egroupware_official/etemplate/inc/class.etemplate_widget_nextmatch.inc.php

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<?php
/**
* EGroupware - eTemplate serverside implementation of the nextmatch widget
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Ralf Becker <RalfBecker@outdoor-training.de>
* @copyright 2002-11 by RalfBecker@outdoor-training.de
* @version $Id$
*/
/**
* eTemplate serverside implementation of the nextmatch widget
*
* $content[$id] = array( // I = value set by the app, 0 = value on return / output
* 'get_rows' => // I method/callback to request the data for the rows eg. 'notes.bo.get_rows'
* 'filter_label' => // I label for filter (optional)
* 'filter_help' => // I help-msg for filter (optional)
* 'no_filter' => True// I disable the 1. filter
* 'no_filter2' => True// I disable the 2. filter (params are the same as for filter)
* 'no_cat' => True// I disable the cat-selectbox
* 'cat_app' => // I application the cat's should be from, default app in get_rows
* 'cat_is_select' => // I true||'no_lang' use selectbox instead of category selection, default null
* 'template' => // I template to use for the rows, if not set via options
* 'header_left' => // I template to show left of the range-value, left-aligned (optional)
* 'header_right' => // I template to show right of the range-value, right-aligned (optional)
* 'bottom_too' => True// I show the nextmatch-line (arrows, filters, search, ...) again after the rows
* 'never_hide' => True// I never hide the nextmatch-line if less then maxmatch entries
* 'lettersearch' => True// I show a lettersearch
* 'searchletter' => // I0 active letter of the lettersearch or false for [all]
* 'start' => // IO position in list
* 'num_rows' => // IO number of rows to show, defaults to maxmatches from the general prefs
* 'cat_id' => // IO category, if not 'no_cat' => True
* 'search' => // IO search pattern
* 'order' => // IO name of the column to sort after (optional for the sortheaders)
* 'sort' => // IO direction of the sort: 'ASC' or 'DESC'
* 'col_filter' => // IO array of column-name value pairs (optional for the filterheaders)
* 'filter' => // IO filter, if not 'no_filter' => True
* 'filter_no_lang' => True// I set no_lang for filter (=dont translate the options)
* 'filter_onchange'=> 'this.form.submit();' // I onChange action for filter, default: this.form.submit();
* 'filter2' => // IO filter2, if not 'no_filter2' => True
* 'filter2_no_lang'=> True// I set no_lang for filter2 (=dont translate the options)
* 'filter2_onchange'=> 'this.form.submit();' // I onChange action for filter2, default: this.form.submit();
* 'rows' => // O content set by callback
* 'total' => // O the total number of entries
* 'sel_options' => // O additional or changed sel_options set by the callback and merged into $tmpl->sel_options
* 'no_columnselection' => // I turns off the columnselection completly, turned on by default
* 'columnselection-pref' => // I name of the preference (plus 'nextmatch-' prefix), default = template-name
* 'default_cols' => // I columns to use if there's no user or default pref (! as first char uses all but the named columns), default all columns
* 'options-selectcols' => // I array with name/label pairs for the column-selection, this gets autodetected by default. A name => false suppresses a column completly.
* 'return' => // IO allows to return something from the get_rows function if $query is a var-param!
* 'csv_fields' => // I false=disable csv export, true or unset=enable it with auto-detected fieldnames or preferred importexport definition,
* array with name=>label or name=>array('label'=>label,'type'=>type) pairs (type is a eT widget-type)
* or name of import/export definition
* 'row_id' => // I key into row content to set it's value as tr id, eg. 'id'
* 'actions' => // I array with actions, see nextmatch_widget::egw_actions
* 'action_links' => // I array with enabled actions or ones which should be checked if they are enabled
* optional, default id of all first level actions plus the ones with enabled='javaScript:...'
* 'action_var' => 'action' // I name of var to return choosen action, default 'action'
* 'action' => // O string selected action
* 'selected' => // O array with selected id's
* 'checkboxes' => // O array with checkbox id as key and boolean checked value
* 'select_all' => // O boolean value of select_all checkbox, reference to above value for key 'select_all'
*/
class etemplate_widget_nextmatch extends etemplate_widget
{
public function __construct($xml='')
{
if($xml) {
parent::__construct($xml);
// TODO: probably a better way to do this
egw_framework::includeCSS('/phpgwapi/js/egw_action/test/skins/dhtmlxmenu_egw.css');
}
}
/**
* Number of rows to send initially
*/
const INITIAL_ROWS = 25;
/**
* Set up what we know on the server side.
*
* Sending a first chunk of rows
*
* @param string $cname
*/
public function beforeSendToClient($cname)
{
$attrs = $this->attrs;
$form_name = self::form_name($cname, $this->id);
$value =& self::get_array(self::$request->content, $form_name, true);
$value['start'] = 0;
$value['num_rows'] = self::INITIAL_ROWS;
$value['total'] = self::call_get_rows($value, $value['rows'], self::$request->readonlys);
// todo: no need to store rows in request, it's enought to send them to client
error_log(__METHOD__."() $this: total=$value[total]");
foreach($value['rows'] as $n => $row) error_log("$n: ".array2string($row));
}
/**
* Callback to fetch more rows
*
* @param string $exec_id identifys the etemplate request
* @param array $fetchList array of array with values for keys "startIdx" and "count"
* @param string full id of widget incl. all namespaces
* @return array with values for keys 'total', 'rows', 'readonlys'
*/
static public function ajax_get_rows($exec_id, $fetchList, $form_name='nm')
{
error_log(__METHOD__."($exec_id,".array2string($fetchList).",$form_name)");
// Force the array to be associative
self::$request = etemplate_request::read($exec_id);
$value = self::get_array(self::$request->content, $form_name, true);
$result = array('rows' => array());
foreach ($fetchList as $entry)
{
$value['start'] = $entry['startIdx'];
$value['num_rows'] = $entry['count'];
$rows = array();
$result['total'] = self::call_get_rows($value, $rows, $result['readonlys']);
foreach($rows as $n => $row)
{
$result['rows'][$entry['startIdx']+$n] = $row;
}
}
$response = egw_json_response::get();
$response->data($result);
}
/**
* Calling our callback
*
* Signature of get_rows callback is either:
* a) int get_rows($query,&$rows,&$readonlys)
* b) int get_rows(&$query,&$rows,&$readonlys)
*
* If get_rows is called static (and php >= 5.2.3), it is always b) independent on how it's defined!
*
* @param array &$value
* @param array &$rows=null
* @param array &$readonlys=null
* @param object $obj=null (internal)
* @param string|array $method=null (internal)
* @return int|boolean total items found of false on error ($value['get_rows'] not callable)
*/
private static function call_get_rows(array &$value,array &$rows=null,array &$readonlys=null,$obj=null,$method=null)
{
if (is_null($method)) $method = $value['get_rows'];
if (is_null($obj))
{
// allow static callbacks
if(strpos($method,'::') !== false)
{
list($class,$method) = explode('::',$method);
// workaround for php < 5.2.3: do NOT call it static, but allow application code to specify static callbacks
if (version_compare(PHP_VERSION,'5.2.3','>='))
{
$method = array($class,$method);
unset($class);
}
}
else
{
list($app,$class,$method) = explode('.',$value['get_rows']);
}
if ($class)
{
if (!$app && !is_object($GLOBALS[$class]))
{
$GLOBALS[$class] = new $class();
}
if (is_object($GLOBALS[$class])) // use existing instance (put there by a previous CreateObject)
{
$obj = $GLOBALS[$class];
}
else
{
$obj = CreateObject($app.'.'.$class);
}
}
}
if(is_callable($method)) // php5.2.3+ static call (value is always a var param!)
{
$total = call_user_func_array($method,array(&$value,&$rows,&$readonlys));
}
elseif(is_object($obj) && method_exists($obj,$method))
{
if (!is_array($readonlys)) $readonlys = array();
$total = $obj->$method($value,$rows,$readonlys);
}
else
{
$total = false; // method not callable
}
/* no automatic fallback to start=0
if ($method && $total && $value['start'] >= $total)
{
$value['start'] = 0;
$total = self::call_get_rows($value,$rows,$readonlys,$obj,$method);
}
*/
// otherwise we get stoped by max_excutiontime
if ($total > 200) @set_time_limit(0);
// remove empty rows required by old etemplate to compensate for header rows
foreach($rows as $n => $row)
{
if (is_array($row)) break;
unset($rows[$n]);
}
$rows = array_values($rows); // renumber keys to be 0 based
//error_log($value['get_rows'].'() returning '.array2string($total).', method = '.array2string($method).', value = '.array2string($value));
return $total;
}
}