feature 2614: pagination on albums

git-svn-id: http://piwigo.org/svn/trunk@18165 68402e56-0260-453c-a942-63ccdbb3a9ee

12 files changed, 147 insertions, 42 deletions

diff --git a/admin/configuration.php b/admin/configuration.php
index c615d64f1..8a7094864 100644
--- a/admin/configuration.php
+++ b/admin/configuration.php
@@ -222,6 +222,11 @@ if (isset($_POST['submit']))
     }
     case 'display' :
     {
+      if (!preg_match($int_pattern, $_POST['nb_categories_page'])
+            or $_POST['nb_categories_page'] < 4)
+      {
+        array_push($page['errors'], l10n('The number of albums a page must be above 4.'));
+      }
       foreach( $display_checkboxes as $checkbox)
       {
         $_POST[$checkbox] = empty($_POST[$checkbox])?'false':'true';
@@ -422,7 +427,8 @@ switch ($page['section'])
     $template->append(
         'display',
         array(
-          'picture_informations' => unserialize($conf['picture_informations'])
+          'picture_informations' => unserialize($conf['picture_informations']),
+          'NB_CATEGORIES_PAGE' => $conf['nb_categories_page'],
           ),
         true
       );
diff --git a/admin/themes/default/template/configuration.tpl b/admin/themes/default/template/configuration.tpl
index 388e26d0d..a2520b0c3 100644
--- a/admin/themes/default/template/configuration.tpl
+++ b/admin/themes/default/template/configuration.tpl
@@ -645,6 +645,13 @@ jQuery(document).ready(function() {
         {'slideshow'|@translate|@ucfirst|@string_format:$pwg->l10n('Activate icon "%s"')}
       </label>
     </li>
+    
+    <li>
+      <label>
+        {'Number of albums per page'|@translate}
+        <input type="text" size="3" maxlength="4" name="nb_categories_page" id="nb_categories_page" value="{$display.NB_CATEGORIES_PAGE}">
+      </label>
+    </li>
   </ul>
 </fieldset>
 
diff --git a/include/category_cats.inc.php b/include/category_cats.inc.php
index c8b728e5a..b09f4eaec 100644
--- a/include/category_cats.inc.php
+++ b/include/category_cats.inc.php
@@ -22,11 +22,19 @@
 // +-----------------------------------------------------------------------+
 
 /**
- * This file is included by the main page to show thumbnails for a category
- * that have only subcategories or to show recent categories
+ * This file is included by the main page to show subcategories of a category
+ * or to show recent categories or main page categories list
  *
  */
 
+$selection = array_slice(
+  $page['categories'],
+  $page['starta'],
+  $conf['nb_categories_page']
+  );
+
+$selection = trigger_event('loc_index_categories_selection', $selection);
+
 // $user['forbidden_categories'] including with USER_CACHE_CATEGORIES_TABLE
 $query = '
 SELECT
@@ -38,27 +46,11 @@ SELECT
     count_images,
     count_categories
   FROM '.CATEGORIES_TABLE.' c
-    INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.' ucc ON id = cat_id AND user_id = '.$user['id'];
-
-if ('recent_cats' == $page['section'])
-{
-  $query.= '
-  WHERE date_last >= '.pwg_db_get_recent_period_expression($user['recent_period']);
-}
-else
-{
-  $query.= '
-  WHERE id_uppercat '.(!isset($page['category']) ? 'is NULL' : '= '.$page['category']['id']);
-}
-
-$query.= '
-    '.get_sql_condition_FandF(
-  array(
-    'visible_categories' => 'id',
-    ),
-  'AND'
-  );
-
+    INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.' ucc 
+    ON id = cat_id 
+    AND user_id = '.$user['id'].'
+  WHERE c.id IN('.implode(',', $selection).')';
+  
 if ('recent_cats' != $page['section'])
 {
   $query.= '
diff --git a/include/functions.inc.php b/include/functions.inc.php
index 0be5ec9ef..031ee652a 100644
--- a/include/functions.inc.php
+++ b/include/functions.inc.php
@@ -1429,13 +1429,13 @@ function verify_ephemeral_key($key, $aditionnal_data_to_hash = '')
 /**
  * return an array which will be sent to template to display navigation bar
  */
-function create_navigation_bar($url, $nb_element, $start, $nb_element_page, $clean_url = false)
+function create_navigation_bar($url, $nb_element, $start, $nb_element_page, $clean_url = false, $param_name='start')
 {
   global $conf;
 
   $navbar = array();
   $pages_around = $conf['paginate_pages_around'];
-  $start_str = $clean_url ? '/start-' : (strpos($url, '?')===false ? '?':'&amp;').'start=';
+  $start_str = $clean_url ? '/'.$param_name.'-' : (strpos($url, '?')===false ? '?':'&amp;').$param_name.'=';
 
   if (!isset($start) or !is_numeric($start) or (is_numeric($start) and $start < 0))
   {
diff --git a/include/functions_url.inc.php b/include/functions_url.inc.php
index 8d9dba93e..7a3853e25 100644
--- a/include/functions_url.inc.php
+++ b/include/functions_url.inc.php
@@ -458,6 +458,7 @@ function parse_section_url( $tokens, &$next_token)
             and strpos($tokens[$current_token], 'created-')!==0
             and strpos($tokens[$current_token], 'posted-')!==0
             and strpos($tokens[$next_token], 'start-')!==0
+            and strpos($tokens[$next_token], 'starta-')!==0
             and $tokens[$current_token] != 'flat')
         {
           if (empty($maybe_permalinks))
@@ -651,6 +652,10 @@ function parse_well_known_params_url($tokens, &$i)
     {
       $page['start'] = $matches[1];
     }
+    elseif (preg_match('/^starta-(\d+)/', $tokens[$i], $matches))
+    {
+      $page['starta'] = $matches[1];
+    }
     $i++;
   }
   return $page;
diff --git a/include/section_init.inc.php b/include/section_init.inc.php
index 2bfb1e9b5..25712a0bb 100644
--- a/include/section_init.inc.php
+++ b/include/section_init.inc.php
@@ -41,7 +41,11 @@
 //   'start'    => 24
 //   );
 
-$page['items'] = array();
+// exemple of dynamic nb_categories_page (%2 for nice display)
+// $conf['nb_categories_page'] = 2*round($user['nb_image_page']/4);
+
+$page['items'] = $page['categories'] = array();
+$page['start'] = $page['starta'] = 0;
 
 // some ISPs set PATH_INFO to empty string or to SCRIPT_FILENAME while in the
 // default apache implementation it is not set
@@ -246,8 +250,11 @@ if ('categories' == $page['section'])
   else
     $page['title'] = ''; // will be set later
 
+    
+  // GET IMAGES LIST
   if
     (
+      $page['starta'] == 0 and
       (!isset($page['chronology_field'])) and
       (
         (isset($page['category'])) or
@@ -310,6 +317,44 @@ SELECT DISTINCT(image_id)
 
     $page['items'] = array_from_query($query, 'image_id');
   } //otherwise the calendar will requery all subitems
+  
+  // GET CATEGORIES LIST
+  if ( 0==$page['start']
+    and !isset($page['flat'])
+    and !isset($page['chronology_field'])
+    and ('recent_cats'==$page['section'] or 'categories'==$page['section'])
+    and (!isset($page['category']['count_categories']) or $page['category']['count_categories']>0 )
+  )
+  {
+    $query = '
+SELECT c.id
+  FROM '.CATEGORIES_TABLE.' c
+    INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.' ucc 
+    ON id = cat_id 
+    AND user_id = '.$user['id'];
+
+    if ('recent_cats' == $page['section'])
+    {
+      $query.= '
+      WHERE date_last >= '.pwg_db_get_recent_period_expression($user['recent_period']);
+    }
+    else
+    {
+      $query.= '
+      WHERE id_uppercat '.(!isset($page['category']) ? 'is NULL' : '= '.$page['category']['id']);
+    }
+
+    $query.= '
+        '.get_sql_condition_FandF(
+          array('visible_categories' => 'id'),
+          'AND'
+          );
+
+    $query.= '
+    ;';
+
+    $page['categories'] = array_from_query($query, 'id');
+  }
 }
 // special sections
 else
diff --git a/index.php b/index.php
index 02cd6369f..12797cc0b 100644
--- a/index.php
+++ b/index.php
@@ -29,10 +29,6 @@ include(PHPWG_ROOT_PATH.'include/section_init.inc.php');
 // Check Access and exit when user status is not ok
 check_status(ACCESS_GUEST);
 
-if (!isset($page['start']))
-{
-  $page['start'] = 0;
-}
 
 // access authorization check
 if (isset($page['category']))
@@ -74,6 +70,7 @@ if (isset($_GET['display']))
 }
 //-------------------------------------------------------------- initialization
 
+// navigation bar
 $page['navigation_bar'] = array();
 if (count($page['items']) > $page['nb_image_page'])
 {
@@ -82,10 +79,25 @@ if (count($page['items']) > $page['nb_image_page'])
     count($page['items']),
     $page['start'],
     $page['nb_image_page'],
-    true
+    true, 'start'
     );
 }
 
+$page['cats_navigation_bar'] = array();
+if (count($page['categories']) > $conf['nb_categories_page'])
+{
+  $page['cats_navigation_bar'] = create_navigation_bar(
+    duplicate_index_url(array(), array('starta')),
+    count($page['categories']),
+    $page['starta'],
+    $conf['nb_categories_page'],
+    true, 'starta'
+    );
+}
+
+$template->assign( 'thumb_navbar', $page['navigation_bar'] );
+$template->assign( 'cats_navbar', $page['cats_navigation_bar'] );
+
 // caddie filling :-)
 if (isset($_GET['caddie']))
 {
@@ -242,8 +254,6 @@ if ( $page['section']=='search' and $page['start']==0 and
   }
 }
 
-// navigation bar
-$template->assign( 'navbar', $page['navigation_bar'] );
 
 if ( $conf['index_sort_order_input']
     and count($page['items']) > 0
@@ -288,12 +298,7 @@ if ( isset($page['category']['count_categories']) and $page['category']['count_c
 }
 
 //------------------------------------------------------ main part : thumbnails
-if ( 0==$page['start']
-    and !isset($page['flat'])
-    and !isset($page['chronology_field'])
-    and ('recent_cats'==$page['section'] or 'categories'==$page['section'])
-    and (!isset($page['category']['count_categories']) or $page['category']['count_categories']>0 )
-  )
+if ( !empty($page['categories']) )
 {
   include(PHPWG_ROOT_PATH.'include/category_cats.inc.php');
 }
diff --git a/install/config.sql b/install/config.sql
index b68af137a..e1c1128eb 100644
--- a/install/config.sql
+++ b/install/config.sql
@@ -21,6 +21,7 @@ INSERT INTO piwigo_config (param,value,comment) VALUES ('history_admin','false',
 INSERT INTO piwigo_config (param,value,comment) VALUES ('history_guest','true','keep a history of guest visits on your website');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('allow_user_registration','true','allow visitors to register?');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('allow_user_customization','true','allow users to customize their gallery?');
+INSERT INTO piwigo_config (param,value,comment) VALUES ('nb_categories_page','12');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('nbm_send_html_mail','true','Send mail on HTML format for notification by mail');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('nbm_send_mail_as','','Send mail as param value for notification by mail');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('nbm_send_detailed_content','true','Send detailed content for notification by mail');
diff --git a/install/db/131-database.php b/install/db/131-database.php
new file mode 100644
index 000000000..0af7771e9
--- /dev/null
+++ b/install/db/131-database.php
@@ -0,0 +1,35 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based photo gallery                                    |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2012 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.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+$upgrade_description = 'add "nb_categories_page" parameter';
+
+conf_update_param('nb_categories_page', '12');
+
+echo "\n".$upgrade_description."\n";
+
+?>
\ No newline at end of file
diff --git a/language/en_UK/admin.lang.php b/language/en_UK/admin.lang.php
index 15ce554a1..7055d3e01 100644
--- a/language/en_UK/admin.lang.php
+++ b/language/en_UK/admin.lang.php
@@ -538,6 +538,7 @@ $lang['nothing'] = "nothing";
 $lang['Notification'] = "Notification";
 $lang['Notify administrators when a comment is'] = 'Notify administrators when a comment is';
 $lang['Number of comments per page'] = "Number of comments per page";
+$lang['Number of albums per page'] = 'Number of albums per page';
 $lang['Number of downloads'] = "Number of downloads";
 $lang['number of miniaturized photos'] = "number of thumbnails created";
 $lang['Number of rates'] = "Number of rates";
diff --git a/language/fr_FR/admin.lang.php b/language/fr_FR/admin.lang.php
index ca2f7c21b..ff50d076f 100644
--- a/language/fr_FR/admin.lang.php
+++ b/language/fr_FR/admin.lang.php
@@ -936,4 +936,5 @@ $lang['Landscape'] = 'Paysage';
 $lang['Panorama'] = 'Panorama';
 $lang['Manage photos'] = 'Gérer les photos';
 $lang['View in gallery'] = 'Voir dans la galerie';
+$lang['Number of albums per page'] = 'Nombre d\'albums par page';
 ?>
\ No newline at end of file
diff --git a/themes/default/template/index.tpl b/themes/default/template/index.tpl
index 14045342a..410d08481 100644
--- a/themes/default/template/index.tpl
+++ b/themes/default/template/index.tpl
@@ -163,13 +163,20 @@ jQuery("#derivativeSwitchBox").on("mouseleave", function() {
 {/if}
 
 {if !empty($CATEGORIES)}{$CATEGORIES}{/if}
+{if !empty($cats_navbar)}
+  {assign var=navbar value=$cats_navbar}
+  {include file='navigation_bar.tpl'|@get_extent:'navbar'}
+{/if}
+
 {if !empty($THUMBNAILS)}
 <ul class="thumbnails" id="thumbnails">
 {$THUMBNAILS}
 </ul>
 {/if}
-
-{if !empty($navbar)}{include file='navigation_bar.tpl'|@get_extent:'navbar'}{/if}
+{if !empty($thumb_navbar)}
+  {assign var=navbar value=$thumb_navbar}
+  {include file='navigation_bar.tpl'|@get_extent:'navbar'}
+{/if}
 
 {if !empty($PLUGIN_INDEX_CONTENT_END)}{$PLUGIN_INDEX_CONTENT_END}{/if}
 </div>{* <!-- content --> *}