Source for file Jumping.php
Documentation is available at Jumping.php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
* Contains the Pager_Jumping class
* LICENSE: Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* @author Lorenzo Alberton <l dot alberton at quipo dot it>
* @author Richard Heyes <richard@phpguru.org>,
* @copyright 2003-2006 Lorenzo Alberton, Richard Heyes
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* @version CVS: $Id: Jumping.php,v 1.14 2007/07/29 08:13:02 quipo Exp $
* @link http://pear.php.net/package/Pager
* require PEAR::Pager_Common base class
require_once 'Pager/Common.php';
* Pager_Jumping - Generic data paging class ("jumping window" style)
* Handles paging a set of data. For usage see the example.php provided.
* @author Lorenzo Alberton <l dot alberton at quipo dot it>
* @author Richard Heyes <richard@phpguru.org>,
* @copyright 2003-2005 Lorenzo Alberton, Richard Heyes
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @link http://pear.php.net/package/Pager
* @param array $options An associative array of option names
// {{{ getPageIdByOffset()
* Returns pageID for given offset
* @param $index Offset to get pageID for
* @return int PageID for given offset
if (!isset ($this->_pageData)) {
$this->_generatePageData ();
if (($index % $this->_perPage) > 0 ) {
$pageID = ceil((float) $index / (float) $this->_perPage);
$pageID = $index / $this->_perPage;
// {{{ getPageRangeByPageId()
* Given a PageId, it returns the limits of the range of pages displayed.
* While getOffsetByPageId() returns the offset of the data within the
* current page, this method returns the offsets of the page numbers interval.
* E.g., if you have pageId=3 and delta=10, it will return (1, 10).
* PageID of 8 would give you (1, 10) as well, because 1 <= 8 <= 10.
* PageID of 11 would give you (11, 20).
* If the method is called without parameter, pageID is set to currentPage#.
* @param integer PageID to get offsets for
* @return array First and last offsets
$pageid = isset ($pageid) ? (int) $pageid : $this->_currentPage;
if (isset ($this->_pageData[$pageid]) || is_null($this->_itemData)) {
// I'm sure I'm missing something here, but this formula works
// so I'm using it until I find something simpler.
$start = ((($pageid + (($this->_delta - ($pageid % $this->_delta))) % $this->_delta) / $this->_delta) - 1 ) * $this->_delta +1;
min($start+ $this->_delta-1 , $this->_totalPages)
* Returns back/next/first/last and page links,
* both as ordered and associative array.
* NB: in original PEAR::Pager this method accepted two parameters,
* $back_html and $next_html. Now the only parameter accepted is
* an integer ($pageID), since the html text for prev/next links can
* be set in the constructor. If a second parameter is provided, then
* the method act as it previously did. This hack's only purpose is to
* mantain backward compatibility.
* @param integer $pageID Optional pageID. If specified, links
* for that page are provided instead of current one.
* [ADDED IN NEW PAGER VERSION]
* @param string $next_html HTML to put inside the next link
* [deprecated: use the constructor instead]
* @return array Back/pages/next links
function getLinks($pageID=null , $next_html= '')
if (!empty ($next_html)) {
if ($this->_totalPages > $this->_delta) {
$this->links .= $this->_printFirstPage ();
$_sav = $this->_currentPage;
$this->_currentPage = $pageID;
$this->links .= $this->_getBackLink ('', $back_html);
$this->links .= $this->_getPageLinks ();
$this->links .= $this->_getNextLink ('', $next_html);
if ($this->_totalPages > $this->_delta) {
$this->links .= $this->_printLastPage ();
$back = str_replace(' ', '', $this->_getBackLink ());
$next = str_replace(' ', '', $this->_getNextLink ());
$pages = $this->_getPageLinks ();
$first = $this->_printFirstPage ();
$last = $this->_printLastPage ();
$this->_currentPage = $_sav;
* @param $url URL to use in the link
* [deprecated: use the constructor instead]
function _getPageLinks ($url = '')
//legacy setting... the preferred way to set an option now
//is adding it to the constuctor
//If there's only one page, don't display links
if ($this->_clearIfVoid && ($this->_totalPages < 2 )) {
for ($i= $limits[0 ]; $i<= min($limits[1 ], $this->_totalPages); $i++ ) {
if ($i != $this->_currentPage) {
$this->range[$i] = false;
$this->_linkData[$this->_urlVar] = $i;
$links .= $this->_renderLink ($this->_altPage. ' '. $i, $i);
$links .= $this->_curPageSpanPre . $i . $this->_curPageSpanPost;
$links .= $this->_spacesBefore
. (($i != $this->_totalPages) ? $this->_separator. $this->_spacesAfter : '');
Documentation generated on Sun, 29 Jul 2007 10:30:08 -0400 by phpDocumentor 1.4.0. PEAR Logo Copyright © PHP Group 2004.
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