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piwigo_ynh/sources/include/calendar_base.class.php
2014-07-06 13:21:10 +02:00

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PHP

<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based photo gallery |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2014 Piwigo Team http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | 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. |
// +-----------------------------------------------------------------------+
/**
* @package functions\calendar
*/
/**
* Base class for monthly and weekly calendar styles
*/
abstract class CalendarBase
{
/** db column on which this calendar works */
var $date_field;
/** used for queries (INNER JOIN or normal) */
var $inner_sql;
/** used to store db fields */
var $calendar_levels;
/**
* Generate navigation bars for category page.
*
* @return boolean false indicates that thumbnails where not included
*/
abstract function generate_category_content();
/**
* Returns a sql WHERE subquery for the date field.
*
* @param int $max_levels (e.g. 2=only year and month)
* @return string
*/
abstract function get_date_where($max_levels=3);
/**
* Initialize the calendar.
*
* @param string $inner_sql
*/
function initialize($inner_sql)
{
global $page;
if ($page['chronology_field']=='posted')
{
$this->date_field = 'date_available';
}
else
{
$this->date_field = 'date_creation';
}
$this->inner_sql = $inner_sql;
}
/**
* Returns the calendar title (with HTML).
*
* @return string
*/
function get_display_name()
{
global $conf, $page;
$res = '';
for ($i=0; $i<count($page['chronology_date']); $i++)
{
$res .= $conf['level_separator'];
if ( isset($page['chronology_date'][$i+1]) )
{
$chronology_date = array_slice($page['chronology_date'],0, $i+1);
$url = duplicate_index_url(
array( 'chronology_date'=>$chronology_date ),
array( 'start' )
);
$res .=
'<a href="'.$url.'">'
.$this->get_date_component_label($i, $page['chronology_date'][$i])
.'</a>';
}
else
{
$res .=
'<span class="calInHere">'
.$this->get_date_component_label($i, $page['chronology_date'][$i])
.'</span>';
}
}
return $res;
}
/**
* Returns a display name for a date component optionally using labels.
*
* @return string
*/
protected function get_date_component_label($level, $date_component)
{
$label = $date_component;
if (isset($this->calendar_levels[$level]['labels'][$date_component]))
{
$label = $this->calendar_levels[$level]['labels'][$date_component];
}
elseif ('any' === $date_component )
{
$label = l10n('All');
}
return $label;
}
/**
* Gets a nice display name for a date to be shown in previous/next links
*
* @param string $date
* @return string
*/
protected function get_date_nice_name($date)
{
$date_components = explode('-', $date);
$res = '';
for ($i=count($date_components)-1; $i>=0; $i--)
{
if ('any' !== $date_components[$i])
{
$label = $this->get_date_component_label($i, $date_components[$i] );
if ( $res!='' )
{
$res .= ' ';
}
$res .= $label;
}
}
return $res;
}
/**
* Creates a calendar navigation bar.
*
* @param array $date_components
* @param array $items - hash of items to put in the bar (e.g. 2005,2006)
* @param bool $show_any - adds any link to the end of the bar
* @param bool $show_empty - shows all labels even those without items
* @param array $labels - optional labels for items (e.g. Jan,Feb,...)
* @return string
*/
protected function get_nav_bar_from_items($date_components, $items,
$show_any,
$show_empty=false, $labels=null)
{
global $conf, $page, $template;
$nav_bar_datas=array();
if ($conf['calendar_show_empty'] and $show_empty and !empty($labels) )
{
foreach ($labels as $item => $label)
{
if ( ! isset($items[$item]) )
{
$items[$item] = -1;
}
}
ksort($items);
}
foreach ($items as $item => $nb_images)
{
$label = $item;
if (isset($labels[$item]))
{
$label = $labels[$item];
}
if ($nb_images==-1)
{
$tmp_datas=array(
'LABEL'=> $label
);
}
else
{
$url = duplicate_index_url(
array('chronology_date'=>array_merge($date_components,array($item))),
array( 'start' )
);
$tmp_datas=array(
'LABEL'=> $label,
'URL' => $url
);
}
if ($nb_images > 0)
{
$tmp_datas['NB_IMAGES']=$nb_images;
}
$nav_bar_datas[]=$tmp_datas;
}
if ($conf['calendar_show_any'] and $show_any and count($items)>1 and
count($date_components)<count($this->calendar_levels)-1 )
{
$url = duplicate_index_url(
array('chronology_date'=>array_merge($date_components,array('any'))),
array( 'start' )
);
$nav_bar_datas[]=array(
'LABEL' => l10n('All'),
'URL' => $url
);
}
return $nav_bar_datas;
}
/**
* Creates a calendar navigation bar for a given level.
*
* @param int $level - 0-year, 1-month/week, 2-day
*/
protected function build_nav_bar($level, $labels=null)
{
global $template, $conf, $page;
$query = '
SELECT DISTINCT('.$this->calendar_levels[$level]['sql'].') as period,
COUNT(DISTINCT id) as nb_images'.
$this->inner_sql.
$this->get_date_where($level).'
GROUP BY period;';
$level_items = simple_hash_from_query($query, 'period', 'nb_images');
if ( count($level_items)==1 and
count($page['chronology_date'])<count($this->calendar_levels)-1)
{
if ( ! isset($page['chronology_date'][$level]) )
{
list($key) = array_keys($level_items);
$page['chronology_date'][$level] = (int)$key;
if ( $level<count($page['chronology_date']) and
$level!=count($this->calendar_levels)-1 )
{
return;
}
}
}
$dates = $page['chronology_date'];
while ($level<count($dates))
{
array_pop($dates);
}
$nav_bar = $this->get_nav_bar_from_items(
$dates,
$level_items,
true,
true,
isset($labels) ? $labels : $this->calendar_levels[$level]['labels']
);
$template->append(
'chronology_navigation_bars',
array(
'items' => $nav_bar,
)
);
}
/**
* Assigns the next/previous link to the template with regards to
* the currently choosen date.
*/
protected function build_next_prev()
{
global $template, $page;
$prev = $next =null;
if ( empty($page['chronology_date']) )
return;
$sub_queries = array();
$nb_elements = count($page['chronology_date']);
for ($i=0; $i<$nb_elements; $i++)
{
if ( 'any' === $page['chronology_date'][$i] )
{
$sub_queries[] = '\'any\'';
}
else
{
$sub_queries[] = pwg_db_cast_to_text($this->calendar_levels[$i]['sql']);
}
}
$query = 'SELECT '.pwg_db_concat_ws($sub_queries, '-').' AS period';
$query .= $this->inner_sql .'
AND ' . $this->date_field . ' IS NOT NULL
GROUP BY period';
$current = implode('-', $page['chronology_date'] );
$upper_items = array_from_query( $query, 'period');
usort($upper_items, 'version_compare');
$upper_items_rank = array_flip($upper_items);
if ( !isset($upper_items_rank[$current]) )
{
$upper_items[] = $current;// just in case (external link)
usort($upper_items, 'version_compare');
$upper_items_rank = array_flip($upper_items);
}
$current_rank = $upper_items_rank[$current];
$tpl_var = array();
if ( $current_rank>0 )
{ // has previous
$prev = $upper_items[$current_rank-1];
$chronology_date = explode('-', $prev);
$tpl_var['previous'] =
array(
'LABEL' => $this->get_date_nice_name($prev),
'URL' => duplicate_index_url(
array('chronology_date'=>$chronology_date), array('start')
)
);
}
if ( $current_rank < count($upper_items)-1 )
{ // has next
$next = $upper_items[$current_rank+1];
$chronology_date = explode('-', $next);
$tpl_var['next'] =
array(
'LABEL' => $this->get_date_nice_name($next),
'URL' => duplicate_index_url(
array('chronology_date'=>$chronology_date), array('start')
)
);
}
if ( !empty($tpl_var) )
{
$existing = $template->smarty->getVariable('chronology_navigation_bars');
if (! ($existing instanceof Undefined_Smarty_Variable))
{
$existing->value[ sizeof($existing->value)-1 ] =
array_merge( $existing->value[ sizeof($existing->value)-1 ], $tpl_var);
}
else
{
$template->append( 'chronology_navigation_bars', $tpl_var );
}
}
}
}
?>