class.assNumericGUI.php

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

require_once './Modules/TestQuestionPool/classes/class.assQuestionGUI.php';
require_once './Modules/TestQuestionPool/interfaces/interface.ilGuiQuestionScoringAdjustable.php';
require_once './Modules/TestQuestionPool/interfaces/interface.ilGuiAnswerScoringAdjustable.php';
require_once './Modules/Test/classes/inc.AssessmentConstants.php';

class assNumericGUI extends assQuestionGUI implements ilGuiQuestionScoringAdjustable, ilGuiAnswerScoringAdjustable
{
        public function __construct($id = -1)
        {
                parent::__construct();
                require_once './Modules/TestQuestionPool/classes/class.assNumeric.php';
                $this->object = new assNumeric();
                if ($id >= 0)
                {
                        $this->object->loadFromDb($id);
                }
        }

        function getCommand($cmd)
        {
                if (substr($cmd, 0, 6) == "delete")
                {
                        $cmd = "delete";
                }
                return $cmd;
        }

        public function writePostData($always = false)
        {
                $hasErrors = (!$always) ? $this->editQuestion(true) : false;
                if (!$hasErrors)
                {
                        require_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
                        $this->writeQuestionGenericPostData();
                        $this->writeQuestionSpecificPostData(new ilPropertyFormGUI());
                        $this->writeAnswerSpecificPostData(new ilPropertyFormGUI());
                        $this->saveTaxonomyAssignments();
                        return 0;
                }
                return 1;
        }

        public function editQuestion($checkonly = FALSE)
        {
                $save = $this->isSaveCommand();
                $this->getQuestionTemplate();

                include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
                $form = new ilPropertyFormGUI();
                $form->setFormAction($this->ctrl->getFormAction($this));
                $form->setTitle($this->outQuestionType());
                $form->setMultipart(TRUE);
                $form->setTableWidth("100%");
                $form->setId("assnumeric");

                $this->addBasicQuestionFormProperties( $form );
                $this->populateQuestionSpecificFormPart( $form );
                $this->populateAnswerSpecificFormPart( $form );
                $this->populateTaxonomyFormSection($form);
                $this->addQuestionFormCommandButtons($form);

                $errors = false;
        
                if ($save)
                {
                        $form->setValuesByPost();
                        $errors = !$form->checkInput();
                        $form->setValuesByPost(); // again, because checkInput now performs the whole stripSlashes handling and we need this if we don't want to have duplication of backslashes
                        if ($errors) $checkonly = false;
                }

                if (!$checkonly) $this->tpl->setVariable("QUESTION_DATA", $form->getHTML());
                return $errors;
        }

        public function checkRange()
        {
                include_once "./Services/Math/classes/class.EvalMath.php";
                $eval = new EvalMath();
                $eval->suppress_errors = TRUE;
                if (($eval->e($_POST["rang_lower_limit"]) !== FALSE) AND ($eval->e($_POST ["range_upper_limit"]) !== FALSE))
                {
                        if ($eval->e($_POST["rang_lower_limit"]) < $eval->e($_POST["range_upper_limit"]))
                        {
                                return TRUE;
                        }
                        else 
                        {
                                return FALSE;
                        }
                }
                return FALSE;
        }

        function getSolutionOutput(
                $active_id,
                $pass = NULL,
                $graphicalOutput = FALSE,
                $result_output = FALSE,
                $show_question_only = TRUE,
                $show_feedback = FALSE,
                $show_correct_solution = FALSE,
                $show_manual_scoring = FALSE,
                $show_question_text = TRUE
        )
        {
                // get the solution of the user for the active pass or from the last pass if allowed
                $solutions = array();
                if (($active_id > 0) && (!$show_correct_solution))
                {
                        $solutions =& $this->object->getSolutionValues($active_id, $pass);
                }
                else
                {
                        array_push($solutions, array("value1" => sprintf($this->lng->txt("value_between_x_and_y"), $this->object->getLowerLimit(), $this->object->getUpperLimit())));
                }
                
                // generate the question output
                require_once './Services/UICore/classes/class.ilTemplate.php';
                $template = new ilTemplate("tpl.il_as_qpl_numeric_output_solution.html", TRUE, TRUE, "Modules/TestQuestionPool");
                $solutiontemplate = new ilTemplate("tpl.il_as_tst_solution_output.html",TRUE, TRUE, "Modules/TestQuestionPool");
                if (is_array($solutions))
                {
                        if (($active_id > 0) && (!$show_correct_solution))
                        {
                                if ($graphicalOutput)
                                {
                                        if($this->object->getStep() === NULL)
                                        {
                                                $reached_points = $this->object->getReachedPoints($active_id, $pass);
                                        }
                                        else
                                        {
                                                $reached_points = $this->object->calculateReachedPoints($active_id, $pass);
                                        }
                                        // output of ok/not ok icons for user entered solutions
                                        if ($reached_points == $this->object->getMaximumPoints())
                                        {
                                                $template->setCurrentBlock("icon_ok");
                                                $template->setVariable("ICON_OK", ilUtil::getImagePath("icon_ok.svg"));
                                                $template->setVariable("TEXT_OK", $this->lng->txt("answer_is_right"));
                                                $template->parseCurrentBlock();
                                        }
                                        else
                                        {
                                                $template->setCurrentBlock("icon_ok");
                                                $template->setVariable("ICON_NOT_OK", ilUtil::getImagePath("icon_not_ok.svg"));
                                                $template->setVariable("TEXT_NOT_OK", $this->lng->txt("answer_is_wrong"));
                                                $template->parseCurrentBlock();
                                        }
                                }
                        }
                        foreach ($solutions as $solution)
                        {
                                $template->setVariable("NUMERIC_VALUE", $solution["value1"]);
                        }
                        if (count($solutions) == 0)
                        {
                                $template->setVariable("NUMERIC_VALUE", "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;");
                        }
                }
                $template->setVariable("NUMERIC_SIZE", $this->object->getMaxChars());
                $questiontext = $this->object->getQuestion();
                if ($show_question_text==true)
                {
                        $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                }
                $questionoutput = $template->get();
                //$feedback = ($show_feedback) ? $this->getAnswerFeedbackOutput($active_id, $pass) : ""; // Moving new method 
                                                                                                                                                                                                 // due to deprecation.
                $feedback = ($show_feedback && !$this->isTestPresentationContext()) ? $this->getGenericFeedbackOutput($active_id, $pass) : "";
                if (strlen($feedback))
                {
                        $cssClass = ( $this->hasCorrectSolution($active_id, $pass) ?
                                ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_CORRECT : ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_WRONG
                        );
                        
                        $solutiontemplate->setVariable("ILC_FB_CSS_CLASS", $cssClass);
                        $solutiontemplate->setVariable("FEEDBACK", $this->object->prepareTextareaOutput( $feedback, true ));
                }
                $solutiontemplate->setVariable("SOLUTION_OUTPUT", $questionoutput);

                $solutionoutput = $solutiontemplate->get(); 
                if (!$show_question_only)
                {
                        // get page object output
                        $solutionoutput = $this->getILIASPage($solutionoutput);
                }
                return $solutionoutput;
        }

        public function getPreview($show_question_only = FALSE, $showInlineFeedback = false)
        {
                // generate the question output
                require_once './Services/UICore/classes/class.ilTemplate.php';
                $template = new ilTemplate("tpl.il_as_qpl_numeric_output.html", TRUE, TRUE, "Modules/TestQuestionPool");
                if( is_object($this->getPreviewSession()) )
                {
                        $template->setVariable("NUMERIC_VALUE", " value=\"".$this->getPreviewSession()->getParticipantsSolution()."\"");
                }
                $template->setVariable("NUMERIC_SIZE", $this->object->getMaxChars());
                $questiontext = $this->object->getQuestion();
                $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                $questionoutput = $template->get();
                if (!$show_question_only)
                {
                        // get page object output
                        $questionoutput = $this->getILIASPage($questionoutput);
                }
                return $questionoutput;
        }

        // hey: prevPassSolutions - pass will be always available from now on
        public function getTestOutput($active_id, $pass, $is_postponed = FALSE, $use_post_solutions = FALSE, $inlineFeedback)
        // hey.
        {
                $solutions = NULL;
                // get the solution of the user for the active pass or from the last pass if allowed
                if ($active_id)
                {
                        
                        // hey: prevPassSolutions - obsolete due to central check
                        #include_once "./Modules/Test/classes/class.ilObjTest.php";
                        #if (!ilObjTest::_getUsePreviousAnswers($active_id, true))
                        #{
                        #       if (is_null($pass)) $pass = ilObjTest::_getPass($active_id);
                        #}
                        $solutions = $this->getTestOutputSolutions($active_id, $pass);
                        // hey.
                }
                
                // generate the question output
                require_once './Services/UICore/classes/class.ilTemplate.php';
                $template = new ilTemplate("tpl.il_as_qpl_numeric_output.html", TRUE, TRUE, "Modules/TestQuestionPool");
                if (is_array($solutions))
                {
                        foreach ($solutions as $solution)
                        {
                                $template->setVariable("NUMERIC_VALUE", " value=\"".$solution["value1"]."\"");
                        }
                }
                $template->setVariable("NUMERIC_SIZE", $this->object->getMaxChars());
                $questiontext = $this->object->getQuestion();
                $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                $questionoutput = $template->get();
                $pageoutput = $this->outQuestionPage("", $is_postponed, $active_id, $questionoutput);
                return $pageoutput;
        }

        public function setQuestionTabs()
        {
                global $rbacsystem, $ilTabs;

                $ilTabs->clearTargets();
                
                $this->ctrl->setParameterByClass("ilAssQuestionPageGUI", "q_id", $_GET["q_id"]);
                include_once "./Modules/TestQuestionPool/classes/class.assQuestion.php";
                $q_type = $this->object->getQuestionType();

                if (strlen($q_type))
                {
                        $classname = $q_type . "GUI";
                        $this->ctrl->setParameterByClass(strtolower($classname), "sel_question_types", $q_type);
                        $this->ctrl->setParameterByClass(strtolower($classname), "q_id", $_GET["q_id"]);
                }

                if ($_GET["q_id"])
                {
                        if ($rbacsystem->checkAccess('write', $_GET["ref_id"]))
                        {
                                // edit page
                                $ilTabs->addTarget("edit_page",
                                        $this->ctrl->getLinkTargetByClass("ilAssQuestionPageGUI", "edit"),
                                        array("edit", "insert", "exec_pg"),
                                        "", "", $force_active);
                        }

                        $this->addTab_QuestionPreview($ilTabs);
                }

                $force_active = false;
                if ($rbacsystem->checkAccess('write', $_GET["ref_id"]))
                {
                        $url = "";
                        if ($classname) $url = $this->ctrl->getLinkTargetByClass($classname, "editQuestion");
                        // edit question properties
                        $ilTabs->addTarget("edit_question",
                                $url,
                                array("editQuestion", "save", "cancel", "saveEdit", "originalSyncForm"),
                                $classname, "", $force_active);
                }

                // add tab for question feedback within common class assQuestionGUI
                $this->addTab_QuestionFeedback($ilTabs);

                // add tab for question hint within common class assQuestionGUI
                $this->addTab_QuestionHints($ilTabs);

                // add tab for question's suggested solution within common class assQuestionGUI
                $this->addTab_SuggestedSolution($ilTabs, $classname);

                // Assessment of questions sub menu entry
                if ($_GET["q_id"])
                {
                        $ilTabs->addTarget("statistics",
                                $this->ctrl->getLinkTargetByClass($classname, "assessment"),
                                array("assessment"),
                                $classname, "");
                }

                $this->addBackTab($ilTabs);
        }

        public function getSpecificFeedbackOutput($active_id, $pass)
        {
                $output = "";
                return $this->object->prepareTextareaOutput($output, TRUE);
        }

        public function writeQuestionSpecificPostData(ilPropertyFormGUI $form)
        {
                $this->object->setMaxChars( $_POST["maxchars"] );
        }

        public function writeAnswerSpecificPostData(ilPropertyFormGUI $form)
        {
                $this->object->setLowerLimit( $_POST['lowerlimit'] );
                $this->object->setUpperLimit( $_POST['upperlimit'] );
                $this->object->setPoints( $_POST['points'] );
        }

        public function populateQuestionSpecificFormPart(\ilPropertyFormGUI $form)
        {
                // maxchars
                $maxchars = new ilNumberInputGUI($this->lng->txt( "maxchars" ), "maxchars");
                $maxchars->setInfo($this->lng->txt('qpl_maxchars_info_numeric_question'));
                $maxchars->setSize( 10 );
                $maxchars->setDecimals( 0 );
                $maxchars->setMinValue( 1 );
                $maxchars->setRequired( true );
                if ($this->object->getMaxChars() > 0)
                {
                        $maxchars->setValue($this->object->getMaxChars());
                }
                $form->addItem( $maxchars );
        }

        public function populateAnswerSpecificFormPart(\ilPropertyFormGUI $form)
        {
                // points
                $points = new ilNumberInputGUI($this->lng->txt( "points" ), "points");
                $points->allowDecimals(true);
                $points->setValue( $this->object->getPoints() > 0 ? $this->object->getPoints() : '' );
                $points->setRequired( TRUE );
                $points->setSize( 3 );
                $points->setMinValue( 0.0 );
                $points->setMinvalueShouldBeGreater( true );
                $form->addItem( $points );

                $header = new ilFormSectionHeaderGUI();
                $header->setTitle( $this->lng->txt( "range" ) );
                $form->addItem( $header );

                // lower bound
                $lower_limit = new ilFormulaInputGUI($this->lng->txt( "range_lower_limit" ), "lowerlimit");
                $lower_limit->setSize( 25 );
                $lower_limit->setMaxLength( 20 );
                $lower_limit->setRequired( true );
                $lower_limit->setValue( $this->object->getLowerLimit() );
                $form->addItem( $lower_limit );

                // upper bound
                $upper_limit = new ilFormulaInputGUI($this->lng->txt( "range_upper_limit" ), "upperlimit");
                $upper_limit->setSize( 25 );
                $upper_limit->setMaxLength( 20 );
                $upper_limit->setRequired( true );
                $upper_limit->setValue( $this->object->getUpperLimit() );
                $form->addItem( $upper_limit );

                // reset input length, if max chars are set
                if( $this->object->getMaxChars() > 0 )
                {
                        $lower_limit->setSize( $this->object->getMaxChars() );
                        $lower_limit->setMaxLength( $this->object->getMaxChars() );
                        $upper_limit->setSize( $this->object->getMaxChars() );
                        $upper_limit->setMaxLength( $this->object->getMaxChars() );
                }
        }

        public function getAfterParticipationSuppressionAnswerPostVars()
        {
                return array();
        }

        public function getAfterParticipationSuppressionQuestionPostVars()
        {
                return array();
        }

        public function getAggregatedAnswersView($relevant_answers)
        {
                return  $this->renderAggregateView(
                                        $this->aggregateAnswers( $relevant_answers ) )->get();
        }

        public function aggregateAnswers($relevant_answers_chosen)
        {
                $aggregate = array();

                        foreach ($relevant_answers_chosen as $relevant_answer)
                        {
                                if ( array_key_exists($relevant_answer['value1'], $aggregate) )
                                {
                                        $aggregate[$relevant_answer['value1']]++;
                                } 
                                else 
                                {
                                        $aggregate[$relevant_answer['value1']] = 1;
                                }
                        }
                return $aggregate;
        }

        public function renderAggregateView($aggregate)
        {
                $tpl = new ilTemplate('tpl.il_as_aggregated_answers_table.html', true, true, "Modules/TestQuestionPool");

                $tpl->setCurrentBlock('headercell');
                $tpl->setVariable('HEADER', $this->lng->txt('tst_answer_aggr_answer_header'));
                $tpl->parseCurrentBlock();
                
                $tpl->setCurrentBlock('headercell');
                $tpl->setVariable('HEADER', $this->lng->txt('tst_answer_aggr_frequency_header'));
                $tpl->parseCurrentBlock();
                
                foreach ($aggregate as $key => $value)
                {
                        $tpl->setCurrentBlock( 'aggregaterow' );
                        $tpl->setVariable( 'OPTION', $key );
                        $tpl->setVariable( 'COUNT', $value );
                        $tpl->parseCurrentBlock();
                }
                return $tpl;
        }
}