From 140b65d5b5035f7100424fb1800d08a696ecfa0c Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Thu, 12 Jan 2006 19:02:51 +0000
Subject: [PATCH] Adding pagination class... it kind of works

---
 pagination.php | 362 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 362 insertions(+)
 create mode 100644 pagination.php

diff --git a/pagination.php b/pagination.php
new file mode 100644
index 0000000..69f507c
--- /dev/null
+++ b/pagination.php
@@ -0,0 +1,362 @@
+<?php
+/*=====================================================================*\
+|| ###################################################################
+|| # Iris Studios Shared Object Framework [#]version[#]
+|| # Copyright ©2002-[#]year[#] Iris Studios, Inc.
+|| #
+|| # 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; version [#]gpl[#] of the License.
+|| #
+|| # 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.,
+|| # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+|| ###################################################################
+\*=====================================================================*/
+
+/**
+* Pagination System
+* pagination.php
+*
+* @package	ISSO
+*/
+
+/**
+* Pagination System
+*
+* On many pages, it is necessary to limit the amount of records to display.
+* Using this class, you can set the maximum and minimum values to display,
+* and then the input variables for page number and perpage. This will
+* then create a page navigator and manage the SQL LIMIT statements.
+*
+* @author		Iris Studios, Inc.
+* @copyright	Copyright ©2002 - [#]year[#], Iris Studios, Inc.
+* @version		$Revision$
+* @package		ISSO
+* 
+*/
+class Pagination
+{
+	/**
+	* Current page number
+	* @var	integer
+	* @access	private
+	*/
+	var $page;
+	
+	/**
+	* Per-page value
+	* @var	integer
+	* @access	private
+	*/
+	var $perpage;
+	
+	/**
+	* Number of page links
+	* @var	integer
+	* @access	private
+	*/
+	var $pagelinks;
+	
+	/**
+	* Total number of results
+	* @var	integer
+	* @access	private
+	*/
+	var $total;
+	
+	/**
+	* Total number of pages
+	* @var	integer
+	* @access	private
+	*/
+	var $pagecount;
+	
+	/**
+	* Name of page variable
+	* @var	array
+	* @access	private
+	*/
+	var $pagevar;
+	
+	/**
+	* Name of per-page variable
+	* @var	integer
+	* @access	private
+	*/
+	var $perpagevar;
+	
+	/**
+	* Maximum number of per-page results
+	* @var	integer
+	* @access	private
+	*/
+	var $maxperpage = 100;
+	
+	/**
+	* Default number of per-page results
+	* @var	integer
+	* @access	private
+	*/
+	var $defaultperpage = 20;
+	
+	/**
+	* ISSO fields
+	* @var	array
+	* @access	private
+	*/
+	var $fields = array(
+		'total'				=> array(REQ_YES,	null,	false),
+		'pagelinks'			=> array(REQ_YES,	null,	false),
+		'pagevar'			=> array(REQ_YES,	null,	false),
+		'perpagevar'		=> array(REQ_YES,	null,	false),
+		'maxperpage'		=> array(REQ_YES,	null,	true),
+		'defaultperpage'	=> array(REQ_YES,	null,	true)
+	);
+	
+	// ###################################################################
+	/**
+	* Constructor
+	*/
+	function __construct(&$registry)
+	{
+		$this->registry =& $registry;
+	}
+	
+	// ###################################################################
+	/**
+	* (PHP 4) Constructor
+	*/
+	function Pagination(&$registry)
+	{
+		$this->__construct($registry);
+	}
+	
+	/**
+	* Constructor: sanitize incoming variables
+	*
+	* @param	string	Name of page number variable
+	* @param	string	Name of per-page variable
+	*/
+	function Pagination($page, $perpage)
+	{
+		global $bugsys;
+		
+	}
+	
+	// ###################################################################
+	/**
+	* Sets an ISSO field
+	*
+	* @access	public
+	*
+	* @param	string	Field name
+	* @param	mixed	Value of the field
+	*/
+	function set($name, $value)
+	{
+		$this->registry->do_set($name, $value, 'pagination');
+	}
+	
+	// ###################################################################
+	/**
+	* Gets an ISSO field
+	*
+	* @access	public
+	*
+	* @param	string	Field name
+	*
+	* @return	mixed	Value of the field
+	*/
+	function get($fieldname)
+	{
+		return $this->registry->do_get($fieldname, 'pagination');
+	}
+	
+	/**
+	* Takes the variables and splits up the pages
+	*
+	* @access	public
+	*/
+	function split_pages()
+	{
+		$this->page = $this->registry->input_clean($this->pagevar, TYPE_INT);
+		$this->perpage = $this->registry->input_clean($this->perpagevar, TYPE_INT);
+		$this->pagelinks = $this->registry->input_clean($this->pagelinkx, TYPE_INT);
+		
+		if ($this->page <= 0)
+		{
+			$this->page = 1;
+		}
+		
+		if ($this->perpage <= 0)
+		{
+			$this->perpage = $this->defaultperpage;
+		}
+		if ($this->perpage > $this->maxperpage['maxpp'])
+		{
+			$this->perpage = $this->maxperpage['maxpp'];
+		}
+		
+		$this->perpage = $this->registry->clean($this->perpage, TYPE_INT);
+		
+		$this->pagecount = ceil($this->total / $this->perpage);
+	}
+	
+	/**
+	* Returns the lower limit of the pages
+	*
+	* @access	public
+	*
+	* @param	integer	Page number
+	*
+	* @return	integer	Lower result limit
+	*/
+	function fetch_limit($page = null)
+	{
+		if ($page === null)
+		{
+			$page = $this->page;
+		}
+		
+		$limit = $page * $this->perpage;
+		
+		if ($page < 1)
+		{
+			$page = 1;
+			$limit = 0;
+		}
+		else if ($page > $this->pagecount)
+		{
+			$page = $this->pagecount - 1;
+			$limit = $this->total;
+		}
+		
+		if ($limit < 0)
+		{
+			return 0;
+		}
+		else if ($limit > $this->total)
+		{
+			return $this->total;
+		}
+		else
+		{
+			return $limit;
+		}
+	}
+	
+	/**
+	* Constructs the page navigator
+	*
+	* @access	public
+	*
+	* @param	string	Base link path
+	*
+	* @return	string	Generated HTML page navigator
+	*/
+	function construct_page_nav($baselink)
+	{
+		global $bugsys;
+		
+		// handle base link
+		if (strpos($baselink, '?') === false)
+		{
+			$baselink .= '?';
+		}
+		else if (!preg_match('#\?$#', $baselink) AND !preg_match('#(&|&amp;)$#', $baselink))
+		{
+			$baselink .= '&amp;';
+		}
+		
+		// first page number in page nav
+		$startpage = $this->page - $this->pagelinks;
+		if ($startpage < 1)
+		{
+			$startpage = 1;
+		}
+		
+		// last page number in page nav
+		$endpage = $this->page + $this->pagelinks;
+		if ($endpage > $this->pagecount)
+		{
+			$endpage = $this->pagecount;
+		}
+		
+		// prev page in page nav
+		$prevpage = $this->page - 1;
+		if ($prevpage < 1)
+		{
+			$prevpage = 1;
+		}
+		
+		// next page in page nav
+		$nextpage = $this->page + 1;
+		if ($nextpage > $this->pagecount)
+		{
+			$nextpage = $this->pagecount;
+		}
+		
+		// show the prev page
+		$show['prev'] = true;
+		if ($this->page == $startpage)
+		{
+			$show['prev'] = false;
+		}
+		
+		// show the next page
+		$show['next'] = true;
+		if ($this->page == $endpage)
+		{
+			$show['next'] = false;
+		}
+		
+		// show the first page
+		$show['first'] = false;
+		if ($startpage > 1)
+		{
+			$show['first'] = true;
+		}
+		
+		// show the last page
+		$show['last'] = false;
+		if ($endpage < $this->pagecount)
+		{
+			$show['last'] = true;
+		}
+		
+		// construct the page bits
+		for ($i = $startpage; $i <= $endpage; $i++)
+		{
+			if ($i == $this->page)
+			{
+				$nolink = true;
+			}
+			else
+			{
+				$nolink = false;
+			}
+			
+			eval('$pagebits[] .= "' . $bugsys->template->fetch('pagenav_bit') . '";');
+		}
+		
+		$pagebits = implode(",\n", $pagebits);
+		
+		eval('$pagenav = "' . $bugsys->template->fetch('pagenav') . '";');
+		
+		return $pagenav;
+	}
+}
+
+/*=====================================================================*\
+|| ###################################################################
+|| # $HeadURL$
+|| # $Id$
+|| ###################################################################
+\*=====================================================================*/
+?>
\ No newline at end of file
-- 
2.43.5