class.ilCommonActionDispatcherGUI.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilCommonActionDispatcherGUI
{       
        protected $obj_type; // [string]
        protected $node_id; // [int]
        protected $node_type; // [string]
        protected $obj_id; // [int]
        protected $sub_type; // [string]
        protected $sub_id; // [int]     
        protected $enable_comments_settings; // [bool]
        protected $rating_callback; // [array]
        
        const TYPE_REPOSITORY = 1;
        const TYPE_WORKSPACE = 2;
        
        function __construct($a_node_type, $a_access_handler, $a_obj_type, $a_node_id, $a_obj_id)
        {                                                               
                $this->node_type = (int)$a_node_type;
                $this->access_handler = $a_access_handler;
                $this->obj_type = (string)$a_obj_type;
                $this->node_id = (int)$a_node_id;
                $this->obj_id = (int)$a_obj_id;         
        }
        
        function getAjaxHash()
        {
                return self::buildAjaxHash($this->node_type, $this->node_id, $this->obj_type,
                        $this->obj_id, $this->sub_type, $this->sub_id);
        }
        
        static function buildAjaxHash($a_node_type, $a_node_id, $a_obj_type, $a_obj_id, $a_sub_type = null, $a_sub_id = null)
        {
                return $a_node_type.";".$a_node_id.";".$a_obj_type.";".
                        $a_obj_id.";".$a_sub_type.";".$a_sub_id;
        }
        
        static function getInstanceFromAjaxCall()
        {
                global $ilAccess, $ilUser;
                
                if(isset($_GET["cadh"]))
                {
                        $parts = explode(";", (string)$_GET["cadh"]);
                        
                        $node_type = $parts[0];
                        $node_id = $parts[1];
                        $obj_type = $parts[2];
                        $obj_id = $parts[3];
                        $sub_type = $parts[4];
                        $sub_id = $parts[5];
                        
                        switch($node_type)
                        {
                                case self::TYPE_REPOSITORY:
                                        $access_handler = $ilAccess;
                                        break;
                                
                                case self::TYPE_WORKSPACE:
                                        include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceTree.php";
                                        $tree = new ilWorkspaceTree($ilUser->getId());
                                        include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceAccessHandler.php";
                                        $access_handler = new ilWorkspaceAccessHandler($tree);
                                        break;
                                
                                default:
                                        return null;
                        }
                        
                        $dispatcher = new self($node_type, $access_handler, $obj_type, $node_id, $obj_id);
                        
                        if($sub_type && $sub_id)
                        {
                                $dispatcher->setSubObject($sub_type, $sub_id);
                        }

            // poll comments have specific settings

                        if($node_type == self::TYPE_REPOSITORY && $obj_type != "poll")
                        {                                                               
                                $dispatcher->enableCommentsSettings(true);      
                        }
                        
                        return $dispatcher;
                }               
        }
                
        function executeCommand()
        {
                global $ilCtrl, $ilSetting;

                // check access for object 
                if ($this->node_id && 
                        !$this->access_handler->checkAccess("visible", "", $this->node_id) &&
                        !$this->access_handler->checkAccess("read", "", $this->node_id))
                {
                        exit();
                }
                
                $next_class = $ilCtrl->getNextClass($this);
                $cmd = $ilCtrl->getCmd();
                
                $ilCtrl->saveParameter($this, "cadh");
                
                switch($next_class)
                {
                        case "ilnotegui":
                                
                                $obj_type = $this->obj_type;
                                if($this->sub_type)
                                {
                                        $obj_type = $this->sub_type;
                                }
                                
                                include_once "Services/Notes/classes/class.ilNoteGUI.php";
                                $note_gui = new ilNoteGUI($this->obj_id, $this->sub_id, $obj_type);
                                $note_gui->enablePrivateNotes(true);    
                                
                                $has_write = $this->access_handler->checkAccess("write", "", $this->node_id);
                                if($has_write && $ilSetting->get("comments_del_tutor", 1))
                                {
                                        $note_gui->enablePublicNotesDeletion(true);
                                }
                                
                                // comments cannot be turned off globally
                                if($this->enable_comments_settings)
                                {
                                        // should only be shown if active or permission to toggle
                                        if($has_write ||
                                                $this->access_handler->checkAccess("edit_permissions", "", $this->node_id))
                                        {
                                                $note_gui->enableCommentsSettings();
                                        }
                                }
                                /* this is different to the info screen but we need this
                                   for sub-object action menus, e.g. wiki page */
                                else if($this->sub_id)
                                {
                                        $note_gui->enablePublicNotes(true);
                                }                                                                                                

                                $ilCtrl->forwardCommand($note_gui);             
                                break;

                        case "iltagginggui":                                                    
                                include_once "Services/Tagging/classes/class.ilTaggingGUI.php";
                                $tags_gui = new ilTaggingGUI($this->node_id);                                                                           
                                $tags_gui->setObject($this->obj_id, $this->obj_type);
                                $ilCtrl->forwardCommand($tags_gui);                                             
                                break;
                        
                        case "ilobjectactivationgui":
                                $ilCtrl->setParameter($this, "parent_id", (int)$_REQUEST['parent_id']);
                                include_once 'Services/Object/classes/class.ilObjectActivationGUI.php';                         
                                $act_gui = new ilObjectActivationGUI((int)$_REQUEST['parent_id'],$this->node_id);
                                $ilCtrl->forwardCommand($act_gui);
                                break;  
                        
                        case "ilratinggui":
                                include_once("./Services/Rating/classes/class.ilRatingGUI.php");
                                $rating_gui = new ilRatingGUI();                
                                if(!$_GET["rnsb"])
                                {
                                        $rating_gui->setObject($this->obj_id, $this->obj_type, $this->sub_id, $this->sub_type);
                                }
                                else
                                {
                                        // coming from headaction ignore sub-objects
                                        $rating_gui->setObject($this->obj_id, $this->obj_type);
                                }
                                $ilCtrl->forwardCommand($rating_gui);
                                if($this->rating_callback)
                                {
                                        // as rating in categories is form-based we need to redirect
                                        // somewhere after saving
                                        $ilCtrl->redirect($this->rating_callback[0], $this->rating_callback[1]);
                                }
                                break;
                        
                        default:                                
                                break;
                }
                
                exit();
        }
        
        function setSubObject($a_sub_obj_type, $a_sub_obj_id)
        {
                $this->sub_type = (string)$a_sub_obj_type;
                $this->sub_id = (int)$a_sub_obj_id;                     
        }
        
        function enableCommentsSettings($a_value)
        {
                $this->enable_comments_settings = (bool)$a_value;
        }
        
        function setRatingCallback($a_gui, $a_cmd)
        {
                $this->rating_callback = array($a_gui, $a_cmd);
        }
        
        function initHeaderAction()
        {
                // check access for object 
                if ($this->node_id && 
                        !$this->access_handler->checkAccess("visible", "", $this->node_id) &&
                        !$this->access_handler->checkAccess("read", "", $this->node_id))
                {
                        return;
                }
                
                include_once 'Services/Object/classes/class.ilObjectListGUIFactory.php';
                $this->header_action = ilObjectListGUIFactory::_getListGUIByType(
                        $this->obj_type,
                        ($this->node_type == self::TYPE_REPOSITORY)
                                ? ilObjectListGUI::CONTEXT_REPOSITORY
                                : ilObjectListGUI::CONTEXT_WORKSPACE
                );
                
                // remove all currently unwanted actions
                $this->header_action->enableCopy(false);
                $this->header_action->enableCut(false);
                $this->header_action->enableDelete(false);
                $this->header_action->enableLink(false);
                $this->header_action->enableInfoscreen(false);                          
                $this->header_action->enableTimings(false);
                $this->header_action->enableSubscribe($this->node_type == self::TYPE_REPOSITORY);
                
                $this->header_action->initItem($this->node_id, $this->obj_id);                          
                $this->header_action->setHeaderSubObject($this->sub_type, $this->sub_id);               
                $this->header_action->setAjaxHash($this->getAjaxHash());
                
                return $this->header_action;
        }
}

?>