class.ilCommonActionDispatcherGUI.php

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

class ilCommonActionDispatcherGUI
{
    protected $ctrl;

    protected $settings;

    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 $news_id = 0;

    protected $enable_comments_settings; // [bool]
    protected $rating_callback; // [array]
    
    const TYPE_REPOSITORY = 1;
    const TYPE_WORKSPACE = 2;
    
    public function __construct($a_node_type, $a_access_handler, $a_obj_type, $a_node_id, $a_obj_id, $a_news_id = 0)
    {
        global $DIC;

        $this->ctrl = $DIC->ctrl();
        $this->settings = $DIC->settings();
        $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;
        $this->news_id = (int) $a_news_id;
    }
    
    public function getAjaxHash()
    {
        return self::buildAjaxHash(
            $this->node_type,
            $this->node_id,
            $this->obj_type,
            $this->obj_id,
            $this->sub_type,
            $this->sub_id,
            $this->news_id
        );
    }
    
    public static function buildAjaxHash(
        $a_node_type,
        $a_node_id,
        $a_obj_type,
        $a_obj_id,
        $a_sub_type = null,
        $a_sub_id = null,
        $a_news_id = 0
    ) {
        return $a_node_type . ";" . $a_node_id . ";" . $a_obj_type . ";" .
            $a_obj_id . ";" . $a_sub_type . ";" . $a_sub_id . ";" . $a_news_id;
    }
    
    public static function getInstanceFromAjaxCall()
    {
        global $DIC;

        $ilAccess = $DIC->access();
        $ilUser = $DIC->user();
        if (isset($_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];
            $news_id = $parts[6];
            
            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, $news_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;
        }
    }
        
    public function executeCommand()
    {
        $ilCtrl = $this->ctrl;
        $ilSetting = $this->settings;

        // 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, false, $this->news_id);
                $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)) {
                        $note_gui->enableCommentsSettings();
                    }
                }
                /* this is different to the info screen but we need this
                   for sub-object action menus, e.g. wiki page */
                elseif ($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();
    }
    
    public 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;
    }
    
    public function enableCommentsSettings($a_value)
    {
        $this->enable_comments_settings = (bool) $a_value;
    }
    
    public function setRatingCallback($a_gui, $a_cmd)
    {
        $this->rating_callback = array($a_gui, $a_cmd);
    }
    
    public 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;
    }
}