/roter_pfeil.gif">';
}
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if (($cat['level'] == 0) && !in_array($cat['id'],$selected))
{
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$image_set = '<img src="' . EGW_IMAGES_DIR . '/grauer_pfeil.gif">';
}
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$space_set = str_repeat($space,$cat['level']);
$s .= '<tr>' . "\n";
$s .= '<td width="8">' . $image_set . '</td>' . "\n";
$s .= '<td>' . $space_set . '<a href="' . $GLOBALS['egw']->link($site_link,'cat_id=' . $cat['id']) . '">'
. $GLOBALS['egw']->strip_html($cat['name'])
. '</a></td>' . "\n"
. '</tr>' . "\n";
}
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$s .= '</table>' . "\n";
break;
}
return $s;
}
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/**
* add a category
*
* @param array $value cat-data
* @return int new cat-id
*/
function add($values)
{
if ((int)$values['parent'] > 0)
{
$values['level'] = $this->id2name($values['parent'],'level')+1;
$values['main'] = $this->id2name($values['parent'],'main');
}
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$values = array_merge(
array(
'app_name' => $this->app_name,
'access' => 'public',
),
$values);
$this->db->insert(self::TABLE,array(
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'cat_parent' => $values['parent'],
'cat_owner' => $this->account_id,
'cat_access' => $values['access'],
'cat_appname' => $values['app_name'],
'cat_name' => $values['name'],
'cat_description' => $values['descr'],
'cat_data' => $values['data'],
'cat_main' => $values['main'],
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'cat_level' => $values['level'],
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'last_mod' => time(),
),(int)$values['id'] > 0 ? array('cat_id' => $values['id']) : array(),__LINE__,__FILE__);
$id = (int)$values['id'] > 0 ? (int)$values['id'] : $this->db->get_last_insert_id(self::TABLE,'cat_id');
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if (!(int)$values['parent'])
{
$this->db->update(self::TABLE,array('cat_main' => $id),array('cat_id' => $id),__LINE__,__FILE__);
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}
// update cache accordingly
self::invalidate_cache($id);
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return $id;
}
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/**
* delete a category
*
* @param int $cat_id category id
* @param boolean $drop_subs=false if true delete sub-cats too
* @param boolean $modify_subs=false if true make the subs owned by the parent of $cat_id
*/
function delete($cat_id, $drop_subs = False, $modify_subs = False)
{
if ($modify_subs)
{
$new_parent = $this->id2name($cat_id,'parent');
foreach ((array) $this->return_sorted_array('',False,'','','',False, $cat_id) as $cat)
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{
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if ($cat['level'] == 1)
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{
$this->db->update(self::TABLE,array(
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'cat_level' => 0,
'cat_parent' => 0,
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'cat_main' => $cat['id'],
),array(
'cat_id' => $cat['id'],
'cat_appname' => $this->app_name,
),__LINE__,__FILE__);
$new_main = $cat['id'];
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}
else
{
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$update = array('cat_level' => $cat['level']-1);
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if ($new_main) $update['cat_main'] = $new_main;
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if ($cat['parent'] == $cat_id) $update['cat_parent'] = $new_parent;
$this->db->update(self::TABLE,$update,array(
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'cat_id' => $cat['id'],
'cat_appname' => $this->app_name,
),__LINE__,__FILE__);
}
}
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}
if ($drop_subs)
{
$where = array('cat_id='.(int)$cat_id.' OR cat_parent='.(int)$cat_id.' OR cat_main='.(int)$cat_id);
}
else
{
$where['cat_id'] = $cat_id;
}
$where['cat_appname'] = $this->app_name;
$this->db->delete(self::TABLE,$where,__LINE__,__FILE__);
// update cache accordingly
self::invalidate_cache($cat_id);
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}
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/**
* edit / update a category
*
* @param array $values array with cat-data (it need to be complete, as everything get's written)
* @return int cat-id
*/
function edit($values)
{
if (isset($values['old_parent']) && (int)$values['old_parent'] != (int)$values['parent'])
{
$this->delete($values['id'],False,True);
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return $this->add($values);
}
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else
{
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if ($values['parent'] > 0)
{
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$values['main'] = $this->id2name($values['parent'],'main');
$values['level'] = $this->id2name($values['parent'],'level') + 1;
}
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else
{
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$values['main'] = $values['id'];
$values['level'] = 0;
}
}
$this->db->update(self::TABLE,array(
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'cat_name' => $values['name'],
'cat_description' => $values['descr'],
'cat_data' => $values['data'],
'cat_parent' => $values['parent'],
'cat_access' => $values['access'],
'cat_main' => $values['main'],
'cat_level' => $values['level'],
'last_mod' => time(),
),array(
'cat_id' => $values['id'],
'cat_appname' => $this->app_name,
),__LINE__,__FILE__);
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// update cache accordingly
self::invalidate_cache($values['id']);
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return (int)$values['id'];
}
/**
* return category id for a given name
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*
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* Cat's with the given name are returned in this order:
* - personal cats first
* - then application global categories
* - global categories
* - cat's of other user
*
* @param string $cat_name cat-name
* @param boolean|string $strip=false if true, strips 'X-' ($strip) from category names added by some SyncML clients
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* @return int cat-id or 0 if not found
*/
function name2id($cat_name, $strip=false)
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{
static $cache = array(); // a litle bit of caching
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if (isset($cache[$cat_name])) return $cache[$cat_name];
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if ($strip === true)
{
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$strip = 'X-';
}
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$cats = array($cat_name);
if ($strip && strncmp($strip, $cat_name, strlen($strip)) == 0)
{
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$stripped_cat_name = substr($cat_name, strlen($strip));
if (isset($cache[$stripped_cat_name]))
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{
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$cache[$cat_name] = $cache[$stripped_cat_name];
return $cache[$stripped_cat_name];
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}
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$cats[] = $stripped_cat_name;
}
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if (!($cats = $this->return_array('all',0,false,'','','',true,null,-1,'',array(
'name' => $cats,
'appname' => array($this->app_name, 'phpgw'),
))))
{
return 0; // cat not found, dont cache it, as it might be created in this request
}
if (count($cats) > 1)
{
// if more the one cat matches we weight them by: exact name match; own, global, other users cat; appplication cats
foreach($cats as $k => $cat)
{
$cats[$k]['weight'] = 100 * ($cat['name'] == $cat_name) +
10 * ($cat['owner'] == $this->account_id ? 3 : ($cat['owner'] == -1 ? 2 : 1)) +
($cat['appname'] != 'phpgw');
}
// sort heighest weight to the top
usort($cats,create_function('$a,$b',"return \$b['weight'] - \$a['weight'];"));
}
return $cache[$cat['cat_name']] = (int) $cats[0]['id'];
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}
/**
* return category information for a given id
*
* We use a shared cache together with return_single
*
* @param int $cat_id=0 cat-id
* @param string $item='name requested information, 'path' = / delimited path of category names (incl. parents)
* @return string information or '--' if not found or !$cat_id
*/
static function id2name($cat_id=0, $item='name')
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{
if(!$cat_id) return '--';
if (!$item) $item = 'parent';
if (is_null(self::$cache)) self::init_cache();
$cat = self::$cache[$cat_id];
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if ($item == 'path')
{
if ($cat['parent'])
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{
return self::id2name($cat['parent'],'path').' / '.$cat['name'];
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}
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$item = 'name';
}
if ($cat[$item])
{
return $cat[$item];
}
elseif ($item == 'name')
{
return '--';
}
return null;
}
/**
* return category name for a given id
*
* @deprecated This is only a temp wrapper, use id2name() to keep things matching across the board. (jengo)
* @param int $cat_id
* @return string cat_name category name
*/
function return_name($cat_id)
{
return $this->id2name($cat_id);
}
/**
* check if a category id and/or name exists, if id AND name are given the check is for a category with same name and different id (!)
*
* @param string $type subs or mains
* @param string $cat_name='' category name
* @param int $cat_id=0 category id
* @param int $parent=0 category id of parent
* @return int/boolean cat_id or false if cat not exists
*/
function exists($type,$cat_name = '',$cat_id = 0,$parent = 0)
{
if ($cat_name)
{
$filter['name'] = $cat_name;
if ($cat_id) $filter['id'] = '!'.(int)$cat_id;
}
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elseif ($cat_id)
{
$filter['id'] = $cat_id;
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}
if (!($cats = $this->return_array($type,0,false,'','','',true,$parent,-1,'id',$filter)))
{
$ret = false;
}
else
{
$ret = $cats[0];
}
//error_log(__METHOD__."($type,$cat_name,$cat_id,$parent) = ".$ret);
return $ret;
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}
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/**
* Change the owner of all cats owned by $owner to $to OR deletes them if !$to
*
* @param int $owner owner or the cats to delete or change
* @param int $to=0 new owner or 0 to delete the cats
* @param string $app='' if given only cats matching $app are modifed/deleted
*/
function change_owner($owner,$to=0,$app='')
{
$where = array('cat_owner' => $owner);
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if ($app) $where['cat_appname'] = $app;
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if ((int)$to)
{
$this->db->update(self::TABLE,array('cat_owner' => $to),$where,__LINE__,__FILE__);
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}
else
{
$this->db->delete(self::TABLE,$where,__LINE__,__FILE__);
}
// update cache accordingly
self::invalidate_cache();
}
/**
* Initialise or restore the categories cache
*
* We use the default ordering of return_array to avoid doing it again there
*
* @param array &$cache=null cache content to restore it (from the egw-object)
*/
public static function &init_cache(&$cache=null)
{
if (!is_null($cache))
{
//error_log(__METHOD__."() ".count($cache)." cats restored: ".function_backtrace());
return self::$cache =& $cache;
}
self::$cache = array();
// read all cats (cant use $this->db!)
foreach($GLOBALS['egw']->db->select(self::TABLE,'*',false,__LINE__,__FILE__,
false,'ORDER BY cat_main, cat_level, cat_name ASC') as $cat)
{
$cat = egw_db::strip_array_keys($cat,'cat_');
$cat['app_name'] = $cat['appname'];
// backlink children to their parent
if ($cat['parent'])
{
self::$cache[$cat['parent']]['children'][] = $cat['id'];
}
if (isset(self::$cache[$cat['id']]))
{
$cat['children'] = self::$cache[$cat['id']]['children'];
unset(self::$cache[$cat['id']]); // otherwise the order gets messed up!
}
self::$cache[$cat['id']] = $cat;
}
//error_log(__METHOD__."() cache initialised: ".function_backtrace());
return self::$cache;
}
/**
* Invalidate the cache
*
* Currently we dont care for $cat_id, as changing cats happens very infrequently and
* also changes child categories (!)
*
* @param int $cat_id concerned id or null for all cats
*/
public static function invalidate_cache($cat_id=null)
{
self::init_cache();
// we need to invalidate the whole session cache, as it stores our cache
egw::invalidate_session_cache();
}
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}