Functions
object	chat_add_instance ($chat)
	Given an object containing all the necessary data, (defined by the form in mod_form.php) this function will create a new instance and return the id number of the new instance.

	chat_calculate_next_chat_time (int $schedule, int $chattime)
	Calculate next chat session time based on schedule.

object	chat_delete_instance ($id)
	Given an ID of an instance of this module, this function will permanently delete the instance and any data that depends on it.

object	chat_delete_old_users ()
	Delete the old and in the way.

	chat_extend_navigation ($navigation, $course, $module, $cm)

	chat_extend_settings_navigation (settings_navigation $settings, navigation_node $chatnode)
	Adds module specific settings to the settings block.

object	chat_format_message ($message, $courseid, $currentuser, $chatlastrow=null)
	Given a message object this function formats it appropriately into text and html then returns the formatted data.

object	chat_format_message_manually ($message, $courseid, $sender, $currentuser, $chatlastrow=null)
	@global object

object	chat_format_message_theme ($message, $chatuser, $currentuser, $groupingid, $theme='bubble')

object	chat_format_userlist ($users, $course)
	$DB @global object $CFG @global object $COURSE @global object $OUTPUT

	chat_get_coursemodule_info ($coursemodule)
	Add a get_coursemodule_info function in case chat instance wants to add 'extra' information for the course (see resource).

object	chat_get_latest_message ($chatid, $groupid=0)

	chat_get_latest_messages ($chatuser, $chatlasttime)
	Return a list of the latest messages in the given chat session.

	chat_get_post_actions ()
	List the actions that correspond to a post of this module.

	chat_get_session_messages ($chatid, $group=false, $start=0, $end=0, $sort='')
	Return the messages of the given chat session.

	chat_get_sessions ($messages, $showall=false)
	Given a set of messages for a chat, return the completed chat sessions (including optionally not completed ones).

object	chat_get_users ($chatid, $groupid=0, $groupingid=0)

	chat_get_view_actions ()
	List the actions that correspond to a view of this module.

object	chat_login_user ($chatid, $version, $groupid, $course)
	login if not already logged in

	chat_page_type_list ($pagetype, $parentcontext, $currentcontext)
	Return a list of page types.

	chat_prepare_update_events ($chat, $cm=null)
	Updates both the normal and completion calendar events for chat.

	chat_print_error ($level, $msg)
	Print json format error.

	chat_print_overview ()

object	chat_print_recent_activity ($course, $viewfullnames, $timestart)
	Given a course and a date, prints a summary of all chat rooms past and present This function is called from block_recent_activity.

object	chat_refresh_events ($courseid=0, $instance=null, $cm=null)
	This standard function will check all instances of this module and make sure there are up-to-date events created for each of them.

	chat_reset_course_form_defaults ($course)
	Course reset form defaults.

	chat_reset_course_form_definition (&$mform)
	Implementation of the function for printing the form elements that control whether the course reset functionality affects the chat.

object	chat_reset_userdata ($data)
	Actual implementation of the reset course functionality, delete all the chat messages for course $data->courseid.

	chat_send_chatmessage ($chatuser, $messagetext, $issystem=false, $cm=null)
	Send a message on the chat.

	chat_supports ($feature)

object	chat_update_chat_times ($chatid=0)
	Updates chat records so that the next chat time is correct.

object	chat_update_instance ($chat)
	Given an object containing all the necessary data, (defined by the form in mod_form.php) this function will update an existing instance with new data.

	chat_user_logout (\core\event\user_loggedout $event)
	user logout event handler

	chat_view ($chat, $course, $cm, $context)
	Mark the activity completed (if required) and trigger the course_module_viewed event.

	mod_chat_core_calendar_provide_event_action (calendar_event $event, core_calendar\action_factory $factory, int $userid=0)
	This function receives a calendar event and returns the action associated with it, or null if there is none.

	padding ($n)

Variables
global	$CHAT_DUMMY_DATA = padding(200)

global	$CHAT_HTMLHEAD

	$CHAT_HTMLHEAD_JS =

	$CHAT_HTMLHEAD_MSGINPUT

	$CHAT_HTMLHEAD_MSGINPUT_JS =

global	$CHAT_HTMLHEAD_OUT

const	CHAT_EVENT_TYPE_CHATTIME 'chattime'

const	CHAT_SCHEDULE_DAILY 2

const	CHAT_SCHEDULE_NONE 0

const	CHAT_SCHEDULE_SINGLE 1

const	CHAT_SCHEDULE_WEEKLY 3

const	CHAT_SESSION_GAP 300

Functions

Variables