add pager class

git-svn-id: svn+ssh://code.netmonsters.ru/svn/majestic/trunk@59 4cb57b5f-5bbd-dd11-951b-001d605cbbc5

classes/Pager.class.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * PagerAction
+ *
+ * @copyright
+ * @link
+ * @package Nakon
+ * @subpackage face
+ * @since 04.02.2008
+ * @version SVN$
+ * @filesource $URL$
+ */
+
+
+class Pager extends Action
+{                         
+    public $template_dir = '.';
+    
+    protected $current_page = 1;
+    protected $max_page_num;
+    protected $num_rows;
+    protected $limit;
+    protected $start_offset = 0;
+    protected $count = 0;
+    
+    public function __construct($count, $current_page = 1, $records_limit = 20)
+    {
+        parent::__construct();
+        
+        $this->count = $count;
+        $this->limit = $records_limit;
+        
+        $this->max_page_num = ceil($this->count/$this->limit);
+        $this->current_page = ((int)$current_page <= $this->max_page_num && (int)$current_page > 0) ? (int)$current_page : 1;
+        
+        $this->start_offset = $this->limit * ($this->current_page - 1);
+        $this->num_rows = ($this->limit + $this->start_offset) <= $this->count ? ($this->limit + $this->start_offset) : $this->count;
+    }
+    
+    public function startOffset()
+    {
+        return $this->start_offset;
+    }
+    
+    public function limit()
+    {
+        return $this->limit;
+    }
+    
+    public function setNumRows($num_rows)
+    {
+        $this->num_rows = $num_rows;
+    }
+    
+    function init()
+    {
+        $this->template = "Pager";
+    }
+
+    function prepare()
+    {
+        $this->templater->assign('page', $this->current_page);
+        $this->templater->assign('page_max', $this->max_page_num);
+        $this->templater->assign('limit', $this->limit);
+        $this->templater->assign('count', $this->count);
+    }
+}
+?>