SiteMap.inc
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<?php
/**
* $Id$
*
* Maintains page-level access map, as well as section, page map.
*
* @version $Revision$
* @author michael@jamwarehouse.com
* @package dms
*/
class SiteMap {
/**
* The underlying site map storage array
*/
var $siteMapArray;
/**
* Constructs a new SiteMap, initialising the array.
*/
function SiteMap() {
$this->siteMapArray = array();
}
/**
* Adds a site page mapping entry.
*
* @param $action
* the controller action
* @param $page
* the corresponding page for this action
* @param $sectionName
* the section this page falls under
* @param $userClass
* the user class with access to this page
*/
function addPage($action, $page, $sectionName, $userClass) {
// add to map
$this->siteMapArray[$sectionName][$userClass][$action] = $page;
}
/**
* Returns the page mapped to the action, userClass pair.
*
* @param $action
* the action to lookup pages for
* @param $userClass
* the userclass to perform page level validation against
* @return
* the page to redirect to, or false if the user class doesn't
* have access to the page
*/
function getPage($action, $userClass) {
// map incoming userClass to number
$uc = constant($userClass);
// iterate through multidim sitemap array
foreach ($this->siteMapArray as $section => $valArr) {
foreach ($valArr as $userAccess => $pageArr) {
if ($uc <= constant($userAccess)) {
// now loop through pages until we find the right one
foreach ($pageArr as $ackshin => $page) {
if ($ackshin == $action) {
return $page;
}
}
}
}
}
// if the function hasn't returned already then the specified
// userClass does not have access to the action
return false;
}
/**
* Returns the pages in the specified section accessible to the
* specified userClass.
*
* @param $sectionName
* the section to retrieve pages for
* @param $userClass
* the user class to return pages for
* @return
* an array containing the actions for the specified section
*/
function getSection($sectionName, $userClass) {
// check if the section exists
if (is_array($this->siteMapArray[$sectionName])) {
// initialise result array
$results = array();
// need to loop through all user class arrays in this section
foreach ($this->siteMapArray[$sectionName] as $uc => $pages) {
if (constant($userClass) <= constant($uc)) {
// add this array to the resultset array
$results = array_merge($results, $this->siteMapArray[$sectionName][$uc]);
}
}
// now check if we have anything in the results array before returning it
if (count($results) > 0) {
return $results;
} else {
return false;
}
} else {
// supplied section not in sitemap
// TODO: internal error code?
return false;
}
}
/**
* Prints the current site map
*/
function printMap() {
print_r($this->siteMapArray);
}
}
?>