home *** CD-ROM | disk | FTP | other *** search
- <?php
- // +----------------------------------------------------------------------+
- // | PEAR :: Pager_Sliding |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2003 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Author: Lorenzo Alberton <l.alberton at quipo.it> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Sliding.php,v 1.5 2004/01/16 10:29:57 quipo Exp $
-
- require_once 'Pager/Common.php';
-
- /**
- * File Sliding.php
- *
- * @package Pager
- */
- /**
- * Pager_Sliding - Generic data paging class ("sliding window" style)
- *
- * Usage examples can be found in the doc provided
- *
- * @author Lorenzo Alberton <l.alberton at quipo.it>
- * @version $Id: Sliding.php,v 1.5 2004/01/16 10:29:57 quipo Exp $
- * @package Pager
- */
- class Pager_Sliding extends Pager_Common
- {
- // {{{ Pager_Sliding()
-
- /**
- * Constructor
- *
- * @param mixed $options An associative array of option names
- * and their values
- * @access public
- */
- function Pager_Sliding($options = array())
- {
- //set default Pager_Sliding options
- $this->_delta = 2;
- $this->_prevImg = '«';
- $this->_nextImg = '»';
- $this->_separator = '|';
- $this->_spacesBeforeSeparator = 3;
- $this->_spacesAfterSeparator = 3;
- $this->_curPageSpanPre = '<b><u>';
- $this->_curPageSpanPost = '</u></b>';
-
- //set custom options
- $err = $this->_setOptions($options);
- if ($err !== PAGER_OK) {
- return $this->raiseError($this->errorMessage($err), $err);
- }
- $this->_generatePageData();
- $this->_setFirstLastText();
-
- if ($this->_totalPages > (2 * $this->_delta + 1)) {
- $this->links .= $this->_printFirstPage();
- }
-
- $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 .= $this->_getLastLinkTag();
-
- if ($this->_totalPages > (2 * $this->_delta + 1)) {
- $this->links .= $this->_printLastPage();
- }
- }
-
- // }}}
- // {{{ getPageIdByOffset()
-
- /**
- * "Overload" PEAR::Pager method. VOID. Not needed here...
- * @param integer $index Offset to get pageID for
- * @deprecated
- * @access public
- */
- function getPageIdByOffset($index=null) { }
-
- // }}}
- // {{{ 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=5 and delta=2, it will return (3, 7).
- * PageID of 9 would give you (4, 8).
- * 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)) {
- $this->_generatePageData();
- }
- if (isset($this->_pageData[$pageid]) || is_null($this->_itemData)) {
- if ($this->_expanded) {
- $min_surplus = ($pageid <= $this->_delta) ? ($this->_delta - $pageid + 1) : 0;
- $max_surplus = ($pageid >= ($this->_totalPages - $this->_delta)) ?
- ($pageid - ($this->_totalPages - $this->_delta)) : 0;
- } else {
- $min_surplus = 0;
- $max_surplus = 0;
- }
- return array( max($pageid - $this->_delta - $max_surplus, 1),
- min($pageid + $this->_delta + $min_surplus, $this->_totalPages));
- } else {
- return array(0, 0);
- }
- }
-
- // }}}
- // {{{ getLinks()
-
- /**
- * Returns back/next/first/last and page links,
- * both as ordered and associative array.
- *
- * @param integer $pageID Optional pageID. If specified, links
- * for that page are provided instead of current one.
- * @return array back/pages/next/first/last/all links
- * @access public
- */
- function getLinks($pageID = null)
- {
- if ($pageID != null) {
- $_sav = $this->_currentPage;
- $this->_currentPage = $pageID;
-
- $this->links = '';
- if ($this->_totalPages > (2 * $this->_delta + 1)) {
- $this->links .= $this->_printFirstPage();
- }
- $this->links .= $this->_getBackLink();
- $this->links .= $this->_getPageLinks();
- $this->links .= $this->_getNextLink();
- if ($this->_totalPages > (2 * $this->_delta + 1)) {
- $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' => $linkTags
- );
- }
-
- // }}}
- // {{{ _getPageLinks()
-
- /**
- * Returns pages link
- *
- * @return string Links
- * @access private
- */
- function _getPageLinks()
- {
- //legacy setting... the preferred way to set an option now
- //is adding it to the constuctor
- if (!empty($url)) {
- $this->_path = $url;
- }
- $links = '';
- if ($this->_totalPages > (2 * $this->_delta + 1)) {
- if ($this->_expanded) {
- if (($this->_totalPages - $this->_delta) <= $this->_currentPage) {
- $_expansion_before = $this->_currentPage - ($this->_totalPages - $this->_delta);
- } else {
- $_expansion_before = 0;
- }
- for ($i = $this->_currentPage - $this->_delta - $_expansion_before; $_expansion_before; $_expansion_before--, $i++) {
- if (($i != $this->_currentPage + $this->_delta)){ // && ($i != $this->_totalPages - 1)) {
- $_print_separator_flag = true;
- } else {
- $_print_separator_flag = false;
- }
-
- $this->range[$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)
- . $this->_spacesBefore
- . ($_print_separator_flag ? $this->_separator.$this->_spacesAfter : '');
- }
- }
-
- $_expansion_after = 0;
- for ($i = $this->_currentPage - $this->_delta; ($i <= $this->_currentPage + $this->_delta) && ($i <= $this->_totalPages); $i++) {
- if ($i<1) {
- $_expansion_after++;
- continue;
- }
-
- // check when to print separator
- if (($i != $this->_currentPage + $this->_delta) && ($i != $this->_totalPages )) {
- $_print_separator_flag = true;
- } else {
- $_print_separator_flag = false;
- }
-
- if ($i == $this->_currentPage) {
- $this->range[$i] = true;
- $links .= $this->_curPageSpanPre . $i . $this->_curPageSpanPost
- . $this->_spacesBefore
- . ($_print_separator_flag ? $this->_separator.$this->_spacesAfter : '');
- } else {
- $this->range[$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)
- . $this->_spacesBefore
- . ($_print_separator_flag ? $this->_separator.$this->_spacesAfter : '');
- }
- }
-
- if ($this->_expanded && $_expansion_after) {
- $links .= $this->_separator . $this->_spacesAfter;
- for ($i = $this->_currentPage + $this->_delta +1; $_expansion_after; $_expansion_after--, $i++) {
- if (($_expansion_after != 1)) {
- $_print_separator_flag = true;
- } else {
- $_print_separator_flag = false;
- }
-
- $this->range[$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)
- . $this->_spacesBefore
- . ($_print_separator_flag ? $this->_separator.$this->_spacesAfter : '');
- }
- }
-
- } else {
- //if $this->_totalPages <= (2*Delta+1) show them all
- for ($i=1; $i<=$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;
- }
-
- // }}}
- }
- ?>