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col_picker_helper.php
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Wed, May 21, 1:23 AM

col_picker_helper.php
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<?php
/**
* @version $Id: col_picker_helper.php 12306 2009-08-17 02:35:55Z dmitrya $
* @package In-Portal
* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
* @license GNU/GPL
* In-Portal is Open Source software.
* This means that this software may have been modified pursuant
* the GNU General Public License, and as distributed it includes
* or is derivative of works licensed under the GNU General Public License
* or other free or open source software licenses.
* See http://www.in-portal.net/license/ for copyright notices and details.
*/
defined('FULL_PATH') or die('restricted access!');
class kColumnPickerHelper extends kHelper {
var $PickerData;
var $GridName;
var $UseFreezer;
function Init($prefix,$special,$event_params=null)
{
parent::Init($prefix, $special, $event_params);
$this->UseFreezer = $this->Application->ConfigValue('UseColumnFreezer');
}
function LoadColumns($prefix)
{
$view_name = $this->Application->RecallVar($prefix.'_current_view');
$val = $this->Application->RecallPersistentVar($prefix.'_columns_.'.$view_name, ALLOW_DEFAULT_SETTINGS);
if (!$val) {
$cols = $this->RebuildColumns($prefix);
}
else {
$cols = unserialize($val);
$current_cols = $this->GetColumns($prefix);
if ($cols === false || $cols['crc'] != $current_cols['crc'])
{
$cols = $this->RebuildColumns($prefix, $cols);
}
}
return $cols;
}
function PreparePicker($prefix, $grid_name)
{
$this->SetGridName($grid_name);
$this->PickerData = $this->LoadColumns($prefix);
}
function ApplyPicker($prefix, &$fields, $grid_name)
{
$this->PreparePicker($prefix, $grid_name);
uksort($fields, array($this, 'CmpElems'));
$this->RemoveHiddenColumns($fields);
}
function SetGridName($grid_name)
{
$this->GridName = $grid_name;
}
function CmpElems($a, $b)
{
$a_index = array_search($a, $this->PickerData['order']);
$b_index = array_search($b, $this->PickerData['order']);
if ($a_index == $b_index) {
return 0;
}
return ($a_index < $b_index) ? -1 : 1;
}
function RebuildColumns($prefix, $current=null)
{
$cols = $this->GetColumns($prefix);
if (is_array($current)) {
//get common fields both in db and xml
$common = array_intersect($current['order'], $cols['order']);
//get added columns - present in xml, but not in db
$added = array_diff($cols['order'], $current['order']);
if (in_array('__FREEZER__', $added)) {
array_unshift($common, '__FREEZER__');
unset($added[array_search('__FREEZER__', $added)]);
}
$cols['order'] = array_merge($common, $added);
$cols['hidden_fields'] = array_intersect($current['order'], $current['hidden_fields']);
foreach($common as $col) {
$cols['widths'][$col] = isset($current['widths'][$col]) ? $current['widths'][$col] : 100;
}
$this->SetCRC($cols);
}
$this->StoreCols($prefix, $cols);
return $cols;
}
function StoreCols($prefix, $cols)
{
$view_name = $this->Application->RecallVar($prefix.'_current_view');
$this->Application->StorePersistentVar($prefix.'_columns_.'.$view_name, serialize($cols));
}
function GetColumns($prefix)
{
$splited = $this->Application->processPrefix($prefix);
$grids = $this->Application->getUnitOption($splited['prefix'], 'Grids');
$conf_fields = $this->UseFreezer ? array_merge_recursive(
array('__FREEZER__' => array('title' => '__FREEZER__')),
$grids[$this->GridName]['Fields']
) : $grids[$this->GridName]['Fields'];
// $conf_fields = $grids[$this->GridName]['Fields'];
// we NEED to recall dummy here to apply fields changes imposed by formatters,
// such as replacing multilingual field titles etc.
$dummy =& $this->Application->recallObject($prefix, null, array('skip_autoload'=>1));
$counter = 0;
$hidden = array();
$fields = array();
$titles = array();
$widths = array();
foreach ($conf_fields as $name => $options) {
$fields[$counter] = $name;
$titles[$name] = $options['title'];
$widths[$name] = array_key_exists('width', $options) ? $options['width'] : 100; // only once per grid !
if (isset($options['hidden']) && $options['hidden'])
{
$hidden[$counter] = $name;
}
$counter++;
}
$sorted_fields = $fields;
sort($sorted_fields);
$cols = array(
'order' => $fields,
'titles' => $titles,
'hidden_fields' => $hidden,
'widths' => $widths,
);
$this->SetCRC($cols);
return $cols;
}
function SetCRC(&$cols)
{
$sorted_fields = $cols['order'];
$sorted_titles = $cols['titles'];
asort($sorted_fields);
asort($sorted_titles);
$cols['crc'] = crc32(implode(',', $sorted_fields).implode(',', $sorted_titles));
}
function RemoveHiddenColumns(&$fields)
{
$to_remove = array();
foreach ($fields as $name => $options) {
if (array_search($name, $this->PickerData['hidden_fields']) !== false) {
$to_remove[] = $name;
}
}
foreach ($to_remove as $name) {
unset($fields[$name]);
}
}
function SaveColumns($prefix, $picked, $hidden)
{
$order = $picked ? explode('|', $picked) : array();
$hidden = $hidden ? explode('|', $hidden) : array();
$order = array_merge($order, $hidden);
$cols = $this->LoadColumns($prefix);
$cols['order'] = $order;
$cols['hidden_fields'] = $hidden;
$this->SetCRC($cols);
$this->StoreCols($prefix, $cols);
}
function SaveWidths($prefix, $widths)
{
if (!is_array($widths)) $widths = explode(':', $widths);
array_shift($widths); // removing first col (checkbox col) width
$i = 0;
foreach ($this->PickerData['order'] as $ord => $field) {
if ($field == '__FREEZER__') continue;
$this->PickerData['widths'][$field] = $widths[$i++];
}
$this->StoreCols($prefix, $this->PickerData);
}
function GetWidth($field)
{
return isset($this->PickerData['widths'][$field]) ? $this->PickerData['widths'][$field] : false;
}
}

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