File Source for Common.php

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Contains the Pager_Common 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>
* @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: Common.php 12273 2007-05-03 14:49:21Z elixir_julian $
* @link http://pear.php.net/package/Pager
*/
/**
* Two constants used to guess the path- and file-name of the page
* when the user doesn't set any other value
*/
if (substr(api_get_self(), -1) == '/') {
define('CURRENT_FILENAME', '');
define('CURRENT_PATHNAME', 'http://'.$_SERVER['HTTP_HOST'].str_replace('\\', '/', api_get_self()));
} else {
define('CURRENT_FILENAME', preg_replace('/(.*)\?.*/', '\\1', basename(api_get_self())));
define('CURRENT_PATHNAME', str_replace('\\', '/', dirname(api_get_self())));
}
/**
* Error codes
*/
define('PAGER_OK', 0);
define('ERROR_PAGER', -1);
define('ERROR_PAGER_INVALID', -2);
define('ERROR_PAGER_INVALID_PLACEHOLDER', -3);
define('ERROR_PAGER_INVALID_USAGE', -4);
define('ERROR_PAGER_NOT_IMPLEMENTED', -5);
/**
* Pager_Common - Common base class for [Sliding|Jumping] Window Pager
* Extend this class to write a custom paging class
*
* @category HTML
* @package Pager
* @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
*/
class Pager_Common
{
// {{{ class vars
/**
* @var integer number of items
* @access private
*/
var $_totalItems;
/**
* @var integer number of items per page
* @access private
*/
var $_perPage = 10;
/**
* @var integer number of page links for each window
* @access private
*/
var $_delta = 10;
/**
* @var integer current page number
* @access private
*/
var $_currentPage = 1;
/**
* @var integer total pages number
* @access private
*/
var $_totalPages = 1;
/**
* @var string CSS class for links
* @access private
*/
var $_linkClass = '';
/**
* @var string wrapper for CSS class name
* @access private
*/
var $_classString = '';
/**
* @var string path name
* @access private
*/
var $_path = CURRENT_PATHNAME;
/**
* @var string file name
* @access private
*/
var $_fileName = CURRENT_FILENAME;
/**
* @var boolean If false, don't override the fileName option. Use at your own risk.
* @access private
*/
var $_fixFileName = true;
/**
* @var boolean you have to use FALSE with mod_rewrite
* @access private
*/
var $_append = true;
/**
* @var string specifies which HTTP method to use
* @access private
*/
var $_httpMethod = 'GET';
/**
* @var string specifies which HTML form to use
* @access private
*/
var $_formID = '';
/**
* @var boolean whether or not to import submitted data
* @access private
*/
var $_importQuery = true;
/**
* @var string name of the querystring var for pageID
* @access private
*/
var $_urlVar = 'pageID';
/**
* @var array data to pass through the link
* @access private
*/
var $_linkData = array();
/**
* @var array additional URL vars
* @access private
*/
var $_extraVars = array();
/**
* @var array URL vars to ignore
* @access private
*/
var $_excludeVars = array();
/**
* @var boolean TRUE => expanded mode (for Pager_Sliding)
* @access private
*/
var $_expanded = true;
/**
* @var boolean TRUE => show accesskey attribute on <a> tags
* @access private
*/
var $_accesskey = false;
/**
* @var string extra attributes for the <a> tag
* @access private
*/
var $_attributes = '';
/**
* @var string alt text for "first page" (use "%d" placeholder for page number)
* @access private
*/
var $_altFirst = 'first page';
/**
* @var string alt text for "previous page"
* @access private
*/
var $_altPrev = 'previous page';
/**
* @var string alt text for "next page"
* @access private
*/
var $_altNext = 'next page';
/**
* @var string alt text for "last page" (use "%d" placeholder for page number)
* @access private
*/
var $_altLast = 'last page';
/**
* @var string alt text for "page"
* @access private
*/
var $_altPage = 'page';
/**
* @var string image/text to use as "prev" link
* @access private
*/
var $_prevImg = '<< Back';
/**
* @var string image/text to use as "next" link
* @access private
*/
var $_nextImg = 'Next >>';
/**
* @var string link separator
* @access private
*/
var $_separator = '';
/**
* @var integer number of spaces before separator
* @access private
*/
var $_spacesBeforeSeparator = 0;
/**
* @var integer number of spaces after separator
* @access private
*/
var $_spacesAfterSeparator = 1;
/**
* @var string CSS class name for current page link
* @access private
*/
var $_curPageLinkClassName = '';
/**
* @var string Text before current page link
* @access private
*/
var $_curPageSpanPre = '';
/**
* @var string Text after current page link
* @access private
*/
var $_curPageSpanPost = '';
/**
* @var string Text before first page link
* @access private
*/
var $_firstPagePre = '[';
/**
* @var string Text to be used for first page link
* @access private
*/
var $_firstPageText = '';
/**
* @var string Text after first page link
* @access private
*/
var $_firstPagePost = ']';
/**
* @var string Text before last page link
* @access private
*/
var $_lastPagePre = '[';
/**
* @var string Text to be used for last page link
* @access private
*/
var $_lastPageText = '';
/**
* @var string Text after last page link
* @access private
*/
var $_lastPagePost = ']';
/**
* @var string Will contain the HTML code for the spaces
* @access private
*/
var $_spacesBefore = '';
/**
* @var string Will contain the HTML code for the spaces
* @access private
*/
var $_spacesAfter = '';
/**
* @var string $_firstLinkTitle
* @access private
*/
var $_firstLinkTitle = 'first page';
/**
* @var string $_nextLinkTitle
* @access private
*/
var $_nextLinkTitle = 'next page';
/**
* @var string $_prevLinkTitle
* @access private
*/
var $_prevLinkTitle = 'previous page';
/**
* @var string $_lastLinkTitle
* @access private
*/
var $_lastLinkTitle = 'last page';
/**
* @var string Text to be used for the 'show all' option in the select box
* @access private
*/
var $_showAllText = '';
/**
* @var array data to be paged
* @access private
*/
var $_itemData = null;
/**
* @var boolean If TRUE and there's only one page, links aren't shown
* @access private
*/
var $_clearIfVoid = true;
/**
* @var boolean Use session for storing the number of items per page
* @access private
*/
var $_useSessions = false;
/**
* @var boolean Close the session when finished reading/writing data
* @access private
*/
var $_closeSession = false;
/**
* @var string name of the session var for number of items per page
* @access private
*/
var $_sessionVar = 'setPerPage';
/**
* Pear error mode (when raiseError is called)
* (see PEAR doc)
*
* @var int $_pearErrorMode
* @access private
*/
var $_pearErrorMode = null;
// }}}
// {{{ public vars
/**
* @var string Complete set of links
* @access public
*/
var $links = '';
/**
* @var string Complete set of link tags
* @access public
*/
var $linkTags = '';
/**
* @var array Array with a key => value pair representing
* page# => bool value (true if key==currentPageNumber).
* can be used for extreme customization.
* @access public
*/
var $range = array();
/**
* @var array list of available options (safety check)
* @access private
*/
var $_allowed_options = array(
'totalItems',
'perPage',
'delta',
'linkClass',
'path',
'fileName',
'fixFileName',
'append',
'httpMethod',
'formID',
'importQuery',
'urlVar',
'altFirst',
'altPrev',
'altNext',
'altLast',
'altPage',
'prevImg',
'nextImg',
'expanded',
'accesskey',
'attributes',
'separator',
'spacesBeforeSeparator',
'spacesAfterSeparator',
'curPageLinkClassName',
'curPageSpanPre',
'curPageSpanPost',
'firstPagePre',
'firstPageText',
'firstPagePost',
'lastPagePre',
'lastPageText',
'lastPagePost',
'firstLinkTitle',
'nextLinkTitle',
'prevLinkTitle',
'lastLinkTitle',
'showAllText',
'itemData',
'clearIfVoid',
'useSessions',
'closeSession',
'sessionVar',
'pearErrorMode',
'extraVars',
'excludeVars',
'currentPage',
);
// }}}
// {{{ build()
/**
* Generate or refresh the links and paged data after a call to setOptions()
*
* @access public
*/
function build()
{
$msg = 'PEAR::Pager Error:'
.' function "build()" not implemented.';
return $this->raiseError($msg, ERROR_PAGER_NOT_IMPLEMENTED);
}
// }}}
// {{{ getPageData()
/**
* Returns an array of current pages data
*
* @param $pageID Desired page ID (optional)
* @return array Page data
* @access public
*/
function getPageData($pageID = null)
{
$pageID = empty($pageID) ? $this->_currentPage : $pageID;
if (!isset($this->_pageData)) {
$this->_generatePageData();
}
if (!empty($this->_pageData[$pageID])) {
return $this->_pageData[$pageID];
}
return array();
}
// }}}
// {{{ getPageIdByOffset()
/**
* Returns pageID for given offset
*
* @param $index Offset to get pageID for
* @return int PageID for given offset
*/
function getPageIdByOffset($index)
{
$msg = 'PEAR::Pager Error:'
.' function "getPageIdByOffset()" not implemented.';
return $this->raiseError($msg, ERROR_PAGER_NOT_IMPLEMENTED);
}
// }}}
// {{{ getOffsetByPageId()
/**
* Returns offsets for given pageID. Eg, if you
* pass it pageID one and your perPage limit is 10
* it will return (1, 10). PageID of 2 would
* give you (11, 20).
*
* @param integer PageID to get offsets for
* @return array First and last offsets
* @access public
*/
function getOffsetByPageId($pageid = null)
{
$pageid = isset($pageid) ? $pageid : $this->_currentPage;
if (!isset($this->_pageData)) {
$this->_generatePageData();
}
if (isset($this->_pageData[$pageid]) || is_null($this->_itemData)) {
return array(
max(($this->_perPage * ($pageid - 1)) + 1, 1),
min($this->_totalItems, $this->_perPage * $pageid)
);
} else {
return array(0, 0);
}
}
// }}}
// {{{ getPageRangeByPageId()
/**
* @param integer PageID to get offsets for
* @return array First and last offsets
*/
function getPageRangeByPageId($pageID)
{
$msg = 'PEAR::Pager Error:'
.' function "getPageRangeByPageId()" not implemented.';
return $this->raiseError($msg, ERROR_PAGER_NOT_IMPLEMENTED);
}
// }}}
// {{{ 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 factory. If a second parameter is provided, then
* the method act as it previously did. This hack was done to mantain
* backward compatibility only.
*
* @param integer $pageID Optional pageID. If specified, links
* for that page are provided instead of current one. [ADDED IN NEW PAGER VERSION]
* @param string $next_html HTML to put inside the next link [deprecated: use the factory instead]
* @return array back/next/first/last and page links
*/
function getLinks($pageID=null, $next_html='')
{
$msg = 'PEAR::Pager Error:'
.' function "getLinks()" not implemented.';
return $this->raiseError($msg, ERROR_PAGER_NOT_IMPLEMENTED);
}
// }}}
// {{{ getCurrentPageID()
/**
* Returns ID of current page
*
* @return integer ID of current page
*/
function getCurrentPageID()
{
return $this->_currentPage;
}
// }}}
// {{{ getNextPageID()
/**
* Returns next page ID. If current page is last page
* this function returns FALSE
*
* @return mixed Next page ID
*/
function getNextPageID()
{
return ($this->getCurrentPageID() == $this->numPages() ? false : $this->getCurrentPageID() + 1);
}
// }}}
// {{{ getPreviousPageID()
/**
* Returns previous page ID. If current page is first page
* this function returns FALSE
*
* @return mixed Previous pages' ID
*/
function getPreviousPageID()
{
return $this->isFirstPage() ? false : $this->getCurrentPageID() - 1;
}
// }}}
// {{{ numItems()
/**
* Returns number of items
*
* @return int Number of items
*/
function numItems()
{
return $this->_totalItems;
}
// }}}
// {{{ numPages()
/**
* Returns number of pages
*
* @return int Number of pages
*/
function numPages()
{
return (int)$this->_totalPages;
}
// }}}
// {{{ isFirstPage()
/**
* Returns whether current page is first page
*
* @return bool First page or not
*/
function isFirstPage()
{
return ($this->_currentPage < 2);
}
// }}}
// {{{ isLastPage()
/**
* Returns whether current page is last page
*
* @return bool Last page or not
*/
function isLastPage()
{
return ($this->_currentPage == $this->_totalPages);
}
// }}}
// {{{ isLastPageComplete()
/**
* Returns whether last page is complete
*
* @return bool Last age complete or not
*/
function isLastPageComplete()
{
return !($this->_totalItems % $this->_perPage);
}
// }}}
// {{{ _generatePageData()
/**
* Calculates all page data
* @access private
*/
function _generatePageData()
{
// Been supplied an array of data?
if (!is_null($this->_itemData)) {
$this->_totalItems = count($this->_itemData);
}
$this->_totalPages = ceil((float)$this->_totalItems / (float)$this->_perPage);
$i = 1;
if (!empty($this->_itemData)) {
foreach ($this->_itemData as $key => $value) {
$this->_pageData[$i][$key] = $value;
if (count($this->_pageData[$i]) >= $this->_perPage) {
$i++;
}
}
} else {
$this->_pageData = array();
}
//prevent URL modification
$this->_currentPage = min($this->_currentPage, $this->_totalPages);
}
// }}}
// {{{ _renderLink()
/**
* Renders a link using the appropriate method
*
* @param altText Alternative text for this link (title property)
* @param linkText Text contained by this link
* @return string The link in string form
* @access private
*/
function _renderLink($altText, $linkText)
{
if ($this->_httpMethod == 'GET') {
if ($this->_append) {
$href = '?' . $this->_http_build_query_wrapper($this->_linkData);
} else {
$href = str_replace('%d', $this->_linkData[$this->_urlVar], $this->_fileName);
}
return sprintf('<a href="%s"%s%s%s title="%s">%s</a>',
htmlentities($this->_url . $href),
empty($this->_classString) ? '' : ' '.$this->_classString,
empty($this->_attributes) ? '' : ' '.$this->_attributes,
empty($this->_accesskey) ? '' : ' accesskey="'.$this->_linkData[$this->_urlVar].'"',
$altText,
$linkText
);
} elseif ($this->_httpMethod == 'POST') {
return sprintf("<a href='javascript:void(0)' onclick='%s'%s%s%s title='%s'>%s</a>",
$this->_generateFormOnClick($this->_url, $this->_linkData),
empty($this->_classString) ? '' : ' '.$this->_classString,
empty($this->_attributes) ? '' : ' '.$this->_attributes,
empty($this->_accesskey) ? '' : ' accesskey=\''.$this->_linkData[$this->_urlVar].'\'',
$altText,
$linkText
);
}
return '';
}
// }}}
// {{{ _generateFormOnClick()
/**
* Mimics http_build_query() behavior in the way the data
* in $data will appear when it makes it back to the server.
* For example:
* $arr = array('array' => array(array('hello', 'world'),
* 'things' => array('stuff', 'junk'));
* http_build_query($arr)
* and _generateFormOnClick('foo.php', $arr)
* will yield
* $_REQUEST['array'][0][0] === 'hello'
* $_REQUEST['array'][0][1] === 'world'
* $_REQUEST['array']['things'][0] === 'stuff'
* $_REQUEST['array']['things'][1] === 'junk'
*
* However, instead of generating a query string, it generates
* Javascript to create and submit a form.
*
* @param string $formAction where the form should be submitted
* @param array $data the associative array of names and values
* @return string A string of javascript that generates a form and submits it
* @access private
*/
function _generateFormOnClick($formAction, $data)
{
// Check we have an array to work with
if (!is_array($data)) {
trigger_error(
'_generateForm() Parameter 1 expected to be Array or Object. Incorrect value given.',
E_USER_WARNING
);
return false;
}
if (!empty($this->_formID)) {
$str = 'var form = document.getElementById("'.$this->_formID.'"); var input = ""; ';
} else {
$str = 'var form = document.createElement("form"); var input = ""; ';
}
// We /shouldn't/ need to escape the URL ...
$str .= sprintf('form.action = "%s"; ', htmlentities($formAction));
$str .= sprintf('form.method = "%s"; ', $this->_httpMethod);
foreach ($data as $key => $val) {
$str .= $this->_generateFormOnClickHelper($val, $key);
}
if (empty($this->_formID)) {
$str .= 'document.getElementsByTagName("body")[0].appendChild(form);';
}
$str .= 'form.submit(); return false;';
return $str;
}
// }}}
// {{{ _generateFormOnClickHelper
/**
* This is used by _generateFormOnClick().
* Recursively processes the arrays, objects, and literal values.
*
* @param data Data that should be rendered
* @param prev The name so far
* @return string A string of Javascript that creates form inputs
* representing the data
* @access private
*/
function _generateFormOnClickHelper($data, $prev = '')
{
$str = '';
if (is_array($data) || is_object($data)) {
// foreach key/visible member
foreach ((array)$data as $key => $val) {
// append [$key] to prev
$tempKey = sprintf('%s[%s]', $prev, $key);
$str .= $this->_generateFormOnClickHelper($val, $tempKey);
}
} else { // must be a literal value
// escape newlines and carriage returns
$search = array("\n", "\r");
$replace = array('\n', '\n');
$escapedData = str_replace($search, $replace, $data);
// am I forgetting any dangerous whitespace?
// would a regex be faster?
// if it's already encoded, don't encode it again
if (!$this->_isEncoded($escapedData)) {
$escapedData = urlencode($escapedData);
}
$escapedData = htmlentities($escapedData, ENT_QUOTES, 'UTF-8');
$str .= 'input = document.createElement("input"); ';
$str .= 'input.type = "hidden"; ';
$str .= sprintf('input.name = "%s"; ', $prev);
$str .= sprintf('input.value = "%s"; ', $escapedData);
$str .= 'form.appendChild(input); ';
}
return $str;
}
// }}}
// {{{ _getLinksData()
/**
* Returns the correct link for the back/pages/next links
*
* @return array Data
* @access private
*/
function _getLinksData()
{
$qs = array();
if ($this->_importQuery) {
if ($this->_httpMethod == 'POST') {
$qs = $_POST;
} elseif ($this->_httpMethod == 'GET') {
$qs = $_GET;
}
}
if (count($this->_extraVars)){
$this->_recursive_urldecode($this->_extraVars);
}
$qs = array_merge($qs, $this->_extraVars);
foreach ($this->_excludeVars as $exclude) {
if (array_key_exists($exclude, $qs)) {
unset($qs[$exclude]);
}
}
if (count($qs) && get_magic_quotes_gpc()){
$this->_recursive_stripslashes($qs);
}
return $qs;
}
// }}}
// {{{ _recursive_stripslashes()
/**
* Helper method
* @param mixed $var
* @access private
*/
function _recursive_stripslashes(&$var)
{
if (is_array($var)) {
foreach (array_keys($var) as $k) {
$this->_recursive_stripslashes($var[$k]);
}
} else {
$var = stripslashes($var);
}
}
// }}}
// {{{ _recursive_urldecode()
/**
* Helper method
* @param mixed $var
* @access private
*/
function _recursive_urldecode(&$var)
{
if (is_array($var)) {
foreach (array_keys($var) as $k) {
$this->_recursive_urldecode($var[$k]);
}
} else {
$trans_tbl = array_flip(get_html_translation_table(HTML_ENTITIES));
$var = strtr($var, $trans_tbl);
}
}
// }}}
// {{{ _getBackLink()
/**
* Returns back link
*
* @param $url URL to use in the link [deprecated: use the factory instead]
* @param $link HTML to use as the link [deprecated: use the factory instead]
* @return string The link
* @access private
*/
function _getBackLink($url='', $link='')
{
//legacy settings... the preferred way to set an option
//now is passing it to the factory
if (!empty($url)) {
$this->_path = $url;
}
if (!empty($link)) {
$this->_prevImg = $link;
}
$back = '';
if ($this->_currentPage > 1) {
$this->_linkData[$this->_urlVar] = $this->getPreviousPageID();
$back = $this->_renderLink($this->_altPrev, $this->_prevImg)
. $this->_spacesBefore . $this->_spacesAfter;
}
return $back;
}
// }}}
// {{{ _getPageLinks()
/**
* Returns pages link
*
* @param $url URL to use in the link [deprecated: use the factory instead]
* @return string Links
* @access private
*/
function _getPageLinks($url='')
{
$msg = 'PEAR::Pager Error:'
.' function "_getPageLinks()" not implemented.';
return $this->raiseError($msg, ERROR_PAGER_NOT_IMPLEMENTED);
}
// }}}
// {{{ _getNextLink()
/**
* Returns next link
*
* @param $url URL to use in the link [deprecated: use the factory instead]
* @param $link HTML to use as the link [deprecated: use the factory instead]
* @return string The link
* @access private
*/
function _getNextLink($url='', $link='')
{
//legacy settings... the preferred way to set an option
//now is passing it to the factory
if (!empty($url)) {
$this->_path = $url;
}
if (!empty($link)) {
$this->_nextImg = $link;
}
$next = '';
if ($this->_currentPage < $this->_totalPages) {
$this->_linkData[$this->_urlVar] = $this->getNextPageID();
$next = $this->_spacesAfter
. $this->_renderLink($this->_altNext, $this->_nextImg)
. $this->_spacesBefore . $this->_spacesAfter;
}
return $next;
}
// }}}
// {{{ _getFirstLinkTag()
/**
* @return string
* @access private
*/
function _getFirstLinkTag()
{
if ($this->isFirstPage() || ($this->_httpMethod != 'GET')) {
return '';
}
return sprintf('<link rel="first" href="%s" title="%s" />'."\n",
$this->_getLinkTagUrl(1),
$this->_firstLinkTitle
);
}
// }}}
// {{{ _getPrevLinkTag()
/**
* Returns previous link tag
*
* @return string the link tag
* @access private
*/
function _getPrevLinkTag()
{
if ($this->isFirstPage() || ($this->_httpMethod != 'GET')) {
return '';
}
return sprintf('<link rel="previous" href="%s" title="%s" />'."\n",
$this->_getLinkTagUrl($this->getPreviousPageID()),
$this->_prevLinkTitle
);
}
// }}}
// {{{ _getNextLinkTag()
/**
* Returns next link tag
*
* @return string the link tag
* @access private
*/
function _getNextLinkTag()
{
if ($this->isLastPage() || ($this->_httpMethod != 'GET')) {
return '';
}
return sprintf('<link rel="next" href="%s" title="%s" />'."\n",
$this->_getLinkTagUrl($this->getNextPageID()),
$this->_nextLinkTitle
);
}
// }}}
// {{{ _getLastLinkTag()
/**
* @return string the link tag
* @access private
*/
function _getLastLinkTag()
{
if ($this->isLastPage() || ($this->_httpMethod != 'GET')) {
return '';
}
return sprintf('<link rel="last" href="%s" title="%s" />'."\n",
$this->_getLinkTagUrl($this->_totalPages),
$this->_lastLinkTitle
);
}
// }}}
// {{{ _getLinkTagUrl()
/**
* Helper method
* @return string the link tag url
* @access private
*/
function _getLinkTagUrl($pageID)
{
$this->_linkData[$this->_urlVar] = $pageID;
if ($this->_append) {
$href = '?' . $this->_http_build_query_wrapper($this->_linkData);
} else {
$href = str_replace('%d', $this->_linkData[$this->_urlVar], $this->_fileName);
}
return htmlentities($this->_url . $href);
}
// }}}
// {{{ getPerPageSelectBox()
/**
* Returns a string with a XHTML SELECT menu,
* useful for letting the user choose how many items per page should be
* displayed. If parameter useSessions is TRUE, this value is stored in
* a session var. The string isn't echoed right now so you can use it
* with template engines.
*
* @param integer $start
* @param integer $end
* @param integer $step
* @param boolean $showAllData If true, perPage is set equal to totalItems.
* @param array (or string $optionText for BC reasons)
* - 'optionText': text to show in each option.
* Use '%d' where you want to see the number of pages selected.
* - 'attributes': (html attributes) Tag attributes or
* HTML attributes (id="foo" pairs), will be inserted in the
* <select> tag
* @return string xhtml select box
* @access public
*/
function getPerPageSelectBox($start=5, $end=30, $step=5, $showAllData=false, $extraParams=array())
{
require_once 'Pager/HtmlWidgets.php';
$widget =& new Pager_HtmlWidgets($this);
return $widget->getPerPageSelectBox($start, $end, $step, $showAllData, $extraParams);
}
// }}}
// {{{ getPageSelectBox()
/**
* Returns a string with a XHTML SELECT menu with the page numbers,
* useful as an alternative to the links
*
* @param array - 'optionText': text to show in each option.
* Use '%d' where you want to see the number of pages selected.
* - 'autoSubmit': if TRUE, add some js code to submit the
* form on the onChange event
* @param string $extraAttributes (html attributes) Tag attributes or
* HTML attributes (id="foo" pairs), will be inserted in the
* <select> tag
* @return string xhtml select box
* @access public
*/
function getPageSelectBox($params = array(), $extraAttributes = '')
{
require_once 'Pager/HtmlWidgets.php';
$widget =& new Pager_HtmlWidgets($this);
return $widget->getPageSelectBox($params, $extraAttributes);
}
// }}}
// {{{ _printFirstPage()
/**
* Print [1]
*
* @return string String with link to 1st page,
* or empty string if this is the 1st page.
* @access private
*/
function _printFirstPage()
{
if ($this->isFirstPage()) {
return '';
}
$this->_linkData[$this->_urlVar] = 1;
return $this->_renderLink(
str_replace('%d', 1, $this->_altFirst),
$this->_firstPagePre . $this->_firstPageText . $this->_firstPagePost
) . $this->_spacesBefore . $this->_spacesAfter;
}
// }}}
// {{{ _printLastPage()
/**
* Print [numPages()]
*
* @return string String with link to last page,
* or empty string if this is the 1st page.
* @access private
*/
function _printLastPage()
{
if ($this->isLastPage()) {
return '';
}
$this->_linkData[$this->_urlVar] = $this->_totalPages;
return $this->_renderLink(
str_replace('%d', $this->_totalPages, $this->_altLast),
$this->_lastPagePre . $this->_lastPageText . $this->_lastPagePost
);
}
// }}}
// {{{ _setFirstLastText()
/**
* sets the private _firstPageText, _lastPageText variables
* based on whether they were set in the options
*
* @access private
*/
function _setFirstLastText()
{
if ($this->_firstPageText == '') {
$this->_firstPageText = '1';
}
if ($this->_lastPageText == '') {
$this->_lastPageText = $this->_totalPages;
}
}
// }}}
// {{{ _http_build_query_wrapper()
/**
* This is a slightly modified version of the http_build_query() function;
* it heavily borrows code from PHP_Compat's http_build_query().
* The main change is the usage of htmlentities instead of urlencode,
* since it's too aggressive
*
* @author Stephan Schmidt <schst@php.net>
* @author Aidan Lister <aidan@php.net>
* @author Lorenzo Alberton <l dot alberton at quipo dot it>
* @param array $data
* @return string
* @access private
*/
function _http_build_query_wrapper($data)
{
$data = (array)$data;
if (empty($data)) {
return '';
}
$separator = ini_get('arg_separator.output');
if ($separator == '&') {
$separator = '&'; //the string is escaped by htmlentities anyway...
}
$tmp = array ();
foreach ($data as $key => $val) {
if (is_scalar($val)) {
//array_push($tmp, $key.'='.$val);
$val = urlencode($val);
array_push($tmp, $key .'='. str_replace('%2F', '/', $val));
continue;
}
// If the value is an array, recursively parse it
if (is_array($val)) {
array_push($tmp, $this->__http_build_query($val, htmlentities($key)));
continue;
}
}
return implode($separator, $tmp);
}
// }}}
// {{{ __http_build_query()
/**
* Helper function
* @author Stephan Schmidt <schst@php.net>
* @author Aidan Lister <aidan@php.net>
* @access private
*/
function __http_build_query($array, $name)
{
$tmp = array ();
$separator = ini_get('arg_separator.output');
if ($separator == '&') {
$separator = '&'; //the string is escaped by htmlentities anyway...
}
foreach ($array as $key => $value) {
if (is_array($value)) {
//array_push($tmp, $this->__http_build_query($value, sprintf('%s[%s]', $name, $key)));
array_push($tmp, $this->__http_build_query($value, $name.'%5B'.$key.'%5D'));
} elseif (is_scalar($value)) {
//array_push($tmp, sprintf('%s[%s]=%s', $name, htmlentities($key), htmlentities($value)));
array_push($tmp, $name.'%5B'.htmlentities($key).'%5D='.htmlentities($value));
} elseif (is_object($value)) {
//array_push($tmp, $this->__http_build_query(get_object_vars($value), sprintf('%s[%s]', $name, $key)));
array_push($tmp, $this->__http_build_query(get_object_vars($value), $name.'%5B'.$key.'%5D'));
}
}
return implode($separator, $tmp);
}
// }}}
// {{{ _isEncoded()
/**
* Helper function
* Check if a string is an encoded multibyte string
* @param string $string
* @return boolean
* @access private
*/
function _isEncoded($string)
{
$hexchar = '&#[\dA-Fx]{2,};';
return preg_match("/^(\s|($hexchar))*$/Uims", $string) ? true : false;
}
// }}}
// {{{ raiseError()
/**
* conditionally includes PEAR base class and raise an error
*
* @param string $msg Error message
* @param int $code Error code
* @access private
*/
function raiseError($msg, $code)
{
include_once 'PEAR.php';
if (empty($this->_pearErrorMode)) {
$this->_pearErrorMode = PEAR_ERROR_RETURN;
}
return PEAR::raiseError($msg, $code, $this->_pearErrorMode);
}
// }}}
// {{{ setOptions()
/**
* Set and sanitize options
*
* @param mixed $options An associative array of option names and
* their values.
* @return integer error code (PAGER_OK on success)
* @access public
*/
function setOptions($options)
{
foreach ($options as $key => $value) {
if (in_array($key, $this->_allowed_options) && (!is_null($value))) {
$this->{'_' . $key} = $value;
}
}
//autodetect http method
if (!isset($options['httpMethod'])
&& !isset($_GET[$this->_urlVar])
&& isset($_POST[$this->_urlVar])
) {
$this->_httpMethod = 'POST';
} else {
$this->_httpMethod = strtoupper($this->_httpMethod);
}
$this->_fileName = ltrim($this->_fileName, '/'); //strip leading slash
$this->_path = rtrim($this->_path, '/'); //strip trailing slash
if ($this->_append) {
if ($this->_fixFileName) {
$this->_fileName = CURRENT_FILENAME; //avoid possible user error;
}
$this->_url = $this->_path.'/'.$this->_fileName;
} else {
$this->_url = $this->_path;
if (strncasecmp($this->_fileName, 'javascript', 10) != 0) {
$this->_url .= '/';
}
if (!strstr($this->_fileName, '%d')) {
trigger_error($this->errorMessage(ERROR_PAGER_INVALID_USAGE), E_USER_WARNING);
}
}
$this->_classString = '';
if (strlen($this->_linkClass)) {
$this->_classString = 'class="'.$this->_linkClass.'"';
}
if (strlen($this->_curPageLinkClassName)) {
$this->_curPageSpanPre = '_curPageLinkClassName.'">';
$this->_curPageSpanPost = '';
}
$this->_perPage = max($this->_perPage, 1); //avoid possible user errors
if ($this->_useSessions && !isset($_SESSION)) {
session_start();
}
if (!empty($_REQUEST[$this->_sessionVar])) {
$this->_perPage = max(1, (int)$_REQUEST[$this->_sessionVar]);
if ($this->_useSessions) {
$_SESSION[$this->_sessionVar] = $this->_perPage;
}
}
if (!empty($_SESSION[$this->_sessionVar])) {
$this->_perPage = $_SESSION[$this->_sessionVar];
}
if ($this->_closeSession) {
session_write_close();
}
$this->_spacesBefore = str_repeat(' ', $this->_spacesBeforeSeparator);
$this->_spacesAfter = str_repeat(' ', $this->_spacesAfterSeparator);
if (isset($_REQUEST[$this->_urlVar]) && empty($options['currentPage'])) {
$this->_currentPage = (int)$_REQUEST[$this->_urlVar];
}
$this->_currentPage = max($this->_currentPage, 1);
$this->_linkData = $this->_getLinksData();
return PAGER_OK;
}
// }}}
// {{{ getOption()
/**
* Return the current value of a given option
*
* @param string option name
* @return mixed option value
*/
function getOption($name)
{
if (!in_array($name, $this->_allowed_options)) {
$msg = 'PEAR::Pager Error:'
.' invalid option: '.$name;
return $this->raiseError($msg, ERROR_PAGER_INVALID);
}
return $this->{'_' . $name};
}
// }}}
// {{{ getOptions()
/**
* Return an array with all the current pager options
*
* @return array list of all the pager options
*/
function getOptions()
{
$options = array();
foreach ($this->_allowed_options as $option) {
$options[$option] = $this->{'_' . $option};
}
return $options;
}
// }}}
// {{{ errorMessage()
/**
* Return a textual error message for a PAGER error code
*
* @param int $code error code
* @return string error message
* @access public
*/
function errorMessage($code)
{
static $errorMessages;
if (!isset($errorMessages)) {
$errorMessages = array(
ERROR_PAGER => 'unknown error',
ERROR_PAGER_INVALID => 'invalid',
ERROR_PAGER_INVALID_PLACEHOLDER => 'invalid format - use "%d" as placeholder.',
ERROR_PAGER_INVALID_USAGE => 'if $options[\'append\'] is set to false, '
.' $options[\'fileName\'] MUST contain the "%d" placeholder.',
ERROR_PAGER_NOT_IMPLEMENTED => 'not implemented'
);
}
return 'PEAR::Pager error: '. (isset($errorMessages[$code]) ?
$errorMessages[$code] : $errorMessages[ERROR_PAGER]);
}
// }}}
}
?>

Source for file Common.php