Source for file delete.act.php

<?php
 
/**
 * group_membership.act.php
 * This action will allow for the creation/deletion of groups
 * 11/29/04 Ryan Richards, some code from Adam Franco
 *
 * @package polyphony.agents
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: delete.act.php,v 1.4 2007/09/19 14:04:52 adamfranco Exp $
 */
 
require_once(HARMONI."/GUIManager/Layouts/YLayout.class.php");
require_once(HARMONI."/GUIManager/Components/Heading.class.php");
 
require_once(POLYPHONY."/main/library/AbstractActions/MainWindowAction.class.php");
 
 
/**
 * This action will allow for the modification of group Membership.
 *
 * @since 11/10/04
 * 
 * @package polyphony.agents
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: delete.act.php,v 1.4 2007/09/19 14:04:52 adamfranco Exp $
 */
class deleteAction 
    extends MainWindowAction
{
    /**
     * Check Authorizations
     * 
     * @return boolean 
     * @access public
     * @since 4/26/05
     */
    function isAuthorizedToExecute () {
        // Check for authorization
         $authZManager = Services::getService("AuthZ");
         $idManager = Services::getService("IdManager");
         return $authZManager->isUserAuthorized(
                     $idManager->getId("edu.middlebury.authorization.delete_agent"),
                     $idManager->getId("edu.middlebury.authorization.root"));
    }
 
    /**
     * Return the heading text for this action, or an empty string.
     * 
     * @return string 
     * @access public
     * @since 4/26/05
     */
    function getHeadingText () {
        return dgettext("polyphony", "Delete Agent(s)");
    }
 
    /**
     * Build the content for this action
     * 
     * @return void 
     * @access public
     * @since 4/26/05
     */
    function buildContent () {      
        $harmoni = Harmoni::instance();
//        $harmoni->request->startNamespace("polyphony-agents");
                                   
        // Our                       
        $actionRows =$this->getActionRows();
                                   
        $agentManager = Services::getService("Agent");
 
        // pass our search variables through to new URLs
        $harmoni->request->passthrough("agents");
 
        if (!$harmoni->request->get("agents")) $harmoni->history->goBack("polyphony/agents/delete");
        $agents = unserialize($harmoni->request->get("agents"));
        
        if (count($agents) == 0) $harmoni->history->goBack("polyphony/agents/delete");
        
        // now, if we have a confirm, go ahead and delete the agents and get back to where we came from
        if ($harmoni->request->get("confirm")) {
            $agentManager = Services::getService("Agent");
            $tokenManager = Services::getService("AgentTokenMapping");
            $authNMethods = Services::getService("AuthNMethodManager");
            $idManager = Services::getService("Id");
            foreach ($agents as $idString) {
                print "deleting agent $idString... <br/>";
                $id =$idManager->getId($idString);
                $mappings =$tokenManager->getMappingsForAgentId($id);
                while($mappings->hasNext()) {
                    $mapping =$mappings->next();
                    print "handling mapping ... <br/>";
                    $tokens =$mapping->getTokens();
                    $authNTypes =$authNMethods->getAuthNTypes();
                    while($authNTypes->hasNext()) {
                        $authNType =$authNTypes->next();
                        print "checking type: " . Type::typeToString($authNType) . "<br/>";
                        $authNMethod =$authNMethods->getAuthNMethodForType($authNType);
                        if ($authNMethod->supportsTokenDeletion() && $authNMethod->tokensExist($tokens)) {
                            print "deleting tokens ... <br/>";
                            $authNMethod->deleteTokens($tokens);
                        }
                    }
                    $tokenManager->deleteMapping($mapping);
                }
                $agentManager->deleteAgent($id);
            }
            
            // and done
            $harmoni->history->goBack("polyphony/agents/delete");
            exit(0);
        }
 
        ob_start();
        $confirmUrl =$harmoni->request->mkURL();
        $confirmUrl->setValue("confirm","1");
        if (count($agents) == 1) {
            $string = _("Are you sure you wish to delete the agent selected?");
        } else {
            $string = sprintf(_("Are you sure you wish to delete the %s agents selected?"), count($agents));
        }
        print $string;
 
        print "\n<div align='right'><a href='".$harmoni->history->getReturnURL("polyphony/agents/delete")."'>&lt;&lt; "._("Go Back")."</a>\n<a href='".$confirmUrl->write()."'>Confirm &gt;&gt;</a></div>\n";
 
        $actionRows->add(new Block(ob_get_contents(), 4));
        ob_end_clean();
 
 
//        $harmoni->request->endNamespace();
 
        /*********************************************************
         * Return the main layout.
         *********************************************************/
        return $actionRows;
    }
 
 
}