. // // // /////////////////////////////////////////////////////////////////////////// /** * Web service documentation renderer. * @package webservice * @copyright 2009 Moodle Pty Ltd (http://moodle.com) * @author Jerome Mouneyrac * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class core_webservice_renderer extends plugin_renderer_base { /** * Display the authorised user selector * @param object $options * @return string html */ public function admin_authorised_user_selector(&$options) { global $CFG; $formcontent = html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden')); $table = new html_table(); $table->size = array('45%', '10%', '45%'); $table->attributes['class'] = 'roleassigntable generaltable generalbox boxaligncenter'; $table->summary = ''; $table->cellspacing = 0; $table->cellpadding = 0; // LTR/RTL support, for drawing button arrows in the right direction if (right_to_left()) { $addarrow = '▶'; $removearrow = '◀'; } else { $addarrow = '◀'; $removearrow = '▶'; } //create the add and remove button $addinput = html_writer::empty_tag('input', array('name' => 'add', 'id' => 'add', 'type' => 'submit', 'value' => $addarrow . ' ' . get_string('add'), 'title' => get_string('add'))); $addbutton = html_writer::tag('div', $addinput, array('id' => 'addcontrols')); $removeinput = html_writer::empty_tag('input', array('name' => 'remove', 'id' => 'remove', 'type' => 'submit', 'value' => $removearrow . ' ' . get_string('remove'), 'title' => get_string('remove'))); $removebutton = html_writer::tag('div', $removeinput, array('id' => 'removecontrols')); //create the three cells $label = html_writer::tag('label', get_string('serviceusers', 'webservice'), array('for' => 'removeselect')); $label = html_writer::tag('p', $label); $authoriseduserscell = new html_table_cell($label . $options->alloweduserselector->display(true)); $authoriseduserscell->id = 'existingcell'; $buttonscell = new html_table_cell($addbutton . html_writer::empty_tag('br') . $removebutton); $buttonscell->id = 'buttonscell'; $label = html_writer::tag('label', get_string('potusers', 'webservice'), array('for' => 'addselect')); $label = html_writer::tag('p', $label); $otheruserscell = new html_table_cell($label . $options->potentialuserselector->display(true)); $otheruserscell->id = 'potentialcell'; $cells = array($authoriseduserscell, $buttonscell, $otheruserscell); $row = new html_table_row($cells); $table->data[] = $row; $formcontent .= html_writer::table($table); $formcontent = html_writer::tag('div', $formcontent); $actionurl = new moodle_url('/' . $CFG->admin . '/webservice/service_users.php', array('id' => $options->serviceid)); $html = html_writer::tag('form', $formcontent, array('id' => 'assignform', 'action' => $actionurl, 'method' => 'post')); return $html; } /** * Display list of authorised user * @param array $users * @return string $html */ public function admin_authorised_user_list($users, $serviceid) { global $CFG; $html = $this->output->box_start('generalbox', 'alloweduserlist'); foreach ($users as $user) { $modifiedauthoriseduserurl = new moodle_url('/' . $CFG->admin . '/webservice/service_user_settings.php', array('userid' => $user->id, 'serviceid' => $serviceid)); $html .= html_writer::tag('a', $user->firstname . " " . $user->lastname . ", " . $user->email, array('href' => $modifiedauthoriseduserurl)); //add missing capabilities if (!empty($user->missingcapabilities)) { $html .= html_writer::tag('div', get_string('usermissingcaps', 'webservice', $user->missingcapabilities) . ' ' . $this->output->help_icon('missingcaps', 'webservice'), array('class' => 'missingcaps', 'id' => 'usermissingcaps')); $html .= html_writer::empty_tag('br'); } else { $html .= html_writer::empty_tag('br') . html_writer::empty_tag('br'); } } $html .= $this->output->box_end(); return $html; } /** * Display a confirmation page to remove a function from a service * @param object $function * @param object $service * @return string html */ public function admin_remove_service_function_confirmation($function, $service) { $optionsyes = array('id' => $service->id, 'action' => 'delete', 'confirm' => 1, 'sesskey' => sesskey(), 'fid' => $function->id); $optionsno = array('id' => $service->id); $formcontinue = new single_button(new moodle_url('service_functions.php', $optionsyes), get_string('remove')); $formcancel = new single_button(new moodle_url('service_functions.php', $optionsno), get_string('cancel'), 'get'); return $this->output->confirm(get_string('removefunctionconfirm', 'webservice', (object) array('service' => $service->name, 'function' => $function->name)), $formcontinue, $formcancel); } /** * Display a confirmation page to remove a service * @param object $service * @return string html */ public function admin_remove_service_confirmation($service) { global $CFG; $optionsyes = array('id' => $service->id, 'action' => 'delete', 'confirm' => 1, 'sesskey' => sesskey()); $optionsno = array('section' => 'externalservices'); $formcontinue = new single_button(new moodle_url('service.php', $optionsyes), get_string('delete'), 'post'); $formcancel = new single_button( new moodle_url($CFG->wwwroot . "/" . $CFG->admin . "/settings.php", $optionsno), get_string('cancel'), 'get'); return $this->output->confirm(get_string('deleteserviceconfirm', 'webservice', $service->name), $formcontinue, $formcancel); } /** * Display a confirmation page to delete a token * @param object $token * @return string html */ public function admin_delete_token_confirmation($token) { global $CFG; $optionsyes = array('tokenid' => $token->id, 'action' => 'delete', 'confirm' => 1, 'sesskey' => sesskey()); $optionsno = array('section' => 'webservicetokens', 'sesskey' => sesskey()); $formcontinue = new single_button( new moodle_url('/' . $CFG->admin . '/webservice/tokens.php', $optionsyes), get_string('delete')); $formcancel = new single_button( new moodle_url('/' . $CFG->admin . '/settings.php', $optionsno), get_string('cancel'), 'get'); return $this->output->confirm(get_string('deletetokenconfirm', 'webservice', (object) array('user' => $token->firstname . " " . $token->lastname, 'service' => $token->name)), $formcontinue, $formcancel); } /** * Display list of function for a given service * If the service is build-in do not display remove/add operation (read-only) * @param array $functions * @param object $service * @return string the table html + add operation html */ public function admin_service_function_list($functions, $service) { global $CFG; if (!empty($functions)) { $table = new html_table(); $table->head = array(get_string('function', 'webservice'), get_string('description'), get_string('requiredcaps', 'webservice')); $table->align = array('left', 'left', 'left'); $table->size = array('15%', '40%', '40%'); $table->width = '100%'; $table->align[] = 'left'; //display remove function operation (except for build-in service) if (empty($service->component)) { $table->head[] = get_string('edit'); $table->align[] = 'center'; } foreach ($functions as $function) { $function = external_function_info($function); $requiredcaps = html_writer::tag('div', empty($function->capabilities) ? '' : $function->capabilities, array('class' => 'functiondesc')); ; $description = html_writer::tag('div', $function->description, array('class' => 'functiondesc')); //display remove function operation (except for build-in service) if (empty($service->component)) { $removeurl = new moodle_url('/' . $CFG->admin . '/webservice/service_functions.php', array('sesskey' => sesskey(), 'fid' => $function->id, 'id' => $service->id, 'action' => 'delete')); $removelink = html_writer::tag('a', get_string('removefunction', 'webservice'), array('href' => $removeurl)); $table->data[] = array($function->name, $description, $requiredcaps, $removelink); } else { $table->data[] = array($function->name, $description, $requiredcaps); } } $html = html_writer::table($table); } else { $html = get_string('nofunctions', 'webservice') . html_writer::empty_tag('br'); } //display add function operation (except for build-in service) if (empty($service->component)) { $addurl = new moodle_url('/' . $CFG->admin . '/webservice/service_functions.php', array('sesskey' => sesskey(), 'id' => $service->id, 'action' => 'add')); $html .= html_writer::tag('a', get_string('addfunctions', 'webservice'), array('href' => $addurl)); } return $html; } /** * Display Reset token confirmation box * @param object $token to reset * @return string html */ public function user_reset_token_confirmation($token) { global $CFG; $managetokenurl = $CFG->wwwroot . "/user/managetoken.php?sesskey=" . sesskey(); $optionsyes = array('tokenid' => $token->id, 'action' => 'resetwstoken', 'confirm' => 1, 'sesskey' => sesskey()); $optionsno = array('section' => 'webservicetokens', 'sesskey' => sesskey()); $formcontinue = new single_button(new moodle_url($managetokenurl, $optionsyes), get_string('reset')); $formcancel = new single_button(new moodle_url($managetokenurl, $optionsno), get_string('cancel'), 'get'); $html = $this->output->confirm(get_string('resettokenconfirm', 'webservice', (object) array('user' => $token->firstname . " " . $token->lastname, 'service' => $token->name)), $formcontinue, $formcancel); return $html; } /** * Display user tokens with buttons to reset them * @param object $tokens * @param int $userid * @return string html code */ public function user_webservice_tokens_box($tokens, $userid, $documentation = false) { global $CFG, $DB; // display strings $stroperation = get_string('operation', 'webservice'); $strtoken = get_string('key', 'webservice'); $strservice = get_string('service', 'webservice'); $strcreator = get_string('tokencreator', 'webservice'); $strcontext = get_string('context', 'webservice'); $strvaliduntil = get_string('validuntil', 'webservice'); $return = $this->output->heading(get_string('securitykeys', 'webservice'), 3, 'main', true); $return .= $this->output->box_start('generalbox webservicestokenui'); $return .= get_string('keyshelp', 'webservice'); $table = new html_table(); $table->head = array($strtoken, $strservice, $strvaliduntil, $strcreator, $stroperation); $table->align = array('left', 'left', 'left', 'center', 'left', 'center'); $table->width = '100%'; $table->data = array(); if ($documentation) { $table->head[] = get_string('doc', 'webservice'); $table->align[] = 'center'; } if (!empty($tokens)) { foreach ($tokens as $token) { if ($token->creatorid == $userid) { $reset = "wwwroot . "/user/managetoken.php?sesskey=" . sesskey() . "&action=resetwstoken&tokenid=" . $token->id . "\">"; $reset .= get_string('reset') . ""; $creator = $token->firstname . " " . $token->lastname; } else { //retrieve administrator name $admincreator = $DB->get_record('user', array('id'=>$token->creatorid)); $creator = $admincreator->firstname . " " . $admincreator->lastname; $reset = ''; } $userprofilurl = new moodle_url('/user/view.php?id=' . $token->creatorid); $creatoratag = html_writer::start_tag('a', array('href' => $userprofilurl)); $creatoratag .= $creator; $creatoratag .= html_writer::end_tag('a'); $validuntil = ''; if (!empty($token->validuntil)) { $validuntil = date("F j, Y"); //TODO: language support (look for moodle function) } $tokenname = $token->name; if (!$token->enabled) { //that is the (1 token-1ws) related ws is not enabled. $tokenname = ''.$token->name.''; } $row = array($token->token, $tokenname, $validuntil, $creatoratag, $reset); if ($documentation) { $doclink = new moodle_url('/webservice/wsdoc.php', array('id' => $token->id, 'sesskey' => sesskey())); $row[] = html_writer::tag('a', get_string('doc', 'webservice'), array('href' => $doclink)); } $table->data[] = $row; } $return .= html_writer::table($table); } else { $return .= get_string('notoken', 'webservice'); } $return .= $this->output->box_end(); return $return; } /** * Return documentation for a ws description object * ws description object can be 'external_multiple_structure', 'external_single_structure' * or 'external_value' * Example of documentation for moodle_group_create_groups function: list of ( object { courseid int //id of course name string //multilang compatible name, course unique description string //group description text enrolmentkey string //group enrol secret phrase } ) * @param object $params a part of parameter/return description * @return string the html to display */ public function detailed_description_html($params) { /// retrieve the description of the description object $paramdesc = ""; if (!empty($params->desc)) { $paramdesc .= html_writer::start_tag('span', array('style' => "color:#2A33A6")); if ($params->required == VALUE_REQUIRED) { $required = ''; } if ($params->required == VALUE_DEFAULT) { if ($params->default === null) { $params->default = "null"; } $required = html_writer::start_tag('b', array()) . get_string('default', 'webservice', print_r($params->default, true)) . html_writer::end_tag('b'); } if ($params->required == VALUE_OPTIONAL) { $required = html_writer::start_tag('b', array()) . get_string('optional', 'webservice') . html_writer::end_tag('b'); } $paramdesc .= " " . $required . " "; $paramdesc .= html_writer::start_tag('i', array()); $paramdesc .= "//"; $paramdesc .= $params->desc; $paramdesc .= html_writer::end_tag('i'); $paramdesc .= html_writer::end_tag('span'); $paramdesc .= html_writer::empty_tag('br', array()); } /// description object is a list if ($params instanceof external_multiple_structure) { return $paramdesc . "list of ( " . html_writer::empty_tag('br', array()) . $this->detailed_description_html($params->content) . ")"; } else if ($params instanceof external_single_structure) { /// description object is an object $singlestructuredesc = $paramdesc . "object {" . html_writer::empty_tag('br', array()); foreach ($params->keys as $attributname => $attribut) { $singlestructuredesc .= html_writer::start_tag('b', array()); $singlestructuredesc .= $attributname; $singlestructuredesc .= html_writer::end_tag('b'); $singlestructuredesc .= " " . $this->detailed_description_html($params->keys[$attributname]); } $singlestructuredesc .= "} "; $singlestructuredesc .= html_writer::empty_tag('br', array()); return $singlestructuredesc; } else { /// description object is a primary type (string, integer) switch ($params->type) { case PARAM_BOOL: // 0 or 1 only for now case PARAM_INT: $type = 'int'; break; case PARAM_FLOAT; $type = 'double'; break; default: $type = 'string'; } return $type . " " . $paramdesc; } } /** * Return a description object in indented xml format (for REST response) * It is indented in order to be displayed into
 tag
     * @param object $returndescription
     * @param string $indentation composed by space only
     * @return string the html to diplay
     */
    public function description_in_indented_xml_format($returndescription, $indentation = "") {
        $indentation = $indentation . "    ";
        $brakeline = <<" . $brakeline;
            $return .= $this->description_in_indented_xml_format($returndescription->content,
                            $indentation);
            $return .= $indentation . "" . $brakeline;
            return $return;
        } else if ($returndescription instanceof external_single_structure) {
            /// description object is an object
            $singlestructuredesc = $indentation . "" . $brakeline;
            $keyindentation = $indentation . "    ";
            foreach ($returndescription->keys as $attributname => $attribut) {
                $singlestructuredesc .= $keyindentation . ""
                        . $brakeline .
                        $this->description_in_indented_xml_format(
                                $returndescription->keys[$attributname], $keyindentation) .
                        $keyindentation . "" . $brakeline;
            }
            $singlestructuredesc .= $indentation . "" . $brakeline;
            return $singlestructuredesc;
        } else {
            /// description object is a primary type (string, integer)
            switch ($returndescription->type) {
                case PARAM_BOOL: // 0 or 1 only for now
                case PARAM_INT:
                    $type = 'int';
                    break;
                case PARAM_FLOAT;
                    $type = 'double';
                    break;
                default:
                    $type = 'string';
            }
            return $indentation . "" . $type . "" . $brakeline;
        }
    }

    /**
     * Create indented XML-RPC  param description
     * @param object $paramdescription
     * @param string $indentation composed by space only
     * @return string the html to diplay
     */
    public function xmlrpc_param_description_html($paramdescription, $indentation = "") {
        $indentation = $indentation . "    ";
        $brakeline = <<";
            $return .= $this->xmlrpc_param_description_html($paramdescription->content, $indentation);
            $return .= $brakeline . $indentation . ")";
            return $return;
        } else if ($paramdescription instanceof external_single_structure) {
            /// description object is an object
            $singlestructuredesc = $brakeline . $indentation . "Array ";
            $keyindentation = $indentation . "    ";
            $singlestructuredesc .= $brakeline . $keyindentation . "(";
            foreach ($paramdescription->keys as $attributname => $attribut) {
                $singlestructuredesc .= $brakeline . $keyindentation . "[" . $attributname . "] =>" .
                        $this->xmlrpc_param_description_html(
                                $paramdescription->keys[$attributname], $keyindentation) .
                        $keyindentation;
            }
            $singlestructuredesc .= $brakeline . $keyindentation . ")";
            return $singlestructuredesc;
        } else {
            /// description object is a primary type (string, integer)
            switch ($paramdescription->type) {
                case PARAM_BOOL: // 0 or 1 only for now
                case PARAM_INT:
                    $type = 'int';
                    break;
                case PARAM_FLOAT;
                    $type = 'double';
                    break;
                default:
                    $type = 'string';
            }
            return " " . $type;
        }
    }

    /**
     * Return the html of a colored box with content
     * @param string $title - the title of the box
     * @param string $content - the content to displayed
     * @param string $rgb - the background color of the box
     * @return 
     */
    public function colored_box_with_pre_tag($title, $content, $rgb = 'FEEBE5') {
        //TODO: this tag removes xhtml strict error but cause warning
        $coloredbox = html_writer::start_tag('div', array());
        $coloredbox .= html_writer::start_tag('div',
                        array('style' => "border:solid 1px #DEDEDE;background:#" . $rgb
                            . ";color:#222222;padding:4px;"));
        $coloredbox .= html_writer::start_tag('pre', array());
        $coloredbox .= html_writer::start_tag('b', array());
        $coloredbox .= $title;
        $coloredbox .= html_writer::end_tag('b', array());
        $coloredbox .= html_writer::empty_tag('br', array());
        $coloredbox .= "\n" . $content . "\n";
        $coloredbox .= html_writer::end_tag('pre', array());
        $coloredbox .= html_writer::end_tag('div', array());
        $coloredbox .= html_writer::end_tag('div', array());
        return $coloredbox;
    }

    /**
     * Return indented REST param description
     * @param object $paramdescription
     * @param string $indentation composed by space only
     * @return string the html to diplay
     */
    public function rest_param_description_html($paramdescription, $paramstring) {
        $brakeline = <<rest_param_description_html($paramdescription->content, $paramstring);
            return $return;
        } else if ($paramdescription instanceof external_single_structure) {
            /// description object is an object
            $singlestructuredesc = "";
            $initialparamstring = $paramstring;
            foreach ($paramdescription->keys as $attributname => $attribut) {
                $paramstring = $initialparamstring . '[' . $attributname . ']';
                $singlestructuredesc .= $this->rest_param_description_html(
                                $paramdescription->keys[$attributname], $paramstring);
            }
            return $singlestructuredesc;
        } else {
            /// description object is a primary type (string, integer)
            $paramstring = $paramstring . '=';
            switch ($paramdescription->type) {
                case PARAM_BOOL: // 0 or 1 only for now
                case PARAM_INT:
                    $type = 'int';
                    break;
                case PARAM_FLOAT;
                    $type = 'double';
                    break;
                default:
                    $type = 'string';
            }
            return $paramstring . " " . $type . $brakeline;
        }
    }

    /**
     * This display all the documentation
     * @param array $functions contains all decription objects
     * @param array $authparam keys contains 'tokenid'
     * @param boolean $printableformat true if we want to display the documentation in a printable format
     * @param array $activatedprotocol
     * @param string $parenturl url of the calling page - needed for the print button url:
     *               '/admin/documentation.php' or '/webservice/wsdoc.php' (default)
     * @return string the html to diplay
     */
    public function documentation_html($functions, $printableformat, $activatedprotocol,
            $authparams, $parenturl = '/webservice/wsdoc.php') {

        $documentationhtml = $this->output->heading(get_string('wsdocapi', 'webservice'));

        $br = html_writer::empty_tag('br', array());
        $brakeline = <<doclink = html_writer::tag('a',
                        get_string('wsclientdoc', 'webservice'), array('href' => $docurl));
        $documentationhtml .= html_writer::start_tag('table',
                        array('style' => "margin-left:auto; margin-right:auto;"));
        $documentationhtml .= html_writer::start_tag('tr', array());
        $documentationhtml .= html_writer::start_tag('td', array());
        $documentationhtml .= get_string('wsdocumentationintro', 'webservice', $docinfo);
        $documentationhtml .= $br . $br;


        /// Print button
        $authparams['print'] = true;
        //$parameters = array ('token' => $token, 'wsusername' => $username, 'wspassword' => $password, 'print' => true);
        $url = new moodle_url($parenturl, $authparams); // Required
        $documentationhtml .= $this->output->single_button($url, get_string('print', 'webservice'));
        $documentationhtml .= $br;


        /// each functions will be displayed into a collapsible region
        //(opened if printableformat = true)
        foreach ($functions as $functionname => $description) {

            if (empty($printableformat)) {
                $documentationhtml .= print_collapsible_region_start('',
                                'aera_' . $functionname,
                                html_writer::start_tag('strong', array())
                                . $functionname . html_writer::end_tag('strong'),
                                false,
                                !$printableformat,
                                true);
            } else {
                $documentationhtml .= html_writer::tag('strong', $functionname);
                $documentationhtml .= $br;
            }

            /// function global description
            $documentationhtml .= $br;
            $documentationhtml .= html_writer::start_tag('div',
                            array('style' => 'border:solid 1px #DEDEDE;background:#E2E0E0;
                        color:#222222;padding:4px;'));
            $documentationhtml .= $description->description;
            $documentationhtml .= html_writer::end_tag('div');
            $documentationhtml .= $br . $br;

            /// function arguments documentation
            $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
            $documentationhtml .= get_string('arguments', 'webservice');
            $documentationhtml .= html_writer::end_tag('span');
            $documentationhtml .= $br;
            foreach ($description->parameters_desc->keys as $paramname => $paramdesc) {
                /// a argument documentation
                $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));

                if ($paramdesc->required == VALUE_REQUIRED) {
                    $required = get_string('required', 'webservice');
                }
                if ($paramdesc->required == VALUE_DEFAULT) {
                    if ($paramdesc->default === null) {
                        $default = "null";
                    } else {
                        $default = print_r($paramdesc->default, true);
                    }
                    $required = get_string('default', 'webservice', $default);
                }
                if ($paramdesc->required == VALUE_OPTIONAL) {
                    $required = get_string('optional', 'webservice');
                }

                $documentationhtml .= html_writer::start_tag('b', array());
                $documentationhtml .= $paramname;
                $documentationhtml .= html_writer::end_tag('b');
                $documentationhtml .= " (" . $required . ")"; // argument is required or optional ?
                $documentationhtml .= $br;
                $documentationhtml .= "        "
                        . $paramdesc->desc; // argument description
                $documentationhtml .= $br . $br;
                ///general structure of the argument
                $documentationhtml .= $this->colored_box_with_pre_tag(
                                get_string('generalstructure', 'webservice'),
                                $this->detailed_description_html($paramdesc),
                                'FFF1BC');
                ///xml-rpc structure of the argument in PHP format
                if (!empty($activatedprotocol['xmlrpc'])) {
                    $documentationhtml .= $this->colored_box_with_pre_tag(
                                    get_string('phpparam', 'webservice'),
                                    htmlentities('[' . $paramname . '] =>'
                                            . $this->xmlrpc_param_description_html($paramdesc)),
                                    'DFEEE7');
                }
                ///POST format for the REST protocol for the argument
                if (!empty($activatedprotocol['rest'])) {
                    $documentationhtml .= $this->colored_box_with_pre_tag(
                                    get_string('restparam', 'webservice'),
                                    htmlentities($this->rest_param_description_html(
                                                    $paramdesc, $paramname)),
                                    'FEEBE5');
                }
                $documentationhtml .= html_writer::end_tag('span');
            }
            $documentationhtml .= $br . $br;


            /// function response documentation
            $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
            $documentationhtml .= get_string('response', 'webservice');
            $documentationhtml .= html_writer::end_tag('span');
            $documentationhtml .= $br;
            /// function response description
            $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));
            if (!empty($description->returns_desc->desc)) {
                $documentationhtml .= $description->returns_desc->desc;
                $documentationhtml .= $br . $br;
            }
            if (!empty($description->returns_desc)) {
                ///general structure of the response
                $documentationhtml .= $this->colored_box_with_pre_tag(
                                get_string('generalstructure', 'webservice'),
                                $this->detailed_description_html($description->returns_desc),
                                'FFF1BC');
                ///xml-rpc structure of the response in PHP format
                if (!empty($activatedprotocol['xmlrpc'])) {
                    $documentationhtml .= $this->colored_box_with_pre_tag(
                                    get_string('phpresponse', 'webservice'),
                                    htmlentities($this->xmlrpc_param_description_html(
                                                    $description->returns_desc)),
                                    'DFEEE7');
                }
                ///XML response for the REST protocol
                if (!empty($activatedprotocol['rest'])) {
                    $restresponse = ""
                            . $brakeline . "" . $brakeline;
                    $restresponse .= $this->description_in_indented_xml_format(
                                    $description->returns_desc);
                    $restresponse .="" . $brakeline;
                    $documentationhtml .= $this->colored_box_with_pre_tag(
                                    get_string('restcode', 'webservice'),
                                    htmlentities($restresponse),
                                    'FEEBE5');
                }
            }
            $documentationhtml .= html_writer::end_tag('span');
            $documentationhtml .= $br . $br;

            /// function errors documentation for REST protocol
            if (!empty($activatedprotocol['rest'])) {
                $documentationhtml .= html_writer::start_tag('span', array('style' => 'color:#EA33A6'));
                $documentationhtml .= get_string('errorcodes', 'webservice');
                $documentationhtml .= html_writer::end_tag('span');
                $documentationhtml .= $br . $br;
                $documentationhtml .= html_writer::start_tag('span', array('style' => 'font-size:80%'));
                $errormessage = get_string('invalidparameter', 'debug');
                $restexceptiontext = <<

    {$errormessage}
    

EOF;
                $documentationhtml .= $this->colored_box_with_pre_tag(
                                get_string('restexception', 'webservice'),
                                htmlentities($restexceptiontext),
                                'FEEBE5');

                $documentationhtml .= html_writer::end_tag('span');
            }
            $documentationhtml .= $br . $br;
            if (empty($printableformat)) {
                $documentationhtml .= print_collapsible_region_end(true);
            }
        }

        /// close the table and return the documentation
        $documentationhtml .= html_writer::end_tag('td');
        $documentationhtml .= html_writer::end_tag('tr');
        $documentationhtml .= html_writer::end_tag('table');

        return $documentationhtml;
    }

}