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<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery |
// | Copyright (C) 2006-2007 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch : BSF (Best So Far)
// | file : $Id$
// | last update : $Date$
// | last modifier : $Author$
// | revision : $Revision$
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify |
// | it under the terms of the GNU General Public License as published by |
// | the Free Software Foundation |
// | |
// | This program is distributed in the hope that it will be useful, but |
// | WITHOUT ANY WARRANTY; without even the implied warranty of |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
// | General Public License for more details. |
// | |
// | You should have received a copy of the GNU General Public License |
// | along with this program; if not, write to the Free Software |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA. |
// +-----------------------------------------------------------------------+
// global variable for filter
$filter = array();
// $filter['enabled']: Filter is enabled
// $filter['categories']: Computed data of filtered categories
// $filter['visible_categories']: List of visible categories (count(visible) < count(forbidden) more often)
// $filter['visible_images']: List of visible images
$filter['enabled'] = false;
if (in_array(script_basename(), $conf['filter_pages']))
{ // valid only on certain pages
if (isset($_GET['filter']))
{
$filter['enabled'] = ($_GET['filter'] == 'start');
if ( !$filter['enabled'] )
{
pwg_unset_session_var('filter_enabled');
pwg_unset_session_var('filter_check_key');
pwg_unset_session_var('filter_categories');
pwg_unset_session_var('filter_visible_categories');
pwg_unset_session_var('filter_visible_images');
}
}
else
{
$filter['enabled'] = pwg_get_session_var('filter_enabled', false);
}
if ($filter['enabled'])
{
if (
// New filter
!pwg_get_session_var('filter_enabled', false) or
// Cache data updated
$user['need_update_done'] or
// Date, period, user are changed
(pwg_get_session_var('filter_check_key', '') != get_filter_check_key())
)
{
// Need to compute dats
$filter['check_key'] = get_filter_check_key();
$filter['categories'] = get_computed_categories($user['id'], $user['forbidden_categories'], true, $user['recent_period']);
$filter['visible_categories'] = implode(',', array_keys($filter['categories']));
if (empty($filter['visible_categories']))
{
// Must be not empty
$filter['visible_categories'] = -1;
}
$query ='
SELECT DISTINCT(image_id)
FROM '.
IMAGE_CATEGORY_TABLE.' INNER JOIN '.IMAGES_TABLE.' ON image_id = id
WHERE ';
if (!empty($filter['visible_categories']))
{
$query.= '
category_id IN ('.$filter['visible_categories'].') AND';
}
$query.= '
date_available > SUBDATE(
CURRENT_DATE,INTERVAL '.$user['recent_period'].' DAY)';
$filter['visible_images'] = implode(',', array_from_query($query, 'image_id'));
if (empty($filter['visible_images']))
{
// Must be not empty
$filter['visible_images'] = -1;
}
pwg_set_session_var('filter_enabled', $filter['enabled']);
pwg_set_session_var('filter_check_key', $filter['check_key']);
pwg_set_session_var('filter_categories', serialize($filter['categories']));
pwg_set_session_var('filter_visible_categories', $filter['visible_categories']);
pwg_set_session_var('filter_visible_images', $filter['visible_images']);
}
else
{
// Read only data
$filter['check_key'] = pwg_get_session_var('filter_check_key', '');
$filter['categories'] = unserialize(pwg_get_session_var('filter_categories', serialize(array())));
$filter['visible_categories'] = pwg_get_session_var('filter_visible_categories', '');
$filter['visible_images'] = pwg_get_session_var('filter_visible_images', '');
}
$header_notes[] = l10n_dec('note_filter_day', 'note_filter_days', $user['recent_period']);
} // end if filter enabled
} // end if script_basename ...
?>
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