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| <?php |
| /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
| |
| /** |
| * Contains the Pager_Sliding class |
| * |
| * PHP versions 4 and 5 |
| * |
| * 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. |
| * |
| * @category HTML |
| * @package Pager |
| * @author Lorenzo Alberton <l dot alberton at quipo dot it> |
| * @copyright 2003-2006 Lorenzo Alberton |
| * @license http://www.debian.org/misc/bsd.license BSD License (3 Clause) |
| * @version CVS: $Id: Sliding.php 62 2010-05-06 13:21:56Z jpm $ |
| * @link http://pear.php.net/package/Pager |
| */ |
| |
| /** |
| * require PEAR::Pager_Common base class |
| */ |
| require_once dirname(__FILE__).'/Common.php'; |
| |
| /** |
| * Pager_Sliding - Generic data paging class ("sliding window" style) |
| * Usage examples can be found in the PEAR manual |
| * |
| * @category HTML |
| * @package Pager |
| * @author Lorenzo Alberton <l dot alberton at quipo dot it> |
| * @copyright 2003-2005 Lorenzo Alberton |
| * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
| * @link http://pear.php.net/package/Pager |
| */ |
| class Pager_Sliding extends Pager_Common |
| { |
| // {{{ Pager_Sliding() |
| |
| /** |
| * Constructor |
| * |
| * @param array $options An associative array of option names |
| * and their values |
| * @access public |
| */ |
| function Pager_Sliding($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->build(); |
| } |
| |
| // }}} |
| // {{{ 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 = $max_surplus = 0; |
| } |
| return array( |
| max($pageid - $this->_delta - $max_surplus, 1), |
| min($pageid + $this->_delta + $min_surplus, $this->_totalPages) |
| ); |
| } |
| 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' => $linkTags |
| ); |
| } |
| |
| // }}} |
| // {{{ _getPageLinks() |
| |
| /** |
| * Returns pages link |
| * |
| * @return string Links |
| * @access private |
| */ |
| function _getPageLinks($url = '') |
| { |
| //legacy setting... the preferred way to set an option now |
| //is adding it to the constuctor |
| if (!empty($url)) { |
| $this->_path = $url; |
| } |
| |
| //If there's only one page, don't display links |
| if ($this->_clearIfVoid && ($this->_totalPages < 2)) { |
| return ''; |
| } |
| |
| $links = ''; |
| if ($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++) { |
| $print_separator_flag = ($i != $this->_currentPage + $this->_delta); // && ($i != $this->_totalPages - 1) |
| |
| $this->range[$i] = false; |
| $this->_linkData[$this->_urlVar] = $i; |
| $links .= $this->_renderLink($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 |
| $print_separator_flag = (($i != $this->_currentPage + $this->_delta) && ($i != $this->_totalPages)); |
| |
| if ($i == $this->_currentPage) { |
| $this->range[$i] = true; |
| $links .= $this->_curPageSpanPre . $i . $this->_curPageSpanPost; |
| } else { |
| $this->range[$i] = false; |
| $this->_linkData[$this->_urlVar] = $i; |
| $links .= $this->_renderLink($this->_altPage.' '.$i, $i); |
| } |
| $links .= $this->_spacesBefore |
| . ($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++) { |
| $print_separator_flag = ($expansion_after != 1); |
| $this->range[$i] = false; |
| $this->_linkData[$this->_urlVar] = $i; |
| $links .= $this->_renderLink($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; |
| $this->_linkData[$this->_urlVar] = $i; |
| $links .= $this->_renderLink($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 : ''); |
| } |
| } |
| return $links; |
| } |
| |
| // }}} |
| } |
| ?> |