class.ilAssQuestionHintPageObjectCommandForwarder.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionAbstractPageObjectCommandForwarder.php';
require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionHintsGUI.php';

class ilAssQuestionHintPageObjectCommandForwarder extends ilAssQuestionAbstractPageObjectCommandForwarder
{
        const PRESENTATION_MODE_AUTHOR = 'PRESENTATION_MODE_AUTHOR';
        
        const PRESENTATION_MODE_PREVIEW = 'PRESENTATION_MODE_PREVIEW';
        
        const PRESENTATION_MODE_REQUEST = 'PRESENTATION_MODE_REQUEST';
        
        protected $presentationMode = null;
        
        protected $questionHint = null;
        
        public function __construct(assQuestion $questionOBJ, ilCtrl $ctrl, ilTabsGUI $tabs, ilLanguage $lng)
        {
                parent::__construct($questionOBJ, $ctrl, $tabs, $lng);
                
                $this->questionHint = new ilAssQuestionHint();

                if( !isset($_GET['hint_id']) || !(int)$_GET['hint_id'] || !$this->questionHint->load((int)$_GET['hint_id']) )
                {
                        ilUtil::sendFailure('invalid hint id given: '.(int)$_GET['hint_id'], true);
                        $this->ctrl->redirectByClass('ilAssQuestionHintsGUI', ilAssQuestionHintsGUI::CMD_SHOW_LIST);
                }
        }
        
        public function forward()
        {
                switch( $this->getPresentationMode() )
                {
                        case self::PRESENTATION_MODE_AUTHOR:
                                
                                $pageObjectGUI = $this->buildAuthorPresentationPageObjectGUI();
                                break;
                        
                        case self::PRESENTATION_MODE_PREVIEW:
                                
                                $pageObjectGUI = $this->buildPreviewPresentationPageObjectGUI();
                                break;
                        
                        case self::PRESENTATION_MODE_REQUEST:
                                
                                $pageObjectGUI = $this->buildRequestPresentationPageObjectGUI();
                                break;
                }

                $this->ctrl->setParameter($pageObjectGUI, 'hint_id', $this->questionHint->getId());
                
                $this->ctrl->forwardCommand($pageObjectGUI);
        }
        
        private function buildPreviewPresentationPageObjectGUI()
        {
                $this->tabs->setBackTarget(
                        $this->lng->txt('tst_question_hints_back_to_hint_list'),
                        $this->ctrl->getLinkTargetByClass('ilAssQuestionHintsGUI', ilAssQuestionHintsGUI::CMD_SHOW_LIST)
                );
                
                $pageObjectGUI = $this->getPageObjectGUI(
                        $this->questionHint->getPageObjectType(), $this->questionHint->getId()
                );
                
                $pageObjectGUI->setEnabledTabs(false);
                
                $pageObjectGUI->setPresentationTitle(
                        ilAssQuestionHint::getHintIndexLabel($this->lng, $this->questionHint->getIndex())
                );
                
                return $pageObjectGUI;
        }

        private function buildRequestPresentationPageObjectGUI()
        {
                $this->tabs->setBackTarget(
                        $this->lng->txt('tst_question_hints_back_to_hint_list'),
                        $this->ctrl->getLinkTargetByClass('ilAssQuestionHintRequestGUI', ilAssQuestionHintRequestGUI::CMD_SHOW_LIST)
                );
                
                $pageObjectGUI = $this->getPageObjectGUI(
                                $this->questionHint->getPageObjectType(), $this->questionHint->getId()
                );
                
                $pageObjectGUI->setEnabledTabs(false);
                
                $pageObjectGUI->setPresentationTitle(
                                ilAssQuestionHint::getHintIndexLabel($this->lng, $this->questionHint->getIndex())
                );
                
                return $pageObjectGUI;
        }
        
        private function buildAuthorPresentationPageObjectGUI()
        {
                $this->tabs->setBackTarget(
                        $this->lng->txt('tst_question_hints_back_to_hint_list'),
                        $this->ctrl->getLinkTargetByClass('ilAssQuestionHintsGUI', ilAssQuestionHintsGUI::CMD_SHOW_LIST)
                );
                
                $this->ensurePageObjectExists(
                                $this->questionHint->getPageObjectType(), $this->questionHint->getId()
                );
                
                $pageObjectGUI = $this->getPageObjectGUI(
                                $this->questionHint->getPageObjectType(), $this->questionHint->getId()
                );
                
                $pageObjectGUI->setEnabledTabs(true);
                
                return $pageObjectGUI;
        }
        
        public function getPresentationMode()
        {
                return $this->presentationMode;
        }
        
        public function setPresentationMode($presentationMode)
        {
                switch( $presentationMode )
                {
                        case self::PRESENTATION_MODE_AUTHOR:
                        case self::PRESENTATION_MODE_PREVIEW:
                        case self::PRESENTATION_MODE_REQUEST:
                                
                                $this->presentationMode = $presentationMode;
                                break;
                        
                        default: throw new ilTestQuestionPoolException('invalid presentation mode given: '.$presentationMode);
                }
        }
        
        protected function getPageObjectGUI($pageObjectType, $pageObjectId)
        {
                include_once("./Modules/TestQuestionPool/classes/class.ilAssHintPageGUI.php");
                $pageObjectGUI = new ilAssHintPageGUI($pageObjectId);
                $pageObjectGUI->obj->addUpdateListener(
                        $this->questionOBJ,
                        'updateTimestamp'
                );
                return $pageObjectGUI;
        }
        
        protected function ensurePageObjectExists($pageObjectType, $pageObjectId)
        {
                include_once("./Modules/TestQuestionPool/classes/class.ilAssHintPage.php");
                if( !ilAssHintPage::_exists($pageObjectType, $pageObjectId) )
                {
                        $pageObject = new ilAssHintPage();
                        $pageObject->setParentId($this->questionOBJ->getId());
                        $pageObject->setId($pageObjectId);
                        $pageObject->createFromXML();
                }
        }

}