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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/>.
defined('MOODLE_INTERNAL') OR die('not allowed');
require_once($CFG->dirroot.'/mod/feedback/item/feedback_item_class.php');
define('FEEDBACK_RADIORATED_ADJUST_SEP', '<<<<<');
define('FEEDBACK_MULTICHOICERATED_MAXCOUNT', 10); //count of possible items
define('FEEDBACK_MULTICHOICERATED_VALUE_SEP', '####');
define('FEEDBACK_MULTICHOICERATED_VALUE_SEP2', '/');
define('FEEDBACK_MULTICHOICERATED_TYPE_SEP', '>>>>>');
define('FEEDBACK_MULTICHOICERATED_LINE_SEP', '|');
define('FEEDBACK_MULTICHOICERATED_ADJUST_SEP', '<<<<<');
define('FEEDBACK_MULTICHOICERATED_IGNOREEMPTY', 'i');
define('FEEDBACK_MULTICHOICERATED_HIDENOSELECT', 'h');
class feedback_item_multichoicerated extends feedback_item_base {
protected $type = "multichoicerated";
private $commonparams;
private $item_form;
private $item;
public function init() {
}
public function build_editform($item, $feedback, $cm) {
global $DB, $CFG;
require_once('multichoicerated_form.php');
//get the lastposition number of the feedback_items
$position = $item->position;
$lastposition = $DB->count_records('feedback_item', array('feedback'=>$feedback->id));
if ($position == -1) {
$i_formselect_last = $lastposition + 1;
$i_formselect_value = $lastposition + 1;
$item->position = $lastposition + 1;
} else {
$i_formselect_last = $lastposition;
$i_formselect_value = $item->position;
}
//the elements for position dropdownlist
$positionlist = array_slice(range(0, $i_formselect_last), 1, $i_formselect_last, true);
$item->presentation = empty($item->presentation) ? '' : $item->presentation;
$info = $this->get_info($item);
$item->ignoreempty = $this->ignoreempty($item);
$item->hidenoselect = $this->hidenoselect($item);
//all items for dependitem
$feedbackitems = feedback_get_depend_candidates_for_item($feedback, $item);
$commonparams = array('cmid'=>$cm->id,
'id'=>isset($item->id) ? $item->id : null,
'typ'=>$item->typ,
'items'=>$feedbackitems,
'feedback'=>$feedback->id);
//build the form
$customdata = array('item' => $item,
'common' => $commonparams,
'positionlist' => $positionlist,
'position' => $position,
'info' => $info);
$this->item_form = new feedback_multichoicerated_form('edit_item.php', $customdata);
}
//this function only can used after the call of build_editform()
public function show_editform() {
$this->item_form->display();
}
public function is_cancelled() {
return $this->item_form->is_cancelled();
}
public function get_data() {
if ($this->item = $this->item_form->get_data()) {
return true;
}
return false;
}
public function save_item() {
global $DB;
if (!$item = $this->item_form->get_data()) {
return false;
}
if (isset($item->clone_item) AND $item->clone_item) {
$item->id = ''; //to clone this item
$item->position++;
}
$this->set_ignoreempty($item, $item->ignoreempty);
$this->set_hidenoselect($item, $item->hidenoselect);
$item->hasvalue = $this->get_hasvalue();
if (!$item->id) {
$item->id = $DB->insert_record('feedback_item', $item);
} else {
$DB->update_record('feedback_item', $item);
}
return $DB->get_record('feedback_item', array('id'=>$item->id));
}
//gets an array with three values(typ, name, XXX)
//XXX is an object with answertext, answercount and quotient
public function get_analysed($item, $groupid = false, $courseid = false) {
$analysed_item = array();
$analysed_item[] = $item->typ;
$analysed_item[] = $item->name;
//die moeglichen Antworten extrahieren
$info = $this->get_info($item);
$lines = null;
$lines = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
if (!is_array($lines)) {
return null;
}
//die Werte holen
$values = feedback_get_group_values($item, $groupid, $courseid, $this->ignoreempty($item));
if (!$values) {
return null;
}
//schleife ueber den Werten und ueber die Antwortmoeglichkeiten
$analysed_answer = array();
$sizeoflines = count($lines);
for ($i = 1; $i <= $sizeoflines; $i++) {
$item_values = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $lines[$i-1]);
$ans = new stdClass();
$ans->answertext = $item_values[1];
$avg = 0.0;
$anscount = 0;
foreach ($values as $value) {
//ist die Antwort gleich dem index der Antworten + 1?
if ($value->value == $i) {
$avg += $item_values[0]; //erst alle Werte aufsummieren
$anscount++;
}
}
$ans->answercount = $anscount;
$ans->avg = doubleval($avg) / doubleval(count($values));
$ans->value = $item_values[0];
$ans->quotient = $ans->answercount / count($values);
$analysed_answer[] = $ans;
}
$analysed_item[] = $analysed_answer;
return $analysed_item;
}
public function get_printval($item, $value) {
$printval = '';
if (!isset($value->value)) {
return $printval;
}
$info = $this->get_info($item);
$presentation = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
$index = 1;
foreach ($presentation as $pres) {
if ($value->value == $index) {
$item_label = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $pres);
$printval = $item_label[1];
break;
}
$index++;
}
return $printval;
}
public function print_analysed($item, $itemnr = '', $groupid = false, $courseid = false) {
global $OUTPUT;
$sep_dec = get_string('separator_decimal', 'feedback');
if (substr($sep_dec, 0, 2) == '[[') {
$sep_dec = FEEDBACK_DECIMAL;
}
$sep_thous = get_string('separator_thousand', 'feedback');
if (substr($sep_thous, 0, 2) == '[[') {
$sep_thous = FEEDBACK_THOUSAND;
}
$analysed_item = $this->get_analysed($item, $groupid, $courseid);
if ($analysed_item) {
echo '<tr><th colspan="2" align="left">';
echo $itemnr.'&nbsp;('.$item->label.') '.$analysed_item[1];
echo '</th></tr>';
$analysed_vals = $analysed_item[2];
$pixnr = 0;
$avg = 0.0;
foreach ($analysed_vals as $val) {
$intvalue = $pixnr % 10;
$pix = $OUTPUT->pix_url('multichoice/' . $intvalue, 'feedback');
$pixnr++;
$pixwidth = intval($val->quotient * FEEDBACK_MAX_PIX_LENGTH);
$avg += $val->avg;
$quotient = number_format(($val->quotient * 100), 2, $sep_dec, $sep_thous);
echo '<tr>';
echo '<td align="left" valign="top">';
echo '-&nbsp;&nbsp;'.trim($val->answertext).' ('.$val->value.'):</td>';
echo '<td align="left" style="width: '.FEEDBACK_MAX_PIX_LENGTH.'">';
echo '<img alt="'.$intvalue.'" src="'.$pix.'" height="5" width="'.$pixwidth.'" />';
echo $val->answercount;
if ($val->quotient > 0) {
echo '&nbsp;('.$quotient.'&nbsp;%)';
} else {
echo '';
}
echo '</td></tr>';
}
$avg = number_format(($avg), 2, $sep_dec, $sep_thous);
echo '<tr><td align="left" colspan="2"><b>';
echo get_string('average', 'feedback').': '.$avg.'</b>';
echo '</td></tr>';
}
}
public function excelprint_item(&$worksheet, $row_offset,
$xls_formats, $item,
$groupid, $courseid = false) {
$analysed_item = $this->get_analysed($item, $groupid, $courseid);
$data = $analysed_item[2];
//write the item
$worksheet->write_string($row_offset, 0, $item->label, $xls_formats->head2);
$worksheet->write_string($row_offset, 1, $analysed_item[1], $xls_formats->head2);
if (is_array($data)) {
$avg = 0.0;
$sizeofdata = count($data);
for ($i = 0; $i < $sizeofdata; $i++) {
$analysed_data = $data[$i];
$worksheet->write_string($row_offset,
$i + 2,
trim($analysed_data->answertext).' ('.$analysed_data->value.')',
$xls_formats->value_bold);
$worksheet->write_number($row_offset + 1,
$i + 2,
$analysed_data->answercount,
$xls_formats->default);
$avg += $analysed_data->avg;
}
//mittelwert anzeigen
$worksheet->write_string($row_offset,
count($data) + 2,
get_string('average', 'feedback'),
$xls_formats->value_bold);
$worksheet->write_number($row_offset + 1,
count($data) + 2,
$avg,
$xls_formats->value_bold);
}
$row_offset +=2;
return $row_offset;
}
/**
* print the item at the edit-page of feedback
*
* @global object
* @param object $item
* @return void
*/
public function print_item_preview($item) {
global $OUTPUT, $DB;
$align = right_to_left() ? 'right' : 'left';
$info = $this->get_info($item);
$str_required_mark = '<span class="feedback_required_mark">*</span>';
$lines = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
$requiredmark = ($item->required == 1) ? $str_required_mark : '';
//print the question and label
echo '<div class="feedback_item_label_'.$align.'">';
echo '('.$item->label.') ';
echo format_text($item->name.$requiredmark, true, false, false);
if ($item->dependitem) {
if ($dependitem = $DB->get_record('feedback_item', array('id'=>$item->dependitem))) {
echo ' <span class="feedback_depend">';
echo '('.$dependitem->label.'-&gt;'.$item->dependvalue.')';
echo '</span>';
}
}
echo '</div>';
//print the presentation
echo '<div class="feedback_item_presentation_'.$align.'">';
switch($info->subtype) {
case 'r':
$this->print_item_radio($item, false, $info, $align, true, $lines);
break;
case 'd':
$this->print_item_dropdown($item, false, $info, $align, true, $lines);
break;
}
echo '</div>';
}
/**
* print the item at the complete-page of feedback
*
* @global object
* @param object $item
* @param string $value
* @param bool $highlightrequire
* @return void
*/
public function print_item_complete($item, $value = '', $highlightrequire = false) {
global $OUTPUT;
$align = right_to_left() ? 'right' : 'left';
$info = $this->get_info($item);
$str_required_mark = '<span class="feedback_required_mark">*</span>';
$lines = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
$requiredmark = ($item->required == 1) ? $str_required_mark : '';
if ($highlightrequire AND $item->required AND intval($value) <= 0) {
$highlight = ' missingrequire';
} else {
$highlight = '';
}
//print the question and label
echo '<div class="feedback_item_label_'.$align.$highlight.'">';
echo format_text($item->name.$requiredmark, true, false, false);
echo '</div>';
//print the presentation
echo '<div class="feedback_item_presentation_'.$align.$highlight.'">';
switch($info->subtype) {
case 'r':
$this->print_item_radio($item, $value, $info, $align, false, $lines);
break;
case 'd':
$this->print_item_dropdown($item, $value, $info, $align, false, $lines);
break;
}
echo '</div>';
}
/**
* print the item at the complete-page of feedback
*
* @global object
* @param object $item
* @param string $value
* @return void
*/
public function print_item_show_value($item, $value = '') {
global $OUTPUT;
$align = right_to_left() ? 'right' : 'left';
$info = $this->get_info($item);
$lines = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
$requiredmark = ($item->required == 1)?'<span class="feedback_required_mark">*</span>':'';
//print the question and label
echo '<div class="feedback_item_label_'.$align.'">';
echo '('.$item->label.') ';
echo format_text($item->name . $requiredmark, true, false, false);
echo '</div>';
//print the presentation
echo '<div class="feedback_item_presentation_'.$align.'">';
$index = 1;
foreach ($lines as $line) {
if ($value == $index) {
$item_value = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $line);
echo $OUTPUT->box_start('generalbox boxalign'.$align);
echo text_to_html($item_value[1], true, false, false);
echo $OUTPUT->box_end();
break;
}
$index++;
}
echo '</div>';
}
public function check_value($value, $item) {
if ((!isset($value) OR $value == '' OR $value == 0) AND $item->required != 1) {
return true;
}
if (intval($value) > 0) {
return true;
}
return false;
}
public function create_value($data) {
$data = trim($data);
return $data;
}
//compares the dbvalue with the dependvalue
//dbvalue is the number of one selection
//dependvalue is the presentation of one selection
public function compare_value($item, $dbvalue, $dependvalue) {
if (is_array($dbvalue)) {
$dbvalues = $dbvalue;
} else {
$dbvalues = explode(FEEDBACK_MULTICHOICERATED_LINE_SEP, $dbvalue);
}
$info = $this->get_info($item);
$presentation = explode (FEEDBACK_MULTICHOICERATED_LINE_SEP, $info->presentation);
$index = 1;
foreach ($presentation as $pres) {
$presvalues = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $pres);
foreach ($dbvalues as $dbval) {
if ($dbval == $index AND trim($presvalues[1]) == $dependvalue) {
return true;
}
}
$index++;
}
return false;
}
public function get_presentation($data) {
$present = $this->prepare_presentation_values_save(trim($data->itemvalues),
FEEDBACK_MULTICHOICERATED_VALUE_SEP2,
FEEDBACK_MULTICHOICERATED_VALUE_SEP);
if (!isset($data->subtype)) {
$subtype = 'r';
} else {
$subtype = substr($data->subtype, 0, 1);
}
if (isset($data->horizontal) AND $data->horizontal == 1 AND $subtype != 'd') {
$present .= FEEDBACK_MULTICHOICERATED_ADJUST_SEP.'1';
}
return $subtype.FEEDBACK_MULTICHOICERATED_TYPE_SEP.$present;
}
public function get_hasvalue() {
return 1;
}
public function get_info($item) {
$presentation = empty($item->presentation) ? '' : $item->presentation;
$info = new stdClass();
//check the subtype of the multichoice
//it can be check(c), radio(r) or dropdown(d)
$info->subtype = '';
$info->presentation = '';
$info->horizontal = false;
$parts = explode(FEEDBACK_MULTICHOICERATED_TYPE_SEP, $item->presentation);
@list($info->subtype, $info->presentation) = $parts;
if (!isset($info->subtype)) {
$info->subtype = 'r';
}
if ($info->subtype != 'd') {
$parts = explode(FEEDBACK_MULTICHOICERATED_ADJUST_SEP, $info->presentation);
@list($info->presentation, $info->horizontal) = $parts;
if (isset($info->horizontal) AND $info->horizontal == 1) {
$info->horizontal = true;
} else {
$info->horizontal = false;
}
}
$info->values = $this->prepare_presentation_values_print($info->presentation,
FEEDBACK_MULTICHOICERATED_VALUE_SEP,
FEEDBACK_MULTICHOICERATED_VALUE_SEP2);
return $info;
}
private function print_item_radio($item, $value, $info, $align, $showrating, $lines) {
$index = 1;
$checked = '';
if ($info->horizontal) {
$hv = 'h';
} else {
$hv = 'v';
}
echo '<ul>';
if (!$this->hidenoselect($item)) {
?>
<li class="feedback_item_radio_<?php echo $hv.'_'.$align;?>">
<span class="feedback_item_radio_<?php echo $hv.'_'.$align;?>">
<?php
echo '<input type="radio" '.
'name="'.$item->typ.'_'.$item->id.'" '.
'id="'.$item->typ.'_'.$item->id.'_xxx" '.
'value="" checked="checked" />';
?>
</span>
<span class="feedback_item_radiolabel_<?php echo $hv.'_'.$align;?>">
<label for="<?php echo $item->typ . '_' . $item->id.'_xxx';?>">
<?php print_string('not_selected', 'feedback');?>&nbsp;
</label>
</span>
</li>
<?php
}
foreach ($lines as $line) {
if ($value == $index) {
$checked = 'checked="checked"';
} else {
$checked = '';
}
$radio_value = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $line);
$inputname = $item->typ . '_' . $item->id;
$inputid = $inputname.'_'.$index;
?>
<li class="feedback_item_radio_<?php echo $hv.'_'.$align;?>">
<span class="feedback_item_radio_<?php echo $hv.'_'.$align;?>">
<?php
echo '<input type="radio" '.
'name="'.$inputname.'" '.
'id="'.$inputid.'" '.
'value="'.$index.'" '.$checked.' />';
?>
</span>
<span class="feedback_item_radiolabel_<?php echo $hv.'_'.$align;?>">
<label for="<?php echo $inputid;?>">
<?php
if ($showrating) {
$str_rating_value = '('.$radio_value[0].') '.$radio_value[1];
echo text_to_html($str_rating_value, true, false, false);
} else {
echo text_to_html($radio_value[1], true, false, false);
}
?>
</label>
</span>
</li>
<?php
$index++;
}
echo '</ul>';
}
private function print_item_dropdown($item, $value, $info, $align, $showrating, $lines) {
if ($info->horizontal) {
$hv = 'h';
} else {
$hv = 'v';
}
echo '<ul>';
?>
<li class="feedback_item_select_<?php echo $hv.'_'.$align;?>">
<label class="accesshide" for="<?php echo $item->typ.'_'.$item->id;?>"><?php echo $item->name; ?></label>
<select id="<?php echo $item->typ.'_'.$item->id;?>" name="<?php echo $item->typ.'_'.$item->id;?>">
<option value="0">&nbsp;</option>
<?php
$index = 1;
$checked = '';
foreach ($lines as $line) {
if ($value == $index) {
$selected = 'selected="selected"';
} else {
$selected = '';
}
$dropdown_value = explode(FEEDBACK_MULTICHOICERATED_VALUE_SEP, $line);
if ($showrating) {
echo '<option value="'.$index.'" '.$selected.'>';
echo clean_text('('.$dropdown_value[0].') '.$dropdown_value[1]);
echo '</option>';
} else {
echo '<option value="'.$index.'" '.$selected.'>';
echo clean_text($dropdown_value[1]);
echo '</option>';
}
$index++;
}
?>
</select>
</li>
<?php
echo '</ul>';
}
public function prepare_presentation_values($linesep1,
$linesep2,
$valuestring,
$valuesep1,
$valuesep2) {
$lines = explode($linesep1, $valuestring);
$newlines = array();
foreach ($lines as $line) {
$value = '';
$text = '';
if (strpos($line, $valuesep1) === false) {
$value = 0;
$text = $line;
} else {
@list($value, $text) = explode($valuesep1, $line, 2);
}
$value = intval($value);
$newlines[] = $value.$valuesep2.$text;
}
$newlines = implode($linesep2, $newlines);
return $newlines;
}
public function prepare_presentation_values_print($valuestring, $valuesep1, $valuesep2) {
return $this->prepare_presentation_values(FEEDBACK_MULTICHOICERATED_LINE_SEP,
"\n",
$valuestring,
$valuesep1,
$valuesep2);
}
public function prepare_presentation_values_save($valuestring, $valuesep1, $valuesep2) {
return $this->prepare_presentation_values("\n",
FEEDBACK_MULTICHOICERATED_LINE_SEP,
$valuestring,
$valuesep1,
$valuesep2);
}
public function set_ignoreempty($item, $ignoreempty=true) {
$item->options = str_replace(FEEDBACK_MULTICHOICERATED_IGNOREEMPTY, '', $item->options);
if ($ignoreempty) {
$item->options .= FEEDBACK_MULTICHOICERATED_IGNOREEMPTY;
}
}
public function ignoreempty($item) {
if (strstr($item->options, FEEDBACK_MULTICHOICERATED_IGNOREEMPTY)) {
return true;
}
return false;
}
public function set_hidenoselect($item, $hidenoselect=true) {
$item->options = str_replace(FEEDBACK_MULTICHOICERATED_HIDENOSELECT, '', $item->options);
if ($hidenoselect) {
$item->options .= FEEDBACK_MULTICHOICERATED_HIDENOSELECT;
}
}
public function hidenoselect($item) {
if (strstr($item->options, FEEDBACK_MULTICHOICERATED_HIDENOSELECT)) {
return true;
}
return false;
}
public function can_switch_require() {
return true;
}
public function value_type() {
return PARAM_INT;
}
public function clean_input_value($value) {
return clean_param($value, $this->value_type());
}
}
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