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/>.

/**

 * Capability tool renderer.

 *

 * @package    tool_capability

 * @copyright  2013 Sam Hemelryk

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

 */

/**

 * The primary renderer for the capability tool.

 *

 * @copyright  2013 Sam Hemelryk

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

 */

class tool_capability_renderer extends plugin_renderer_base {

    /**

     * Returns an array of permission strings.

     *

     * @return lang_string[]

     */

    protected function get_permission_strings() {

        static $strpermissions;

        if (!$strpermissions) {

            $strpermissions = array(

                CAP_INHERIT => new lang_string('inherit', 'role'),

                CAP_ALLOW => new lang_string('allow', 'role'),

                CAP_PREVENT => new lang_string('prevent', 'role'),

                CAP_PROHIBIT => new lang_string('prohibit', 'role')

            );

        }

        return $strpermissions;

    }

    /**

     * Returns an array of permission CSS classes.

     *

     * @return string[]

     */

    protected function get_permission_classes() {

        static $permissionclasses;

        if (!$permissionclasses) {

            $permissionclasses = array(

                CAP_INHERIT => 'inherit',

                CAP_ALLOW => 'allow',

                CAP_PREVENT => 'prevent',

                CAP_PROHIBIT => 'prohibit',

            );

        }

        return $permissionclasses;

    }

    /**

     * Produces a table to visually compare roles and capabilities.

     *

     * @param array $capabilities An array of capabilities to show comparison for.

     * @param int $contextid The context we are displaying for.

     * @param array $roles An array of roles to show comparison for.

     * @param bool $onlydiff show only different permissions

     * @return string

     */

    public function capability_comparison_table(array $capabilities, $contextid, array $roles, $onlydiff=false) {

        static $capabilitycontexts = array();

        $strpermissions = $this->get_permission_strings();

        $permissionclasses = $this->get_permission_classes();

        if ($contextid === context_system::instance()->id) {

            $strpermissions[CAP_INHERIT] = new lang_string('notset', 'role');

        }

        $table = new html_table();

        $table->attributes['class'] = 'comparisontable';

        $table->head = array(' ');

        foreach ($roles as $role) {

            $url = new moodle_url('/admin/roles/define.php', array('action' => 'view', 'roleid' => $role->id));

            $table->head[] = html_writer::div(html_writer::link($url, $role->localname));

        }

        $table->data = array();

        $childcontextsids = [];

        foreach ($capabilities as $capability) {

            if (empty($capabilitycontexts[$capability])) {

                $capabilitycontexts[$capability] = tool_capability_calculate_role_data($capability, $roles);

            }

            $contexts = $capabilitycontexts[$capability];

            $captitle = new html_table_cell(get_capability_string($capability) . html_writer::span($capability));

            $captitle->header = true;

            $row = new html_table_row(array($captitle));

            $permissiontypes = array();

            foreach ($roles as $role) {

                if (isset($contexts[$contextid]->rolecapabilities[$role->id])) {

                    $permission = $contexts[$contextid]->rolecapabilities[$role->id];

                } else {

                    $permission = CAP_INHERIT;

                }

                if (!in_array($permission, $permissiontypes)) {

                    $permissiontypes[] = $permission;

                }

                $cell = new html_table_cell($strpermissions[$permission]);

                $cell->attributes['class'] = $permissionclasses[$permission];

                $row->cells[] = $cell;

            }

            if (!$onlydiff || count($permissiontypes) > 1) {

                $table->data[] = $row;

            }

            if (!empty($contexts[$contextid]->children)) {

                $childcontextsids = array_merge($childcontextsids, $contexts[$contextid]->children);

                $childcontextsids = array_unique($childcontextsids);

            }

        }

        // Start the list item, and print the context name as a link to the place to make changes.

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

        if ($context instanceof context_system) {

            $url = new moodle_url('/admin/roles/manage.php');

        } else {

            $url = new moodle_url('/admin/roles/permissions.php', ['contextid' => $contextid]);

        }

        $title = get_string('permissionsincontext', 'core_role', $context->get_context_name());

        $html = $this->output->heading(html_writer::link($url, $title), 3);

        if (!empty($table->data)) {

            $html .= html_writer::table($table);

        } else {

            $html .= html_writer::tag('p', get_string('nodifferences', 'tool_capability'));

        }

        // If there are any child contexts, print them recursively.

        if (!empty($childcontextsids)) {

            foreach ($childcontextsids as $childcontextid) {

                $html .= $this->capability_comparison_table($capabilities, $childcontextid, $roles, $onlydiff);

            }

        }

        return $html;

    }

}