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/>.

/**

 * Lets the user define and edit roles.

 *

 * Responds to actions:

 *   [blank]   - list roles.

 *   delete    - delete a role (with are-you-sure)

 *   moveup    - change the sort order

 *   movedown  - change the sort order

 *

 * For all but the first two of those, you also need a roleid parameter, and

 * possibly some other data.

 *

 * @package    core_role

 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)

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

 */

require_once(__DIR__ . '/../../config.php');

require_once($CFG->libdir.'/adminlib.php');

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

$action = optional_param('action', '', PARAM_ALPHA);

if ($action) {

    $roleid = required_param('roleid', PARAM_INT);

} else {

    $roleid = 0;

}

// Get the base URL for this and related pages into a convenient variable.

$baseurl = $CFG->wwwroot . '/' . $CFG->admin . '/roles/manage.php';

$defineurl = $CFG->wwwroot . '/' . $CFG->admin . '/roles/define.php';

admin_externalpage_setup('defineroles');

// Check access permissions.

$systemcontext = context_system::instance();

require_capability('moodle/role:manage', $systemcontext);

// Get some basic data we are going to need.

$roles = role_fix_names(get_all_roles(), $systemcontext, ROLENAME_ORIGINAL);

$undeletableroles = array();

$undeletableroles[$CFG->notloggedinroleid] = 1;

$undeletableroles[$CFG->guestroleid] = 1;

$undeletableroles[$CFG->defaultuserroleid] = 1;

$PAGE->set_primary_active_tab('siteadminnode');

$PAGE->navbar->add(get_string('defineroles', 'role'), $PAGE->url);

// Process submitted data.

$confirmed = (optional_param('confirm', false, PARAM_BOOL) && data_submitted() && confirm_sesskey());

switch ($action) {

    case 'delete':

        if (isset($undeletableroles[$roleid])) {

            throw new \moodle_exception('cannotdeletethisrole', '', $baseurl);

        }

        if (!$confirmed) {

            // Show confirmation.

            echo $OUTPUT->header();

            $optionsyes = array('action'=>'delete', 'roleid'=>$roleid, 'sesskey'=>sesskey(), 'confirm'=>1);

            $a = new stdClass();

            $a->id = $roleid;

            $a->name = $roles[$roleid]->localname;

            $a->shortname = $roles[$roleid]->shortname;

            $a->count = $DB->count_records_select('role_assignments',

                'roleid = ?', array($roleid), 'COUNT(DISTINCT userid)');

            $formcontinue = new single_button(new moodle_url($baseurl, $optionsyes), get_string('yes'));

            $formcancel = new single_button(new moodle_url($baseurl), get_string('no'), 'get');

            echo $OUTPUT->confirm(get_string('deleterolesure', 'core_role', $a), $formcontinue, $formcancel);

            echo $OUTPUT->footer();

            die;

        }

        if (!delete_role($roleid)) {

            // The delete failed.

            throw new \moodle_exception('cannotdeleterolewithid', 'error', $baseurl, $roleid);

        }

        // Deleted a role sitewide...

        redirect($baseurl);

        break;

    case 'moveup':

        if (confirm_sesskey()) {

            $prevrole = null;

            $thisrole = null;

            foreach ($roles as $role) {

                if ($role->id == $roleid) {

                    $thisrole = $role;

                    break;

                } else {

                    $prevrole = $role;

                }

            }

            if (is_null($thisrole) || is_null($prevrole)) {

                throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);

            }

            if (!switch_roles($thisrole, $prevrole)) {

                throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);

            }

        }

        redirect($baseurl);

        break;

    case 'movedown':

        if (confirm_sesskey()) {

            $thisrole = null;

            $nextrole = null;

            foreach ($roles as $role) {

                if ($role->id == $roleid) {

                    $thisrole = $role;

                } else if (!is_null($thisrole)) {

                    $nextrole = $role;

                    break;

                }

            }

            if (is_null($nextrole)) {

                throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);

            }

            if (!switch_roles($thisrole, $nextrole)) {

                throw new \moodle_exception('cannotmoverolewithid', 'error', '', $roleid);

            }

        }

        redirect($baseurl);

        break;

}

// Print the page header and tabs.

echo $OUTPUT->header();

$currenttab = 'manage';

require('managetabs.php');

// Initialise table.

$table = new html_table();

$table->colclasses = array('leftalign', 'leftalign', 'leftalign', 'leftalign');

$table->id = 'roles';

$table->attributes['class'] = 'admintable generaltable';

$table->head = array(

    get_string('role') . ' ' . $OUTPUT->help_icon('roles', 'core_role'),

    get_string('description'),

    get_string('roleshortname', 'core_role'),

    get_string('edit')

);

// Get some strings outside the loop.

$stredit = get_string('edit');

$strdelete = get_string('delete');

$strmoveup = get_string('moveup');

$strmovedown = get_string('movedown');

// Print a list of roles with edit/copy/delete/reorder icons.

$table->data = array();

$firstrole = reset($roles);

$lastrole = end($roles);

foreach ($roles as $role) {

    // Basic data.

    $row = array(

        '<a href="' . $defineurl . '?action=view&amp;roleid=' . $role->id . '">' . $role->localname . '</a>',

        role_get_description($role),

        s($role->shortname),

        '',

    );

    // Move up.

    if ($role->sortorder != $firstrole->sortorder) {

        $row[3] .= get_action_icon($baseurl . '?action=moveup&roleid=' . $role->id . '&sesskey=' . sesskey(), 'up', $strmoveup, $strmoveup);

    } else {

        $row[3] .= get_spacer();

    }

    // Move down.

    if ($role->sortorder != $lastrole->sortorder) {

        $row[3] .= get_action_icon($baseurl . '?action=movedown&roleid=' . $role->id . '&sesskey=' . sesskey(), 'down', $strmovedown, $strmovedown);

    } else {

        $row[3] .= get_spacer();

    }

    // Edit.

    $row[3] .= get_action_icon($defineurl . '?action=edit&roleid=' . $role->id,

            'edit', $stredit, get_string('editxrole', 'core_role', $role->localname));

    // Delete.

    if (isset($undeletableroles[$role->id])) {

        $row[3] .= get_spacer();

    } else {

        $row[3] .= get_action_icon($baseurl . '?action=delete&roleid=' . $role->id,

              'delete', $strdelete, get_string('deletexrole', 'core_role', $role->localname));

    }

    $table->data[] = $row;

}

echo html_writer::table($table);

echo $OUTPUT->container_start('buttons');

echo $OUTPUT->single_button(new moodle_url($defineurl, array('action' => 'add')), get_string('addrole', 'core_role'), 'get');

echo $OUTPUT->container_end();

echo $OUTPUT->footer();

die;

function get_action_icon($url, $icon, $alt, $tooltip) {

    global $OUTPUT;

    return '<a title="' . $tooltip . '" href="'. $url . '">' .

            $OUTPUT->pix_icon('t/' . $icon, $alt) . '</a> ';

}

function get_spacer() {

    global $OUTPUT;

    return $OUTPUT->spacer();

}