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- <?php
- // +-----------------------------------------------------------------------+
- // | Copyright (c) 2002-2003, Richard Heyes, Lorenzo Alberton |
- // | All rights reserved. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | o Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | o 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.|
- // | o The names of the authors may not be used to endorse or promote |
- // | products derived from this software without specific prior written |
- // | permission. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- // | "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 COPYRIGHT |
- // | OWNER 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. |
- // | |
- // +-----------------------------------------------------------------------+
- // | Authors: Richard Heyes <richard@phpguru.org> |
- // | Lorenzo Alberton <l.alberton at quipo.it> |
- // +-----------------------------------------------------------------------+
- //
- // $Id: Jumping.php,v 1.5 2004/01/16 10:29:57 quipo Exp $
-
- require_once 'Pager/Common.php';
-
- /**
- * File Jumping.php
- *
- * @package Pager
- */
- /**
- * Pager_Jumping - Jumping Window Pager
- *
- * Handles paging a set of data. For usage see the example.php provided.
- *
- * @author Richard Heyes <richard@phpguru.org>,
- * @author Lorenzo Alberton <l.alberton at quipo.it>
- *
- * @version $Id: Jumping.php,v 1.5 2004/01/16 10:29:57 quipo Exp $
- * @package Pager
- */
- class Pager_Jumping extends Pager_Common
- {
-
- // {{{ Pager_Jumping()
-
- /**
- * Constructor
- *
- * @param mixed $options An associative array of option names
- * and their values
- * @access public
- */
- function Pager_Jumping($options = array())
- {
- $err = $this->_setOptions($options);
- if ($err !== PAGER_OK) {
- return $this->raiseError($this->errorMessage($err), $err);
- }
- $this->_generatePageData();
- $this->_setFirstLastText();
-
- $this->links .= $this->_getBackLink();
- $this->links .= $this->_getPageLinks();
- $this->links .= $this->_getNextLink();
-
- $this->linkTags .= $this->_getFirstLinkTag();
- $this->linkTags .= $this->_getPrevLinkTag();
- $this->linkTags .= $this->_getNextLinkTag();
- $this->linkTags .= $this->_getLastLinkTag();
- }
-
- // }}}
- // {{{ getPageIdByOffset()
-
- /**
- * Returns pageID for given offset
- *
- * @param $index Offset to get pageID for
- * @return int PageID for given offset
- */
- function getPageIdByOffset($index)
- {
- if (!isset($this->_pageData)) {
- $this->_generatePageData();
- }
-
- if (($index % $this->_perPage) > 0) {
- $pageID = ceil((float)$index / (float)$this->_perPage);
- } else {
- $pageID = $index / $this->_perPage;
- }
- return $pageID;
- }
-
- // }}}
- // {{{ getPageRangeByPageId()
-
- /**
- * Given a PageId, it returns the limits of the range of pages displayed.
- * While getOffsetByPageId() returns the offset of the data within the
- * current page, this method returns the offsets of the page numbers interval.
- * E.g., if you have pageId=3 and delta=10, it will return (1, 10).
- * PageID of 8 would give you (1, 10) as well, because 1 <= 8 <= 10.
- * PageID of 11 would give you (11, 20).
- * If the method is called without parameter, pageID is set to currentPage#.
- *
- * @param integer PageID to get offsets for
- * @return array First and last offsets
- * @access public
- */
- function getPageRangeByPageId($pageid = null)
- {
- $pageid = isset($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) * $this->_delta +1;
- return array(
- max($start, 1),
- min($start+$this->_delta-1, $this->_totalPages)
- );
- } else {
- return array(0, 0);
- }
- }
-
- // }}}
- // {{{ getLinks()
-
- /**
- * 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, $next_html='')
- {
- //BC hack
- if (!empty($next_html)) {
- $back_html = $pageID;
- $pageID = null;
- }
-
- if ($pageID != null) {
- $_sav = $this->_currentPage;
- $this->_currentPage = $pageID;
-
- $this->links = '';
- if ($this->_totalPages > $this->_delta) {
- $this->links .= $this->_printFirstPage();
- }
- $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();
- $all = $this->links;
- $linkTags = $this->linkTags;
-
- if ($pageID != null) {
- $this->_currentPage = $_sav;
- }
-
- return array(
- $back,
- $pages,
- trim($next),
- $first,
- $last,
- $all,
- $linkTags,
- 'back' => $back,
- 'pages' => $pages,
- 'next' => $next,
- 'first' => $first,
- 'last' => $last,
- 'all' => $all,
- 'linktags' => $linkTags
- );
- }
-
- // }}}
- // {{{ _getPageLinks()
-
- /**
- * Returns pages link
- *
- * @param $url URL to use in the link
- * [deprecated: use the constructor instead]
- * @return string Links
- * @access private
- */
- function _getPageLinks($url='')
- {
- //legacy setting... the preferred way to set an option now
- //is adding it to the constuctor
- if (!empty($url)) {
- $this->_path = $url;
- }
-
- $links = '';
-
- $limits = $this->getPageRangeByPageId($this->_currentPage);
-
- for ($i=$limits[0]; $i<=min($limits[1], $this->_totalPages); $i++) {
- if ($i != $this->_currentPage) {
- $this->range[$i] = false;
- $links .= sprintf('<a href="%s" %s title="%s">%d</a>',
- ( $this->_append ? $this->_url.$i : $this->_url.sprintf($this->_fileName, $i) ),
- $this->_classString,
- $this->_altPage.' '.$i,
- $i);
- } else {
- $this->range[$i] = true;
- $links .= $this->_curPageSpanPre . $i . $this->_curPageSpanPost;
- }
- $links .= $this->_spacesBefore
- . (($i != $this->_totalPages) ? $this->_separator.$this->_spacesAfter : '');
- }
-
- if ($this->_clearIfVoid) {
- //If there's only one page, don't display links
- if ($this->_totalPages < 2) $links = '';
- }
-
- return $links;
- }
-
- // }}}
- // }}}
- }
- ?>