/**
* Displays the input control for when the student should upload a single file.
* @param question_attempt $qa the question attempt to display.
* @param int $numallowed the maximum number of attachments allowed. -1 = unlimited.
* @param question_display_options $options controls what should and should
* not be displayed. Used to get the context.
*/
public function files_input(question_attempt $qa, $numallowed, question_display_options $options)
{
global $CFG;
require_once $CFG->dirroot . '/lib/form/filemanager.php';
$pickeroptions = new stdClass();
$pickeroptions->mainfile = null;
$pickeroptions->maxfiles = $numallowed;
$pickeroptions->itemid = $qa->prepare_response_files_draft_itemid('attachments', $options->context->id);
$pickeroptions->context = $options->context;
$pickeroptions->itemid = $qa->prepare_response_files_draft_itemid('attachments', $options->context->id);
return form_filemanager_render($pickeroptions) . html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $qa->get_qt_field_name('attachments'), 'value' => $pickeroptions->itemid));
}
/**
* Returns HTML for filemanager form element.
*
* @return string
*/
function toHtml()
{
global $CFG, $USER, $COURSE, $PAGE, $OUTPUT;
require_once "{$CFG->dirroot}/repository/lib.php";
// security - never ever allow guest/not logged in user to upload anything or use this element!
if (isguestuser() or !isloggedin()) {
print_error('noguest');
}
if ($this->_flagFrozen) {
return $this->getFrozenHtml();
}
$id = $this->_attributes['id'];
$elname = $this->_attributes['name'];
$subdirs = $this->_options['subdirs'];
$maxbytes = $this->_options['maxbytes'];
$draftitemid = $this->getValue();
$accepted_types = $this->_options['accepted_types'];
if (empty($draftitemid)) {
// no existing area info provided - let's use fresh new draft area
require_once "{$CFG->libdir}/filelib.php";
$this->setValue(file_get_unused_draft_itemid());
$draftitemid = $this->getValue();
}
$client_id = uniqid();
// filemanager options
$options = new stdClass();
$options->mainfile = $this->_options['mainfile'];
$options->maxbytes = $this->_options['maxbytes'];
$options->maxfiles = $this->getMaxfiles();
$options->client_id = $client_id;
$options->itemid = $draftitemid;
$options->subdirs = $this->_options['subdirs'];
$options->target = $id;
$options->accepted_types = $accepted_types;
$options->return_types = FILE_INTERNAL;
$options->context = $PAGE->context;
$html = $this->_getTabs();
$html .= form_filemanager_render($options);
$html .= '<input value="' . $draftitemid . '" name="' . $elname . '" type="hidden" />';
// label element needs 'for' attribute work
$html .= '<input value="" id="id_' . $elname . '" type="hidden" />';
return $html;
}
