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https://github.com/EGroupware/egroupware.git
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708 lines
22 KiB
PHP
708 lines
22 KiB
PHP
<?php
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/**
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* EGroupware - eTemplate widget baseclass
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage api
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* @link http://www.egroupware.org
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* @author Ralf Becker <RalfBecker@outdoor-training.de>
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* @copyright 2002-11 by RalfBecker@outdoor-training.de
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* @version $Id$
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*/
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// include only widgets which can't be autoloaded (or contain sub-widgets which cant)
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require_once EGW_INCLUDE_ROOT.'/etemplate/inc/class.etemplate_widget_textbox.inc.php';
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require_once EGW_INCLUDE_ROOT.'/etemplate/inc/class.etemplate_widget_grid.inc.php';
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/**
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* eTemplate widget baseclass
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*
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* @todo text content, eg. the styles of a template are not parsed, thought they are not used here either
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* @todo validation: disabled attribute
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* - widget
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* - grid row
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* - grid column
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*/
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class etemplate_widget
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{
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/**
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* Widget type
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*
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* @var string
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*/
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public $type;
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/**
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* Widget id
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*
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* @var string
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*/
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public $id;
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/**
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* Widget attributes
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*
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* @var array
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*/
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public $attrs = array();
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/**
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* Children
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*
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* @var array
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*/
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protected $children = array();
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/**
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* (Array of) comma-separated list of legacy options to automatically replace when parsing with set_attrs
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*
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* @var string|array
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*/
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protected $legacy_options;
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/**
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* Request object of the currently created request
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*
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* It's a static variable as etemplates can contain further etemplates (rendered by a different object)
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*
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* @var etemplate_request
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*/
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static protected $request;
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/**
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* JSON response object, if we run via a JSON request
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*
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* @var egw_json_response
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*/
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static protected $response;
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/**
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* Constructor
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*
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* @param string|XMLReader $xml string with xml or XMLReader positioned on the element to construct
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* @throws egw_exception_wrong_parameter
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*/
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public function __construct($xml)
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{
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$reader = self::get_reader($xml);
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$this->type = $reader->name;
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$depth = $reader->depth;
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$this->id = $reader->getAttribute('id');
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// read all attributes
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$this->set_attrs($reader);
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while($reader->read() && $reader->depth > $depth)
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{
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if ($reader->nodeType == XMLReader::ELEMENT && $reader->depth > $depth)
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{
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$this->children[] = self::factory($reader->name, $reader, $reader->getAttribute('id'));
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}
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}
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}
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/**
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* Get XMLReader for given xml string
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*
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* @param string|XMLReader $xml string with xml or XMLReader positioned on an element
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* @throws egw_exception_wrong_parameter
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*/
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protected static function get_reader($xml)
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{
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if (is_a($xml, 'XMLReader'))
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{
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$reader = $xml;
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}
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else
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{
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$reader = new XMLReader();
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if (!$reader->XML($xml))
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{
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throw new egw_exception_wrong_parameter("Can't parse xml:\n$xml");
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}
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}
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return $reader;
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}
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/**
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* Parse and set extra attributes from xml in template object
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*
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* Returns a cloned template object, if any attribute needs to be set.
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* This is necessary as templates can be used multiple time, so we can not alter the cached template!
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*
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* @param string|XMLReader $xml
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* @param boolean $cloned=true true: object does NOT need to be cloned, false: to set attribute, set them in cloned object
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* @return etemplate_widget_template current object or clone, if any attribute was set
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*/
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public function set_attrs($xml, $cloned=true)
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{
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$reader = self::get_reader($xml);
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// check if we have to split legacy options (can be by type)
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$legacy_options = $this->legacy_options;
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if (is_array($legacy_options))
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{
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if (!($type = $reader->getAttribute('type')))
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{
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$type = $this->type;
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}
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$legacy_options = $legacy_options[$type];
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}
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// read and set all attributes
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$template = $this;
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while($reader->moveToNextAttribute())
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{
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if ($reader->name != 'id' && $template->attr[$reader->name] != $reader->value)
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{
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if (!$cloned) $template = clone($this);
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$template->attrs[$reader->name] = $reader->value;
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// split legacy options
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if ($legacy_options && $reader->name == 'options')
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{
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$legacy_options = explode(',', $legacy_options);
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foreach(self::csv_split($reader->value, count($legacy_options)) as $n => $val)
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{
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if ($legacy_options[$n] && (string)$val !== '') $template->attrs[$legacy_options[$n]] = $val;
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}
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}
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}
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}
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return $template;
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}
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/**
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* Split a $delimiter-separated options string, which can contain parts with delimiters enclosed in $enclosure
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*
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* Examples:
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* - csv_split('"1,2,3",2,3') === array('1,2,3','2','3')
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* - csv_split('1,2,3',2) === array('1','2,3')
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* - csv_split('"1,2,3",2,3',2) === array('1,2,3','2,3')
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* - csv_split('"a""b,c",d') === array('a"b,c','d') // to escape enclosures double them!
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*
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* @param string $str
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* @param int $num=null in how many parts to split maximal, parts over this number end up (unseparated) in the last part
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* @param string $delimiter=','
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* @param string $enclosure='"'
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* @return array
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*/
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public static function csv_split($str,$num=null,$delimiter=',',$enclosure='"')
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{
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if (strpos($str,$enclosure) === false)
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{
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return is_null($num) ? explode($delimiter,$str) : explode($delimiter,$str,$num); // no need to run this more expensive code
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}
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$parts = explode($delimiter,$str);
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for($n = 0; isset($parts[$n]); ++$n)
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{
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$part =& $parts[$n];
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if ($part[0] === $enclosure)
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{
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while (isset($parts[$n+1]) && substr($part,-1) !== $enclosure)
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{
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$part .= $delimiter.$parts[++$n];
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unset($parts[$n]);
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}
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$part = substr(str_replace($enclosure.$enclosure,$enclosure,$part),1,-1);
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}
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}
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$parts = array_values($parts); // renumber the parts (in case we had to concat them)
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if ($num > 0 && count($parts) > $num)
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{
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$parts[$num-1] = implode($delimiter,array_slice($parts,$num-1,count($parts)-$num+1));
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$parts = array_slice($parts,0,$num);
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}
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return $parts;
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}
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/**
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* Registry of classes implementing widgets
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*
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* @var array
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*/
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static protected $widget_registry = array();
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/**
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* Register a given class for certain widgets
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*
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* Registration is only needed if widget (base-)name is not autoloadable,
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* eg. class etemplate_widget_template does NOT need to be registered.
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*
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* @param string $class
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* @param string|array $widgets
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*/
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public static function registerWidget($class, $widgets)
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{
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foreach((array)$widgets as $widget)
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{
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self::$widget_registry[$widget] = $class;
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}
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}
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/**
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* Factory method to construct all widgets
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*
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* @param string $type
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* @param string|XMLReader $xml
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* @param string $id=null
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*/
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public static function factory($type, $xml, $id=null)
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{
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$class_name =& self::$widget_registry[$type];
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if (!isset($class_name))
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{
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list($basetype) = explode('-',$type);
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if (!class_exists($class_name = 'etemplate_widget_'.str_replace('-','_',$type)) &&
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!class_exists($class_name = 'etemplate_widget_'.str_replace('-','_',$basetype)))
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{
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// default to widget class, we can not ignore it, as the widget may contain other widgets
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$class_name = 'etemplate_widget';
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}
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}
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//error_log(__METHOD__."('$type', ..., '$id') using $class_name");
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// currently only overlays can contain templates, other widgets can only reference to templates via id
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if ($type == 'template' && $id && ($template = etemplate_widget_template::instance($id)))
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{
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// references can set different attributes like: class, span, content (namespace)
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return $template->set_attrs($xml, false); // false = need to clone template, if attributs are set!
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}
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return new $class_name($xml);
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}
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/**
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* Iterate over children to find the one with the given id and optional type
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*
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* @param string $id
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* @param string $type=null
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* @return etemplate_widget or NULL
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*/
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public function getElementById($id, $type=null)
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{
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foreach($this->children as $child)
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{
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if ($child->id === $id && (is_null($type) || $child->type === $type))
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{
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return $child;
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}
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if (($element = $child->getElementById($id, $type)))
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{
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return $element;
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}
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}
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return null;
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}
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/**
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* Run a given method on all children
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*
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* Default implementation only calls method on itself and run on all children
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*
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* @param string $method_name
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* @param array $params=array('') parameter(s) first parameter has to be the cname!
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* @param boolean $respect_disabled=false false (default): ignore disabled, true: method is NOT run for disabled widgets AND their children
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*/
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public function run($method_name, $params=array(''), $respect_disabled=false)
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{
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if ($respect_disabled && ($disabled = $this->attrs['disabled']))
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{
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// check if disabled contains @ or !
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$cname = $params[0];
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$disabled = self::check_disabled($disabled, $cname ? self::get_array(self::$request->content, $cname) : self::$request->content);
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if ($disabled)
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{
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error_log(__METHOD__."('$method_name', ".array2string($params).', '.array2string($respect_disabled).") $this disabled='{$this->attrs['disabled']}'='$disabled': NOT running");
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return;
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}
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}
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if (method_exists($this, $method_name))
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{
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call_user_func_array(array($this, $method_name), $params);
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}
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foreach($this->children as $child)
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{
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$child->run($method_name, $params, $respect_disabled);
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}
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}
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/**
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* Checks if a grid row or column is disabled
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*
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* Expression: [!][@]val[=[@]check]
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* Parts in square brackets are optional, a ! negates the expression, @val evaluates to $content['val']
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* if no =check is given all set non-empty and non-zero strings are true (standard php behavior)
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*
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* @param string $disabled expression to check, eg. "!@var" for !$content['var']
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* @param array $content the content-array in the context of the grid
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* @param int $row=null to be able to use $row or $row_content in value of checks
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* @param int $c=null to be able to use $row or $row_content in value of checks
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* @return boolean true if the row/col is disabled or false if not
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*/
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protected static function check_disabled($disabled,$content,$row=null,$c=null)
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{
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if ($not = $disabled[0] == '!')
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{
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$disabled = substr($disabled,1);
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}
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list($val,$check_val) = $vals = explode('=',$disabled);
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// use expand_name to be able to use @ or $
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$val = self::expand_name($val,$c,$row,'','',$content);
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$check_val = self::expand_name($check_val,$c,$row,'','',$content);
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$result = count($vals) == 1 ? $val != '' : ($check_val[0] == '/' ? preg_match($check_val,$val) : $val == $check_val);
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if ($not) $result = !$result;
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//error_log(__METHOD__."('".($not?'!':'')."$disabled' = '$val' ".(count($vals) == 1 ? '' : ($not?'!':'=')."= '$check_val'")." = ".($result?'True':'False'));
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return $result;
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}
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/**
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* Regular expression matching a PHP variable in a string, eg.
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*
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* "replies[$row][reply_message]" should only match $row
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* "delete[$row_cont[path]]" should match $row_cont[path]
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*/
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const PHP_VAR_PREG = '\$[A-Za-z0-9_]+(\[[A-Za-z0-9_]+\])*';
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/**
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* allows a few variables (eg. row-number) to be used in field-names
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*
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* This is mainly used for autorepeat, but other use is possible.
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* You need to be aware of the rules PHP uses to expand vars in strings, a name
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* of "Row$row[length]" will expand to 'Row' as $row is scalar, you need to use
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* "Row${row}[length]" instead. Only one indirection is allowd in a string by php !!!
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* Out of that reason we have now the variable $row_cont, which is $cont[$row] too.
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* Attention !!!
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* Using only number as index in field-names causes a lot trouble, as depending
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* on the variable type (which php determines itself) you used filling and later
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* accessing the array it can by the index or the key of an array element.
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* To make it short and clear, use "Row$row" or "$col$row" not "$row" or "$row$col" !!!
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*
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* @param string $name the name to expand
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* @param int $c is the column index starting with 0 (if you have row-headers, data-cells start at 1)
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* @param int $row is the row number starting with 0 (if you have col-headers, data-cells start at 1)
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* @param int $c_ is the value of the previous template-inclusion,
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* eg. the column-headers in the eTemplate-editor are templates itself,
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* to show the column-name in the header you can not use $col as it will
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* be constant as it is always the same col in the header-template,
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* what you want is the value of the previous template-inclusion.
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* @param int $row_ is the value of the previous template-inclusion,
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* @param array $cont content of the template, you might use it to generate button-names with id values in it:
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* "del[$cont[id]]" expands to "del[123]" if $cont = array('id' => 123)
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* @return string the expanded name
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*/
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protected static function expand_name($name,$c,$row,$c_='',$row_='',$cont='')
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{
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$is_index_in_content = $name[0] == '@';
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if (($pos_var=strpos($name,'$')) !== false)
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{
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if (!$cont)
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{
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$cont = array();
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}
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if (!is_numeric($c)) $c = boetemplate::chrs2num($c);
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$col = boetemplate::num2chrs($c-1); // $c-1 to get: 0:'@', 1:'A', ...
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$col_ = boetemplate::num2chrs($c_-1);
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$row_cont = $cont[$row];
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$col_row_cont = $cont[$col.$row];
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// check if name is enclosed in single quotes as argument eg. to an event handler or
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// variable name is contained in quotes and curly brackets, eg. "'{$cont[nm][path]}'" or
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// used as name for a button like "delete[$row_cont[something]]" --> quote contained quotes (' or ")
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if (in_array($name[$pos_var-1],array('[',"'",'{')) && preg_match('/[\'\[]{?('.self::PHP_VAR_PREG.')}?[\'\]]+/',$name,$matches))
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{
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eval('$value = '.$matches[1].';');
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if (is_array($value) && $name[$pos_var-1] == "'") // arrays are only supported for '
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{
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foreach($value as &$val)
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{
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$val = "'".str_replace(array("'",'"'),array('\\\'','"'),$val)."'";
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}
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$value = '[ '.implode(', ',$value).' ]';
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$name = str_replace("'".$matches[1]."'",$value,$name);
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}
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else
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{
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$value = str_replace(array("'",'"'),array('\\\'','"'),$value);
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$name = str_replace(array('{'.$matches[1].'}',$matches[1]),$value,$name);
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}
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}
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// check if name is assigned in an url --> urlendcode contained & as %26, as egw::link explodes it on &
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if ($name[$pos_var-1] == '=' && preg_match('/[&?]([A-Za-z0-9_]+(\[[A-Za-z0-9_]+\])*)=('.self::PHP_VAR_PREG.')/',$name,$matches))
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{
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eval('$value = '.$matches[3].';');
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if (is_array($value)) // works only reasonable, if get-parameter uses array notation, eg. &file[]=$cont[filenames]
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{
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foreach($value as &$val)
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{
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$val = str_replace('&',urlencode('&'),$val);
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}
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$name = str_replace($matches[3],implode('&'.$matches[1].'=',$value),$name);
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}
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else
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{
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$value = str_replace('&',urlencode('&'),$value);
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$name = str_replace($matches[3],$value,$name);
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}
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}
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eval('$name = "'.str_replace('"','\\"',$name).'";');
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}
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if ($is_index_in_content)
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{
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if ($name[1] == '@')
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{
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$name = self::get_array(self::$request->content,substr($name,2));
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}
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else
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{
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$name = self::get_array($cont,substr($name,1));
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}
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}
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return $name;
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}
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/**
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* Convert object to string
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*
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* @return string
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*/
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public function __toString()
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{
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return $this->type.($this->attrs['type'] && $this->attrs['type'] != $this->type ? '('.$this->attrs['type'].')' : '').'#'.$this->id;
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}
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/**
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* Convert widget (incl. children) to xml
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*
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* @param string $indent=''
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* @return string
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*/
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public function toXml($indent='')
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{
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echo "$indent<$this->type";
|
|
if ($this->id) echo ' id="'.htmlspecialchars($this->id).'"';
|
|
foreach($this->attrs as $name => $value)
|
|
{
|
|
if ($name == 'options' && $this->legacy_options && (!is_array($this->legacy_options) ||
|
|
isset($this->legacy_options[$this->attrs['type'] ? $this->attrs['type'] : $this->type])))
|
|
{
|
|
continue; // do NOT output already converted legacy options
|
|
}
|
|
echo ' '.$name.'="'.htmlspecialchars($value).'"';
|
|
}
|
|
echo ' php-class="'.get_class($this).'"';
|
|
|
|
if ($this->children)
|
|
{
|
|
echo ">\n";
|
|
foreach($this->children as $child)
|
|
{
|
|
$child->toXml($indent."\t");
|
|
}
|
|
echo "$indent</$this->type>\n";
|
|
}
|
|
else
|
|
{
|
|
echo " />\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* build the name of a form-element from a basename and name
|
|
*
|
|
* name and basename can contain sub-indices in square bracets, eg. basename="base[basesub1][basesub2]"
|
|
* and name = "name[sub]" gives "base[basesub1][basesub2][name][sub]"
|
|
*
|
|
* @param string $cname basename
|
|
* @param string $name name
|
|
* @return string complete form-name
|
|
*/
|
|
static function form_name($cname,$name)
|
|
{
|
|
$name_parts = explode('[',str_replace(']','',$name));
|
|
if (!empty($cname))
|
|
{
|
|
array_unshift($name_parts,$cname);
|
|
}
|
|
$form_name = array_shift($name_parts);
|
|
if (count($name_parts))
|
|
{
|
|
$form_name .= '['.implode('][',$name_parts).']';
|
|
}
|
|
return $form_name;
|
|
}
|
|
|
|
/**
|
|
* return a reference to $arr[$idx]
|
|
*
|
|
* This works for non-trival indexes like 'a[b][c]' too: it returns &$arr[a][b][c]
|
|
* $sub = get_array($arr,'a[b]'); $sub = 'c'; is equivalent to $arr['a']['b'] = 'c';
|
|
*
|
|
* @param array $arr the array to search, referenz as a referenz gets returned
|
|
* @param string $idx the index, may contain sub-indices like a[b], see example below
|
|
* @param boolean $reference_into default False, if True none-existing sub-arrays/-indices get created to be returned as referenz, else False is returned
|
|
* @param bool $skip_empty returns false if $idx is not present in $arr
|
|
* @return mixed reference to $arr[$idx] or false if $idx is not set and not $reference_into
|
|
*/
|
|
static function &get_array(&$arr,$idx,$reference_into=False,$skip_empty=False)
|
|
{
|
|
if (!is_array($arr))
|
|
{
|
|
throw new egw_exception_assertion_failed(__METHOD__."(\$arr,'$idx',$reference_into,$skip_empty) \$arr is no array!");
|
|
}
|
|
if (is_object($idx)) return false; // given an error in php5.2
|
|
|
|
$idxs = explode('[',str_replace(']','',$idx));
|
|
$pos = &$arr;
|
|
foreach($idxs as $idx)
|
|
{
|
|
if (!is_array($pos) && !$reference_into)
|
|
{
|
|
return False;
|
|
}
|
|
if($skip_empty && (!is_array($pos) || !isset($pos[$idx]))) return false;
|
|
$pos = &$pos[$idx];
|
|
}
|
|
return $pos;
|
|
}
|
|
|
|
/**
|
|
* Checks if a widget is readonly:
|
|
* - readonly attribute set
|
|
* - $readonlys[__ALL__] set and $readonlys[$form_name] !== false
|
|
* - $readonlys[$form_name] evaluates to true
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function is_readonly($cname='')
|
|
{
|
|
$form_name = self::form_name($cname, $this->id);
|
|
|
|
$readonly = $this->attrs['readonly'] || self::$request->readonlys[$form_name] ||
|
|
isset(self::$request->readonlys['__ALL__']) && self::$request->readonlys[$form_name] !== false;
|
|
|
|
//error_log(__METHOD__."('$cname') this->id='$this->id' --> form_name='$form_name' returning ".array2string($readonly));
|
|
return $readonly;
|
|
}
|
|
/**
|
|
* Validation errors from process_show and the extensions, should be set via etemplate::set_validation_error
|
|
*
|
|
* @public array form_name => message pairs
|
|
*/
|
|
static protected $validation_errors = array();
|
|
|
|
/**
|
|
* Sets a validation error, to be displayed in the next exec
|
|
*
|
|
* @param string $name (complete) name of the widget causing the error
|
|
* @param string|boolean $error error-message already translated or false to reset all existing error for given name
|
|
* @param string $cname=null set it to '', if the name is already a form-name, defaults to self::$name_vars
|
|
*/
|
|
public static function set_validation_error($name,$error,$cname=null)
|
|
{
|
|
// not yet used: if (is_null($cname)) $cname = self::$name_vars;
|
|
error_log(__METHOD__."('$name','$error','$cname')");
|
|
|
|
if ($cname) $name = self::form_name($cname,$name);
|
|
|
|
if ($error === false)
|
|
{
|
|
unset(self::$validation_errors[$name]);
|
|
}
|
|
else
|
|
{
|
|
if (self::$validation_errors[$name])
|
|
{
|
|
self::$validation_errors[$name] .= ', ';
|
|
}
|
|
self::$validation_errors[$name] .= $error;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if we have not ignored validation errors
|
|
*
|
|
* @param string $ignore_validation='' if not empty regular expression for validation-errors to ignore
|
|
* @param string $cname=null name-prefix, which need to be ignored, default self::$name_vars
|
|
* @return boolean true if there are not ignored validation errors, false otherwise
|
|
*/
|
|
public static function validation_errors($ignore_validation='',$cname='')
|
|
{
|
|
// not yet used: if (is_null($cname)) $cname = self::$name_vars;
|
|
//echo "<p>uietemplate::validation_errors('$ignore_validation','$cname') validation_error="; _debug_array(self::$validation_errors);
|
|
if (!$ignore_validation) return count(self::$validation_errors) > 0;
|
|
|
|
foreach(self::$validation_errors as $name => $error)
|
|
{
|
|
if ($cname) $name = preg_replace('/^'.$cname.'\[([^\]]+)\](.*)$/','\\1\\2',$name);
|
|
|
|
// treat $ignoare_validation only as regular expression, if it starts with a slash
|
|
if ($ignore_validation[0] == '/' && !preg_match($ignore_validation,$name) ||
|
|
$ignore_validation[0] != '/' && $ignore_validation != $name)
|
|
{
|
|
//echo "<p>uietemplate::validation_errors('$ignore_validation','$cname') name='$name' ($error) not ignored!!!</p>\n";
|
|
return true;
|
|
}
|
|
//echo "<p>uietemplate::validation_errors('$ignore_validation','$cname') name='$name' ($error) ignored</p>\n";
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* *box widgets having an own namespace
|
|
*/
|
|
class etemplate_widget_box extends etemplate_widget
|
|
{
|
|
/**
|
|
* (Array of) comma-separated list of legacy options to automatically replace when parsing with set_attrs
|
|
*
|
|
* @var string|array
|
|
*/
|
|
protected $legacy_options = array(
|
|
'box' => ',cellpadding,cellspacing,keep',
|
|
'hbox' => 'cellpadding,cellspacing,keep',
|
|
'vbox' => 'cellpadding,cellspacing,keep',
|
|
'groupbox' => 'cellpadding,cellspacing,keep',
|
|
);
|
|
|
|
/**
|
|
* Run a given method on all children
|
|
*
|
|
* Reimplemented because grids and boxes can have an own namespace
|
|
*
|
|
* @param string $method_name
|
|
* @param array $params=array('') parameter(s) first parameter has to be cname!
|
|
* @param boolean $respect_disabled=false false (default): ignore disabled, true: method is NOT run for disabled widgets AND their children
|
|
*/
|
|
public function run($method_name, $params=array(''), $respect_disabled=false)
|
|
{
|
|
$cname =& $params[0];
|
|
if ($this->id) $cname = self::form_name($cname, $this->id);
|
|
|
|
parent::run($method_name, $params, $respect_disabled);
|
|
}
|
|
}
|
|
// register class for layout widgets, which can have an own namespace
|
|
etemplate_widget::registerWidget('etemplate_widget_box', array('box', 'hbox', 'vbox', 'groupbox'));
|
|
|
|
/**
|
|
* Describtion widget
|
|
*
|
|
* Reimplemented to set legacy options
|
|
*/
|
|
class etemplate_widget_description extends etemplate_widget
|
|
{
|
|
/**
|
|
* (Array of) comma-separated list of legacy options to automatically replace when parsing with set_attrs
|
|
*
|
|
* @var string|array
|
|
*/
|
|
protected $legacy_options = 'bold-italic,link,activate_links,label_for,link_target,link_popup_size,link_title';
|
|
}
|