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lib.php
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lib.php
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<?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/>.
/**
* Functions used by gradebook plugins and reports.
*
* @package core_grades
* @copyright 2009 Petr Skoda and Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once($CFG->libdir . '/gradelib.php');
require_once($CFG->dirroot . '/grade/export/lib.php');
/**
* This class iterates over all users that are graded in a course.
* Returns detailed info about users and their grades.
*
* @author Petr Skoda <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class graded_users_iterator {
/**
* The couse whose users we are interested in
*/
protected $course;
/**
* An array of grade items or null if only user data was requested
*/
protected $grade_items;
/**
* The group ID we are interested in. 0 means all groups.
*/
protected $groupid;
/**
* A recordset of graded users
*/
protected $users_rs;
/**
* A recordset of user grades (grade_grade instances)
*/
protected $grades_rs;
/**
* Array used when moving to next user while iterating through the grades recordset
*/
protected $gradestack;
/**
* The first field of the users table by which the array of users will be sorted
*/
protected $sortfield1;
/**
* Should sortfield1 be ASC or DESC
*/
protected $sortorder1;
/**
* The second field of the users table by which the array of users will be sorted
*/
protected $sortfield2;
/**
* Should sortfield2 be ASC or DESC
*/
protected $sortorder2;
/**
* Should users whose enrolment has been suspended be ignored?
*/
protected $onlyactive = false;
/**
* Enable user custom fields
*/
protected $allowusercustomfields = false;
/**
* List of suspended users in course. This includes users whose enrolment status is suspended
* or enrolment has expired or not started.
*/
protected $suspendedusers = array();
/**
* Constructor
*
* @param object $course A 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 $sortorder2 The order in which the second sorting field will be sorted (ASC or DESC)
*/
public function __construct($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;
$this->close();
export_verify_grades($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;
}
$coursecontext = context_course::instance($this->course->id);
list($relatedctxsql, $relatedctxparams) = $DB->get_in_or_equal($coursecontext->get_parent_context_ids(true), SQL_PARAMS_NAMED, 'relatedctx');
list($gradebookroles_sql, $params) = $DB->get_in_or_equal(explode(',', $CFG->gradebookroles), SQL_PARAMS_NAMED, 'grbr');
list($enrolledsql, $enrolledparams) = get_enrolled_sql($coursecontext, '', 0, $this->onlyactive);
$params = array_merge($params, $enrolledparams, $relatedctxparams);
if ($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->sortfield2 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";
}
}
$userfields = 'u.*';
$customfieldssql = '';
if ($this->allowusercustomfields && !empty($CFG->grade_export_customprofilefields)) {
$customfieldscount = 0;
$customfieldsarray = grade_helper::get_user_profile_fields($this->course->id, $this->allowusercustomfields);
foreach ($customfieldsarray as $field) {
if (!empty($field->customid)) {
$customfieldssql .= "
LEFT JOIN (SELECT * FROM {user_info_data}
WHERE fieldid = :cf$customfieldscount) cf$customfieldscount
ON u.id = cf$customfieldscount.userid";
$userfields .= ", cf$customfieldscount.data AS customfield_{$field->shortname}";
$params['cf'.$customfieldscount] = $field->customid;
$customfieldscount++;
}
}
}
$users_sql = "SELECT $userfields $ofields
FROM {user} u
JOIN ($enrolledsql) je ON je.id = u.id
$groupsql $customfieldssql
JOIN (
SELECT DISTINCT ra.userid
FROM {role_assignments} ra
WHERE ra.roleid $gradebookroles_sql
AND ra.contextid $relatedctxsql
) rainner ON rainner.userid = u.id
WHERE u.deleted = 0
$groupwheresql
ORDER BY $order";
$this->users_rs = $DB->get_recordset_sql($users_sql, $params);
if (!$this->onlyactive) {
$context = context_course::instance($this->course->id);
$this->suspendedusers = get_suspended_userids($context);
} else {
$this->suspendedusers = array();
}
if (!empty($this->grade_items)) {
$itemids = array_keys($this->grade_items);
list($itemidsql, $grades_params) = $DB->get_in_or_equal($itemids, SQL_PARAMS_NAMED, 'items');
$params = array_merge($params, $grades_params);
$grades_sql = "SELECT g.* $ofields
FROM {grade_grades} g
JOIN {user} u ON g.userid = u.id
JOIN ($enrolledsql) je ON je.id = u.id
$groupsql
JOIN (
SELECT DISTINCT ra.userid
FROM {role_assignments} ra
WHERE ra.roleid $gradebookroles_sql
AND ra.contextid $relatedctxsql
) rainner ON rainner.userid = u.id
WHERE u.deleted = 0
AND g.itemid $itemidsql
$groupwheresql
ORDER BY $order, g.itemid ASC";
$this->grades_rs = $DB->get_recordset_sql($grades_sql, $params);
} else {
$this->grades_rs = false;
}
return true;
}
/**
* Returns information about the next user
* @return mixed array of user info, all grades and feedback or null when no more users found
*/
public function next_user() {
if (!$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 $grade_item) {
if (!isset($feedbacks[$grade_item->id])) {
$feedbacks[$grade_item->id] = new stdClass();
}
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);
}
$grades[$grade_item->id]->grade_item = $grade_item;
}
}
// Set user suspended status.
$user->suspendedenrolment = isset($this->suspendedusers[$user->id]);
$result = new stdClass();
$result->user = $user;
$result->grades = $grades;
$result->feedbacks = $feedbacks;
return $result;
}
/**
* Close the iterator, do not forget to call this function
*/
public function close() {
if ($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();
}
/**
* Should all enrolled users be exported or just those with an active enrolment?
*
* @param bool $onlyactive True to limit the export to users with an active enrolment
*/
public function require_active_enrolment($onlyactive = true) {
if (!empty($this->users_rs)) {
debugging('Calling require_active_enrolment() has no effect unless you call init() again', DEBUG_DEVELOPER);
}
$this->onlyactive = $onlyactive;
}
/**
* Allow custom fields to be included
*
* @param bool $allow Whether to allow custom fields or not
* @return void
*/
public function allow_user_custom_fields($allow = true) {
if ($allow) {
$this->allowusercustomfields = true;
} else {
$this->allowusercustomfields = false;
}
}
/**
* Add a grade_grade instance to the grade stack
*
* @param grade_grade $grade Grade object
*
* @return void
*/
private function _push($grade) {
array_push($this->gradestack, $grade);
}
/**
* Remove a grade_grade instance from the grade stack
*
* @return grade_grade current grade object
*/
private function _pop() {
global $DB;
if (empty($this->gradestack)) {
if (empty($this->grades_rs) || !$this->grades_rs->valid()) {
return null; // no grades present
}
$current = $this->grades_rs->current();
$this->grades_rs->next();
return $current;
} else {
return array_pop($this->gradestack);
}
}
}
/**
* Print a selection popup form of the graded users in a course.
*
* @deprecated since 2.0
*
* @param int $course 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 int $groupid id of requested group, 0 means all
* @param int $includeall bool include all option
* @param bool $return If true, will return the HTML, otherwise, will print directly
* @return null
*/
function print_graded_users_selector($course, $actionpage, $userid=0, $groupid=0, $includeall=true, $return=false) {
global $CFG, $USER, $OUTPUT;
return $OUTPUT->render(grade_get_graded_users_select(substr($actionpage, 0, strpos($actionpage, '/')), $course, $userid, $groupid, $includeall));
}
function grade_get_graded_users_select($report, $course, $userid, $groupid, $includeall) {
global $USER, $CFG;
if (is_null($userid)) {
$userid = $USER->id;
}
$coursecontext = context_course::instance($course->id);
$defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
$showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
$showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $coursecontext);
$menu = array(); // Will be a list of userid => user name
$menususpendedusers = array(); // Suspended users go to a separate optgroup.
$gui = new graded_users_iterator($course, null, $groupid);
$gui->require_active_enrolment($showonlyactiveenrol);
$gui->init();
$label = get_string('selectauser', 'grades');
if ($includeall) {
$menu[0] = get_string('allusers', 'grades');
$label = get_string('selectalloroneuser', 'grades');
}
while ($userdata = $gui->next_user()) {
$user = $userdata->user;
$userfullname = fullname($user);
if ($user->suspendedenrolment) {
$menususpendedusers[$user->id] = $userfullname;
} else {
$menu[$user->id] = $userfullname;
}
}
$gui->close();
if ($includeall) {
$menu[0] .= " (" . (count($menu) + count($menususpendedusers) - 1) . ")";
}
if (!empty($menususpendedusers)) {
$menu[] = array(get_string('suspendedusers') => $menususpendedusers);
}
$select = new single_select(new moodle_url('/grade/report/'.$report.'/index.php', array('id'=>$course->id)), 'userid', $menu, $userid);
$select->label = $label;
$select->formid = 'choosegradeuser';
return $select;
}
/**
* Hide warning about changed grades during upgrade to 2.8.
*
* @param int $courseid The current course id.
*/
function hide_natural_aggregation_upgrade_notice($courseid) {
unset_config('show_sumofgrades_upgrade_' . $courseid);
}
/**
* Hide warning about changed grades during upgrade from 2.8.0-2.8.6 and 2.9.0.
*
* @param int $courseid The current course id.
*/
function grade_hide_min_max_grade_upgrade_notice($courseid) {
unset_config('show_min_max_grades_changed_' . $courseid);
}
/**
* Use the grade min and max from the grade_grade.
*
* This is reserved for core use after an upgrade.
*
* @param int $courseid The current course id.
*/
function grade_upgrade_use_min_max_from_grade_grade($courseid) {
grade_set_setting($courseid, 'minmaxtouse', GRADE_MIN_MAX_FROM_GRADE_GRADE);
grade_force_full_regrading($courseid);
// Do this now, because it probably happened to late in the page load to be happen automatically.
grade_regrade_final_grades($courseid);
}
/**
* Use the grade min and max from the grade_item.
*
* This is reserved for core use after an upgrade.
*
* @param int $courseid The current course id.
*/
function grade_upgrade_use_min_max_from_grade_item($courseid) {
grade_set_setting($courseid, 'minmaxtouse', GRADE_MIN_MAX_FROM_GRADE_ITEM);
grade_force_full_regrading($courseid);
// Do this now, because it probably happened to late in the page load to be happen automatically.
grade_regrade_final_grades($courseid);
}
/**
* Hide warning about changed grades during upgrade to 2.8.
*
* @param int $courseid The current course id.
*/
function hide_aggregatesubcats_upgrade_notice($courseid) {
unset_config('show_aggregatesubcats_upgrade_' . $courseid);
}
/**
* Hide warning about changed grades due to bug fixes
*
* @param int $courseid The current course id.
*/
function hide_gradebook_calculations_freeze_notice($courseid) {
unset_config('gradebook_calculations_freeze_' . $courseid);
}
/**
* Print warning about changed grades during upgrade to 2.8.
*
* @param int $courseid The current course id.
* @param context $context The course context.
* @param string $thispage The relative path for the current page. E.g. /grade/report/user/index.php
* @param boolean $return return as string
*
* @return nothing or string if $return true
*/
function print_natural_aggregation_upgrade_notice($courseid, $context, $thispage, $return=false) {
global $CFG, $OUTPUT;
$html = '';
// Do not do anything if they cannot manage the grades of this course.
if (!has_capability('moodle/grade:manage', $context)) {
return $html;
}
$hidesubcatswarning = optional_param('seenaggregatesubcatsupgradedgrades', false, PARAM_BOOL) && confirm_sesskey();
$showsubcatswarning = get_config('core', 'show_aggregatesubcats_upgrade_' . $courseid);
$hidenaturalwarning = optional_param('seensumofgradesupgradedgrades', false, PARAM_BOOL) && confirm_sesskey();
$shownaturalwarning = get_config('core', 'show_sumofgrades_upgrade_' . $courseid);
$hideminmaxwarning = optional_param('seenminmaxupgradedgrades', false, PARAM_BOOL) && confirm_sesskey();
$showminmaxwarning = get_config('core', 'show_min_max_grades_changed_' . $courseid);
$useminmaxfromgradeitem = optional_param('useminmaxfromgradeitem', false, PARAM_BOOL) && confirm_sesskey();
$useminmaxfromgradegrade = optional_param('useminmaxfromgradegrade', false, PARAM_BOOL) && confirm_sesskey();
$minmaxtouse = grade_get_setting($courseid, 'minmaxtouse', $CFG->grade_minmaxtouse);
$gradebookcalculationsfreeze = get_config('core', 'gradebook_calculations_freeze_' . $courseid);
$acceptgradebookchanges = optional_param('acceptgradebookchanges', false, PARAM_BOOL) && confirm_sesskey();
// Hide the warning if the user told it to go away.
if ($hidenaturalwarning) {
hide_natural_aggregation_upgrade_notice($courseid);
}
// Hide the warning if the user told it to go away.
if ($hidesubcatswarning) {
hide_aggregatesubcats_upgrade_notice($courseid);
}
// Hide the min/max warning if the user told it to go away.
if ($hideminmaxwarning) {
grade_hide_min_max_grade_upgrade_notice($courseid);
$showminmaxwarning = false;
}
if ($useminmaxfromgradegrade) {
// Revert to the new behaviour, we now use the grade_grade for min/max.
grade_upgrade_use_min_max_from_grade_grade($courseid);
grade_hide_min_max_grade_upgrade_notice($courseid);
$showminmaxwarning = false;
} else if ($useminmaxfromgradeitem) {
// Apply the new logic, we now use the grade_item for min/max.
grade_upgrade_use_min_max_from_grade_item($courseid);
grade_hide_min_max_grade_upgrade_notice($courseid);
$showminmaxwarning = false;
}
if (!$hidenaturalwarning && $shownaturalwarning) {
$message = get_string('sumofgradesupgradedgrades', 'grades');
$hidemessage = get_string('upgradedgradeshidemessage', 'grades');
$urlparams = array( 'id' => $courseid,
'seensumofgradesupgradedgrades' => true,
'sesskey' => sesskey());
$goawayurl = new moodle_url($thispage, $urlparams);
$goawaybutton = $OUTPUT->single_button($goawayurl, $hidemessage, 'get');
$html .= $OUTPUT->notification($message, 'notifysuccess');
$html .= $goawaybutton;
}
if (!$hidesubcatswarning && $showsubcatswarning) {
$message = get_string('aggregatesubcatsupgradedgrades', 'grades');
$hidemessage = get_string('upgradedgradeshidemessage', 'grades');
$urlparams = array( 'id' => $courseid,
'seenaggregatesubcatsupgradedgrades' => true,
'sesskey' => sesskey());
$goawayurl = new moodle_url($thispage, $urlparams);
$goawaybutton = $OUTPUT->single_button($goawayurl, $hidemessage, 'get');
$html .= $OUTPUT->notification($message, 'notifysuccess');
$html .= $goawaybutton;
}
if ($showminmaxwarning) {
$hidemessage = get_string('upgradedgradeshidemessage', 'grades');
$urlparams = array( 'id' => $courseid,
'seenminmaxupgradedgrades' => true,
'sesskey' => sesskey());
$goawayurl = new moodle_url($thispage, $urlparams);
$hideminmaxbutton = $OUTPUT->single_button($goawayurl, $hidemessage, 'get');
$moreinfo = html_writer::link(get_docs_url(get_string('minmaxtouse_link', 'grades')), get_string('moreinfo'),
array('target' => '_blank'));
if ($minmaxtouse == GRADE_MIN_MAX_FROM_GRADE_ITEM) {
// Show the message that there were min/max issues that have been resolved.
$message = get_string('minmaxupgradedgrades', 'grades') . ' ' . $moreinfo;
$revertmessage = get_string('upgradedminmaxrevertmessage', 'grades');
$urlparams = array('id' => $courseid,
'useminmaxfromgradegrade' => true,
'sesskey' => sesskey());
$reverturl = new moodle_url($thispage, $urlparams);
$revertbutton = $OUTPUT->single_button($reverturl, $revertmessage, 'get');
$html .= $OUTPUT->notification($message);
$html .= $revertbutton . $hideminmaxbutton;
} else if ($minmaxtouse == GRADE_MIN_MAX_FROM_GRADE_GRADE) {
// Show the warning that there are min/max issues that have not be resolved.
$message = get_string('minmaxupgradewarning', 'grades') . ' ' . $moreinfo;
$fixmessage = get_string('minmaxupgradefixbutton', 'grades');
$urlparams = array('id' => $courseid,
'useminmaxfromgradeitem' => true,
'sesskey' => sesskey());
$fixurl = new moodle_url($thispage, $urlparams);
$fixbutton = $OUTPUT->single_button($fixurl, $fixmessage, 'get');
$html .= $OUTPUT->notification($message);
$html .= $fixbutton . $hideminmaxbutton;
}
}
if ($gradebookcalculationsfreeze) {
if ($acceptgradebookchanges) {
// Accept potential changes in grades caused by extra credit bug MDL-49257.
hide_gradebook_calculations_freeze_notice($courseid);
$courseitem = grade_item::fetch_course_item($courseid);
$courseitem->force_regrading();
grade_regrade_final_grades($courseid);
$html .= $OUTPUT->notification(get_string('gradebookcalculationsuptodate', 'grades'), 'notifysuccess');
} else {
// Show the warning that there may be extra credit weights problems.
$a = new stdClass();
$a->gradebookversion = $gradebookcalculationsfreeze;
if (preg_match('/(\d{8,})/', $CFG->release, $matches)) {
$a->currentversion = $matches[1];
} else {
$a->currentversion = $CFG->release;
}
$a->url = get_docs_url('Gradebook_calculation_changes');
$message = get_string('gradebookcalculationswarning', 'grades', $a);
$fixmessage = get_string('gradebookcalculationsfixbutton', 'grades');
$urlparams = array('id' => $courseid,
'acceptgradebookchanges' => true,
'sesskey' => sesskey());
$fixurl = new moodle_url($thispage, $urlparams);
$fixbutton = $OUTPUT->single_button($fixurl, $fixmessage, 'get');
$html .= $OUTPUT->notification($message);
$html .= $fixbutton;
}
}
if (!empty($html)) {
$html = html_writer::tag('div', $html, array('class' => 'core_grades_notices'));
}
if ($return) {
return $html;
} else {
echo $html;
}
}
/**
* Print grading plugin selection popup form.
*
* @param array $plugin_info An array of plugins containing information for the selector
* @param boolean $return return as string
*
* @return nothing or string if $return true
*/
function print_grade_plugin_selector($plugin_info, $active_type, $active_plugin, $return=false) {
global $CFG, $OUTPUT, $PAGE;
$menu = array();
$count = 0;
$active = '';
foreach ($plugin_info as $plugin_type => $plugins) {
if ($plugin_type == 'strings') {
continue;
}
$first_plugin = reset($plugins);
$sectionname = $plugin_info['strings'][$plugin_type];
$section = array();
foreach ($plugins as $plugin) {
$link = $plugin->link->out(false);
$section[$link] = $plugin->string;
$count++;
if ($plugin_type === $active_type and $plugin->id === $active_plugin) {
$active = $link;
}
}
if ($section) {
$menu[] = array($sectionname=>$section);
}
}
// finally print/return the popup form
if ($count > 1) {
$select = new url_select($menu, $active, null, 'choosepluginreport');
$select->set_label(get_string('gradereport', 'grades'), array('class' => 'accesshide'));
if ($return) {
return $OUTPUT->render($select);
} else {
echo $OUTPUT->render($select);
}
} else {
// only one option - no plugin selector needed
return '';
}
}
/**
* Print grading plugin selection tab-based navigation.
*
* @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 array $plugin_info Array of plugins
* @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)) { //TODO: this is weird
$currenttab = '';
}
$tabs = array();
$top_row = array();
$bottom_row = array();
$inactive = array($active_plugin);
$activated = array($active_type);
$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);
}
}
}
}
// Do not display rows that contain only one item, they are not helpful.
if (count($top_row) > 1) {
$tabs[] = $top_row;
}
if (count($bottom_row) > 1) {
$tabs[] = $bottom_row;
}
if (empty($tabs)) {
return;
}
$rv = html_writer::div(print_tabs($tabs, $active_plugin, $inactive, $activated, true), 'grade-navigation');
if ($return) {
return $rv;
} else {
echo $rv;
}
}
/**
* grade_get_plugin_info
*
* @param int $courseid The course id
* @param string $active_type type of plugin on current page - import, export, report or edit
* @param string $active_plugin active plugin type - grader, user, cvs, ...
*
* @return array
*/
function grade_get_plugin_info($courseid, $active_type, $active_plugin) {
global $CFG, $SITE;
$context = context_course::instance($courseid);
$plugin_info = array();
$count = 0;
$active = '';
$url_prefix = $CFG->wwwroot . '/grade/';
// Language strings
$plugin_info['strings'] = grade_helper::get_plugin_strings();
if ($reports = grade_helper::get_plugins_reports($courseid)) {
$plugin_info['report'] = $reports;
}
if ($settings = grade_helper::get_info_manage_settings($courseid)) {
$plugin_info['settings'] = $settings;
}
if ($scale = grade_helper::get_info_scales($courseid)) {
$plugin_info['scale'] = array('view'=>$scale);
}
if ($outcomes = grade_helper::get_info_outcomes($courseid)) {
$plugin_info['outcome'] = $outcomes;
}
if ($letters = grade_helper::get_info_letters($courseid)) {
$plugin_info['letter'] = $letters;
}
if ($imports = grade_helper::get_plugins_import($courseid)) {
$plugin_info['import'] = $imports;
}
if ($exports = grade_helper::get_plugins_export($courseid)) {
$plugin_info['export'] = $exports;
}
foreach ($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 $plugin) {
if (is_a($plugin, 'grade_plugin_info')) {
if ($active_plugin == $plugin->id) {
$plugin_info['strings']['active_plugin_str'] = $plugin->string;
}
}
}
}
return $plugin_info;
}
/**
* A simple class containing info about grade plugins.
* Can be subclassed for special rules
*
* @package core_grades
* @copyright 2009 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class grade_plugin_info {
/**
* A unique id for this plugin
*
* @var mixed
*/
public $id;
/**
* A URL to access this plugin
*
* @var mixed
*/
public $link;
/**
* The name of this plugin
*
* @var mixed
*/
public $string;
/**
* Another grade_plugin_info object, parent of the current one
*
* @var mixed
*/
public $parent;
/**
* Constructor
*
* @param int $id A unique id for this plugin
* @param string $link A URL to access this plugin
* @param string $string The name of this plugin
* @param object $parent Another grade_plugin_info object, parent of the current one
*
* @return void
*/
public function __construct($id, $link, $string, $parent=null) {
$this->id = $id;
$this->link = $link;
$this->string = $string;
$this->parent = $parent;
}
}
/**
* Prints the page headers, breadcrumb trail, page heading, (optional) dropdown navigation menu and
* (optional) navigation tabs for any gradebook page. All gradebook pages MUST use these functions
* in favour of the usual print_header(), print_header_simple(), print_heading() etc.
* !IMPORTANT! Use of tabs.php file in gradebook pages is forbidden unless tabs are switched off at
* the site level for the gradebook ($CFG->grade_navmethod = GRADE_NAVMETHOD_DROPDOWN).
*
* @param int $courseid Course id
* @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
* @param boolean $shownavigation should the gradebook navigation drop down (or tabs) be shown?
* @param string $headerhelpidentifier The help string identifier if required.
* @param string $headerhelpcomponent The component for the help string.
* @param stdClass $user The user object for use with the user context header.
*
* @return string HTML code or nothing if $return == false
*/
function print_grade_page_head($courseid, $active_type, $active_plugin=null,
$heading = false, $return=false,
$buttons=false, $shownavigation=true, $headerhelpidentifier = null, $headerhelpcomponent = null,
$user = null) {
global $CFG, $OUTPUT, $PAGE;
// Put a warning on all gradebook pages if the course has modules currently scheduled for background deletion.
require_once($CFG->dirroot . '/course/lib.php');
if (course_modules_pending_deletion($courseid)) {
\core\notification::add(get_string('gradesmoduledeletionpendingwarning', 'grades'),
\core\output\notification::NOTIFY_WARNING);
}
if ($active_type === 'preferences') {
// In Moodle 2.8 report preferences were moved under 'settings'. Allow backward compatibility for 3rd party grade reports.
$active_type = 'settings';
}
$plugin_info = grade_get_plugin_info($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];