add Vips as CorePlugin, re #4258

Merge request studip/studip!3432

app/controllers/vips/admin.php

+<?php
+/**
+ * vips/admin.php - course administration controller
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * @author      Elmar Ludwig
+ * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
+ */
+
+class Vips_AdminController extends AuthenticatedController
+{
+    /**
+     * Edit or create a block in the course.
+     */
+    public function edit_block_action()
+    {
+        Navigation::activateItem('/course/vips/sheets');
+        PageLayout::setHelpKeyword('Basis.Vips');
+
+        $block_id = Request::int('block_id');
+
+        if ($block_id) {
+            $block = VipsBlock::find($block_id);
+        } else {
+            $block = new VipsBlock();
+            $block->range_id = Context::getId();
+        }
+
+        VipsModule::requireStatus('tutor', $block->range_id);
+
+        $this->block = $block;
+        $this->groups = Statusgruppen::findBySeminar_id($block->range_id);
+    }
+
+    /**
+     * Store changes to a block.
+     */
+    public function store_block_action()
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $block_id = Request::int('block_id');
+        $group_id = Request::option('group_id');
+
+        if ($block_id) {
+            $block = VipsBlock::find($block_id);
+        } else {
+            $block = new VipsBlock();
+            $block->range_id = Context::getId();
+        }
+
+        VipsModule::requireStatus('tutor', $block->range_id);
+
+        $block->name = Request::get('block_name');
+        $block->group_id = $group_id ?: null;
+        $block->visible = $group_id !== '';
+
+        if (!Request::int('block_grouped')) {
+            $block->weight = null;
+        } else if ($block->weight === null) {
+            $block->weight = 0;
+
+            if ($block_id) {
+                // sum up individual assignment weights for total block weight
+                foreach (VipsAssignment::findByBlock_id($block_id) as $assignment) {
+                    $block->weight += $assignment->weight;
+                }
+            }
+        }
+
+        $block->store();
+
+        PageLayout::postSuccess(sprintf(_('Der Block „%s“ wurde gespeichert.'), htmlReady($block->name)));
+
+        $this->redirect($this->url_for('vips/sheets', ['group' => 1]));
+    }
+
+    /**
+     * Delete a block from the course.
+     */
+    public function delete_block_action()
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $block_id = Request::int('block_id');
+        $block = VipsBlock::find($block_id);
+        $block_name = $block->name;
+
+        VipsModule::requireStatus('tutor', $block->range_id);
+
+        if ($block->delete()) {
+            PageLayout::postSuccess(sprintf(_('Der Block „%s“ wurde gelöscht.'), htmlReady($block_name)));
+        }
+
+        $this->redirect('vips/sheets');
+    }
+
+    /**
+     * Stores the weights of blocks, sheets and exams
+     */
+    public function store_weight_action()
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $assignment_weight = Request::floatArray('assignment_weight');
+        $block_weight      = Request::floatArray('block_weight');
+
+        foreach ($assignment_weight as $assignment_id => $weight) {
+            $assignment = VipsAssignment::find($assignment_id);
+            VipsModule::requireEditPermission($assignment);
+
+            $assignment->weight = $weight;
+            $assignment->store();
+        }
+
+        foreach ($block_weight as $block_id => $weight) {
+            $block = VipsBlock::find($block_id);
+            VipsModule::requireStatus('tutor', $block->range_id);
+
+            $block->weight = $weight;
+            $block->store();
+        }
+
+        $this->redirect('vips/solutions');
+    }
+
+    /**
+     * Edit the grade distribution settings.
+     */
+    public function edit_grades_action()
+    {
+        Navigation::activateItem('/course/vips/solutions');
+        PageLayout::setHelpKeyword('Basis.VipsErgebnisse');
+
+        $course_id = Context::getId();
+        VipsModule::requireStatus('tutor', $course_id);
+
+        $grades = ['1,0', '1,3', '1,7', '2,0', '2,3', '2,7', '3,0', '3,3', '3,7', '4,0'];
+        $percentages = array_fill(0, count($grades), '');
+        $comments = array_fill(0, count($grades), '');
+        $settings = CourseConfig::get($course_id);
+
+        foreach ($settings->VIPS_COURSE_GRADES as $value) {
+            $index = array_search($value['grade'], $grades);
+
+            if ($index !== false) {
+                $percentages[$index] = $value['percent'];
+                $comments[$index]    = $value['comment'];
+            }
+        }
+
+        $this->grades            = $grades;
+        $this->grade_settings    = $settings->VIPS_COURSE_GRADES;
+        $this->percentages       = $percentages;
+        $this->comments          = $comments;
+    }
+
+    /**
+     * Stores the distribution of grades
+     */
+    public function store_grades_action()
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $course_id = Context::getId();
+        VipsModule::requireStatus('tutor', $course_id);
+
+        $grades = ['1,0', '1,3', '1,7', '2,0', '2,3', '2,7', '3,0', '3,3', '3,7', '4,0'];
+        $percentages = Request::floatArray('percentage');
+        $comments = Request::getArray('comment');
+        $grade_settings = [];
+        $percent_last = 101;
+        $error = false;
+
+        foreach ($percentages as $i => $percent) {
+            if ($percent) {
+                $grade_settings[] = [
+                    'grade'   => $grades[$i],
+                    'percent' => $percent,
+                    'comment' => trim($comments[$i])
+                ];
+
+                if ($percent < 0 || $percent > 100) {
+                    PageLayout::postError(_('Die Notenwerte müssen zwischen 0 und 100 liegen!'));
+                    $error = true;
+                } else if ($percent_last <= $percent) {
+                    PageLayout::postError(sprintf(_('Die Notenwerte müssen monoton absteigen (%s > %s)!'), $percent_last, $percent));
+                    $error = true;
+                }
+
+                $percent_last = $percent;
+            }
+        }
+
+        if (!$error) {
+            $settings = CourseConfig::get($course_id);
+            $settings->store('VIPS_COURSE_GRADES', $grade_settings);
+
+            PageLayout::postSuccess(_('Die Notenwerte wurden eingetragen.'));
+        }
+
+        $this->redirect('vips/solutions');
+    }
+}

app/controllers/vips/api.php

+<?php
+/**
+ * vips/api.php - API controller for Vips
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * @author      Elmar Ludwig
+ * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
+ */
+
+class Vips_ApiController extends AuthenticatedController
+{
+    public function assignments_action($range_id)
+    {
+        if ($range_id !== $GLOBALS['user']->id) {
+            VipsModule::requireStatus('tutor', $range_id);
+        }
+
+        $assignments = VipsAssignment::findByRangeId($range_id);
+
+        $data = [];
+
+        foreach ($assignments as $assignment) {
+            if ($assignment->type !== 'exam') {
+                $data[] = [
+                    'id'     => (string) $assignment->id,
+                    'title'  => $assignment->test->title,
+                    'type'   => $assignment->type,
+                    'icon'   => $assignment->getTypeIcon()->getShape(),
+                    'start'  => date('d.m.Y, H:i', $assignment->start),
+                    'end'    => date('d.m.Y, H:i', $assignment->end),
+                    'active' => $assignment->active,
+                    'block'  => $assignment->block_id ? $assignment->block->name : null
+                ];
+            }
+        }
+
+        $this->render_json($data);
+    }
+
+    public function assignment_action($assignment_id)
+    {
+        $assignment = VipsAssignment::find($assignment_id);
+        $user_id = $GLOBALS['user']->id;
+
+        VipsModule::requireViewPermission($assignment);
+
+        $released = $assignment->releaseStatus($user_id);
+
+        if ($assignment->type === 'exam') {
+            throw new AccessDeniedException(_('Sie haben keinen Zugriff auf dieses Aufgabenblatt!'));
+        }
+
+        if (
+            !$assignment->checkAccess($user_id)
+            && $released < VipsAssignment::RELEASE_STATUS_CORRECTIONS
+        ) {
+            throw new AccessDeniedException(_('Das Aufgabenblatt kann zur Zeit nicht bearbeitet werden.'));
+        }
+
+        // enter user start time the moment he/she first clicks on any exercise
+        if (!$assignment->checkEditPermission()) {
+            $assignment->recordAssignmentAttempt($user_id);
+        }
+
+        $data = [
+            'id'             => (string) $assignment->id,
+            'title'          => $assignment->test->title,
+            'type'           => $assignment->type,
+            'icon'           => $assignment->getTypeIcon()->getShape(),
+            'start'          => date('d.m.Y, H:i', $assignment->start),
+            'end'            => date('d.m.Y, H:i', $assignment->end),
+            'active'         => $assignment->active,
+            'block'          => $assignment->block_id ? $assignment->block->name : null,
+            'reset_allowed'  => $assignment->isRunning($user_id) && $assignment->isResetAllowed(),
+            'points'         => $assignment->test->getTotalPoints(),
+            'release_status' => $released,
+            'exercises'      => []
+        ];
+
+        foreach ($assignment->getExerciseRefs($user_id) as $exercise_ref) {
+            $template = $this->courseware_template($assignment, $exercise_ref, $released);
+            $exercise = $exercise_ref->exercise;
+
+            $data['exercises'][] = [
+                'id'            => $exercise->id,
+                'type'          => $exercise->type,
+                'title'         => $exercise->title,
+                'template'      => $template->render(),
+                'item_count'    => $exercise->itemCount(),
+                'show_solution' => $template->show_solution
+            ];
+        }
+
+        $this->render_json($data);
+    }
+
+    public function exercise_action($assignment_id, $exercise_id)
+    {
+        $assignment = VipsAssignment::find($assignment_id);
+        $user_id = $GLOBALS['user']->id;
+
+        VipsModule::requireViewPermission($assignment, $exercise_id);
+
+        $released = $assignment->releaseStatus($user_id);
+
+        if ($assignment->type === 'exam') {
+            throw new AccessDeniedException(_('Sie haben keinen Zugriff auf dieses Aufgabenblatt!'));
+        }
+
+        if (
+            !$assignment->checkAccess($user_id)
+            && $released < VipsAssignment::RELEASE_STATUS_CORRECTIONS
+        ) {
+            throw new AccessDeniedException(_('Das Aufgabenblatt kann zur Zeit nicht bearbeitet werden.'));
+        }
+
+        // enter user start time the moment he/she first clicks on any exercise
+        if (!$assignment->checkEditPermission()) {
+            $assignment->recordAssignmentAttempt($user_id);
+        }
+
+        $exercise_ref = VipsExerciseRef::find([$assignment->test_id, $exercise_id]);
+        $template = $this->courseware_template($assignment, $exercise_ref, $released);
+        $exercise = $exercise_ref->exercise;
+
+        $data = [
+            'id'            => $exercise->id,
+            'type'          => $exercise->type,
+            'title'         => $exercise->title,
+            'template'      => $template->render(),
+            'item_count'    => $exercise->itemCount(),
+            'show_solution' => $template->show_solution
+        ];
+
+        $this->render_json($data);
+    }
+
+    private function courseware_template($assignment, $exercise_ref, $released)
+    {
+        $user_id = $GLOBALS['user']->id;
+        $exercise = $exercise_ref->exercise;
+        $solution = $assignment->getSolution($user_id, $exercise->id);
+        $max_tries = $assignment->getMaxTries();
+        $max_points = $exercise_ref->points;
+        $sample_solution = false;
+        $show_solution = false;
+        $tries_left = null;
+
+        if ($assignment->isRunning($user_id)) {
+            // if a solution has been submitted during a selftest
+            if ($max_tries && $solution) {
+                $tries_left = $max_tries - $solution->countTries();
+
+                if (
+                    $solution->points == $max_points
+                    || !$solution->state
+                    || $solution->grader_id
+                    || $tries_left <= 0
+                ) {
+                    $show_solution = true;
+                    $sample_solution = true;
+                }
+            }
+        } else {
+            $show_solution = true;
+            $sample_solution = $released == VipsAssignment::RELEASE_STATUS_SAMPLE_SOLUTIONS;
+
+            if (!$solution) {
+                $solution = new VipsSolution();
+                $solution->assignment = $assignment;
+            }
+        }
+
+        $template = $this->get_template_factory()->open('vips/exercises/courseware_block');
+        $template->user_id = $user_id;
+        $template->assignment = $assignment;
+        $template->exercise = $exercise;
+        $template->tries_left = $tries_left;
+        $template->solution = $solution;
+        $template->max_points = $max_points;
+        $template->sample_solution = $sample_solution;
+        $template->show_solution = $show_solution;
+
+        return $template;
+    }
+
+    public function solution_action($assignment_id, $exercise_id)
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $assignment = VipsAssignment::find($assignment_id);
+        $block_id = Request::int('block_id');
+        $user_id = $GLOBALS['user']->id;
+
+        VipsModule::requireViewPermission($assignment, $exercise_id);
+
+        // check access to courseware block
+        if ($block_id) {
+            $block = Courseware\Block::find($block_id);
+            $payload = $block->type->getPayload();
+
+            if ($payload['assignment'] != $assignment_id) {
+                throw new AccessDeniedException(_('Sie haben keinen Zugriff auf diesen Block!'));
+            }
+        }
+
+        if ($assignment->type === 'exam') {
+            throw new AccessDeniedException(_('Sie haben keinen Zugriff auf dieses Aufgabenblatt!'));
+        }
+
+        if (!$assignment->checkAccess($user_id)) {
+            throw new AccessDeniedException(_('Das Aufgabenblatt kann zur Zeit nicht bearbeitet werden.'));
+        }
+
+        // enter user start time the moment he/she first clicks on any exercise
+        if (!$assignment->checkEditPermission()) {
+            $assignment->recordAssignmentAttempt($user_id);
+        }
+
+        if (Request::isPost()) {
+            $request  = Request::getInstance();
+            $exercise = Exercise::find($exercise_id);
+            $solution = $exercise->getSolutionFromRequest($request, $_FILES);
+            $solution->user_id = $user_id;
+
+            if ($solution->isEmpty()) {
+                $this->set_status(422);
+            } else {
+                $assignment->storeSolution($solution);
+                $this->set_status(201);
+            }
+        }
+
+        if (Request::isDelete()) {
+            if ($assignment->isResetAllowed()) {
+                $assignment->deleteSolution($user_id, $exercise_id);
+                $this->set_status(204);
+            } else {
+                $this->set_status(403);
+            }
+        }
+
+        // update user progress in Courseware
+        if ($block_id) {
+            $progress = new Courseware\UserProgress([$user_id, $block_id]);
+            $progress->grade = $assignment->getUserProgress($user_id);
+            $progress->store();
+        }
+
+        $this->render_nothing();
+    }
+}

app/controllers/vips/config.php

+<?php
+/**
+ * vips/config.php - global configuration controller
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * @author      Elmar Ludwig
+ * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
+ */
+
+class Vips_ConfigController extends AuthenticatedController
+{
+    /**
+     * Callback function being called before an action is executed. If this
+     * function does not return FALSE, the action will be called, otherwise
+     * an error will be generated and processing will be aborted. If this function
+     * already #rendered or #redirected, further processing of the action is
+     * withheld.
+     *
+     * @param string  Name of the action to perform.
+     * @param array   An array of arguments to the action.
+     *
+     * @return bool|void
+     */
+    public function before_filter(&$action, &$args)
+    {
+        parent::before_filter($action, $args);
+
+        $GLOBALS['perm']->check('root');
+
+        Navigation::activateItem('/admin/config/vips');
+        PageLayout::setHelpKeyword('Basis.VipsEinstellungen');
+        PageLayout::setTitle(_('Einstellungen für Aufgaben'));
+    }
+
+    public function index_action()
+    {
+        $this->fields = DataField::getDataFields('user');
+        $this->config = Config::get();
+
+        $widget = new ActionsWidget();
+        $widget->addLink(
+            _('Anstehende Klausuren anzeigen'),
+            $this->pending_assignmentsURL(),
+            Icon::create('doctoral_cap')
+        )->asDialog('size=big');
+        Sidebar::get()->addWidget($widget);
+    }
+
+    public function save_action()
+    {
+        CSRFProtection::verifyUnsafeRequest();
+
+        $exam_mode = Request::int('exam_mode', 0);
+        $exam_terms = trim(Request::get('exam_terms'));
+        $exam_terms = Studip\Markup::purifyHtml($exam_terms);
+
+        $config = Config::get();
+        $config->store('VIPS_EXAM_RESTRICTIONS', $exam_mode);
+        $config->store('VIPS_EXAM_TERMS', $exam_terms);
+
+        $room = Request::getArray('room');
+        $ip_range = Request::getArray('ip_range');
+        $ip_ranges = [];
+
+        foreach ($room as $i => $name) {
+            $name = preg_replace('/[ ,]+/', '_', trim($name));
+
+            if ($name !== '') {
+                $ip_ranges[$name] = trim($ip_range[$i]);
+            }
+        }
+
+        if ($ip_ranges) {
+            ksort($ip_ranges);
+            $config->store('VIPS_EXAM_ROOMS', $ip_ranges);
+        }
+
+        PageLayout::postSuccess(_('Die Einstellungen wurden gespeichert.'));
+
+        $this->redirect('vips/config');
+    }
+
+    public function pending_assignments_action()
+    {
+        $this->assignments = VipsAssignment::findBySQL(
+            "range_type = 'course' AND type = 'exam' AND
+             start BETWEEN UNIX_TIMESTAMP(NOW() - INTERVAL 1 DAY) AND UNIX_TIMESTAMP(NOW() + INTERVAL 14 DAY) AND end > UNIX_TIMESTAMP()
+             ORDER BY start"
+        );
+    }
+}

app/controllers/vips/exam_mode.php

+<?php
+/**
+ * vips/exam_mode.php - restricted exam mode controller
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * @author      Elmar Ludwig
+ * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
+ */
+
+class Vips_ExamModeController extends AuthenticatedController
+{
+    /**
+     * Display a list of courses with currently active tests of type 'exam'.
+     * Only used when there are multiple courses with running exams.
+     */
+    public function index_action()
+    {
+        PageLayout::setTitle(_('Klausurübersicht'));
+
+        Helpbar::get()->addPlainText('',
+            _('Der normale Betrieb von Stud.IP ist für Sie zur Zeit gesperrt, da Klausuren geschrieben werden.'));
+
+        $this->courses = VipsModule::getCoursesWithRunningExams($GLOBALS['user']->id);
+    }
+}

app/views/vips/admin/edit_block.php

+<?php
+/**
+ * @var Vips_AdminController $controller
+ * @var VipsBlock $block
+ * @var VipsGroup[] $groups
+ */
+?>
+<form class="default" action="<?= $controller->link_for('vips/admin/store_block') ?>" data-secure method="POST">
+    <?= CSRFProtection::tokenTag() ?>
+
+    <? if ($block->id): ?>
+        <input type="hidden" name="block_id" value="<?= $block->id ?>">
+    <? endif ?>
+
+    <label>
+        <span class="required"><?= _('Blockname') ?></span>
+        <input type="text" name="block_name" required value="<?= htmlReady($block->name) ?>">
+    </label>
+
+    <label>
+        <?= _('Sichtbarkeit') ?>
+        <?= tooltipIcon(_('Blöcke und zugeordnete Aufgabenblätter können nur für bestimmte Gruppen sichtbar oder auch komplett unsichtbar gemacht werden.')) ?>
+        <select name="group_id">
+            <option value="0">
+                <?= _('Alle Teilnehmenden (keine Beschränkung)') ?>
+            </option>
+            <option value="" <?= !$block->visible ? 'selected' : '' ?>>
+                <?= _('Für Teilnehmende unsichtbar') ?>
+            </option>
+            <? foreach ($groups as $group): ?>
+                <option value="<?= $group->id ?>" <?= $block->group_id === $group->id ? 'selected' : '' ?>>
+                    <?= sprintf(_('Gruppe „%s“'), htmlReady($group->name)) ?>
+                </option>
+            <? endforeach ?>
+        </select>
+    </label>
+
+    <label>
+        <input type="checkbox" name="block_grouped" value="1" <?= $block->weight !== null ? 'checked' : '' ?>>
+        <?= _('Aufgabenblätter in der Bewertung gruppieren') ?>
+        <?= tooltipIcon(_('In der Ergebnisübersicht wird nur der Block anstelle der enthaltenen Aufgabenblätter aufgeführt.')) ?>
+    </label>
+
+    <footer data-dialog-button>
+        <?= Studip\Button::createAccept(_('Speichern'), 'store_block') ?>
+    </footer>
+</form>

app/views/vips/admin/edit_grades.php

+<?php
+/**
+ * @var Vips_AdminController $controller
+ * @var array $grades
+ * @var bool $grade_settings
+ * @var array $percentages
+ * @var string[] $comments
+ */
+?>
+<? setlocale(LC_NUMERIC, $_SESSION['_language'] . '.UTF-8') ?>
+
+<form class="default" action="<?= $controller->link_for('vips/admin/store_grades') ?>" data-secure method="post">
+    <?= CSRFProtection::tokenTag() ?>
+
+    <table class="default">
+        <caption>
+            <?= _('Notenverteilung') ?>
+        </caption>
+        <thead>
+            <tr>
+                <th><?= _('Note') ?></th>
+                <th><?= _('Schwellwert') ?></th>
+                <th><?= _('Kommentar') ?></th>
+            </tr>
+        </thead>
+
+        <tbody>
+            <? for ($i = 0; $i < count($grades); ++$i): ?>
+                <? $class = $grade_settings && !$percentages[$i] ? 'quiet' : '' ?>
+                <tr class="<?= $class ?>">
+                    <td><?= htmlReady($grades[$i]) ?></td>
+                    <td>
+                        <input type="text" class="percent_input" name="percentage[<?= $i ?>]" value="<?= sprintf('%g', $percentages[$i]) ?>"> %
+                    </td>
+                    <td>
+                        <input type="text" name="comment[<?= $i ?>]" value="<?= htmlReady($comments[$i]) ?>" <?= $class ? 'disabled' : '' ?>>
+                    </td>
+                </tr>
+            <? endfor ?>
+        </tbody>
+
+        <tfoot>
+            <tr>
+                <td class="smaller" colspan="3">
+                    <?= _('Wenn Sie eine bestimmte Notenstufe nicht verwenden wollen, lassen Sie das Feld für den Schwellwert leer.') ?>
+                </td>
+            </tr>
+        </tfoot>
+    </table>
+
+    <footer data-dialog-button>
+        <?= Studip\Button::createAccept(_('Speichern'), 'save') ?>
+    </footer>
+</form>
+
+<? setlocale(LC_NUMERIC, 'C') ?>

app/views/vips/config/index.php

+<?php
+/**
+ * @var Vips_ConfigController $controller
+ * @var Config $config
+ */
+?>
+<form class="default width-1200" action="<?= $controller->link_for('vips/config/save') ?>" data-secure method="post">
+    <?= CSRFProtection::tokenTag() ?>
+    <button hidden name="save"></button>
+
+    <fieldset>
+        <legend>
+            <?= _('Einstellungen für Klausuren') ?>
+        </legend>
+
+        <div class="label-text">
+            <?= _('Klausurmodus aktivieren') ?>
+        </div>
+
+        <label class="undecorated">
+            <input type="checkbox" name="exam_mode" value="1" <?= $config->VIPS_EXAM_RESTRICTIONS ? 'checked' : '' ?>>
+            <?= _('Während einer Klausur den Zugriff auf andere Bereiche von Stud.IP sperren') ?>
+            <?= tooltipIcon(_('Gilt nur für Klausuren mit beschränktem IP-Zugriffsbereich.')) ?>
+        </label>
+
+        <div class="label-text">
+            <?= _('Vordefinierte IP-Bereiche für PC-Räume') ?>
+        </div>
+
+        <table class="default">
+            <thead>
+                <tr>
+                    <th style="width: 20%;">
+                        <?= _('Raum') ?>
+                    </th>
+                    <th style="width: 75%;">
+                        <?= _('IP-Bereiche') ?>
+                        <?= tooltipIcon($this->render_partial('vips/sheets/ip_range_tooltip'), false, true) ?>
+                    </th>
+                    <th class="actions">
+                        <?= _('Löschen') ?>
+                    </th>
+                </tr>
+            </thead>
+
+            <tbody class="dynamic_list">
+                <? foreach ($config->VIPS_EXAM_ROOMS ?: [] as $room => $ip_range): ?>
+                    <tr class="dynamic_row">
+                        <td>
+                            <input type="text" name="room[]" value="<?= htmlReady($room) ?>">
+                        </td>
+                        <td>
+                            <input type="text" class="size-l validate_ip_range" name="ip_range[]" value="<?= htmlReady($ip_range) ?>">
+                        </td>
+                        <td class="actions">
+                            <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Eintrag löschen')]) ?>
+                        </td>
+                    </tr>
+                <? endforeach ?>
+
+                <tr class="dynamic_row template">
+                    <td>
+                        <input type="text" name="room[]">
+                    </td>
+                    <td>
+                        <input type="text" class="size-l validate_ip_range" name="ip_range[]">
+                    </td>
+                    <td class="actions">
+                        <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Eintrag löschen')]) ?>
+                    </td>
+                </tr>
+
+                <tr>
+                    <th colspan="3">
+                        <?= Studip\Button::create(_('Eintrag hinzufügen'), 'add_room', ['class' => 'add_dynamic_row']) ?>
+                    </th>
+                </tr>
+            </tbody>
+        </table>
+
+        <label>
+            <?= _('Teilnahmebedingungen vor Beginn einer Klausur') ?>
+            <textarea name="exam_terms" class="size-l wysiwyg"><?= wysiwygReady($config->VIPS_EXAM_TERMS) ?></textarea>
+        </label>
+    </fieldset>
+
+    <footer>
+        <?= Studip\Button::createAccept(_('Speichern'), 'save') ?>
+    </footer>
+</form>

app/views/vips/config/pending_assignments.php

+<?php
+/**
+ * @var Vips_ConfigController $controller
+ * @var VipsAssignment[] $assignments
+ */
+?>
+<? if (count($assignments) === 0): ?>
+    <?= MessageBox::info(_('Es gibt zur Zeit keine anstehenden Klausuren.')) ?>
+<? else: ?>
+    <table class="default sortable-table" data-sortlist="[[1,0]]">
+        <caption>
+            <?= _('Klausuren') ?>
+            <div class="actions">
+                <?= sprintf(ngettext('%d Klausur', '%d Klausuren', count($assignments)), count($assignments)) ?>
+            </div>
+        </caption>
+
+        <thead>
+            <tr class="sortable">
+                <th data-sort="text" style="width: 35%;">
+                    <?= _('Titel') ?>
+                </th>
+
+                <th data-sort="text" style="width: 10%;">
+                    <?= _('Start') ?>
+                </th>
+
+                <th data-sort="text" style="width: 10%;">
+                    <?= _('Ende') ?>
+                </th>
+
+                <th data-sort="text" style="width: 15%;">
+                    <?= _('Autor/-in') ?>
+                </th>
+
+                <th data-sort="text" style="width: 30%;">
+                    <?= _('Veranstaltung') ?>
+                </th>
+            </tr>
+        </thead>
+
+        <tbody>
+            <? foreach ($assignments as $assignment): ?>
+                <tr>
+                    <td>
+                        <a href="<?= $controller->link_for('vips/sheets/edit_assignment', ['cid' => $assignment->range_id, 'assignment_id' => $assignment->id]) ?>">
+                            <?= $assignment->getTypeIcon() ?>
+                            <?= htmlReady($assignment->test->title) ?>
+                        </a>
+                        <? if ($assignment->isRunning() && !$assignment->active): ?>
+                            (<?= _('unterbrochen') ?>)
+                        <? endif ?>
+                    </td>
+
+                    <td data-text="<?= htmlReady($assignment->start) ?>">
+                        <?= date('d.m.Y, H:i', $assignment->start) ?>
+                    </td>
+
+                    <td data-text="<?= htmlReady($assignment->end) ?>">
+                        <?= date('d.m.Y, H:i', $assignment->end) ?>
+                    </td>
+
+                    <td>
+                        <?= htmlReady($assignment->test->user->getFullName('no_title_rev')) ?>
+                    </td>
+
+                    <td>
+                        <a href="<?= URLHelper::getLink('seminar_main.php', ['cid' => $assignment->range_id]) ?>">
+                            <?= htmlReady($assignment->course->name) ?>
+                        </a>
+                    </td>
+                </tr>
+            <? endforeach ?>
+        </tbody>
+    </table>
+<? endif ?>

app/views/vips/exam_mode/index.php

+<?php
+/**
+ * @var array $courses
+ */
+?>
+<? if (count($courses)) : ?>
+    <table class="default width-1200">
+        <caption>
+            <?= _('Bitte wählen Sie den Kurs, in dem Sie die Klausur schreiben möchten:') ?>
+        </caption>
+
+        <thead>
+            <tr>
+                <th style="width: 5%;"></th>
+                <th style="width: 65%;"><?= _('Name') ?></th>
+                <th style="width: 30%;"><?= _('Inhalt') ?></th>
+            </tr>
+        </thead>
+
+        <tbody>
+            <? foreach ($courses as $course_id => $course_name) : ?>
+                <? $nav = VipsModule::$instance->getIconNavigation($course_id, null, null) ?>
+                <? if ($nav): ?>
+                    <tr>
+                        <td>
+                            <?= CourseAvatar::getAvatar($course_id)->getImageTag(Avatar::SMALL) ?>
+                        </td>
+                        <td>
+                            <a href="<?= URLHelper::getLink($nav->getURL(), ['cid' => $course_id]) ?>">
+                                <?= htmlReady($course_name) ?>
+                            </a>
+                        </td>
+                        <td>
+                            <a href="<?= URLHelper::getLink($nav->getURL(), ['cid' => $course_id]) ?>">
+                                <?= $nav->getImage()->asImg($nav->getLinkAttributes()) ?>
+                            </a>
+                        </td>
+                    </tr>
+                <? endif ?>
+            <? endforeach ?>
+        </tbody>
+    </table>
+<? else : ?>
+    <? /* this should never be shown, but can be reached directly by URL */ ?>
+    <?= MessageBox::info(_('Zur Zeit laufen keine Klausuren.')) ?>
+<? endif ?>

app/views/vips/exercises/ClozeTask/correct.php

+<?php
+/**
+ * @var Exercise $exercise
+ * @var VipsSolution $solution
+ * @var array $results
+ * @var array $response
+ * @var bool $show_solution
+ */
+?>
+<div class="description">
+    <!--
+    <? foreach (explode('[[]]', formatReady($exercise->task['text'])) as $blank => $text) : ?>
+     --><?= $text ?><!--
+        <? if (isset($exercise->task['answers'][$blank])) : ?>
+            <? if ($solution->id): ?>
+                <? if ($results[$blank]['points'] == 1): ?>
+                 --><span class="correct_item math-tex"><?= htmlReady($response[$blank]) ?><!--
+                     --><?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['class' => 'correction_inline', 'title' => _('richtig')]) ?><!--
+                 --></span><!--
+                <? elseif ($results[$blank]['points'] == 0.5): ?>
+                 --><span class="fuzzy_item math-tex"><?= htmlReady($response[$blank]) ?><!--
+                     --><?= Icon::create('decline', Icon::ROLE_STATUS_YELLOW)->asImg(['class' => 'correction_inline', 'title' => _('fast richtig')]) ?><!--
+                 --></span><!--
+                <? elseif (empty($edit_solution) || $results[$blank]['safe']): ?>
+                 --><span class="wrong_item math-tex"><?= htmlReady($response[$blank]) ?><!--
+                     --><?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['class' => 'correction_inline', 'title' => _('falsch')]) ?><!--
+                 --></span><!--
+                <? else: ?>
+                 --><span class="wrong_item math-tex"><?= htmlReady($response[$blank]) ?><!--
+                     --><?= Icon::create('question', Icon::ROLE_STATUS_RED)->asImg(['class' => 'correction_inline', 'title' => _('unbekannte Antwort')]) ?><!--
+                 --></span><!--
+                <? endif ?>
+            <? endif ?>
+            <? if ($show_solution && (empty($results) || $results[$blank]['points'] < 1) && $exercise->correctAnswers($blank)): ?>
+             --><span class="correct_item math-tex"><?= htmlReady(implode(' | ', $exercise->correctAnswers($blank))) ?></span><!--
+            <? endif ?>
+        <? endif ?>
+    <? endforeach ?>
+    -->
+</div>
+
+<?= $this->render_partial('exercises/evaluation_mode_info', ['evaluation_mode' => false]) ?>

app/views/vips/exercises/ClozeTask/edit.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ */
+?>
+<? $tooltip = sprintf('<p>%s:<br>[[ ... ]]</p><p>%s:<br>[[ ... | ... | ... ]]</p><p>%s:<br>[[ ... | ... | *... ]]</p><p>%s:<br>[[: ... | ... | *... ]]</p>',
+      _('Lücke hinzufügen'), _('Mehrere Lösungen mit | trennen'), _('Falsche Antworten mit * markieren'), _('Auswahl aus Liste statt Eingabe')) ?>
+
+<label>
+    <?= _('Lückentext') ?> <?= tooltipIcon($tooltip, false, true) ?>
+    <? $cloze_text = $exercise->getClozeText() ?>
+    <textarea name="cloze_text" class="character_input size-l wysiwyg" rows="<?= $exercise->textareaSize($cloze_text) ?>"><?= wysiwygReady($cloze_text) ?></textarea>
+</label>
+
+<label>
+    <?= _('Antwortmodus') ?>
+
+    <select name="layout" onchange="$(this).parent().next().toggle(this.value === '')">
+        <option value="">
+            <?= _('Texteingabe') ?>
+        </option>
+        <option value="select" <?= $exercise->interactionType() === 'select' ? 'selected' : '' ?>>
+            <?= _('Antwort aus Liste auswählen') ?>
+        </option>
+        <option value="drag" <?= $exercise->interactionType() === 'drag' ? 'selected' : '' ?>>
+            <?= _('Antwort in das Feld ziehen') ?>
+        </option>
+    </select>
+</label>
+
+<div style="<?= $exercise->interactionType() !== 'input' ? 'display: none;' : '' ?>">
+    <label>
+        <?= _('Art des Textvergleichs') ?>
+
+        <select name="compare" onchange="$(this).parent().next('label').toggle($(this).val() === 'numeric')">
+            <option value="">
+                <?= _('Groß-/Kleinschreibung unterscheiden') ?>
+            </option>
+            <option value="ignorecase" <?= isset($exercise->task['compare']) && $exercise->task['compare'] === 'ignorecase' ? 'selected' : '' ?>>
+                <?= _('Groß-/Kleinschreibung ignorieren') ?>
+            </option>
+            <option value="numeric" <?= isset($exercise->task['compare']) && $exercise->task['compare'] === 'numeric' ? 'selected' : '' ?>>
+                <?= _('Numerischer Wertevergleich (ggf. mit Einheit)') ?>
+            </option>
+        </select>
+    </label>
+
+    <label style="<?= isset($exercise->task['compare']) && $exercise->task['compare'] === 'numeric' ? '' : 'display: none;' ?>">
+        <?= _('Erlaubte relative Abweichung vom korrekten Wert') ?>
+        <br>
+        <input type="text" class="size-s" style="display: inline; text-align: right;"
+               name="epsilon" value="<?= isset($exercise->task['epsilon']) ? sprintf('%g', $exercise->task['epsilon'] * 100) : '0' ?>"> %
+    </label>
+
+    <label>
+        <input type="checkbox" <?= isset($exercise->task['input_width']) ? 'checked' : '' ?> onchange="$(this).next('select').attr('disabled', !this.checked)">
+        <?= _('Feste Breite der Eingabefelder:') ?>
+
+        <select name="input_width" style="display: inline; width: auto;" <?= isset($exercise->task['input_width']) ? '' : 'disabled' ?>>
+            <? foreach ([_('kurz'), _('mittel'), _('lang'), _('maximal')] as $key => $label): ?>
+                <option value="<?= $key ?>" <?= isset($exercise->task['input_width']) && $exercise->task['input_width'] == $key ? 'selected' : '' ?>>
+                    <?= htmlReady($label) ?>
+                </option>
+            <? endforeach ?>
+        </select>
+    </label>
+</div>

app/views/vips/exercises/ClozeTask/print.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ * @var VipsSolution $solution
+ * @var array $response
+ * @var array $results
+ * @var bool $print_correction
+ * @var bool $show_solution
+ */
+?>
+<div class="description">
+    <!--
+    <? foreach (explode('[[]]', formatReady($exercise->task['text'])) as $blank => $text): ?>
+     --><?= $text ?><!--
+        <? if (isset($exercise->task['answers'][$blank])) : ?>
+            <? if ($solution->id && $response[$blank] !== ''): ?>
+             --><span class="math-tex" style="text-decoration: underline;">&nbsp;&nbsp;<?= htmlReady($response[$blank]) ?>&nbsp;&nbsp;</span><!--
+                <? if ($print_correction): ?>
+                    <? if ($results[$blank]['points'] == 1): ?>
+                     --><?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['title' => _('richtig')]) ?><!--
+                    <? elseif ($results[$blank]['points'] == 0.5): ?>
+                     --><?= Icon::create('decline', Icon::ROLE_STATUS_YELLOW)->asImg(['title' => _('fast richtig')]) ?><!--
+                    <? else: ?>
+                     --><?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['title' => _('falsch')]) ?><!--
+                    <? endif ?>
+                <? endif ?>
+            <? elseif ($exercise->isSelect($blank)): ?>
+                <? foreach ($exercise->task['answers'][$blank] as $index => $option) : ?>
+                 --><?= $index ? ' | ' : '' ?><!--
+                 --><?= Assets::img('choice_unchecked.svg', ['style' => 'vertical-align: text-bottom;']) ?> <!--
+                 --><span class="math-tex" style="border-bottom: 1px dotted black;"><?= htmlReady($option['text']) ?></span><!--
+                <? endforeach ?>
+            <? else: ?>
+             --><?= str_repeat('_', $exercise->getInputWidth($blank)) ?><!--
+            <? endif ?>
+            <? if ($show_solution && (empty($results) || $results[$blank]['points'] < 1) && $exercise->correctAnswers($blank)): ?>
+             --><span class="correct_item math-tex"><?= htmlReady(implode(' | ', $exercise->correctAnswers($blank))) ?></span><!--
+            <? endif ?>
+        <? endif ?>
+    <? endforeach ?>
+    -->
+</div>
+
+<? if ($exercise->interactionType() === 'drag'): ?>
+    <div class="label-text">
+        <? if ($print_correction): ?>
+            <?= _('Nicht zugeordnete Antworten:') ?>
+        <? else: ?>
+            <?= _('Antwortmöglichkeiten:') ?>
+        <? endif ?>
+    </div>
+
+    <ol>
+        <? foreach ($exercise->availableAnswers($solution) as $item): ?>
+            <li>
+                <span class="math-tex"><?= htmlReady($item) ?></span>
+            </li>
+        <? endforeach ?>
+    </ol>
+<? endif ?>
+
+<?= $this->render_partial('exercises/evaluation_mode_info', ['evaluation_mode' => false]) ?>

app/views/vips/exercises/ClozeTask/solve.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ * @var VipsSolution $solution
+ * @var array $response
+ */
+?>
+<div class="description">
+    <!--
+    <? foreach (explode('[[]]', formatReady($exercise->task['text'])) as $blank => $text): ?>
+     --><?= $text ?><!--
+        <? if (isset($exercise->task['answers'][$blank])) : ?>
+            <? if ($exercise->interactionType() === 'drag'): ?>
+             --><span class="cloze_drop math-tex" title="<?= _('Elemente hier ablegen') ?>">
+                    <input type="hidden" name="answer[<?= $blank ?>]" value="<?= htmlReady($response[$blank] ?? '') ?>">
+                    <? if (isset($response[$blank]) && $response[$blank] !== ''): ?>
+                        <span class="cloze_item drag-handle" data-value="<?= htmlReady($response[$blank]) ?>"><?= htmlReady($response[$blank]) ?></span>
+                    <? endif ?>
+                </span><!--
+            <? elseif ($exercise->isSelect($blank)): ?>
+             --><select class="cloze_select" name="answer[<?= $blank ?>]">
+                    <? if ($exercise->task['answers'][$blank][0]['text'] !== ''): ?>
+                        <option value="">&nbsp;</option>
+                    <? endif ?>
+                    <? foreach ($exercise->task['answers'][$blank] as $option): ?>
+                        <option value="<?= htmlReady($option['text']) ?>" <?= trim($option['text']) === ($response[$blank] ?? '') ? ' selected' : '' ?>>
+                            <?= htmlReady($option['text']) ?>
+                        </option>
+                    <? endforeach ?>
+                </select><!--
+            <? else: ?>
+             --><input type="text" class="character_input cloze_input" name="answer[<?= $blank ?>]"
+                       style="width: <?= $exercise->getInputWidth($blank) ?>em;" value="<?= htmlReady($response[$blank] ?? '') ?>"><!--
+            <? endif ?>
+        <? endif ?>
+    <? endforeach ?>
+    -->
+</div>
+
+<? if ($exercise->interactionType() === 'drag'): ?>
+    <span class="cloze_drop cloze_items math-tex">
+        <? foreach ($exercise->availableAnswers($solution) as $item): ?>
+            <span class="cloze_item drag-handle" data-value="<?= htmlReady($item) ?>"><?= htmlReady($item) ?></span>
+        <? endforeach ?>
+    </span>
+<? endif ?>

app/views/vips/exercises/ClozeTask/xml.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ * @var float|int $points
+ */
+?>
+<exercise id="exercise-<?= $exercise->id ?>" points="<?= $points ?>"
+<? if ($exercise->options['comment']): ?> feedback="true"<? endif ?>>
+    <title>
+        <?= htmlReady($exercise->title) ?>
+    </title>
+    <description>
+        <?= htmlReady($exercise->description) ?>
+    </description>
+    <? if ($exercise->options['hint'] != ''): ?>
+        <hint>
+            <?= htmlReady($exercise->options['hint']) ?>
+        </hint>
+    <? endif ?>
+    <items>
+        <item type="cloze-<?= $exercise->interactionType() ?>">
+            <description>
+                <? foreach (explode('[[]]', $exercise->task['text']) as $blank => $text): ?>
+                    <text><?= htmlReady($text) ?></text>
+                    <? if (isset($exercise->task['answers'][$blank])): ?>
+                        <answers<? if ($exercise->isSelect($blank, false)): ?> select="true"<? endif ?>>
+                            <? foreach ($exercise->task['answers'][$blank] as $answer): ?>
+                                <answer score="<?= $answer['score'] ?>"><?= htmlReady($answer['text']) ?></answer>
+                            <? endforeach ?>
+                        </answers>
+                    <? endif ?>
+                <? endforeach ?>
+            </description>
+            <? if (isset($exercise->task['input_width'])): ?>
+                <submission-hints>
+                    <input type="text" width="<?= (int) $exercise->task['input_width'] ?>"/>
+                </submission-hints>
+            <? endif ?>
+            <? if (!empty($exercise->task['compare'])): ?>
+                <evaluation-hints>
+                    <similarity type="<?= htmlReady($exercise->task['compare']) ?>"/>
+                    <? if ($exercise->task['compare'] === 'numeric'): ?>
+                        <input-data type="relative-epsilon">
+                            <?= (float) $exercise->task['epsilon'] ?>
+                        </input-data>
+                    <? endif ?>
+                </evaluation-hints>
+            <? endif ?>
+            <? if ($exercise->options['feedback'] != ''): ?>
+                <feedback>
+                    <?= htmlReady($exercise->options['feedback']) ?>
+                </feedback>
+            <? endif ?>
+        </item>
+    </items>
+    <? if ($exercise->folder): ?>
+        <file-refs<? if ($exercise->options['files_hidden']): ?> hidden="true"<? endif ?>>
+            <? foreach ($exercise->folder->file_refs as $file_ref): ?>
+                <file-ref ref="file-<?= $file_ref->file_id ?>"/>
+            <? endforeach ?>
+        </file-refs>
+    <? endif ?>
+</exercise>

app/views/vips/exercises/MatchingTask/correct.php

+<?php
+/**
+ * @var Exercise $exercise
+ * @var VipsSolution $solution
+ * @var array $results
+ * @var array $response
+ * @var bool $show_solution
+ */
+?>
+<? $exercise->sortAnswersById(); ?>
+
+<table class="default description inline-content">
+    <thead>
+        <tr>
+            <th>
+                <?= _('Vorgegebener Text') ?>
+            </th>
+
+            <th>
+                <?= _('Zugeordnete Antworten') ?>
+            </th>
+
+            <? if ($show_solution): ?>
+                <th>
+                    <?= _('Richtige Antworten') ?>
+                </th>
+            <? endif ?>
+        </tr>
+    </thead>
+
+    <tbody>
+        <? foreach ($exercise->task['groups'] as $i => $group) : ?>
+            <tr style="vertical-align: top;">
+                <td>
+                    <div class="mc_item">
+                        <?= formatReady($group) ?>
+                    </div>
+                </td>
+
+                <td>
+                    <? foreach ($exercise->task['answers'] as $answer): ?>
+                        <? if (isset($response[$answer['id']]) && $response[$answer['id']] == $i): ?>
+                            <div class="<?= $exercise->isCorrectAnswer($answer, $i) ? 'correct_item' : 'mc_item' ?>">
+                                <?= formatReady($answer['text']) ?>
+
+                                <? if ($exercise->isCorrectAnswer($answer, $i)): ?>
+                                    <?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['class' => 'correction_marker', 'title' => _('richtig')]) ?>
+                                <? else: ?>
+                                    <?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['class' => 'correction_marker', 'title' => _('falsch')]) ?>
+                                <? endif ?>
+                            </div>
+                        <? endif ?>
+                    <? endforeach ?>
+                </td>
+
+                <? if ($show_solution): ?>
+                    <td>
+                        <? foreach ($exercise->correctAnswers($i) as $correct_answer): ?>
+                            <div class="correct_item">
+                                <?= formatReady($correct_answer) ?>
+                            </div>
+                        <? endforeach ?>
+                    </td>
+                <? endif ?>
+            </tr>
+        <? endforeach ?>
+    </tbody>
+</table>
+
+<div class="label-text">
+    <?= _('Nicht zugeordnete Antworten:') ?>
+</div>
+
+<? foreach ($exercise->task['answers'] as $answer): ?>
+    <? if (!isset($response[$answer['id']]) || $response[$answer['id']] == -1): ?>
+        <div class="inline-block inline-content <?= $exercise->isCorrectAnswer($answer, -1) ? 'correct_item' : 'mc_item' ?>">
+            <?= formatReady($answer['text']) ?>
+
+            <? if ($solution->id): ?>
+                <? if ($exercise->isCorrectAnswer($answer, -1)): ?>
+                    <?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['class' => 'correction_inline', 'title' => _('richtig')]) ?>
+                <? else: ?>
+                    <?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['class' => 'correction_inline', 'title' => _('falsch')]) ?>
+                <? endif ?>
+            <? endif ?>
+        </div>
+    <? endif ?>
+<? endforeach ?>

app/views/vips/exercises/MatchingTask/edit.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ */
+?>
+<label>
+    <input class="rh_select_type" type="checkbox" name="multiple" value="1" <?= $exercise->isMultiSelect() ? 'checked' : '' ?>>
+    <?= _('Mehrfachzuordnungen zu einem vorgegebenen Text erlauben') ?>
+</label>
+
+<table class="default description <?= $exercise->isMultiSelect() ? '' : 'rh_single' ?>">
+    <thead>
+        <tr>
+            <th style="width: 50%;">
+                <?= _('Vorgegebener Text') ?>
+            </th>
+            <th style="width: 50%;">
+                <?= _('Zuzuordnende Antworten') ?>
+            </th>
+        </tr>
+    </thead>
+
+    <tbody class="dynamic_list" style="vertical-align: top;">
+        <? foreach ($exercise->task['groups'] as $i => $group): ?>
+            <? $size = $exercise->flexibleInputSize($group) ?>
+
+            <tr class="dynamic_row">
+                <td class="size_toggle size_<?= $size ?>">
+                    <?= $this->render_partial('exercises/flexible_input', ['name' => "default[$i]", 'value' => $group, 'size' => $size]) ?>
+
+                    <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Zuordnung löschen')]) ?>
+                </td>
+                <td class="dynamic_list">
+                    <? $j = 0 ?>
+                    <? foreach ($exercise->task['answers'] as $answer): ?>
+                        <? if ($answer['group'] == $i): ?>
+                            <? $size = $exercise->flexibleInputSize($answer['text']) ?>
+
+                            <div class="dynamic_row size_toggle size_<?= $size ?>">
+                                <?= $this->render_partial('exercises/flexible_input', ['name' => "answer[$i][$j]", 'value' => $answer['text'], 'size' => $size]) ?>
+                                <input type="hidden" name="id[<?= $i ?>][<?= $j++ ?>]" value="<?= $answer['id'] ?>">
+
+                                <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Antwort löschen')]) ?>
+                            </div>
+                        <? endif ?>
+                    <? endforeach ?>
+
+                    <div class="dynamic_row size_toggle size_small template">
+                        <?= $this->render_partial('exercises/flexible_input', ['data_name' => "answer[$i]", 'size' => 'small']) ?>
+                        <input type="hidden" data-name="id[<?= $i ?>]">
+
+                        <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Antwort löschen')]) ?>
+                    </div>
+
+                    <?= Studip\Button::create(_('Antwort hinzufügen'), 'add_answer', ['class' => 'add_dynamic_row rh_add_answer']) ?>
+                </td>
+            </tr>
+        <? endforeach ?>
+
+        <tr class="dynamic_row template">
+            <td class="size_toggle size_small">
+                <?= $this->render_partial('exercises/flexible_input', ['data_name' => 'default', 'size' => 'small']) ?>
+
+                <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Zuordnung löschen')]) ?>
+            </td>
+            <td class="dynamic_list">
+                <div class="dynamic_row size_toggle size_small template">
+                    <?= $this->render_partial('exercises/flexible_input', ['data_name' => ':answer', 'size' => 'small']) ?>
+                    <input type="hidden" data-name=":id">
+
+                    <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Antwort löschen')]) ?>
+                </div>
+
+                <?= Studip\Button::create(_('Antwort hinzufügen'), 'add_answer', ['class' => 'add_dynamic_row rh_add_answer']) ?>
+            </td>
+        </tr>
+
+        <tr>
+            <th colspan="2">
+                <?= Studip\Button::create(_('Zuordnung hinzufügen'), 'add_pairs', ['class' => 'add_dynamic_row']) ?>
+            </th>
+        </tr>
+    </tbody>
+</table>
+
+<div class="label-text">
+    <?= _('Distraktoren (optional)') ?>
+    <?= tooltipIcon(_('Weitere Antworten, die keinem Text zugeordnet werden dürfen.')) ?>
+</div>
+
+<div class="dynamic_list">
+    <? foreach ($exercise->task['answers'] as $answer): ?>
+        <? if ($answer['group'] == -1): ?>
+            <? $size = $exercise->flexibleInputSize($answer['text']) ?>
+
+            <div class="dynamic_row mc_row">
+                <label class="dynamic_counter size_toggle size_<?= $size ?> undecorated">
+                    <?= $this->render_partial('exercises/flexible_input', ['name' => '_answer[]', 'value' => $answer['text'], 'size' => $size]) ?>
+                    <input type="hidden" name="_id[]" value="<?= $answer['id'] ?>">
+                </label>
+
+                <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Distraktor löschen')]) ?>
+            </div>
+        <? endif ?>
+    <? endforeach ?>
+
+    <div class="dynamic_row mc_row template">
+        <label class="dynamic_counter size_toggle size_small undecorated">
+            <?= $this->render_partial('exercises/flexible_input', ['data_name' => '', 'name' => '_answer[]', 'size' => 'small']) ?>
+            <input type="hidden" name="_id[]">
+        </label>
+
+        <?= Icon::create('trash')->asInput(['class' => 'delete_dynamic_row', 'title' => _('Distraktor löschen')]) ?>
+    </div>
+
+    <?= Studip\Button::create(_('Distraktor hinzufügen'), 'add_false_answer', ['class' => 'add_dynamic_row']) ?>
+</div>

app/views/vips/exercises/MatchingTask/print.php

+<?php
+/**
+ * @var ClozeTask $exercise
+ * @var VipsSolution $solution
+ * @var bool $print_correction
+ * @var bool $show_solution
+ */
+?>
+<? $exercise->sortAnswersById(); ?>
+
+<table class="content description inline-content" style="min-width: 40em;">
+    <thead>
+        <tr>
+            <th>
+                <?= _('Vorgegebener Text') ?>
+            </th>
+
+            <th>
+                <?= _('Zugeordnete Antworten') ?>
+            </th>
+
+            <? if ($show_solution) : ?>
+                <th>
+                    <?= _('Richtige Antworten') ?>
+                </th>
+            <? endif ?>
+        </tr>
+    </thead>
+
+    <tbody>
+        <? foreach ($exercise->task['groups'] as $i => $group) : ?>
+            <tr style="vertical-align: top;">
+                <td>
+                    <div class="mc_item">
+                        <?= formatReady($group) ?>
+                    </div>
+                </td>
+
+                <td>
+                    <? foreach ($exercise->task['answers'] as $answer): ?>
+                        <? if (isset($response[$answer['id']]) && $response[$answer['id']] == $i): ?>
+                            <div class="<?= $print_correction && $exercise->isCorrectAnswer($answer, $i) ? 'correct_item' : 'mc_item' ?>">
+                                <?= formatReady($answer['text']) ?>
+
+                                <? if ($print_correction): ?>
+                                    <? if ($exercise->isCorrectAnswer($answer, $i)) : ?>
+                                        <?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['class' => 'correction_marker', 'title' => _('richtig')]) ?>
+                                    <? else : ?>
+                                        <?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['class' => 'correction_marker', 'title' => _('falsch')]) ?>
+                                    <? endif ?>
+                                <? endif ?>
+                            </div>
+                        <? endif ?>
+                    <? endforeach ?>
+                </td>
+
+                <? if ($show_solution) : ?>
+                    <td>
+                        <? foreach ($exercise->correctAnswers($i) as $correct_answer): ?>
+                            <div class="mc_item">
+                                <?= formatReady($correct_answer) ?>
+                            </div>
+                        <? endforeach ?>
+                    </td>
+                <? endif ?>
+            </tr>
+        <? endforeach ?>
+    </tbody>
+</table>
+
+<div class="label-text">
+    <? if ($print_correction): ?>
+        <?= _('Nicht zugeordnete Antworten:') ?>
+    <? else: ?>
+        <?= _('Antwortmöglichkeiten:') ?>
+    <? endif ?>
+</div>
+
+<ol class="inline-content">
+    <? foreach ($exercise->task['answers'] as $answer): ?>
+        <? if (!isset($response[$answer['id']]) || $response[$answer['id']] == -1): ?>
+            <li>
+                <?= formatReady($answer['text']) ?>
+
+                <? if ($solution->id && $print_correction): ?>
+                    <? if ($exercise->isCorrectAnswer($answer, -1)): ?>
+                        <?= Icon::create('accept', Icon::ROLE_STATUS_GREEN)->asImg(['title' => _('richtig')]) ?>
+                    <? else: ?>
+                        <?= Icon::create('decline', Icon::ROLE_STATUS_RED)->asImg(['title' => _('falsch')]) ?>
+                    <? endif ?>
+                <? endif ?>
+            </li>
+        <? endif ?>
+    <? endforeach ?>
+</ol>