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lib.php
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lib.php
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<?php //$Id$
///////////////////////////////////////////////////////////////////////////
// //
// NOTICE OF COPYRIGHT //
// //
// Moodle - Modular Object-Oriented Dynamic Learning Environment //
// http://moodle.com //
// //
// Copyright (C) 1999 onwards Martin Dougiamas http://moodle.com //
// //
// This program 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 2 of the License, or //
// (at your option) any later version. //
// //
// This program 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: //
// //
// http://www.gnu.org/copyleft/gpl.html //
// //
///////////////////////////////////////////////////////////////////////////
require_once $CFG->libdir.'/gradelib.php';
/**
* This class iterates over all users that are graded in a course.
* Returns detailed info about users and their grades.
*/
class graded_users_iterator {
public $course;
public $grade_items;
public $groupid;
public $users_rs;
public $grades_rs;
public $gradestack;
public $sortfield1;
public $sortorder1;
public $sortfield2;
public $sortorder2;
/**
* Constructor
* @param $course object
* @param array grade_items array of grade items, if not specified only user info returned
* @param int $groupid iterate only group users if present
* @param string $sortfield1 The first field of the users table by which the array of users will be sorted
* @param string $sortorder1 The order in which the first sorting field will be sorted (ASC or DESC)
* @param string $sortfield2 The second field of the users table by which the array of users will be sorted
* @param string $sortorder2 The order in which the second sorting field will be sorted (ASC or DESC)
*/
public function graded_users_iterator($course, $grade_items=null, $groupid=0, $sortfield1='lastname', $sortorder1='ASC', $sortfield2='firstname', $sortorder2='ASC') {
$this->course = $course;
$this->grade_items = $grade_items;
$this->groupid = $groupid;
$this->sortfield1 = $sortfield1;
$this->sortorder1 = $sortorder1;
$this->sortfield2 = $sortfield2;
$this->sortorder2 = $sortorder2;
$this->gradestack = array();
}
/**
* Initialise the iterator
* @return boolean success
*/
public function init() {
global $CFG, $DB;
$this->close();
grade_regrade_final_grades($this->course->id);
$course_item = grade_item::fetch_course_item($this->course->id);
if ($course_item->needsupdate) {
// can not calculate all final grades - sorry
return false;
}
list($gradebookroles_sql, $params) = $DB->get_in_or_equal(explode(',', $CFG->gradebookroles), SQL_PARAMS_NAMED, 'grbr0');
$relatedcontexts = get_related_contexts_string(get_context_instance(CONTEXT_COURSE, $this->course->id));
if ($this->groupid) {
$groupsql = "INNER JOIN {groups_members} gm ON gm.userid = u.id";
$groupwheresql = "AND gm.groupid = :groupid";
// $params contents: gradebookroles
$params['groupid'] = $this->groupid;
} else {
$groupsql = "";
$groupwheresql = "";
}
if (empty($this->sortfield1)) {
// we must do some sorting even if not specified
$ofields = ", u.id AS usrt";
$order = "usrt ASC";
} else {
$ofields = ", u.$this->sortfield1 AS usrt1";
$order = "usrt1 $this->sortorder1";
if (!empty($this->sortfield2)) {
$ofields .= ", u.$this->sortfield1 AS usrt2";
$order .= ", usrt2 $this->sortorder2";
}
if ($this->sortfield1 != 'id' and $this->sortfield2 != 'id') {
// user order MUST be the same in both queries, must include the only unique user->id if not already present
$ofields .= ", u.id AS usrt";
$order .= ", usrt ASC";
}
}
// $params contents: gradebookroles and groupid (for $groupwheresql)
$users_sql = "SELECT u.* $ofields
FROM {user} u
INNER JOIN {role_assignments} ra ON u.id = ra.userid
$groupsql
WHERE ra.roleid $gradebookroles_sql
AND ra.contextid $relatedcontexts
$groupwheresql
ORDER BY $order";
$this->users_rs = $DB->get_recordset_sql($users_sql, $params);
if (!empty($this->grade_items)) {
$itemids = array_keys($this->grade_items);
list($itemidsql, $grades_params) = $DB->get_in_or_equal($itemids, SQL_PARAMS_NAMED, 'items0');
$params = array_merge($params, $grades_params);
// $params contents: gradebookroles, groupid (for $groupwheresql) and itemids
$grades_sql = "SELECT g.* $ofields
FROM {grade_grades} g
INNER JOIN {user} u ON g.userid = u.id
INNER JOIN {role_assignments} ra ON u.id = ra.userid
$groupsql
WHERE ra.roleid $gradebookroles_sql
AND ra.contextid $relatedcontexts
$groupwheresql
AND g.itemid $itemidsql
ORDER BY $order, g.itemid ASC";
$this->grades_rs = $DB->get_recordset_sql($grades_sql, $params);
} else {
$this->grades_rs = false;
}
return true;
}
/**
* Returns information about the next user
* @return mixed array of user info, all grades and feedback or null when no more users found
*/
function next_user() {
if (!$this->users_rs) {
return false; // no users present
}
if (!$this->users_rs->valid()) {
if ($current = $this->_pop()) {
// this is not good - user or grades updated between the two reads above :-(
}
return false; // no more users
} else {
$user = $this->users_rs->current();
$this->users_rs->next();
}
// find grades of this user
$grade_records = array();
while (true) {
if (!$current = $this->_pop()) {
break; // no more grades
}
if (empty($current->userid)) {
break;
}
if ($current->userid != $user->id) {
// grade of the next user, we have all for this user
$this->_push($current);
break;
}
$grade_records[$current->itemid] = $current;
}
$grades = array();
$feedbacks = array();
if (!empty($this->grade_items)) {
foreach ($this->grade_items as $grade_item) {
if (array_key_exists($grade_item->id, $grade_records)) {
$feedbacks[$grade_item->id]->feedback = $grade_records[$grade_item->id]->feedback;
$feedbacks[$grade_item->id]->feedbackformat = $grade_records[$grade_item->id]->feedbackformat;
unset($grade_records[$grade_item->id]->feedback);
unset($grade_records[$grade_item->id]->feedbackformat);
$grades[$grade_item->id] = new grade_grade($grade_records[$grade_item->id], false);
} else {
$feedbacks[$grade_item->id]->feedback = '';
$feedbacks[$grade_item->id]->feedbackformat = FORMAT_MOODLE;
$grades[$grade_item->id] = new grade_grade(array('userid'=>$user->id, 'itemid'=>$grade_item->id), false);
}
}
}
$result = new object();
$result->user = $user;
$result->grades = $grades;
$result->feedbacks = $feedbacks;
return $result;
}
/**
* Close the iterator, do not forget to call this function.
* @return void
*/
function close() {
if ($this->users_rs) {
$this->users_rs->close();
$this->users_rs = null;
}
if ($this->grades_rs) {
$this->grades_rs->close();
$this->grades_rs = null;
}
$this->gradestack = array();
}
/**
* Internal function
*/
function _push($grade) {
array_push($this->gradestack, $grade);
}
/**
* Internal function
*/
function _pop() {
global $DB;
if (empty($this->gradestack)) {
if (!$this->grades_rs) {
return NULL; // no grades present
}
if ($this->grades_rs->next()) {
return NULL; // no more grades
}
return $this->grades_rs->current();
} else {
return array_pop($this->gradestack);
}
}
}
/**
* Print a selection popup form of the graded users in a course.
*
* @param int $courseid id of the course
* @param string $actionpage The page receiving the data from the popoup form
* @param int $userid id of the currently selected user (or 'all' if they are all selected)
* @param bool $return If true, will return the HTML, otherwise, will print directly
* @return null
*/
function print_graded_users_selector($course, $actionpage, $userid=null, $return=false) {
global $CFG, $USER;
if (is_null($userid)) {
$userid = $USER->id;
}
$context = get_context_instance(CONTEXT_COURSE, $course->id);
$menu = array(); // Will be a list of userid => user name
$gui = new graded_users_iterator($course);
$gui->init();
if ($userid !== 0) {
$menu[0] = get_string('allusers', 'grades');
}
$nextuser = $gui->next_user();
while ($userdata = $gui->next_user()) {
$user = $userdata->user;
$menu[$user->id] = fullname($user);
}
$gui->close();
if ($userid !== 0) {
$menu[0] .= " (" . (count($menu) - 1) . ")";
}
return popup_form($CFG->wwwroot.'/grade/' . $actionpage . '&userid=', $menu, 'choosegradeduser', $userid, null, '', '',
$return, 'self', get_string('selectalloroneuser', 'grades'));
}
/**
* Print grading plugin selection popup form.
*
* @param int $courseid id of course
* @param string $active_type type of plugin on current page - import, export, report or edit
* @param string $active_plugin active plugin type - grader, user, cvs, ...
* @param boolean $return return as string
* @return nothing or string if $return true
*/
function print_grade_plugin_selector($plugin_info, $return=false) {
global $CFG;
$menu = array();
$count = 0;
$active = '';
foreach ($plugin_info as $plugin_type => $plugins) {
if ($plugin_type == 'strings') {
continue;
}
$first_plugin = reset($plugins);
if (is_array($first_plugin)) {
$menu[$first_plugin['link'].'&'] = '**header**'.$plugin_info['strings'][$plugin_type];
} else {
$menu[$plugins['link']] = '**header**'.$plugins['string'];
}
if (empty($plugins['id'])) {
foreach ($plugins as $plugin) {
$menu[$plugin['link']] = $plugin['string'];
$count++;
}
}
}
/// finally print/return the popup form
if ($count > 1) {
$select = popup_form('', $menu, 'choosepluginreport', '', get_string('chooseaction', 'grades'), '', '', true, 'self');
$select = preg_replace('/\>\*\*header\*\*/', ' class="optionheader">', $select);
if ($return) {
return $select;
} else {
echo $select;
}
} else {
// only one option - no plugin selector needed
return '';
}
}
/**
* Print grading plugin selection tab-based navigation.
*
* @param int $courseid id of course
* @param string $active_type type of plugin on current page - import, export, report or edit
* @param string $active_plugin active plugin type - grader, user, cvs, ...
* @param boolean $return return as string
* @return nothing or string if $return true
*/
function grade_print_tabs($active_type, $active_plugin, $plugin_info, $return=false) {
global $CFG, $COURSE;
if (!isset($currenttab)) {
$currenttab = '';
}
$tabs = array();
$top_row = array();
$bottom_row = array();
$inactive = array($active_plugin);
$activated = array();
$count = 0;
$active = '';
foreach ($plugin_info as $plugin_type => $plugins) {
if ($plugin_type == 'strings') {
continue;
}
// If $plugins is actually the definition of a child-less parent link:
if (!empty($plugins['id'])) {
$string = $plugins['string'];
if (!empty($plugin_info[$active_type]['parent'])) {
$string = $plugin_info[$active_type]['parent']['string'];
}
$top_row[] = new tabobject($plugin_type, $plugins['link'], $string);
continue;
}
$first_plugin = reset($plugins);
$url = $first_plugin['link'];
if ($plugin_type == 'report') {
$url = $CFG->wwwroot.'/grade/report/index.php?id='.$COURSE->id;
}
$top_row[] = new tabobject($plugin_type, $url, $plugin_info['strings'][$plugin_type]);
if ($active_type == $plugin_type) {
foreach ($plugins as $plugin) {
$bottom_row[] = new tabobject($plugin['id'], $plugin['link'], $plugin['string']);
if ($plugin['id'] == $active_plugin) {
$inactive = array($plugin['id']);
}
}
}
}
$tabs[] = $top_row;
$tabs[] = $bottom_row;
if ($return) {
return print_tabs($tabs, $active_type, $inactive, $activated, true);
} else {
print_tabs($tabs, $active_type, $inactive, $activated);
}
}
function grade_get_plugin_info($courseid, $active_type, $active_plugin) {
global $CFG;
$context = get_context_instance(CONTEXT_COURSE, $courseid);
$plugin_info = array();
$count = 0;
$active = '';
$url_prefix = $CFG->wwwroot . '/grade/';
// Language strings
$plugin_info['strings'] = array(
'report' => get_string('view'),
'edittree' => get_string('edittree', 'grades'),
'scale' => get_string('scales'),
'outcome' => get_string('outcomes', 'grades'),
'letter' => get_string('letters', 'grades'),
'export' => get_string('export', 'grades'),
'import' => get_string('import'),
'preferences' => get_string('mypreferences', 'grades'),
'settings' => get_string('settings'));
// Settings tab first
if (has_capability('moodle/course:update', $context)) {
$url = $url_prefix.'edit/settings/index.php?id='.$courseid;
if ($active_type == 'settings' and $active_plugin == 'course') {
$active = $url;
}
$plugin_info['settings'] = array('id' => 'coursesettings', 'link' => $url, 'string' => get_string('settings'));
$count++;
}
/// report plugins with its special structure
if ($reports = get_list_of_plugins('grade/report', 'CVS')) { // Get all installed reports
foreach ($reports as $key => $plugin) { // Remove ones we can't see
if (!has_capability('gradereport/'.$plugin.':view', $context)) {
unset($reports[$key]);
}
}
}
$reportnames = array();
if (!empty($reports)) {
foreach ($reports as $plugin) {
$url = $url_prefix.'report/'.$plugin.'/index.php?id='.$courseid;
if ($active_type == 'report' and $active_plugin == $plugin ) {
$active = $url;
}
$reportnames[$plugin] = array('id' => $plugin, 'link' => $url, 'string' => get_string('modulename', 'gradereport_'.$plugin));
// Add link to preferences tab if such a page exists
if (file_exists($CFG->dirroot . '/grade/report/'.$plugin.'/preferences.php')) {
$pref_url = $url_prefix.'report/'.$plugin.'/preferences.php?id='.$courseid;
$plugin_info['preferences'][$plugin] = array('id' => $plugin, 'link' => $pref_url, 'string' => get_string('modulename', 'gradereport_'.$plugin));
}
$count++;
}
asort($reportnames);
}
if (!empty($reportnames)) {
$plugin_info['report']=$reportnames;
}
/// editing scripts - not real plugins
if (has_capability('moodle/grade:manage', $context)
or has_capability('moodle/grade:manageletters', $context)
or has_capability('moodle/course:managescales', $context)
or has_capability('moodle/course:update', $context)) {
if (has_capability('moodle/grade:manage', $context)) {
$url = $url_prefix.'edit/tree/index.php?sesskey='.sesskey().'&showadvanced=0&id='.$courseid;
$url_adv = $url_prefix.'edit/tree/index.php?sesskey='.sesskey().'&showadvanced=1&id='.$courseid;
if ($active_type == 'edittree' and $active_plugin == 'simpleview') {
$active = $url;
} elseif ($active_type == 'edittree' and $active_plugin == 'fullview') {
$active = $url_adv;
}
$plugin_info['edittree'] = array();
$plugin_info['edittree']['simpleview'] = array('id' => 'simpleview', 'link' => $url, 'string' => get_string('simpleview', 'grades'));
$plugin_info['edittree']['fullview'] = array('id' => 'fullview', 'link' => $url_adv, 'string' => get_string('fullview', 'grades'));
$count++;
}
if (has_capability('moodle/course:managescales', $context)) {
$url = $url_prefix.'edit/scale/index.php?id='.$courseid;
if ($active_type == 'scale' and is_null($active_plugin)) {
$active = $url;
}
if ($active_type == 'scale' and $active_plugin == 'edit') {
$edit_url = $url_prefix.'edit/scale/edit.php?courseid='.$courseid.'&id='.optional_param('id', 0, PARAM_INT);
$active = $edit_url;
$plugin_info['scale'] = array('id' => 'edit', 'link' => $edit_url, 'string' => get_string('edit'),
'parent' => array('id' => 'scale', 'link' => $url, 'string' => get_string('scales')));
} else {
$plugin_info['scale'] = array('id' => 'scale', 'link' => $url, 'string' => get_string('scales'));
}
$count++;
}
if (!empty($CFG->enableoutcomes) && (has_capability('moodle/grade:manage', $context) or
has_capability('moodle/course:update', $context))) {
$url_course = $url_prefix.'edit/outcome/course.php?id='.$courseid;
$url_edit = $url_prefix.'edit/outcome/index.php?id='.$courseid;
$plugin_info['outcome'] = array();
if (has_capability('moodle/course:update', $context)) { // Default to course assignment
$plugin_info['outcome']['course'] = array('id' => 'course', 'link' => $url_course, 'string' => get_string('outcomescourse', 'grades'));
$plugin_info['outcome']['edit'] = array('id' => 'edit', 'link' => $url_edit, 'string' => get_string('editoutcomes', 'grades'));
} else {
$plugin_info['outcome'] = array('id' => 'edit', 'link' => $url_course, 'string' => get_string('outcomescourse', 'grades'));
}
if ($active_type == 'outcome' and is_null($active_plugin)) {
$active = $url_edit;
} elseif ($active_type == 'outcome' and $active_plugin == 'course' ) {
$active = $url_course;
} elseif ($active_type == 'outcome' and $active_plugin == 'edit' ) {
$active = $url_edit;
} elseif ($active_type == 'outcome' and $active_plugin == 'import') {
$plugin_info['outcome']['import'] = array('id' => 'import', 'link' => null, 'string' => get_string('importoutcomes', 'grades'));
}
$count++;
}
if (has_capability('moodle/grade:manage', $context) or has_capability('moodle/grade:manageletters', $context)) {
$course_context = get_context_instance(CONTEXT_COURSE, $courseid);
$url = $url_prefix.'edit/letter/index.php?id='.$courseid;
$url_edit = $url_prefix.'edit/letter/edit.php?id='.$course_context->id;
if ($active_type == 'letter' and $active_plugin == 'view' ) {
$active = $url;
} elseif ($active_type == 'letter' and $active_plugin == 'edit' ) {
$active = $url_edit;
}
$plugin_info['letter'] = array();
$plugin_info['letter']['view'] = array('id' => 'view', 'link' => $url, 'string' => get_string('view'));
$plugin_info['letter']['edit'] = array('id' => 'edit', 'link' => $url_edit, 'string' => get_string('edit'));
$count++;
}
}
/// standard import plugins
if ($imports = get_list_of_plugins('grade/import', 'CVS')) { // Get all installed import plugins
foreach ($imports as $key => $plugin) { // Remove ones we can't see
if (!has_capability('gradeimport/'.$plugin.':view', $context)) {
unset($imports[$key]);
}
}
}
$importnames = array();
if (!empty($imports)) {
foreach ($imports as $plugin) {
$url = $url_prefix.'import/'.$plugin.'/index.php?id='.$courseid;
if ($active_type == 'import' and $active_plugin == $plugin ) {
$active = $url;
}
$importnames[$plugin] = array('id' => $plugin, 'link' => $url, 'string' => get_string('modulename', 'gradeimport_'.$plugin));
$count++;
}
asort($importnames);
}
if (!empty($importnames)) {
$plugin_info['import']=$importnames;
}
/// standard export plugins
if ($exports = get_list_of_plugins('grade/export', 'CVS')) { // Get all installed export plugins
foreach ($exports as $key => $plugin) { // Remove ones we can't see
if (!has_capability('gradeexport/'.$plugin.':view', $context)) {
unset($exports[$key]);
}
}
}
$exportnames = array();
if (!empty($exports)) {
foreach ($exports as $plugin) {
$url = $url_prefix.'export/'.$plugin.'/index.php?id='.$courseid;
if ($active_type == 'export' and $active_plugin == $plugin ) {
$active = $url;
}
$exportnames[$plugin] = array('id' => $plugin, 'link' => $url, 'string' => get_string('modulename', 'gradeexport_'.$plugin));
$count++;
}
asort($exportnames);
}
if (!empty($exportnames)) {
$plugin_info['export']=$exportnames;
}
// Key managers
if ($CFG->gradepublishing) {
$keymanager_url = $url_prefix.'export/keymanager.php?id='.$courseid;
$plugin_info['export']['keymanager'] = array('id' => 'keymanager', 'link' => $keymanager_url, 'string' => get_string('keymanager', 'grades'));
if ($active_type == 'export' and $active_plugin == 'keymanager' ) {
$active = $keymanager_url;
}
$count++;
$keymanager_url = $url_prefix.'import/keymanager.php?id='.$courseid;
$plugin_info['import']['keymanager'] = array('id' => 'keymanager', 'link' => $keymanager_url, 'string' => get_string('keymanager', 'grades'));
if ($active_type == 'import' and $active_plugin == 'keymanager' ) {
$active = $keymanager_url;
}
$count++;
}
foreach ($plugin_info as $plugin_type => $plugins) {
if (!empty($plugins['id']) && $active_plugin == $plugins['id']) {
$plugin_info['strings']['active_plugin_str'] = $plugins['string'];
break;
}
foreach ($plugins as $plugin) {
if ($active_plugin == $plugin['id']) {
$plugin_info['strings']['active_plugin_str'] = $plugin['string'];
}
}
}
// Put settings last
if (!empty($plugin_info['settings'])) {
$settings = $plugin_info['settings'];
unset($plugin_info['settings']);
$plugin_info['settings'] = $settings;
}
// Put preferences last
if (!empty($plugin_info['preferences'])) {
$prefs = $plugin_info['preferences'];
unset($plugin_info['preferences']);
$plugin_info['preferences'] = $prefs;
}
return $plugin_info;
}
/**
* Prints the page headers, breadcrumb trail, page heading, (optional) dropdown navigation menu and
* (optional) navigation tabs for any gradebook page. All gradebook pages MUST use these functions
* in favour of the usual print_header(), print_header_simple(), print_heading() etc.
* !IMPORTANT! Use of tabs.php file in gradebook pages is forbidden unless tabs are switched off at
* the site level for the gradebook ($CFG->grade_navmethod = GRADE_NAVMETHOD_DROPDOWN).
*
* @param int $courseid
* @param string $active_type The type of the current page (report, settings, import, export, scales, outcomes, letters)
* @param string $active_plugin The plugin of the current page (grader, fullview etc...)
* @param string $heading The heading of the page. Tries to guess if none is given
* @param boolean $return Whether to return (true) or echo (false) the HTML generated by this function
* @param string $bodytags Additional attributes that will be added to the <body> tag
* @param string $buttons Additional buttons to display on the page
*
* @return string HTML code or nothing if $return == false
*/
function print_grade_page_head($courseid, $active_type, $active_plugin=null, $heading = false, $return=false, $bodytags='', $buttons=false) {
global $CFG, $COURSE;
$strgrades = get_string('grades');
$plugin_info = grade_get_plugin_info($courseid, $active_type, $active_plugin);
// Determine the string of the active plugin
$stractive_plugin = ($active_plugin) ? $plugin_info['strings']['active_plugin_str'] : $heading;
$stractive_type = $plugin_info['strings'][$active_type];
$navlinks = array();
$first_link = '';
if ($active_type == 'settings' && $active_plugin != 'coursesettings') {
$first_link = $plugin_info['report'][$active_plugin]['link'];
} elseif ($active_type != 'report') {
$first_link = $CFG->wwwroot.'/grade/index.php?id='.$COURSE->id;
}
if ($active_type == 'preferences') {
$CFG->stylesheets[] = $CFG->wwwroot . '/grade/report/styles.css';
}
$navlinks[] = array('name' => $strgrades,
'link' => $first_link,
'type' => 'misc');
$active_type_link = '';
if (!empty($plugin_info[$active_type]['link']) && $plugin_info[$active_type]['link'] != qualified_me()) {
$active_type_link = $plugin_info[$active_type]['link'];
}
if (!empty($plugin_info[$active_type]['parent']['link'])) {
$active_type_link = $plugin_info[$active_type]['parent']['link'];
$navlinks[] = array('name' => $stractive_type, 'link' => $active_type_link, 'type' => 'misc');
}
if (empty($plugin_info[$active_type]['id'])) {
$navlinks[] = array('name' => $stractive_type, 'link' => $active_type_link, 'type' => 'misc');
}
$navlinks[] = array('name' => $stractive_plugin, 'link' => null, 'type' => 'misc');
$navigation = build_navigation($navlinks);
$title = ': ' . $stractive_plugin;
if (empty($plugin_info[$active_type]['id']) || !empty($plugin_info[$active_type]['parent'])) {
$title = ': ' . $stractive_type . ': ' . $stractive_plugin;
}
$returnval = print_header_simple($strgrades . ': ' . $stractive_type, $title, $navigation, '',
$bodytags, true, $buttons, navmenu($COURSE), false, '', $return);
// Guess heading if not given explicitly
if (!$heading) {
$heading = $stractive_plugin;
}
if ($CFG->grade_navmethod == GRADE_NAVMETHOD_COMBO || $CFG->grade_navmethod == GRADE_NAVMETHOD_DROPDOWN) {
$returnval .= print_grade_plugin_selector($plugin_info, $return);
}
$returnval .= print_heading($heading);
if ($CFG->grade_navmethod == GRADE_NAVMETHOD_COMBO || $CFG->grade_navmethod == GRADE_NAVMETHOD_TABS) {
$returnval .= grade_print_tabs($active_type, $active_plugin, $plugin_info, $return);
}
if ($return) {
return $returnval;
}
}
/**
* Utility class used for return tracking when using edit and other forms in grade plugins
*/
class grade_plugin_return {
public $type;
public $plugin;
public $courseid;
public $userid;
public $page;
/**
* Constructor
* @param array $params - associative array with return parameters, if null parameter are taken from _GET or _POST
*/
public function grade_plugin_return ($params=null) {
if (empty($params)) {
$this->type = optional_param('gpr_type', null, PARAM_SAFEDIR);
$this->plugin = optional_param('gpr_plugin', null, PARAM_SAFEDIR);
$this->courseid = optional_param('gpr_courseid', null, PARAM_INT);
$this->userid = optional_param('gpr_userid', null, PARAM_INT);
$this->page = optional_param('gpr_page', null, PARAM_INT);
} else {
foreach ($params as $key=>$value) {
if (array_key_exists($key, $this)) {
$this->$key = $value;
}
}
}
}
/**
* Returns return parameters as options array suitable for buttons.
* @return array options
*/
public function get_options() {
if (empty($this->type)) {
return array();
}
$params = array();
if (!empty($this->plugin)) {
$params['plugin'] = $this->plugin;
}
if (!empty($this->courseid)) {
$params['id'] = $this->courseid;
}
if (!empty($this->userid)) {
$params['userid'] = $this->userid;
}
if (!empty($this->page)) {
$params['page'] = $this->page;
}
return $params;
}
/**
* Returns return url
* @param string $default default url when params not set
* @return string url
*/
public function get_return_url($default, $extras=null) {
global $CFG;
if (empty($this->type) or empty($this->plugin)) {
return $default;
}
$url = $CFG->wwwroot.'/grade/'.$this->type.'/'.$this->plugin.'/index.php';
$glue = '?';
if (!empty($this->courseid)) {
$url .= $glue.'id='.$this->courseid;
$glue = '&';
}
if (!empty($this->userid)) {
$url .= $glue.'userid='.$this->userid;
$glue = '&';
}
if (!empty($this->page)) {
$url .= $glue.'page='.$this->page;
$glue = '&';
}
if (!empty($extras)) {
foreach($extras as $key=>$value) {
$url .= $glue.$key.'='.$value;
$glue = '&';
}
}
return $url;
}
/**
* Returns string with hidden return tracking form elements.
* @return string
*/
public function get_form_fields() {
if (empty($this->type)) {
return '';
}
$result = '<input type="hidden" name="gpr_type" value="'.$this->type.'" />';
if (!empty($this->plugin)) {
$result .= '<input type="hidden" name="gpr_plugin" value="'.$this->plugin.'" />';
}
if (!empty($this->courseid)) {
$result .= '<input type="hidden" name="gpr_courseid" value="'.$this->courseid.'" />';
}
if (!empty($this->userid)) {
$result .= '<input type="hidden" name="gpr_userid" value="'.$this->userid.'" />';
}
if (!empty($this->page)) {
$result .= '<input type="hidden" name="gpr_page" value="'.$this->page.'" />';
}
}
/**
* Add hidden elements into mform
* @param object $mform moodle form object
* @return void
*/
public function add_mform_elements(&$mform) {
if (empty($this->type)) {
return;
}
$mform->addElement('hidden', 'gpr_type', $this->type);
$mform->setType('gpr_type', PARAM_SAFEDIR);
if (!empty($this->plugin)) {
$mform->addElement('hidden', 'gpr_plugin', $this->plugin);
$mform->setType('gpr_plugin', PARAM_SAFEDIR);
}
if (!empty($this->courseid)) {
$mform->addElement('hidden', 'gpr_courseid', $this->courseid);
$mform->setType('gpr_courseid', PARAM_INT);
}
if (!empty($this->userid)) {
$mform->addElement('hidden', 'gpr_userid', $this->userid);
$mform->setType('gpr_userid', PARAM_INT);
}
if (!empty($this->page)) {
$mform->addElement('hidden', 'gpr_page', $this->page);
$mform->setType('gpr_page', PARAM_INT);
}
}
/**
* Add return tracking params into url
* @param string $url
* @return string $url with erturn tracking params
*/
public function add_url_params($url) {
if (empty($this->type)) {
return $url;
}
if (strpos($url, '?') === false) {
$url .= '?gpr_type='.$this->type;
} else {
$url .= '&gpr_type='.$this->type;
}
if (!empty($this->plugin)) {
$url .= '&gpr_plugin='.$this->plugin;
}
if (!empty($this->courseid)) {
$url .= '&gpr_courseid='.$this->courseid;
}
if (!empty($this->userid)) {
$url .= '&gpr_userid='.$this->userid;
}
if (!empty($this->page)) {
$url .= '&gpr_page='.$this->page;
}
return $url;
}
}
/**
* Function central to gradebook for building and printing the navigation (breadcrumb trail).
* @param string $path The path of the calling script (using __FILE__?)
* @param string $pagename The language string to use as the last part of the navigation (non-link)
* @param mixed $id Either a plain integer (assuming the key is 'id') or an array of keys and values (e.g courseid => $courseid, itemid...)
* @return string
*/
function grade_build_nav($path, $pagename=null, $id=null) {
global $CFG, $COURSE;
$strgrades = get_string('grades', 'grades');
// Parse the path and build navlinks from its elements
$dirroot_length = strlen($CFG->dirroot) + 1; // Add 1 for the first slash
$path = substr($path, $dirroot_length);
$path = str_replace('\\', '/', $path);
$path_elements = explode('/', $path);
$path_elements_count = count($path_elements);
// First link is always 'grade'
$navlinks = array();
$navlinks[] = array('name' => $strgrades,
'link' => $CFG->wwwroot.'/grade/index.php?id='.$COURSE->id,
'type' => 'misc');
$link = '';
$numberofelements = 3;
// Prepare URL params string
$id_string = '?';
if (!is_null($id)) {
if (is_array($id)) {