/**
* @desc Prints the question. Calls question_webwork_derived, and prints out the html associated with derivedid.
* @param $question object The question object to print.
* @param $state object The state of the responses for the question.
* @param $cmoptions object Options containing course ID.
* @param $options object
*/
function print_question_formulation_and_controls(&$question, &$state, $cmoptions, $options)
{
global $CFG, $USER;
$readonly = empty($options->readonly) ? '' : 'disabled="disabled"';
//Formulate question image and text
$questiontext = $this->format_text($question->questiontext, $question->questiontextformat, $cmoptions);
$image = get_question_image($question, $cmoptions->course);
$derivationid = $state->responses['derivationid'];
$derivation = get_record('question_webwork_derived', 'id', $derivationid);
$unparsedhtml = base64_decode($derivation->html);
//partial answers
$showPartiallyCorrectAnswers = $question->grading;
//new array keyed by field
$fieldhash = $state->responses['answers'];
$answerfields = array();
$parser = new HtmlParser($unparsedhtml);
$currentselect = "";
while ($parser->parse()) {
//change some attributes of html tags for moodle compliance
if ($parser->iNodeType == NODE_TYPE_ELEMENT) {
$nodename = $parser->iNodeName;
$name = $parser->iNodeAttributes['name'];
//handle generic change of node's attribute name
if ($nodename == "INPUT" || $nodename == "SELECT" || $nodename == "TEXTAREA") {
$parser->iNodeAttributes['name'] = 'resp' . $question->id . '_' . $name;
if ($state->event == QUESTION_EVENTGRADE && isset($fieldhash[$name])) {
if ($showPartiallyCorrectAnswers) {
$parser->iNodeAttributes['class'] = $parser->iNodeAttributes['class'] . ' ' . question_get_feedback_class($fieldhash[$name]['score']);
}
}
if (!strstr($name, 'previous')) {
$answerfields[$name] = $fieldhash[$name];
}
}
//handle specific change
if ($nodename == "INPUT") {
//put submitted value into field
if (isset($fieldhash[$name])) {
$parser->iNodeAttributes['value'] = $fieldhash[$name]['answer'];
}
} else {
if ($nodename == "SELECT") {
$currentselect = $name;
} else {
if ($nodename == "OPTION") {
if ($parser->iNodeAttributes['value'] == $fieldhash[$currentselect]['answer']) {
$parser->iNodeAttributes['selected'] = '1';
}
} else {
if ($nodename == "TEXTAREA") {
}
}
}
}
}
$problemhtml .= $parser->printTag();
}
//for the seed form field
$qid = $question->id;
$seed = $state->responses['seed'];
//if the student has answered
include "{$CFG->dirroot}/question/type/webwork/display.html";
}
/**
* @desc Generates the HTML for a particular question.
* @param integer $seed The seed of the question.
* @param array $answers An array of answers that needs to be rendered.
* @param object $event The event object.
* @return string The HTML question representation.
*/
public function render($seed, &$answers, $event)
{
//JIT Derivation creation
//Usually we have this from the check answers call
if (!isset($this->_derivation)) {
$client = WebworkClient::Get();
$env = WebworkQuestion::DefaultEnvironment();
$env->problemSeed = $seed;
$result = $client->renderProblem($env, $this->_data->code);
$derivation = new stdClass();
$derivation->html = base64_decode($result->output);
$derivation->seed = $result->seed;
$this->_derivation = $derivation;
}
$orderedanswers = array();
$tempanswers = array();
foreach ($answers as $answer) {
$tempanswers[$answer->field] = $answer;
}
$answers = $tempanswers;
$showpartialanswers = $this->_data->grading;
$questionhtml = "";
$parser = new HtmlParser($this->_derivation->html);
$currentselect = "";
$textarea = false;
$checkboxes = array();
while ($parser->parse()) {
//change some attributes of html tags for moodle compliance
if ($parser->iNodeType == NODE_TYPE_ELEMENT) {
$nodename = $parser->iNodeName;
if (isset($parser->iNodeAttributes['name'])) {
$name = $parser->iNodeAttributes['name'];
}
//handle generic change of node's attribute name
if ($nodename == "INPUT" || $nodename == "SELECT" || $nodename == "TEXTAREA") {
$parser->iNodeAttributes['name'] = 'resp' . $this->_data->question . '_' . $name;
if ($event == QUESTION_EVENTGRADE && isset($answers[$name])) {
if ($showpartialanswers) {
if (isset($parser->iNodeAttributes['class'])) {
$class = $parser->iNodeAttributes['class'];
} else {
$class = "";
}
$parser->iNodeAttributes['class'] = $class . ' ' . question_get_feedback_class($answers[$name]->score);
}
}
}
//handle specific change
if ($nodename == "INPUT") {
$nodetype = strtoupper($parser->iNodeAttributes['type']);
if ($nodetype == "CHECKBOX") {
if (strstr($answers[$name]->answer, $parser->iNodeAttributes['value'])) {
//FILLING IN ANSWER (CHECKBOX)
array_push($orderedanswers, $answers[$name]);
$parser->iNodeAttributes['checked'] = '1';
}
$parser->iNodeAttributes['name'] = $parser->iNodeAttributes['name'] . '_' . $parser->iNodeAttributes['value'];
} else {
if ($nodetype == "TEXT") {
if (isset($answers[$name])) {
//FILLING IN ANSWER (FIELD)
array_push($orderedanswers, $answers[$name]);
$parser->iNodeAttributes['value'] = $answers[$name]->answer;
}
}
}
} else {
if ($nodename == "SELECT") {
$currentselect = $name;
} else {
if ($nodename == "OPTION") {
if ($parser->iNodeAttributes['value'] == $answers[$currentselect]->answer) {
//FILLING IN ANSWER (DROPDOWN)
array_push($orderedanswers, $answers[$currentselect]);
$parser->iNodeAttributes['selected'] = '1';
}
} else {
if ($nodename == "TEXTAREA") {
if (isset($answers[$name])) {
array_push($orderedanswers, $answers[$name]);
$textarea = true;
$questionhtml .= $parser->printTag();
$questionhtml .= $answers[$name]->answer;
}
}
}
}
}
}
if (!$textarea) {
$questionhtml .= $parser->printTag();
} else {
$textarea = false;
}
}
$answers = $orderedanswers;
return $questionhtml;
}
/**
* @desc Parses a derivation record. This changes all paths of external entities. Copies all external entities to local data folder.
* @param object $derivation The derivation object.
* @return bool true.
*/
function webwork_parse_change_derivation(&$derivation)
{
//webwork question id
$wwquestionid = $derivation->question_webwork;
//assign paths
$wwquestioncopyto = webwork_get_wwquestion_path_full($wwquestionid);
$wwquestionreplacer = webwork_get_wwquestion_url($wwquestionid);
$derivationcopyto = webwork_get_derivation_path_full($wwquestionid, $derivation->id);
$derivationreplacer = webwork_get_derivation_url($wwquestionid, $derivation->id);
$parsedhtml = "";
$html = base64_decode($derivation->html);
$parser = new HtmlParser($html);
while ($parser->parse()) {
if ($parser->iNodeType == NODE_TYPE_ELEMENT) {
$nodename = $parser->iNodeName;
if (strcasecmp($nodename, 'img') == 0) {
//image, path fixing
if (isset($parser->iNodeAttributes['src'])) {
$src = $parser->iNodeAttributes['src'];
if (!(strstr($src, '/tmp/') == false)) {
//image produced by the server
$srccapture = strrchr($src, '/');
webwork_copy_file($src, $derivationcopyto . $srccapture);
$parser->iNodeAttributes['src'] = $derivationreplacer . $srccapture;
}
}
} else {
if (strcasecmp($nodename, 'a') == 0) {
//hyperlink, path fixing
if (isset($parser->iNodeAttributes['href'])) {
$href = $parser->iNodeAttributes['href'];
$hrefcapture = strrchr($href, '/');
webwork_copy_file($href, $derivationcopyto . $hrefcapture);
$parser->iNodeAttributes['href'] = $derivationreplacer . $hrefcapture;
}
}
}
}
$parsedhtml .= $parser->printTag();
}
$derivation->html = base64_encode($parsedhtml);
return true;
}
