first commit

mod/assign/classes/event/all_submissions_downloaded.php

@@ -0,0 +1,112 @@
+<?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/>.
+
+/**
+ * The mod_assign all submissions downloaded event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign all submissions downloaded event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class all_submissions_downloaded extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @return all_submissions_downloaded
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_graded $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has downloaded all the submissions for the assignment " .
+            "with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventallsubmissionsdownloaded', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call all_submissions_downloaded::create() directly, use all_submissions_downloaded::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/assessable_submitted.php

@@ -0,0 +1,126 @@
+<?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/>.
+
+/**
+ * The mod_assign assessable submitted event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign assessable submitted event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - bool submission_editable: is submission editable.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class assessable_submitted extends base {
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $submission
+     * @param bool $editable
+     * @return assessable_submitted
+     */
+    public static function create_from_submission(\assign $assign, \stdClass $submission, $editable) {
+        global $USER;
+
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $submission->id,
+            'other' => array(
+                'submission_editable' => $editable,
+            ),
+        );
+        if (!empty($submission->userid) && ($submission->userid != $USER->id)) {
+            $data['relateduserid'] = $submission->userid;
+        }
+        /** @var assessable_submitted $event */
+        $event = self::create($data);
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has submitted the submission with id '$this->objectid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventassessablesubmitted', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_submission';
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['submission_editable'])) {
+            throw new \coding_exception('The \'submission_editable\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_submission', 'restore' => 'submission');
+    }
+
+    public static function get_other_mapping() {
+        // Nothing to map.
+        return false;
+    }
+}

mod/assign/classes/event/base.php

@@ -0,0 +1,114 @@
+<?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/>.
+
+/**
+ * The mod_assign abstract base event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign abstract base event class.
+ *
+ * Most mod_assign events can extend this class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class base extends \core\event\base {
+
+    /** @var \assign */
+    protected $assign;
+
+    /**
+     * Legacy log data.
+     *
+     * @var array
+     */
+    protected $legacylogdata;
+
+    /**
+     * Set assign instance for this event.
+     * @param \assign $assign
+     * @throws \coding_exception
+     */
+    public function set_assign(\assign $assign) {
+        if ($this->is_triggered()) {
+            throw new \coding_exception('set_assign() must be done before triggerring of event');
+        }
+        if ($assign->get_context()->id != $this->get_context()->id) {
+            throw new \coding_exception('Invalid assign isntance supplied!');
+        }
+        if ($assign->is_blind_marking()) {
+            $this->data['anonymous'] = 1;
+        }
+        $this->assign = $assign;
+    }
+
+    /**
+     * Get assign instance.
+     *
+     * NOTE: to be used from observers only.
+     *
+     * @throws \coding_exception
+     * @return \assign
+     */
+    public function get_assign() {
+        if ($this->is_restored()) {
+            throw new \coding_exception('get_assign() is intended for event observers only');
+        }
+        if (!isset($this->assign)) {
+            debugging('assign property should be initialised in each event', DEBUG_DEVELOPER);
+            global $CFG;
+            require_once($CFG->dirroot . '/mod/assign/locallib.php');
+            $cm = get_coursemodule_from_id('assign', $this->contextinstanceid, 0, false, MUST_EXIST);
+            $course = get_course($cm->course);
+            $this->assign = new \assign($this->get_context(), $cm, $course);
+        }
+        return $this->assign;
+    }
+
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/view.php', array('id' => $this->contextinstanceid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if ($this->contextlevel != CONTEXT_MODULE) {
+            throw new \coding_exception('Context level must be CONTEXT_MODULE.');
+        }
+    }
+}

mod/assign/classes/event/batch_set_marker_allocation_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign batch set marker allocation viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign batch set marker allocation viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class batch_set_marker_allocation_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return batch_set_marker_allocation_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var batch_set_marker_allocation_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventbatchsetmarkerallocationviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the batch set marker allocation for the assignment with course " .
+            "module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call batch_set_marker_allocation_viewed::create() directly, use batch_set_marker_allocation_viewed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/batch_set_workflow_state_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign assignment batch set workflow stated viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign assignment batch set workflow stated viewed event.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class batch_set_workflow_state_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return batch_set_workflow_state_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var batch_set_workflow_state_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventbatchsetworkflowstateviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the batch set workflow for the assignment with course " .
+            "module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call batch_set_workflow_state_viewed::create() directly, use batch_set_workflow_state_viewed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/course_module_instance_list_viewed.php

@@ -0,0 +1,52 @@
+<?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/>.
+
+/**
+ * The mod_assign instance list viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign instance list viewed event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class course_module_instance_list_viewed extends \core\event\course_module_instance_list_viewed {
+    /**
+     * Create the event from course record.
+     *
+     * @param \stdClass $course
+     * @return course_module_instance_list_viewed
+     */
+    public static function create_from_course(\stdClass $course) {
+        $params = array(
+            'context' => \context_course::instance($course->id)
+        );
+        $event = \mod_assign\event\course_module_instance_list_viewed::create($params);
+        $event->add_record_snapshot('course', $course);
+        return $event;
+    }
+}

mod/assign/classes/event/course_module_viewed.php

@@ -0,0 +1,56 @@
+<?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/>.
+
+/**
+ * The mod_assign course module viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2018 Victor Deniz <victor@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+
+/**
+ * The mod_assign course module viewed event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.6
+ * @copyright  2018 Victor Deniz <victor@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class course_module_viewed extends \core\event\course_module_viewed {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/extension_granted.php

@@ -0,0 +1,118 @@
+<?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/>.
+
+/**
+ * The mod_assign extension granted event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign extension granted event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class extension_granted extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param int $userid
+     * @return extension_granted
+     */
+    public static function create_from_assign(\assign $assign, $userid) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id,
+            'relateduserid' => $userid,
+        );
+        self::$preventcreatecall = false;
+        /** @var extension_granted $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has granted an extension for the user with id '$this->relateduserid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventextensiongranted', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call extension_granted::create() directly, use extension_granted::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/feedback_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign feedback viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign feedback viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class feedback_viewed extends base {
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @param \stdClass $grade
+     * @return feedback_viewed
+     */
+    public static function create_from_grade(\assign $assign, \stdClass $grade) {
+        $data = array(
+            'objectid' => $grade->id,
+            'relateduserid' => $grade->userid,
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        /** @var feedback_viewed $event */
+        $event = self::create($data);
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_grades', $grade);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_grades';
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventfeedbackviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the feedback for the user with id '$this->relateduserid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_grades', 'restore' => 'grade');
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/grading_form_viewed.php

@@ -0,0 +1,128 @@
+<?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/>.
+
+/**
+ * The mod_assign grading form viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign grading form viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class grading_form_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @return grading_form_viewed
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user) {
+        $data = array(
+            'relateduserid' => $user->id,
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var grading_form_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventgradingformviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the grading form for the user with id '$this->relateduserid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call grading_form_viewed::create() directly, use grading_form_viewed::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/grading_table_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign grading table viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign grading table viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class grading_table_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return grading_table_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var grading_table_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventgradingtableviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the grading table for the assignment with course module " .
+            "id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call grading_table_viewed::create() directly, use grading_table_viewed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/group_override_created.php

@@ -0,0 +1,118 @@
+<?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/>.
+
+/**
+ * The mod_assign group override created event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign group override created event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ *      - int groupid: the id of the group.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class group_override_created extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'c';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverridecreated', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' created the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the group with id '{$this->other['groupid']}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrideedit.php', array('id' => $this->objectid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+
+        if (!isset($this->other['groupid'])) {
+            throw new \coding_exception('The \'groupid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+        $othermapped['groupid'] = array('db' => 'groups', 'restore' => 'group');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/group_override_deleted.php

@@ -0,0 +1,117 @@
+<?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/>.
+
+/**
+ * The mod_assign group override deleted event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign group override deleted event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ *      - int groupid: the id of the group.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class group_override_deleted extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'd';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverridedeleted', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' deleted the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the group with id '{$this->other['groupid']}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrides.php', array('cmid' => $this->contextinstanceid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+
+        if (!isset($this->other['groupid'])) {
+            throw new \coding_exception('The \'groupid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+        $othermapped['groupid'] = array('db' => 'groups', 'restore' => 'group');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/group_override_updated.php

@@ -0,0 +1,117 @@
+<?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/>.
+
+/**
+ * The mod_assign group override updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign group override updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ *      - int groupid: the id of the group.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class group_override_updated extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverrideupdated', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' updated the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the group with id '{$this->other['groupid']}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrideedit.php', array('id' => $this->objectid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+
+        if (!isset($this->other['groupid'])) {
+            throw new \coding_exception('The \'groupid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+        $othermapped['groupid'] = array('db' => 'groups', 'restore' => 'group');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/identities_revealed.php

@@ -0,0 +1,112 @@
+<?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/>.
+
+/**
+ * The mod_assign identities revealed event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign identities revealed event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class identities_revealed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @return identities_revealed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id
+        );
+        self::$preventcreatecall = false;
+        /** @var identities_revealed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has revealed identities in the assignment with course module " .
+            "id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventidentitiesrevealed', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call identities_revealed::create() directly, use identities_revealed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/marker_updated.php

@@ -0,0 +1,140 @@
+<?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/>.
+
+/**
+ * The mod_assign marker updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign marker updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int markerid: user id of marker.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class marker_updated extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @param \stdClass $marker
+     * @return marker_updated
+     */
+    public static function create_from_marker(\assign $assign, \stdClass $user, \stdClass $marker) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id,
+            'relateduserid' => $user->id,
+            'other' => array(
+                'markerid' => $marker->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var marker_updated $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        $event->add_record_snapshot('user', $marker);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has set the marker for the user with id '$this->relateduserid' to " .
+            "'{$this->other['markerid']}' for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventmarkerupdated', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call marker_updated::create() directly, use marker_updated::create_from_marker() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['markerid'])) {
+            throw new \coding_exception('The \'markerid\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['markerid'] = array('db' => 'user', 'restore' => 'user');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/remove_submission_form_viewed.php

@@ -0,0 +1,134 @@
+<?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/>.
+
+/**
+ * The mod_assign remove submission form viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2019 Damyon Wiese
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign remove submission form viewed event class.
+ *
+ * @package    mod_assign
+ * @copyright  2019 Damyon Wiese
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class remove_submission_form_viewed extends base {
+
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @return remove_submission_form_viewed
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user) {
+        $data = array(
+            'relateduserid' => $user->id,
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var remove_submission_form_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventremovesubmissionformviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        if ($this->userid != $this->relateduserid) {
+            return "The user with id '$this->userid' viewed the " .
+                "remove submission form for the user with id '$this->relateduserid' " .
+                "for the assignment with course module id '$this->contextinstanceid'.";
+        }
+
+        return "The user with id '$this->userid' viewed their remove submission form for the assignment with course module id " .
+            "'$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call remove_submission_form_viewed::create() directly, use ' .
+                                        'remove_submission_form_viewed::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * This is documented in the parent class.
+     *
+     * @return array an array of other values and their corresponding mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/reveal_identities_confirmation_page_viewed.php

@@ -0,0 +1,121 @@
+<?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/>.
+
+/**
+ * The mod_assign reveal identities confirmation page viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign reveal identities confirmation page viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class reveal_identities_confirmation_page_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return reveal_identities_confirmation_page_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var reveal_identities_confirmation_page_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventrevealidentitiesconfirmationpageviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the confirmation page for revealing identities for the " .
+            "assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call reveal_identities_confirmation_page_viewed::create() directly, use reveal_identities_confirmation_page_viewed::create_from_grade() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/statement_accepted.php

@@ -0,0 +1,114 @@
+<?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/>.
+
+/**
+ * The mod_assign statement accepted event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign statement accepted event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class statement_accepted extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $submission
+     * @return statement_accepted
+     */
+    public static function create_from_submission(\assign $assign, \stdClass $submission) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $submission->id
+        );
+        self::$preventcreatecall = false;
+        /** @var statement_accepted $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has accepted the statement of the submission with id '$this->objectid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventstatementaccepted', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+        $this->data['objecttable'] = 'assign_submission';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call statement_accepted::create() directly, use statement_accepted::create_from_submission() instead.');
+        }
+
+        parent::validate_data();
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_submission', 'restore' => 'submission');
+    }
+}

mod/assign/classes/event/submission_confirmation_form_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign submission form viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission form viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_confirmation_form_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return submission_confirmation_form_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_confirmation_form_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionconfirmationformviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the submission confirmation form for the assignment with " .
+            "course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_confirmation_form_viewed::create() directly, use submission_confirmation_form_viewed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_created.php

@@ -0,0 +1,92 @@
+<?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/>.
+
+/**
+ * The mod_assign submission_created abstract event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Adrian Greeve <adrian@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission_created abstract event class.
+ *
+ * @property-read array $other {
+ *      Extra information about the event.
+ *
+ *      - int submissionid: ID number of this submission.
+ *      - int submissionattempt: Number of attempts made on this submission.
+ *      - string submissionstatus: Status of the submission.
+ *      - int groupid: (optional) The group ID if this is a teamsubmission.
+ *      - string groupname: (optional) The name of the group if this is a teamsubmission.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Adrian Greeve <adrian@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class submission_created extends base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'c';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissioncreated', 'mod_assign');
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+        if (!isset($this->other['submissionid'])) {
+            throw new \coding_exception('The \'submissionid\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionattempt'])) {
+            throw new \coding_exception('The \'submissionattempt\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionstatus'])) {
+            throw new \coding_exception('The \'submissionstatus\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['submissionid'] = array('db' => 'assign_submission', 'restore' => 'submission');
+        $othermapped['groupid'] = array('db' => 'groups', 'restore' => 'group');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_duplicated.php

@@ -0,0 +1,113 @@
+<?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/>.
+
+/**
+ * The mod_assign submission duplicated event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission duplicated event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_duplicated extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $submission
+     * @return submission_duplicated
+     */
+    public static function create_from_submission(\assign $assign, \stdClass $submission) {
+        $data = array(
+            'objectid' => $submission->id,
+            'context' => $assign->get_context(),
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_duplicated $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' duplicated their submission with id '$this->objectid' for the " .
+            "assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionduplicated', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'c';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+        $this->data['objecttable'] = 'assign_submission';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_duplicated::create() directly, use submission_duplicated::create_from_submission() instead.');
+        }
+
+        parent::validate_data();
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_submission', 'restore' => 'submission');
+    }
+}

mod/assign/classes/event/submission_form_viewed.php

@@ -0,0 +1,133 @@
+<?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/>.
+
+/**
+ * The mod_assign submission form viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission form viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_form_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @return submission_form_viewed
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user) {
+        $data = array(
+            'relateduserid' => $user->id,
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_form_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionformviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        if ($this->userid != $this->relateduserid) {
+            return "The user with id '$this->userid' viewed the submission form for the user with id '$this->relateduserid' " .
+                "for the assignment with course module id '$this->contextinstanceid'.";
+        }
+
+        return "The user with id '$this->userid' viewed their submission for the assignment with course module id " .
+            "'$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_form_viewed::create() directly, use submission_form_viewed::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_graded.php

@@ -0,0 +1,119 @@
+<?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/>.
+
+/**
+ * The mod_assign submission graded event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission graded event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_graded extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $grade
+     * @return submission_graded
+     */
+    public static function create_from_grade(\assign $assign, \stdClass $grade) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $grade->id,
+            'relateduserid' => $grade->userid
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_graded $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_grades', $grade);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has graded the submission '$this->objectid' for the user with " .
+            "id '$this->relateduserid' for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissiongraded', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign_grades';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_graded::create() directly, use submission_graded::create_from_grade() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_grades', 'restore' => 'grade');
+    }
+}

mod/assign/classes/event/submission_locked.php

@@ -0,0 +1,118 @@
+<?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/>.
+
+/**
+ * The mod_assign submission locked event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission locked event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_locked extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @return submission_locked
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id,
+            'relateduserid' => $user->id,
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_locked $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' locked the submission for the user with id '$this->relateduserid' for " .
+            "the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionlocked', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_locked::create() directly, use submission_locked::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/submission_removed.php

@@ -0,0 +1,154 @@
+<?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/>.
+
+namespace mod_assign\event;
+
+use assign;
+use coding_exception;
+use stdClass;
+
+/**
+ * The mod_assign submission removed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about the event.
+ *
+ *      - int submissionid: ID number of this submission.
+ *      - int submissionattempt: Number of attempts made on this submission.
+ *      - string submissionstatus: Status of the submission.
+ *      - int groupid: (optional) The group ID if this is a teamsubmission.
+ *      - string groupname: (optional) The name of the group if this is a teamsubmission.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 4.0
+ * @copyright  2022 TU Berlin
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_removed extends base {
+    /**
+     * Create instance of event.
+     *
+     * @param assign $assign
+     * @param stdClass $submission
+     * @return submission_removed
+     * @throws coding_exception
+     */
+    public static function create_from_submission(assign $assign, stdClass $submission): submission_removed {
+        $groupname = null;
+        $groupid = 0;
+        if (empty($submission->userid) && !empty($submission->groupid)) {
+            $groupname = groups_get_group_name($submission->groupid);
+            $groupid = $submission->groupid;
+        }
+        $data = [
+            'context' => $assign->get_context(),
+            'objectid' => $submission->id,
+            'relateduserid' => $assign->get_instance()->teamsubmission ? null : $submission->userid,
+            'anonymous' => $assign->is_blind_marking() ? 1 : 0,
+            'other' => [
+                'submissionid' => $submission->id,
+                'submissionattempt' => $submission->attemptnumber,
+                'submissionstatus' => $submission->status,
+                'groupid' => $groupid,
+                'groupname' => $groupname
+            ]
+        ];
+        /** @var submission_removed $event */
+        $event = self::create($data);
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'd';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+        $this->data['objecttable'] = 'assign_submission';
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     * @throws coding_exception
+     */
+    public static function get_name(): string {
+        return get_string('eventsubmissionremoved', 'mod_assign');
+    }
+
+    /**
+     * Returns non-localised description of what happened.
+     *
+     * @return string
+     */
+    public function get_description(): string {
+        $descriptionstring = "The user with id '$this->userid' removed the submission with id '$this->objectid' in " .
+            "the assignment with course module id '$this->contextinstanceid' submitted by ";
+        if (!empty($this->other['groupid'])) {
+            $groupname = $this->other['groupname'];
+            $groupid = $this->other['groupid'];
+            $descriptionstring .= "the group '$groupname' with id '$groupid'.";
+        } else {
+            $descriptionstring .= "the user with id '$this->relateduserid'.";
+        }
+        return $descriptionstring;
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @return void
+     * @throws coding_exception
+     */
+    protected function validate_data() {
+        parent::validate_data();
+        if (!isset($this->other['submissionid'])) {
+            throw new coding_exception('The \'submissionid\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionattempt'])) {
+            throw new coding_exception('The \'submissionattempt\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionstatus'])) {
+            throw new coding_exception('The \'submissionstatus\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping.
+     *
+     * @return array
+     */
+    public static function get_objectid_mapping(): array {
+        return ['db' => 'assign_submission', 'restore' => 'submission'];
+    }
+
+    /**
+     * Get other mapping.
+     *
+     * @return array
+     */
+    public static function get_other_mapping(): array {
+        $othermapped = [];
+        $othermapped['submissionid'] = ['db' => 'assign_submission', 'restore' => 'submission'];
+        $othermapped['groupid'] = ['db' => 'groups', 'restore' => 'group'];
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_status_updated.php

@@ -0,0 +1,120 @@
+<?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/>.
+
+/**
+ * The mod_assign submission status updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission status updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - string newstatus: status of submission.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_status_updated extends base {
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $submission
+     * @return submission_status_updated
+     */
+    public static function create_from_submission(\assign $assign, \stdClass $submission) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $submission->id,
+            'relateduserid' => ($assign->get_instance()->teamsubmission) ? null : $submission->userid,
+            'other' => array(
+                'newstatus' => $submission->status
+            )
+        );
+        /** @var submission_status_updated $event */
+        $event = self::create($data);
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has updated the status of the submission with id '$this->objectid' for " .
+            "the assignment with course module id '$this->contextinstanceid' to the status '{$this->other['newstatus']}'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionstatusupdated', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign_submission';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['newstatus'])) {
+            throw new \coding_exception('The \'newstatus\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_submission', 'restore' => 'submission');
+    }
+
+    public static function get_other_mapping() {
+        // Nothing to map.
+        return false;
+    }
+}

mod/assign/classes/event/submission_status_viewed.php

@@ -0,0 +1,124 @@
+<?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/>.
+
+/**
+ * The mod_assign submission status viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission status viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_status_viewed extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @return submission_status_viewed
+     */
+    public static function create_from_assign(\assign $assign) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_status_viewed $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionstatusviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has viewed the submission status page for the assignment with " .
+            "course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_status_viewed::create() directly, use submission_status_viewed::create_from_assign() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_unlocked.php

@@ -0,0 +1,118 @@
+<?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/>.
+
+/**
+ * The mod_assign submission unlocked event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission unlocked event class.
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_unlocked extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @return submission_unlocked
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id,
+            'relateduserid' => $user->id,
+        );
+        self::$preventcreatecall = false;
+        /** @var submission_unlocked $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' unlocked the submission for the user with id '$this->relateduserid' " .
+            "for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionunlocked', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call submission_unlocked::create() directly, use submission_unlocked::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+}

mod/assign/classes/event/submission_updated.php

@@ -0,0 +1,92 @@
+<?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/>.
+
+/**
+ * The mod_assign submission updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about the event.
+ *
+ *      - int submissionid: ID number of this submission.
+ *      - int submissionattempt: Number of attempts made on this submission.
+ *      - string submissionstatus: Status of the submission.
+ *      - int groupid: (optional) The group ID if this is a teamsubmission.
+ *      - string groupname: (optional) The name of the group if this is a teamsubmission.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class submission_updated extends base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionupdated', 'mod_assign');
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+        if (!isset($this->other['submissionid'])) {
+            throw new \coding_exception('The \'submissionid\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionattempt'])) {
+            throw new \coding_exception('The \'submissionattempt\' value must be set in other.');
+        }
+        if (!isset($this->other['submissionstatus'])) {
+            throw new \coding_exception('The \'submissionstatus\' value must be set in other.');
+        }
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['submissionid'] = array('db' => 'assign_submission', 'restore' => 'submission');
+        $othermapped['groupid'] = array('db' => 'groups', 'restore' => 'group');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/submission_viewed.php

@@ -0,0 +1,122 @@
+<?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/>.
+
+/**
+ * The mod_assign submission viewed event.
+ *
+ * @package    mod_assign
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign submission viewed event class.
+ *
+ * @property-read array $other {
+ *      Extra information about the event.
+ *
+ *      - int assignid: the id of the assignment.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.7
+ * @copyright  2014 Mark Nelson <markn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class submission_viewed extends base {
+    /**
+     * Create instance of event.
+     *
+     * @param \assign $assign
+     * @param \stdClass $submission
+     * @return submission_viewed
+     */
+    public static function create_from_submission(\assign $assign, \stdClass $submission) {
+        $data = array(
+            'objectid' => $submission->id,
+            'relateduserid' => $submission->userid,
+            'context' => $assign->get_context(),
+            'other' => array(
+                'assignid' => $assign->get_instance()->id,
+            ),
+        );
+        /** @var submission_viewed $event */
+        $event = self::create($data);
+        $event->set_assign($assign);
+        $event->add_record_snapshot('assign_submission', $submission);
+        return $event;
+    }
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_submission';
+        $this->data['crud'] = 'r';
+        $this->data['edulevel'] = self::LEVEL_PARTICIPATING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventsubmissionviewed', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' viewed the submission for the user with id '$this->relateduserid' for the " .
+            "assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_submission', 'restore' => 'submission');
+    }
+
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/user_override_created.php

@@ -0,0 +1,115 @@
+<?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/>.
+
+/**
+ * The mod_assign user override created event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign user override created event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class user_override_created extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'c';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverridecreated', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' created the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the user with id '{$this->relateduserid}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrideedit.php', array('id' => $this->objectid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/user_override_deleted.php

@@ -0,0 +1,115 @@
+<?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/>.
+
+/**
+ * The mod_assign user override deleted event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign user override deleted event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class user_override_deleted extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'd';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverridedeleted', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' deleted the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the user with id '{$this->relateduserid}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrides.php', array('cmid' => $this->contextinstanceid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/user_override_updated.php

@@ -0,0 +1,116 @@
+<?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/>.
+
+/**
+ * The mod_assign user override updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_assign user override updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - int assignid: the id of the assign.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 3.2
+ * @copyright  2016 Ilya Tregubov
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class user_override_updated extends \core\event\base {
+
+    /**
+     * Init method.
+     */
+    protected function init() {
+        $this->data['objecttable'] = 'assign_overrides';
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+    }
+
+    /**
+     * Returns localised general event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventoverrideupdated', 'mod_assign');
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' updated the override with id '$this->objectid' for the assign with " .
+            "course module id '$this->contextinstanceid' for the user with id '{$this->relateduserid}'.";
+    }
+
+    /**
+     * Returns relevant URL.
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url('/mod/assign/overrideedit.php', array('id' => $this->objectid));
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['assignid'])) {
+            throw new \coding_exception('The \'assignid\' value must be set in other.');
+        }
+    }
+
+    /**
+     * Get objectid mapping
+     */
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign_overrides', 'restore' => 'assign_override');
+    }
+
+    /**
+     * Get other mapping
+     */
+    public static function get_other_mapping() {
+        $othermapped = array();
+        $othermapped['assignid'] = array('db' => 'assign', 'restore' => 'assign');
+
+        return $othermapped;
+    }
+}

mod/assign/classes/event/workflow_state_updated.php

@@ -0,0 +1,137 @@
+<?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/>.
+
+/**
+ * mod_assign workflow state updated event.
+ *
+ * @package    mod_assign
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_assign\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * mod_assign workflow state updated event class.
+ *
+ * @property-read array $other {
+ *      Extra information about event.
+ *
+ *      - string newstate: state of submission.
+ * }
+ *
+ * @package    mod_assign
+ * @since      Moodle 2.6
+ * @copyright  2013 Frédéric Massart
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class workflow_state_updated extends base {
+    /**
+     * Flag for prevention of direct create() call.
+     * @var bool
+     */
+    protected static $preventcreatecall = true;
+
+    /**
+     * Create instance of event.
+     *
+     * @since Moodle 2.7
+     *
+     * @param \assign $assign
+     * @param \stdClass $user
+     * @param string $state
+     * @return workflow_state_updated
+     */
+    public static function create_from_user(\assign $assign, \stdClass $user, $state) {
+        $data = array(
+            'context' => $assign->get_context(),
+            'objectid' => $assign->get_instance()->id,
+            'relateduserid' => $user->id,
+            'other' => array(
+                'newstate' => $state,
+            ),
+        );
+        self::$preventcreatecall = false;
+        /** @var workflow_state_updated $event */
+        $event = self::create($data);
+        self::$preventcreatecall = true;
+        $event->set_assign($assign);
+        $event->add_record_snapshot('user', $user);
+        return $event;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        return "The user with id '$this->userid' has set the workflow state of the user with id '$this->relateduserid' " .
+            "to the state '{$this->other['newstate']}' for the assignment with course module id '$this->contextinstanceid'.";
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('eventworkflowstateupdated', 'mod_assign');
+    }
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_TEACHING;
+        $this->data['objecttable'] = 'assign';
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     */
+    protected function validate_data() {
+        if (self::$preventcreatecall) {
+            throw new \coding_exception('cannot call workflow_state_updated::create() directly, use workflow_state_updated::create_from_user() instead.');
+        }
+
+        parent::validate_data();
+
+        if (!isset($this->relateduserid)) {
+            throw new \coding_exception('The \'relateduserid\' must be set.');
+        }
+
+        if (!isset($this->other['newstate'])) {
+            throw new \coding_exception('The \'newstate\' value must be set in other.');
+        }
+    }
+
+    public static function get_objectid_mapping() {
+        return array('db' => 'assign', 'restore' => 'assign');
+    }
+
+    public static function get_other_mapping() {
+        // Nothing to map.
+        return false;
+    }
+}