Proyectos de Subversion Moodle

<?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/>.

/**

 * This plugin is used to access coursefiles repository

 *

 * @since Moodle 2.0

 * @package    repository_coursefiles

 * @copyright  2010 Dongsheng Cai {@link http://dongsheng.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once($CFG->dirroot . '/repository/lib.php');

/**

 * repository_coursefiles class is used to browse course files

 *

 * @since Moodle 2.0

 * @package    repository_coursefiles

 * @copyright  2010 Dongsheng Cai {@link http://dongsheng.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class repository_coursefiles extends repository {

    /**

     * coursefiles plugin doesn't require login, so list all files

     *

     * @return mixed

     */

    public function print_login() {

        return $this->get_listing();

    }

    /**

     * Get file listing

     *

     * @param string $encodedpath

     * @return mixed

     */

    public function get_listing($encodedpath = '', $page = '') {

        global $CFG, $USER, $OUTPUT;

        $ret = array();

        $ret['dynload'] = true;

        $ret['nosearch'] = true;

        $ret['nologin'] = true;

        $list = array();

        $component = 'course';

        $filearea  = 'legacy';

        $itemid = 0;

        $browser = get_file_browser();

        if (!empty($encodedpath)) {

            $params = json_decode(base64_decode($encodedpath), true);

            if (is_array($params)) {

                $filepath  = is_null($params['filepath']) ? NULL : clean_param($params['filepath'], PARAM_PATH);

                $filename  = is_null($params['filename']) ? NULL : clean_param($params['filename'], PARAM_FILE);

                $context = context::instance_by_id(clean_param($params['contextid'], PARAM_INT));

            }

        } else {

            $filename = null;

            $filepath = null;

            list($context, $course, $cm) = get_context_info_array($this->context->id);

            $courseid = is_object($course) ? $course->id : SITEID;

            $context = context_course::instance($courseid);

        }

        if ($fileinfo = $browser->get_file_info($context, $component, $filearea, $itemid, $filepath, $filename)) {

            // build path navigation

            $pathnodes = array();

            $encodedpath = base64_encode(json_encode($fileinfo->get_params()));

            $pathnodes[] = array('name'=>$fileinfo->get_visible_name(), 'path'=>$encodedpath);

            $level = $fileinfo->get_parent();

            while ($level) {

                $params = $level->get_params();

                $encodedpath = base64_encode(json_encode($params));

                if ($params['contextid'] != $context->id) {

                    break;

                }

                $pathnodes[] = array('name'=>$level->get_visible_name(), 'path'=>$encodedpath);

                $level = $level->get_parent();

            }

            if (!empty($pathnodes) && is_array($pathnodes)) {

                $pathnodes = array_reverse($pathnodes);

                $ret['path'] = $pathnodes;

            }

            // build file tree

            $children = $fileinfo->get_children();

            foreach ($children as $child) {

                if ($child->is_directory()) {

                    $params = $child->get_params();

                    $subdir_children = $child->get_children();

                    $encodedpath = base64_encode(json_encode($params));

                    $node = array(

                        'title' => $child->get_visible_name(),

                        'datemodified' => $child->get_timemodified(),

                        'datecreated' => $child->get_timecreated(),

                        'path' => $encodedpath,

                        'children'=>array(),

                        'thumbnail' => $OUTPUT->image_url(file_folder_icon())->out(false)

                    );

                    $list[] = $node;

                } else {

                    $encodedpath = base64_encode(json_encode($child->get_params()));

                    $node = array(

                        'title' => $child->get_visible_name(),

                        'size' => $child->get_filesize(),

                        'author' => $child->get_author(),

                        'license' => $child->get_license(),

                        'datemodified' => $child->get_timemodified(),

                        'datecreated' => $child->get_timecreated(),

                        'source'=> $encodedpath,

                        'isref' => $child->is_external_file(),

                        'thumbnail' => $OUTPUT->image_url(file_file_icon($child))->out(false)

                    );

                    if ($child->get_status() == 666) {

                        $node['originalmissing'] = true;

                    }

                    if ($imageinfo = $child->get_imageinfo()) {

                        $fileurl = new moodle_url($child->get_url());

                        $node['realthumbnail'] = $fileurl->out(false, array('preview' => 'thumb', 'oid' => $child->get_timemodified()));

                        $node['realicon'] = $fileurl->out(false, array('preview' => 'tinyicon', 'oid' => $child->get_timemodified()));

                        $node['image_width'] = $imageinfo['width'];

                        $node['image_height'] = $imageinfo['height'];

                    }

                    $list[] = $node;

                }

            }

        } else {

            $list = array();

        }

        $ret['list'] = array_filter($list, array($this, 'filter'));

        return $ret;

    }

    public function get_link($encoded) {

        $info = array();

        $browser = get_file_browser();

        // the final file

        $params = unserialize(base64_decode($encoded));

        $contextid  = clean_param($params['contextid'], PARAM_INT);

        $fileitemid = clean_param($params['itemid'], PARAM_INT);

        $filename = clean_param($params['filename'], PARAM_FILE);

        $filepath = clean_param($params['filepath'], PARAM_PATH);

        $filearea = clean_param($params['filearea'], PARAM_AREA);

        $component = clean_param($params['component'], PARAM_COMPONENT);

        $context = context::instance_by_id($contextid);

        $file_info = $browser->get_file_info($context, $component, $filearea, $fileitemid, $filepath, $filename);

        return $file_info->get_url();

    }

    /**

     * Return is the instance is visible

     * (is the type visible ? is the context enable ?)

     *

     * @return boolean

     */

    public function is_visible() {

        global $COURSE; //TODO: this is deprecated (skodak)

        if ($COURSE->legacyfiles != 2) {

            // do not show repo if legacy files disabled in this course...

            return false;

        }

        return parent::is_visible();

    }

    /**

     * Return the repository name.

     *

     * @return string

     */

    public function get_name() {

        $context = $this->context->get_course_context(false);

        if ($context) {

            return get_string('courselegacyfilesofcourse', 'moodle', $context->get_context_name(false, true));

        } else {

            return get_string('courselegacyfiles');

        }

    }

    public function supported_returntypes() {

        return (FILE_INTERNAL | FILE_REFERENCE);

    }

    public static function get_type_option_names() {

        return array();

    }

    /**

     * Does this repository used to browse moodle files?

     *

     * @return boolean

     */

    public function has_moodle_files() {

        return true;

    }

    /**

     * Is this repository accessing private data?

     *

     * @return bool

     */

    public function contains_private_data() {

        return false;

    }

}