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<?php
/**
* @version $Id: pagination.php 14401 2010-01-26 14:10:00Z louis $
* @package Joomla.Framework
* @subpackage HTML
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* Pagination Class. Provides a common interface for content pagination for the
* Joomla! Framework
*
* @package Joomla.Framework
* @subpackage HTML
* @since 1.5
*/
class JPagination extends JObject
{
/**
* The record number to start dislpaying from
*
* @access public
* @var int
*/
var $limitstart = null;
/**
* Number of rows to display per page
*
* @access public
* @var int
*/
var $limit = null;
/**
* Total number of rows
*
* @access public
* @var int
*/
var $total = null;
/**
* View all flag
*
* @access protected
* @var boolean
*/
var $_viewall = false;
/**
* Constructor
*
* @param int The total number of items
* @param int The offset of the item to start at
* @param int The number of items to display per page
*/
function __construct($total, $limitstart, $limit)
{
// Value/Type checking
$this->total = (int) $total;
$this->limitstart = (int) max($limitstart, 0);
$this->limit = (int) max($limit, 0);
if ($this->limit > $this->total) {
$this->limitstart = 0;
}
if (!$this->limit)
{
$this->limit = $total;
$this->limitstart = 0;
}
if ($this->limitstart > $this->total) {
$this->limitstart -= $this->limitstart % $this->limit;
}
// Set the total pages and current page values
if($this->limit > 0)
{
$this->set( 'pages.total', ceil($this->total / $this->limit));
$this->set( 'pages.current', ceil(($this->limitstart + 1) / $this->limit));
}
// Set the pagination iteration loop values
$displayedPages = 10;
$this->set( 'pages.start', (floor(($this->get('pages.current') -1) / $displayedPages)) * $displayedPages +1);
if ($this->get('pages.start') + $displayedPages -1 < $this->get('pages.total')) {
$this->set( 'pages.stop', $this->get('pages.start') + $displayedPages -1);
} else {
$this->set( 'pages.stop', $this->get('pages.total'));
}
// If we are viewing all records set the view all flag to true
if ($this->limit == $total) {
$this->_viewall = true;
}
}
/**
* Return the rationalised offset for a row with a given index.
*
* @access public
* @param int $index The row index
* @return int Rationalised offset for a row with a given index
* @since 1.5
*/
function getRowOffset($index)
{
return $index +1 + $this->limitstart;
}
/**
* Return the pagination data object, only creating it if it doesn't already exist
*
* @access public
* @return object Pagination data object
* @since 1.5
*/
function getData()
{
static $data;
if (!is_object($data)) {
$data = $this->_buildDataObject();
}
return $data;
}
/**
* Create and return the pagination pages counter string, ie. Page 2 of 4
*
* @access public
* @return string Pagination pages counter string
* @since 1.5
*/
function getPagesCounter()
{
// Initialize variables
$html = null;
if ($this->get('pages.total') > 1) {
$html .= JText::sprintf('JPAGE_CURRENT_OF_TOTAL', $this->get('pages.current'), $this->get('pages.total'));
}
return $html;
}
/**
* Create and return the pagination result set counter string, ie. Results 1-10 of 42
*
* @access public
* @return string Pagination result set counter string
* @since 1.5
*/
function getResultsCounter()
{
// Initialize variables
$html = null;
$fromResult = $this->limitstart + 1;
// If the limit is reached before the end of the list
if ($this->limitstart + $this->limit < $this->total) {
$toResult = $this->limitstart + $this->limit;
} else {
$toResult = $this->total;
}
// If there are results found
if ($this->total > 0) {
$msg = JText::sprintf('Results of', $fromResult, $toResult, $this->total);
$html .= "\n".$msg;
} else {
$html .= "\n".JText::_('No records found');
}
return $html;
}
/**
* Create and return the pagination page list string, ie. Previous, Next, 1 2 3 ... x
*
* @access public
* @return string Pagination page list string
* @since 1.0
*/
function getPagesLinks()
{
global $mainframe;
$lang =& JFactory::getLanguage();
// Build the page navigation list
$data = $this->_buildDataObject();
$list = array();
$itemOverride = false;
$listOverride = false;
$chromePath = JPATH_THEMES.DS.$mainframe->getTemplate().DS.'html'.DS.'pagination.php';
if (file_exists($chromePath))
{
require_once ($chromePath);
if (function_exists('pagination_item_active') && function_exists('pagination_item_inactive')) {
$itemOverride = true;
}
if (function_exists('pagination_list_render')) {
$listOverride = true;
}
}
// Build the select list
if ($data->all->base !== null) {
$list['all']['active'] = true;
$list['all']['data'] = ($itemOverride) ? pagination_item_active($data->all) : $this->_item_active($data->all);
} else {
$list['all']['active'] = false;
$list['all']['data'] = ($itemOverride) ? pagination_item_inactive($data->all) : $this->_item_inactive($data->all);
}
if ($data->start->base !== null) {
$list['start']['active'] = true;
$list['start']['data'] = ($itemOverride) ? pagination_item_active($data->start) : $this->_item_active($data->start);
} else {
$list['start']['active'] = false;
$list['start']['data'] = ($itemOverride) ? pagination_item_inactive($data->start) : $this->_item_inactive($data->start);
}
if ($data->previous->base !== null) {
$list['previous']['active'] = true;
$list['previous']['data'] = ($itemOverride) ? pagination_item_active($data->previous) : $this->_item_active($data->previous);
} else {
$list['previous']['active'] = false;
$list['previous']['data'] = ($itemOverride) ? pagination_item_inactive($data->previous) : $this->_item_inactive($data->previous);
}
$list['pages'] = array(); //make sure it exists
foreach ($data->pages as $i => $page)
{
if ($page->base !== null) {
$list['pages'][$i]['active'] = true;
$list['pages'][$i]['data'] = ($itemOverride) ? pagination_item_active($page) : $this->_item_active($page);
} else {
$list['pages'][$i]['active'] = false;
$list['pages'][$i]['data'] = ($itemOverride) ? pagination_item_inactive($page) : $this->_item_inactive($page);
}
}
if ($data->next->base !== null) {
$list['next']['active'] = true;
$list['next']['data'] = ($itemOverride) ? pagination_item_active($data->next) : $this->_item_active($data->next);
} else {
$list['next']['active'] = false;
$list['next']['data'] = ($itemOverride) ? pagination_item_inactive($data->next) : $this->_item_inactive($data->next);
}
if ($data->end->base !== null) {
$list['end']['active'] = true;
$list['end']['data'] = ($itemOverride) ? pagination_item_active($data->end) : $this->_item_active($data->end);
} else {
$list['end']['active'] = false;
$list['end']['data'] = ($itemOverride) ? pagination_item_inactive($data->end) : $this->_item_inactive($data->end);
}
if($this->total > $this->limit){
return ($listOverride) ? pagination_list_render($list) : $this->_list_render($list);
}
else{
return '';
}
}
/**
* Return the pagination footer
*
* @access public
* @return string Pagination footer
* @since 1.0
*/
function getListFooter()
{
global $mainframe;
$list = array();
$list['limit'] = $this->limit;
$list['limitstart'] = $this->limitstart;
$list['total'] = $this->total;
$list['limitfield'] = $this->getLimitBox();
$list['pagescounter'] = $this->getPagesCounter();
$list['pageslinks'] = $this->getPagesLinks();
$chromePath = JPATH_THEMES.DS.$mainframe->getTemplate().DS.'html'.DS.'pagination.php';
if (file_exists( $chromePath ))
{
require_once( $chromePath );
if (function_exists( 'pagination_list_footer' )) {
return pagination_list_footer( $list );
}
}
return $this->_list_footer($list);
}
/**
* Creates a dropdown box for selecting how many records to show per page
*
* @access public
* @return string The html for the limit # input box
* @since 1.0
*/
function getLimitBox()
{
global $mainframe;
// Initialize variables
$limits = array ();
// Make the option list
for ($i = 5; $i <= 30; $i += 5) {
$limits[] = JHTML::_('select.option', "$i");
}
$limits[] = JHTML::_('select.option', '50');
$limits[] = JHTML::_('select.option', '100');
$limits[] = JHTML::_('select.option', '0', JText::_('all'));
$selected = $this->_viewall ? 0 : $this->limit;
// Build the select list
if ($mainframe->isAdmin()) {
$html = JHTML::_('select.genericlist', $limits, 'limit', 'class="inputbox" size="1" onchange="submitform();"', 'value', 'text', $selected);
} else {
$html = JHTML::_('select.genericlist', $limits, 'limit', 'class="inputbox" size="1" onchange="this.form.submit()"', 'value', 'text', $selected);
}
return $html;
}
/**
* Return the icon to move an item UP
*
* @access public
* @param int $i The row index
* @param boolean $condition True to show the icon
* @param string $task The task to fire
* @param string $alt The image alternate text string
* @return string Either the icon to move an item up or a space
* @since 1.0
*/
function orderUpIcon($i, $condition = true, $task = 'orderup', $alt = 'Move Up', $enabled = true)
{
$alt = JText::_($alt);
$html = ' ';
if (($i > 0 || ($i + $this->limitstart > 0)) && $condition)
{
if($enabled) {
$html = '<a href="#reorder" onclick="return listItemTask(\'cb'.$i.'\',\''.$task.'\')" title="'.$alt.'">';
$html .= ' <img src="images/uparrow.png" width="16" height="16" border="0" alt="'.$alt.'" />';
$html .= '</a>';
} else {
$html = '<img src="images/uparrow0.png" width="16" height="16" border="0" alt="'.$alt.'" />';
}
}
return $html;
}
/**
* Return the icon to move an item DOWN
*
* @access public
* @param int $i The row index
* @param int $n The number of items in the list
* @param boolean $condition True to show the icon
* @param string $task The task to fire
* @param string $alt The image alternate text string
* @return string Either the icon to move an item down or a space
* @since 1.0
*/
function orderDownIcon($i, $n, $condition = true, $task = 'orderdown', $alt = 'Move Down', $enabled = true)
{
$alt = JText::_($alt);
$html = ' ';
if (($i < $n -1 || $i + $this->limitstart < $this->total - 1) && $condition)
{
if($enabled) {
$html = '<a href="#reorder" onclick="return listItemTask(\'cb'.$i.'\',\''.$task.'\')" title="'.$alt.'">';
$html .= ' <img src="images/downarrow.png" width="16" height="16" border="0" alt="'.$alt.'" />';
$html .= '</a>';
} else {
$html = '<img src="images/downarrow0.png" width="16" height="16" border="0" alt="'.$alt.'" />';
}
}
return $html;
}
function _list_footer($list)
{
// Initialize variables
$html = "<div class=\"list-footer\">\n";
$html .= "\n<div class=\"limit\">".JText::_('Display Num').$list['limitfield']."</div>";
$html .= $list['pageslinks'];
$html .= "\n<div class=\"counter\">".$list['pagescounter']."</div>";
$html .= "\n<input type=\"hidden\" name=\"limitstart\" value=\"".$list['limitstart']."\" />";
$html .= "\n</div>";
return $html;
}
function _list_render($list)
{
// Initialize variables
$html = null;
// Reverse output rendering for right-to-left display
$html .= '<< ';
$html .= $list['start']['data'];
$html .= ' < ';
$html .= $list['previous']['data'];
foreach( $list['pages'] as $page ) {
$html .= ' '.$page['data'];
}
$html .= ' '. $list['next']['data'];
$html .= ' >';
$html .= ' '. $list['end']['data'];
$html .= ' >>';
return $html;
}
function _item_active(&$item)
{
global $mainframe;
if ($mainframe->isAdmin())
{
if($item->base>0)
return "<a title=\"".$item->text."\" onclick=\"javascript: document.adminForm.limitstart.value=".$item->base."; submitform();return false;\">".$item->text."</a>";
else
return "<a title=\"".$item->text."\" onclick=\"javascript: document.adminForm.limitstart.value=0; submitform();return false;\">".$item->text."</a>";
} else {
return "<a title=\"".$item->text."\" href=\"".$item->link."\" class=\"pagenav\">".$item->text."</a>";
}
}
function _item_inactive(&$item)
{
global $mainframe;
if ($mainframe->isAdmin()) {
return "<span>".$item->text."</span>";
} else {
return "<span class=\"pagenav\">".$item->text."</span>";
}
}
/**
* Create and return the pagination data object
*
* @access public
* @return object Pagination data object
* @since 1.5
*/
function _buildDataObject()
{
// Initialize variables
$data = new stdClass();
$data->all = new JPaginationObject(JText::_('View All'));
if (!$this->_viewall) {
$data->all->base = '0';
$data->all->link = JRoute::_("&limitstart=");
}
// Set the start and previous data objects
$data->start = new JPaginationObject(JText::_('Start'));
$data->previous = new JPaginationObject(JText::_('Prev'));
if ($this->get('pages.current') > 1)
{
$page = ($this->get('pages.current') -2) * $this->limit;
$page = $page == 0 ? '' : $page; //set the empty for removal from route
$data->start->base = '0';
$data->start->link = JRoute::_("&limitstart=");
$data->previous->base = $page;
$data->previous->link = JRoute::_("&limitstart=".$page);
}
// Set the next and end data objects
$data->next = new JPaginationObject(JText::_('Next'));
$data->end = new JPaginationObject(JText::_('End'));
if ($this->get('pages.current') < $this->get('pages.total'))
{
$next = $this->get('pages.current') * $this->limit;
$end = ($this->get('pages.total') -1) * $this->limit;
$data->next->base = $next;
$data->next->link = JRoute::_("&limitstart=".$next);
$data->end->base = $end;
$data->end->link = JRoute::_("&limitstart=".$end);
}
$data->pages = array();
$stop = $this->get('pages.stop');
for ($i = $this->get('pages.start'); $i <= $stop; $i ++)
{
$offset = ($i -1) * $this->limit;
$offset = $offset == 0 ? '' : $offset; //set the empty for removal from route
$data->pages[$i] = new JPaginationObject($i);
if ($i != $this->get('pages.current') || $this->_viewall)
{
$data->pages[$i]->base = $offset;
$data->pages[$i]->link = JRoute::_("&limitstart=".$offset);
}
}
return $data;
}
}
/**
* Pagination object representing a particular item in the pagination lists
*
* @package Joomla.Framework
* @subpackage HTML
* @since 1.5
*/
class JPaginationObject extends JObject
{
var $text;
var $base;
var $link;
function __construct($text, $base=null, $link=null)
{
$this->text = $text;
$this->base = $base;
$this->link = $link;
}
}
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