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renderer.php
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renderer.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* qtype_kprime renderer classes.
*
* @package qtype_kprime
* @author Amr Hourani ([email protected])
* @author Martin Hanusch ([email protected])
* @author Jürgen Zimmer ([email protected])
* @author Andreas Hruska ([email protected])
* @copyright 2016 ETHZ {@link http://ethz.ch/}
* @copyright 2014 eDaktik GmbH {@link http://www.edaktik.at}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* Subclass for generating the bits of output specific to qtype_kprime questions.
*
* @copyright 2016 ETHZ {@link http://ethz.ch/}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class qtype_kprime_renderer extends qtype_renderer {
/**
* Returns input type
* @return string
*/
protected function get_input_type() {
return 'radio';
}
/**
* Returns the name of a given input
* @param question_attempt $qa
* @param unknown $value
* @return string
*/
protected function get_input_name(question_attempt $qa, $value) {
return $qa->get_qt_field_name('option');
}
/**
* Returns the value of a fiven input
* @param unknown $value
* @return unknown
*/
protected function get_input_value($value) {
return $value;
}
/**
* Returns the id of a given input
* @param question_attempt $qa
* @param unknown $value
* @return string
*/
protected function get_input_id(question_attempt $qa, $value) {
return $qa->get_qt_field_name('option' . $value);
}
/**
* Generate the display of the formulation part of the question.
* This is the area that contains the question text (stem), and the controls for students to
* input their answers.
* @param question_attempt $qa the question attempt to display.
* @param question_display_options $displayoptions controls what should and should not be displayed.
* @return string HTML fragment.
*/
public function formulation_and_controls(question_attempt $qa, question_display_options $displayoptions) {
$question = $qa->get_question();
$response = $question->get_response($qa);
$inputname = $qa->get_qt_field_name('option');
$inputattributes = ['type' => $this->get_input_type(), 'name' => $inputname];
if ($displayoptions->readonly) {
$inputattributes['disabled'] = 'disabled';
}
$result = '';
$result .= html_writer::tag('div', $question->format_questiontext($qa), ['class' => 'qtext']);
$table = new html_table();
$table->attributes['class'] = 'generaltable';
$table->head = [];
// Add the response texts as table headers.
foreach ($question->columns as $column) {
$cell = new html_table_cell(
$question->make_html_inline(
$question->format_text($column->responsetext,
$column->responsetextformat, $qa, 'question', 'response',
$column->id)));
$table->head[] = $cell;
}
// Add empty header for option texts.
$table->head[] = '';
// Add empty header for correctness if needed.
if ($displayoptions->correctness) {
$table->head[] = '';
}
// Add empty header for feedback if needed.
if ($displayoptions->feedback) {
$table->head[] = '';
}
$rowcount = 1;
$isreadonly = $displayoptions->readonly;
foreach ($question->get_order($qa) as $key => $rowid) {
$field = $question->field($key);
$row = $question->rows[$rowid];
// Holds the data for one table row.
$rowdata = [];
// Add the response radio buttons to the table.
foreach ($question->columns as $column) {
$buttonname = $qa->get_field_prefix() . $field;
$ischecked = false;
if (property_exists((object) $response, $field) && ($response[$field] == $column->number)) {
$ischecked = true;
}
$radio = $this->radiobutton($buttonname, $column->number, $ischecked, $isreadonly);
// Show correctness icon with radio button if needed.
if ($displayoptions->correctness) {
$weight = $question->weight($row->number, $column->number);
$radio .= '<span class="kprimegreyingout">' . $this->feedback_image($weight > 0.0) . '</span>';
}
$cell = new html_table_cell($radio);
$cell->attributes['class'] = 'kprimeresponsebutton';
$rowdata[] = $cell;
}
// Add the formated option text to the table.
$rowtext = $question->make_html_inline(
$question->format_text($row->optiontext, $row->optiontextformat, $qa, 'qtype_kprime', 'optiontext', $row->id));
$cell = new html_table_cell('<span class="optiontext">' . $rowtext . '</span>');
$cell->attributes['class'] = 'optiontext';
$rowdata[] = $cell;
// Has a selection been made for this option?
$isselected = $question->is_answered($response, $key);
// For correctness we have to grade the option...
if ($displayoptions->correctness) {
$rowgrade = $question->grading()->grade_row($question, $key, $row, $response);
$cell = new html_table_cell($this->feedback_image($rowgrade));
$cell->attributes['class'] = 'kprimecorrectness';
$rowdata[] = $cell;
}
// Add the feedback to the table, if it is visible.
if ($displayoptions->feedback
&& empty($displayoptions->suppresschoicefeedback)
&& $isselected
&& trim($row->optionfeedback)) {
$cell = new html_table_cell(
html_writer::tag('div',
$question->make_html_inline(
$question->format_text($row->optionfeedback,
$row->optionfeedbackformat, $qa, 'qtype_kprime',
'feedbacktext', $rowid)),
['class' => 'kprimespecificfeedback']));
$rowdata[] = $cell;
} else {
$cell = new html_table_cell(html_writer::tag('div', ''));
$rowdata[] = $cell;
}
$table->data[] = $rowdata;
}
$result .= html_writer::table($table, true);
if ($qa->get_state() == question_state::$invalid) {
$result .= html_writer::nonempty_tag('div',
$question->get_validation_error($qa->get_last_qt_data()),
['class' => 'validationerror']);
}
if (!empty(get_config('qtype_kprime')->showscoringmethod)) {
$result .= $this->showscoringmethod($question);
}
return $result;
}
/**
* Returns a string containing the rendererd question's scoring method.
* Appends an info icon containing information about the scoring method.
* @param qtype_mtf_question $question
* @return string
*/
private function showscoringmethod($question) {
$result = '';
if (get_string_manager()->string_exists('scoring' . $question->scoringmethod, 'qtype_kprime')) {
$outputscoringmethod = get_string('scoring' . $question->scoringmethod, 'qtype_kprime');
} else {
$outputscoringmethod = $question->scoringmethod;
}
if (get_string_manager()->string_exists('scoring' . $question->scoringmethod . '_help', 'qtype_kprime')) {
$label = get_string('scoringmethod', 'qtype_kprime'). ': <b>' . ucfirst($outputscoringmethod) . '</b>';
$result .= html_writer::tag('div',
'<br>'. $label . $this->output->help_icon('scoring' . $question->scoringmethod, 'qtype_kprime'),
['id' => 'scoringmethodinfo_q' . $question->id, 'label' => $label]);
}
return $result;
}
/**
* Returns the HTML representation of a radio button with the given attributes.
* @param string $name
* @param int $value
* @param bool $checked
* @param bool $readonly
* @return string
*/
protected static function radiobutton($name, $value, $checked, $readonly) {
$readonly = $readonly ? 'readonly="readonly" disabled="disabled"' : '';
$checked = $checked ? 'checked="checked"' : '';
return '<label><input type="radio" name="' . $name . '" value="' . $value . '" ' . $checked . ' ' .
$readonly . '/></label>';
}
/**
* The prompt for the user to answer a question.
* @return Ambigous <string, lang_string, unknown, mixed>
*/
protected function prompt() {
return get_string('selectone', 'qtype_kprime');
}
/**
* (non-PHPdoc).
* @see qtype_renderer::correct_response()
* @param question_attempt $qa
* @return string
*/
public function correct_response(question_attempt $qa) {
$question = $qa->get_question();
$result = [];
$response = '';
$correctresponse = $question->get_correct_response(true);
foreach ($question->order as $key => $rowid) {
$row = $question->rows[$rowid];
if (isset($correctresponse[$rowid])) {
if (isset($question->columns[$correctresponse[$rowid]])) {
$correctcolumn = $question->columns[$correctresponse[$rowid]];
}
} else {
$correctcolumn = new stdClass();
$correctcolumn->responsetextformat = 1;
$correctcolumn->responsetext = get_string('false', 'qtype_kprime');
$correctcolumn->id = $rowid;
}
$result[] = ' ' .
$question->make_html_inline(
$question->format_text($row->optiontext, $row->optiontextformat, $qa,
'qtype_kprime', 'optiontext', $rowid)) . ': ' . $question->make_html_inline(
$question->format_text($correctcolumn->responsetext,
$correctcolumn->responsetextformat, $qa, 'question', 'response',
$correctcolumn->id));
}
if (!empty($result)) {
$response = '<ul style="list-style-type: none;"><li>';
$response .= implode('</li><li>', $result);
$response .= '</li></ul>';
}
return $response;
}
}