renderer.php

<?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/>.

/**
 * sphinx question renderer class.
 *
 * @package    qtype
 * @subpackage sphinx
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


defined('MOODLE_INTERNAL') || die();


/**
 * Generates the output for sphinx questions.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qtype_sphinx_renderer extends qtype_renderer {
    public function formulation_and_controls(question_attempt $qa, question_display_options $options) {

        $question = $qa->get_question();

        if (empty($options->readonly)) {
            $files = $this->files_input($qa, $options);
        } else {
            $files = $this->files_read_only($qa, $options);
        }

        $result = '';
        $result .= html_writer::tag('div', $question->format_questiontext($qa), array('class' => 'qtext'));

        $result .= html_writer::start_tag('div', array('class' => 'ablock'));
        $result .= html_writer::tag('div', $files, array('class' => 'attachments'));
        $result .= html_writer::end_tag('div');

        return $result;
    }

    /**
     * Displays any attached files when the question is in read-only mode.
     * @param question_attempt $qa the question attempt to display.
     * @param question_display_options $options controls what should and should
     *      not be displayed. Used to get the context.
     * @return string the html.
     */
    public function files_read_only(question_attempt $qa, question_display_options $options) {
        $files = $qa->get_last_qt_files('attachments', $options->context->id);
        $output = array();

        foreach ($files as $file) {
            $output[] = html_writer::tag('p', html_writer::link($qa->get_response_file_url($file),
                    $this->output->pix_icon(file_file_icon($file), get_mimetype_description($file),
                    'moodle', array('class' => 'icon')) . ' ' . s($file->get_filename())));
        }
        return implode($output);
    }

    /**
     * Displays the input control for when the student should upload a single file.
     * @param question_attempt $qa the question attempt to display.
     * @param question_display_options $options controls what should and should
     *      not be displayed. Used to get the context.
     * @return string the html.
     */
    public function files_input(question_attempt $qa, question_display_options $options) {
        global $CFG;
        require_once($CFG->dirroot . '/lib/form/filemanager.php');

        $pickeroptions = new stdClass();
        $pickeroptions->mainfile = null;
        $pickeroptions->maxfiles = 1;
        $pickeroptions->itemid = $qa->prepare_response_files_draft_itemid('attachments', $options->context->id);
        $pickeroptions->context = $options->context;
        $pickeroptions->return_types = FILE_INTERNAL;

        $pickeroptions->itemid = $qa->prepare_response_files_draft_itemid('attachments', $options->context->id);

        $fm = new form_filemanager($pickeroptions);
        $filesrenderer = $this->page->get_renderer('core', 'files');
        return $filesrenderer->render($fm). html_writer::empty_tag(
                'input', array('type' => 'hidden', 'name' => $qa->get_qt_field_name('attachments'),
                'value' => $pickeroptions->itemid));
    }
}