git-svn-id: http://piwigo.org/svn/trunk@2357 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 351 insertions, 0 deletions

diff --git a/BSF/include/calendar_base.class.php b/BSF/include/calendar_base.class.php
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+++ b/BSF/include/calendar_base.class.php
@@ -0,0 +1,351 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based picture gallery                                  |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008      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 $res;
+  }
+
+  /**
+   * Creates a calendar navigation bar.
+   *
+   * @param array date_components
+   * @param array items - hash of items to put in the bar (e.g. 2005,2006)
+   * @param string class_prefix - html class attribute prefix for span elements
+   * @param bool show_any - adds any link to the end of the bar
+   * @param bool show_empty - shows all labels even those without items
+   * @param array labels - optional labels for items (e.g. Jan,Feb,...)
+   * @return string the navigation bar
+   */
+  function get_nav_bar_from_items($date_components, $items,
+                                  $class_prefix, $show_any,
+                                  $show_empty=false, $labels=null)
+  {
+    global $conf, $page;
+
+    $nav_bar = '';
+
+    if ($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)
+      {
+        $nav_bar .= '<span class="'.$class_prefix.'Empty">';
+        $nav_bar .= $label;
+      }
+      else
+      {
+        $nav_bar .= '<span class="'.$class_prefix.'">';
+        $url = duplicate_index_url(
+          array('chronology_date'=>array_merge($date_components,array($item))),
+          array( 'start' )
+            );
+        $nav_bar .= '<a href="'.$url.'">';
+        $nav_bar .= $label;
+        $nav_bar .= '</a>';
+      }
+      if ($nb_images > 0)
+      {
+        $nav_bar .= '('.$nb_images.')';
+      }
+      $nav_bar.= '</span>';
+    }
+
+    if ($conf['calendar_show_any'] and $show_any and count($items)>1 and
+          count($date_components)<count($this->calendar_levels)-1 )
+    {
+      $label = l10n('calendar_any');
+      $nav_bar .= '<span class="'.$class_prefix.'">';
+      $url = duplicate_index_url(
+        array('chronology_date'=>array_merge($date_components,array('any'))),
+        array( 'start' )
+          );
+      $nav_bar .= '<a href="'.$url.'">';
+      $nav_bar .= $label;
+      $nav_bar .= '</a>';
+      $nav_bar.= '</span>';
+    }
+    return $nav_bar;
+  }
+
+  /**
+   * Creates a calendar navigation bar for a given level.
+   *
+   * @param int level - the level (0-year,1-month/week,2-day)
+   * @return void
+   */
+  function build_nav_bar($level, $labels=null)
+  {
+    global $template, $conf, $page;
+
+    $query = '
+SELECT DISTINCT('.$this->calendar_levels[$level]['sql']
+      .') as period';
+    $query.= $this->inner_sql;
+    $query.= $this->get_date_where($level);
+    $query.= '
+  GROUP BY period
+;';
+
+    $level_items = array();
+    $result = pwg_query($query);
+    while ($row = mysql_fetch_array($result))
+    {
+      $level_items[$row['period']] = 0;
+    }
+
+    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,
+      $level_items,
+      'calItem',
+      true,
+      true,
+      isset($labels) ? $labels : $this->calendar_levels[$level]['labels']
+      );
+
+    $template->append(
+      'chronology_navigation_bars',
+      array(
+        'CONTENT' => $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;
+    $query = 'SELECT CONCAT_WS("-"';
+    for ($i=0; $i<count($page['chronology_date']); $i++)
+    {
+      if ( 'any' === $page['chronology_date'][$i] )
+      {
+        $query .= ','.'"any"';
+      }
+      else
+      {
+        $query .= ','.$this->calendar_levels[$i]['sql'];
+      }
+    }
+    $current = implode('-', $page['chronology_date'] );
+
+    $query.=') as period' . $this->inner_sql .'
+AND ' . $this->date_field . ' IS NOT NULL
+GROUP BY period';
+
+    $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]) )
+    {
+      array_push($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 = & $template->get_template_vars('chronology_navigation_bars');
+      if ( !empty($existing) )
+      {
+        $existing[ sizeof($existing)-1 ] =
+          array_merge( $existing[ sizeof($existing)-1 ], $tpl_var);
+      }
+      else
+      {
+        $template->append( 'chronology_navigation_bars', $tpl_var );
+      }
+    }
+  }
+}
+?>