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renderer.php
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renderer.php
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<?php
///////////////////////////////////////////////////////////////////////////
// //
// This file is part of Moodle - http://moodle.org/ //
// Moodle - Modular Object-Oriented Dynamic Learning Environment //
// //
// 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/>. //
// //
///////////////////////////////////////////////////////////////////////////
/**
* 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 {
/**
* 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', $params->default).html_writer::end_tag('b');
}
if ($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 <pre> 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 . " ";
$brakeline = <<<EOF
EOF;
/// description object is a list
if ($returndescription instanceof external_multiple_structure) {
$return = $indentation."<MULTIPLE>".$brakeline;
$return .= $this->description_in_indented_xml_format($returndescription->content, $indentation);
$return .= $indentation."</MULTIPLE>".$brakeline;
return $return;
} else if ($returndescription instanceof external_single_structure) {
/// description object is an object
$singlestructuredesc = $indentation."<SINGLE>".$brakeline;
$keyindentation = $indentation." ";
foreach ($returndescription->keys as $attributname => $attribut) {
$singlestructuredesc .= $keyindentation."<KEY name=\"".$attributname."\">".$brakeline.
$this->description_in_indented_xml_format($returndescription->keys[$attributname], $keyindentation).
$keyindentation."</KEY>".$brakeline;
}
$singlestructuredesc .= $indentation."</SINGLE>".$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 $indentation."<VALUE>".$type."</VALUE>".$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 . " ";
$brakeline = <<<EOF
EOF;
/// description object is a list
if ($paramdescription instanceof external_multiple_structure) {
$return = $brakeline.$indentation."Array ";
$indentation = $indentation . " ";
$return .= $brakeline.$indentation."(";
$return .= $brakeline.$indentation."[0] =>";
$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 $rgb - the background color of the box
* @return <type>
*/
public function colored_box_with_pre_tag($title, $content, $rgb = 'FEEBE5') {
$coloredbox = html_writer::start_tag('ins', array()); //TODO: this tag removes xhtml strict error but cause warning
$coloredbox .= html_writer::start_tag('div', array('style' => "border:solid 1px #DEDEDE;background:#".$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('ins', 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) {
$brakeline = <<<EOF
EOF;
/// description object is a list
if ($paramdescription instanceof external_multiple_structure) {
$paramstring = $paramstring.'[0]';
$return = $this->rest_param_description_html($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 are either 'username'/'password' or 'token'
* @param boolean $printableformat true if we want to display the documentation in a printable format
* @param array $activatedprotocol
* @return string the html to diplay
*/
public function documentation_html($functions, $printableformat, $activatedprotocol, $authparams) {
global $OUTPUT, $CFG;
$br = html_writer::empty_tag('br', array());
$brakeline = <<<EOF
EOF;
/// Some general information
$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', $authparams['wsusername']);
$documentationhtml .= $br.$br;
/// Print button
$authparams['print'] = true;
//$parameters = array ('token' => $token, 'wsusername' => $username, 'wspassword' => $password, 'print' => true);
$url = new moodle_url('/webservice/wsdoc.php', $authparams); // Required
$documentationhtml .= $OUTPUT->single_button($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 = $paramdesc->default;
}
$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'])) {
$restresponse = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>".$brakeline."<RESPONSE>".$brakeline;
$restresponse .= $this->description_in_indented_xml_format($description->returns_desc);
$restresponse .="</RESPONSE>".$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');
$restexceptiontext =<<<EOF
<?xml version="1.0" encoding="UTF-8"?>
<EXCEPTION class="invalid_parameter_exception">
<MESSAGE>{$errormessage}</MESSAGE>
<DEBUGINFO></DEBUGINFO>
</EXCEPTION>
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;
}
/**
* Return the login page html
* @param string $errormessage - the error message to display
* @return string the html to diplay
*/
public function login_page_html($errormessage) {
global $CFG, $OUTPUT;
$br = html_writer::empty_tag('br', array());
$htmlloginpage = html_writer::start_tag('table', array('style' => "margin-left:auto; margin-right:auto;"));
$htmlloginpage .= html_writer::start_tag('tr', array());
$htmlloginpage .= html_writer::start_tag('td', array());
// /// Display detailed error message when can't login
// $htmlloginpage .= get_string('error','webservice',$errormessage);
// $htmlloginpage .= html_writer::empty_tag('br', array());
// $htmlloginpage .= html_writer::empty_tag('br', array());
//login form - we cannot use moodle form as we don't have sessionkey
$target = new moodle_url('/webservice/wsdoc.php', array()); // Required
$contents = get_string('entertoken', 'webservice');
$contents .= $br.$br;
$contents .= html_writer::empty_tag('input', array('type'=>'text', 'name'=>'token', 'style'=>'width: 30em;'));
$contents .= $br.$br;
$contents .= get_string('wsdocumentationlogin', 'webservice');
$contents .= $br.$br;
$contents .= html_writer::empty_tag('input', array('type'=>'text', 'name'=>'wsusername', 'style'=>'width: 30em;', 'value'=>get_string('wsusername', 'webservice')));
$contents .= $br.$br;
$contents .= html_writer::empty_tag('input', array('type'=>'text', 'name'=>'wspassword', 'style'=>'width: 30em;', 'value'=>get_string('wspassword', 'webservice')));
$contents .= $br.$br;
$contents .= html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'submit', 'value'=>get_string('wsdocumentation', 'webservice')));
$htmlloginpage .= html_writer::tag('form', "<div>$contents</div>", array('method'=>'post', 'target'=>$target));
$htmlloginpage .= html_writer::end_tag('td');
$htmlloginpage .= html_writer::end_tag('tr');
$htmlloginpage .= html_writer::end_tag('table');
return $htmlloginpage;
}
}