350 lines
9.8 KiB
PHP
350 lines
9.8 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based picture gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2010 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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// +-----------------------------------------------------------------------+
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// | This program is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU General Public License as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU General Public License |
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// | along with this program; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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/**
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* Base class for monthly and weekly calendar styles
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*/
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class CalendarBase
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{
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// db column on which this calendar works
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var $date_field;
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// used for queries (INNER JOIN or normal)
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var $inner_sql;
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//
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var $calendar_levels;
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/**
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* Initialize the calendar
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* @param string inner_sql used for queries (INNER JOIN or normal)
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*/
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function initialize($inner_sql)
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{
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global $page;
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if ($page['chronology_field']=='posted')
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{
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$this->date_field = 'date_available';
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}
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else
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{
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$this->date_field = 'date_creation';
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}
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$this->inner_sql = $inner_sql;
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}
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function get_display_name()
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{
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global $conf, $page;
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$res = '';
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for ($i=0; $i<count($page['chronology_date']); $i++)
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{
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$res .= $conf['level_separator'];
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if ( isset($page['chronology_date'][$i+1]) )
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{
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$chronology_date = array_slice($page['chronology_date'],0, $i+1);
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$url = duplicate_index_url(
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array( 'chronology_date'=>$chronology_date ),
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array( 'start' )
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);
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$res .=
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'<a href="'.$url.'">'
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.$this->get_date_component_label($i, $page['chronology_date'][$i])
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.'</a>';
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}
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else
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{
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$res .=
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'<span class="calInHere">'
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.$this->get_date_component_label($i, $page['chronology_date'][$i])
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.'</span>';
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}
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}
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return $res;
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}
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//--------------------------------------------------------- private members ---
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/**
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* Returns a display name for a date component optionally using labels
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*/
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function get_date_component_label($level, $date_component)
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{
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$label = $date_component;
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if (isset($this->calendar_levels[$level]['labels'][$date_component]))
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{
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$label = $this->calendar_levels[$level]['labels'][$date_component];
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}
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elseif ('any' === $date_component )
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{
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$label = l10n('All');
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}
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return $label;
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}
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/**
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* Gets a nice display name for a date to be shown in previos/next links.
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*/
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function get_date_nice_name($date)
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{
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$date_components = explode('-', $date);
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$res = '';
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for ($i=count($date_components)-1; $i>=0; $i--)
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{
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if ('any' !== $date_components[$i])
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{
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$label = $this->get_date_component_label($i, $date_components[$i] );
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if ( $res!='' )
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{
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$res .= ' ';
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}
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$res .= $label;
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}
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}
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return $res;
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}
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/**
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* Creates a calendar navigation bar.
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*
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* @param array date_components
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* @param array items - hash of items to put in the bar (e.g. 2005,2006)
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* @param bool show_any - adds any link to the end of the bar
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* @param bool show_empty - shows all labels even those without items
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* @param array labels - optional labels for items (e.g. Jan,Feb,...)
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* @return string the navigation bar
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*/
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function get_nav_bar_from_items($date_components, $items,
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$show_any,
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$show_empty=false, $labels=null)
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{
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global $conf, $page, $template;
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$nav_bar_datas=array();
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if ($conf['calendar_show_empty'] and $show_empty and !empty($labels) )
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{
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foreach ($labels as $item => $label)
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{
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if ( ! isset($items[$item]) )
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{
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$items[$item] = -1;
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}
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}
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ksort($items);
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}
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foreach ($items as $item => $nb_images)
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{
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$label = $item;
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if (isset($labels[$item]))
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{
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$label = $labels[$item];
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}
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if ($nb_images==-1)
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{
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$tmp_datas=array(
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'LABEL'=> $label
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);
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}
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else
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{
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$url = duplicate_index_url(
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array('chronology_date'=>array_merge($date_components,array($item))),
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array( 'start' )
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);
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$tmp_datas=array(
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'LABEL'=> $label,
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'URL' => $url
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);
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}
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if ($nb_images > 0)
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{
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$tmp_datas['NB_IMAGES']=$nb_images;
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}
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$nav_bar_datas[]=$tmp_datas;
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}
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if ($conf['calendar_show_any'] and $show_any and count($items)>1 and
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count($date_components)<count($this->calendar_levels)-1 )
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{
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$url = duplicate_index_url(
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array('chronology_date'=>array_merge($date_components,array('any'))),
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array( 'start' )
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);
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$nav_bar_datas[]=array(
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'LABEL' => l10n('All'),
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'URL' => $url
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);
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}
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return $nav_bar_datas;
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}
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/**
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* Creates a calendar navigation bar for a given level.
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*
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* @param int level - the level (0-year,1-month/week,2-day)
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* @return void
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*/
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function build_nav_bar($level, $labels=null)
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{
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global $template, $conf, $page;
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$query = '
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SELECT DISTINCT('.$this->calendar_levels[$level]['sql'].') as period,
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COUNT(DISTINCT id) as nb_images'.
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$this->inner_sql.
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$this->get_date_where($level).'
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GROUP BY period
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ORDER BY period ASC
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;';
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$level_items = simple_hash_from_query($query, 'period', 'nb_images');
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$level_items = array_to_int($level_items);
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if ( count($level_items)==1 and
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count($page['chronology_date'])<count($this->calendar_levels)-1)
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{
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if ( ! isset($page['chronology_date'][$level]) )
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{
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list($key) = array_keys($level_items);
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$page['chronology_date'][$level] = (int)$key;
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if ( $level<count($page['chronology_date']) and
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$level!=count($this->calendar_levels)-1 )
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{
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return;
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}
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}
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}
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$dates = $page['chronology_date'];
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while ($level<count($dates))
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{
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array_pop($dates);
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}
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$nav_bar = $this->get_nav_bar_from_items(
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$dates,
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$level_items,
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true,
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true,
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isset($labels) ? $labels : $this->calendar_levels[$level]['labels']
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);
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$template->append(
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'chronology_navigation_bars',
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array(
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'items' => $nav_bar,
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)
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);
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}
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/**
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* Assigns the next/previous link to the template with regards to
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* the currently choosen date.
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*/
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function build_next_prev()
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{
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global $template, $page;
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$prev = $next =null;
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if ( empty($page['chronology_date']) )
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return;
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$sub_queries = array();
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$nb_elements = count($page['chronology_date']);
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for ($i=0; $i<$nb_elements; $i++)
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{
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if ( 'any' === $page['chronology_date'][$i] )
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{
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$sub_queries[] = '\'any\'';
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}
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else
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{
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$sub_queries[] = pwg_db_cast_to_text($this->calendar_levels[$i]['sql']);
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}
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}
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$query = 'SELECT '.pwg_db_concat_ws($sub_queries, '-').' AS period';
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$query .= $this->inner_sql .'
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AND ' . $this->date_field . ' IS NOT NULL
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GROUP BY period';
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$current = implode('-', $page['chronology_date'] );
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$upper_items = array_from_query( $query, 'period');
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$upper_items = array_to_int($upper_items);
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usort($upper_items, 'version_compare');
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$upper_items_rank = array_flip($upper_items);
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if ( !isset($upper_items_rank[$current]) )
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{
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array_push($upper_items, $current);// just in case (external link)
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usort($upper_items, 'version_compare');
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$upper_items_rank = array_flip($upper_items);
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}
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$current_rank = $upper_items_rank[$current];
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$tpl_var = array();
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if ( $current_rank>0 )
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{ // has previous
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$prev = $upper_items[$current_rank-1];
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$chronology_date = explode('-', $prev);
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$tpl_var['previous'] =
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array(
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'LABEL' => $this->get_date_nice_name($prev),
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'URL' => duplicate_index_url(
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array('chronology_date'=>$chronology_date), array('start')
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)
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);
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}
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if ( $current_rank < count($upper_items)-1 )
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{ // has next
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$next = $upper_items[$current_rank+1];
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$chronology_date = explode('-', $next);
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$tpl_var['next'] =
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array(
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'LABEL' => $this->get_date_nice_name($next),
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'URL' => duplicate_index_url(
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array('chronology_date'=>$chronology_date), array('start')
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)
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);
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}
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if ( !empty($tpl_var) )
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{
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$existing = & $template->get_template_vars('chronology_navigation_bars');
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if ( !empty($existing) )
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{
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$existing[ sizeof($existing)-1 ] =
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array_merge( $existing[ sizeof($existing)-1 ], $tpl_var);
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}
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else
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{
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$template->append( 'chronology_navigation_bars', $tpl_var );
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}
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}
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}
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}
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?>
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