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egroupware_official/etemplate/inc/class.etemplate_widget_grid.inc.php

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<?php
/**
* EGroupware - eTemplate serverside grid 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 2002-14 by RalfBecker@outdoor-training.de
* @version $Id$
*/
/**
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* eTemplate grid widget incl. row(s) and column(s)
*
* Example of a grid containing 3 columns and 2 rows (last one autorepeated)
*
* <grid>
* <columns>
* <column>
* <column width="75%">
* <column disabled="@no_actions">
* </columns>
* <rows>
* <row>
* <description value="ID" />
* <description value="Text" />
* <description value="Action" />
* <row>
* <row>
* <description id="${row}[id]" />
* <textbox id="${row}[text]" />
* <button id="delete[$row_cont[id]]" value="Delete" />
* </row>
* </rows>
* </grid>
*/
class etemplate_widget_grid extends etemplate_widget_box
{
/**
* (Array of) comma-separated list of legacy options to automatically replace when parsing with set_attrs
*
* Not used for grid, just need to be set to unset array of etemplate_widget_box
*
* @var string|array
*/
protected $legacy_options = null;
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/**
* Run a given method on all children
*
* Reimplemented to implement column based disabling:
* - added 5th var-parameter to hold key of disabled column
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* - if a column is disabled run returns false and key get added by columns run to $columns_disabled
* - row run method checks now for each child (arbitrary widget) if it the column's key is included in $columns_disabled
* - as a grid can contain other grid's as direct child, we have to backup and initialise $columns_disabled in grid run!
*
* @param string $method_name
* @param array $params=array('') parameter(s) first parameter has to be the cname, second $expand!
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* @param boolean $respect_disabled=false false (default): ignore disabled, true: method is NOT run for disabled widgets AND their children
* @param array $columns_disabled=array() disabled columns
*/
public function run($method_name, $params=array(''), $respect_disabled=false, &$columns_disabled=array())
{
// maintain $expand array name-expansion
$cname =& $params[0];
$expand =& $params[1];
$old_cname = $params[0];
$old_expand = $params[1];
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// as a grid can contain other grid's as direct child, we have to backup and initialise $columns_disabled
if ($this->type == 'grid')
{
$backup_columns_disabled = $columns_disabled;
$columns_disabled = array();
}
if ($respect_disabled && ($disabled = $this->attrs['disabled'] && self::check_disabled($this->attrs['disabled'], $expand)))
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{
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//error_log(__METHOD__."('$method_name', ".array2string($params).', '.array2string($respect_disabled).") $this disabled='{$this->attrs['disabled']}'=".array2string($disabled).": NOT running");
$params[0] = $old_cname;
$params[1] = $old_expand;
return false; // return
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}
if ($this->id) $cname = self::form_name($cname, $this->id, $expand);
if ($expand['cname'] !== $cname && $cname)
{
$expand['cont'] =& self::get_array(self::$request->content, $cname);
$expand['cname'] = $cname;
}
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if (method_exists($this, $method_name))
{
call_user_func_array(array($this, $method_name), $params);
}
//foreach($this->children as $n => $child)
$repeat_child = null;
for($n = 0; ; ++$n)
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{
// maintain $expand array name-expansion
switch($this->type)
{
case 'rows':
$expand['row'] = $n;
break;
case 'columns':
$expand['c'] = $n;
break;
}
if (isset($this->children[$n]))
{
$child = $this->children[$n];
if($this->type == 'rows' || $this->type == 'columns')
{
/*
* We store a clone of the repeated child, because at the end
* of this loop the function $method_name is run on $child.
* We want to run the function again each repeat, on an unmodified
* row / column.
*/
$repeat_child = clone $child;
}
}
// check if we need to autorepeat last row ($child)
elseif (isset($child) && ($this->type == 'rows' || $this->type == 'columns') && $child->need_autorepeat($cname, $expand))
{
// not breaking repeats last row/column ($child)
// Clone the repeating child, to avoid modifying it
$child = clone $repeat_child;
}
else
{
break;
}
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if ($this->type == 'row')
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{
if (in_array($n, $columns_disabled))
{
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//error_log(__METHOD__."('$method_name', ".array2string($params).', '.array2string($respect_disabled).") $this column $n is disabled: NOT running");
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continue; // do NOT run $method_name on disabled columns
}
}
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//error_log('Running ' . $method_name . ' on child ' . $n . '(' . $child . ') ['.$expand['row'] . ','.$expand['c'] . ']');
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$disabled = $child->run($method_name, $params, $respect_disabled, $columns_disabled) === false;
if ($this->type == 'columns' && $disabled)
{
$columns_disabled[] = $n; // mark column as disabled
}
}
if ($this->type == 'grid')
{
$columns_disabled = $backup_columns_disabled;
}
$params[0] = $old_cname;
$params[1] = $old_expand;
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return true;
}
/**
* Check if a row or column needs autorepeating, because still content left
*
* We only check direct children and grandchildren of first child (eg. box in first column)!
*
* @param string $cname
* @param array $expand
*/
private function need_autorepeat($cname, array $expand)
{
// check id's of children
foreach($this->children as $n => $direct_child)
{
foreach(array_merge(array($direct_child), $n ? array() : $direct_child->children) as $child)
{
$pat = $child->id;
while(($pat = strstr($pat, '$')))
{
$pat = substr($pat,$pat[1] == '{' ? 2 : 1);
switch ($this->type)
{
case 'column':
$Ok = $pat[0] == 'c' && !(substr($pat,0,4) == 'cont' || substr($pat,0,2) == 'c_' ||
substr($pat,0,4) == 'col_');
break;
case 'row':
$Ok = $pat[0] == 'r' && !(substr($pat,0,2) == 'r_' ||
substr($pat,0,4) == 'row_' && substr($pat,0,8) != 'row_cont');
//error_log(__METHOD__."() pat='$pat' --> Ok=".array2string($Ok));
break;
default:
return false;
}
if ($Ok && ($fname=self::form_name($cname, $child->id, $expand)) &&
// need to break if fname ends in [] as get_array() will ignore it and returns whole array
// for an id like "run[$row_cont[appname]]"
substr($fname, -2) != '[]' &&
($value = self::get_array(self::$request->content,$fname)) !== null) // null = not found (can be false!)
{
//error_log(__METHOD__."('$cname', ) $this autorepeating row $expand[row] because of $child->id = '$fname' is ".array2string($value));
return true;
}
}
}
}
//error_log(__METHOD__."('$cname', ) $this NOT autorepeating row $expand[row]");
return false;
}
}
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etemplate_widget::registerWidget('etemplate_widget_grid', array('grid', 'rows', 'row', 'columns', 'column'));