<?php // +-----------------------------------------------------------------------+ // | Piwigo - a PHP based picture gallery | // +-----------------------------------------------------------------------+ // | Copyright(C) 2008-2009 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. | // +-----------------------------------------------------------------------+ /** * Base class for monthly and weekly calendar styles */ class CalendarBase { // db column on which this calendar works var $date_field; // used for queries (INNER JOIN or normal) var $inner_sql; // var $calendar_levels; /** * Initialize the calendar * @param string inner_sql used for queries (INNER JOIN or normal) */ function initialize($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; } 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 $res; } //--------------------------------------------------------- private members --- /** * Returns a display name for a date component optionally using labels */ function get_date_component_label($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('calendar_any'); } return $label; } /** * Gets a nice display name for a date to be shown in previos/next links. */ function get_date_nice_name($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 $res; } /** * Creates a calendar navigation bar. * * @param array date_components * @param array items - hash of items to put in the bar (e.g. 2005,2006) * @param bool show_any - adds any link to the end of the bar * @param bool show_empty - shows all labels even those without items * @param array labels - optional labels for items (e.g. Jan,Feb,...) * @return string the navigation bar */ function get_nav_bar_from_items($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('calendar_any'), 'URL' => $url ); } return $nav_bar_datas; } /** * Creates a calendar navigation bar for a given level. * * @param int level - the level (0-year,1-month/week,2-day) * @return void */ function build_nav_bar($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 ORDER BY period ASC ;'; $level_items = simple_hash_from_query($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. */ 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, 'date_compare'); $upper_items_rank = array_flip($upper_items); if ( !isset($upper_items_rank[$current]) ) { array_push($upper_items, $current);// just in case (external link) usort($upper_items, 'date_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 = & $template->get_template_vars('chronology_navigation_bars'); if ( !empty($existing) ) { $existing[ sizeof($existing)-1 ] = array_merge( $existing[ sizeof($existing)-1 ], $tpl_var); } else { $template->append( 'chronology_navigation_bars', $tpl_var ); } } } } ?>