Package com.example.slacks_lottoevent.viewmodel

Class EventViewModel

java.lang.Object

androidx.lifecycle.ViewModel

com.example.slacks_lottoevent.viewmodel.EventViewModel

public class EventViewModel
extends androidx.lifecycle.ViewModel

EventViewModel is a class that provides the UI with the data it needs to display events.

Constructor Summary

Constructors

Constructor	Description
EventViewModel()	EventViewModel is a constructor that initializes the EventDB and sets the event change listener.

Method Summary

Modifier and Type	Method	Description
androidx.lifecycle.LiveData<List<Event>>	getEntrantEventsLiveData()	getEntrantEventsLiveData is a method that returns the entrant events live data.
androidx.lifecycle.LiveData<HashMap<String,Event>>	getEventsLiveData()	getEventsLiveData is a method that returns the events live data.
androidx.lifecycle.LiveData<List<Event>>	getHostingEventsLiveData()	getHostingEventsLiveData is a method that returns the hosting events live data.
void	updateEvent(Event event)	addEvent is a method that adds an event to the database.
void	updateEventLists(List<String> waitlistedIds, List<String> unselectedIds, List<String> invitedIds, List<String> attendingIds)	updateEventLists is a method that updates the entrant events live data.
void	updateOrganizerEvents(List<String> eventIds)	updateOrganizerEvents is a method that updates the hosting events live data.

Methods inherited from class androidx.lifecycle.ViewModel

addCloseable, onCleared

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EventViewModel

public EventViewModel()

EventViewModel is a constructor that initializes the EventDB and sets the event change listener.

Method Details

getEventsLiveData

public androidx.lifecycle.LiveData<HashMap<String,Event>> getEventsLiveData()

getEventsLiveData is a method that returns the events live data.

Returns:

the events live data.

getEntrantEventsLiveData

public androidx.lifecycle.LiveData<List<Event>> getEntrantEventsLiveData()

getEntrantEventsLiveData is a method that returns the entrant events live data.

Returns:

the entrant events live data.

getHostingEventsLiveData

public androidx.lifecycle.LiveData<List<Event>> getHostingEventsLiveData()

getHostingEventsLiveData is a method that returns the hosting events live data.

Returns:

the hosting events live data.

updateEventLists

public void updateEventLists(List<String> waitlistedIds,
 List<String> unselectedIds,
 List<String> invitedIds,
 List<String> attendingIds)

updateEventLists is a method that updates the entrant events live data.

Parameters:

waitlistedIds - is a list of waitlisted event IDs.

unselectedIds - is a list of unselected event IDs.

invitedIds - is a list of invited event IDs.

attendingIds - is a list of attending event IDs.

updateOrganizerEvents

public void updateOrganizerEvents(List<String> eventIds)

updateOrganizerEvents is a method that updates the hosting events live data.

Parameters:

eventIds - is a list of event IDs.

updateEvent

public void updateEvent(Event event)

addEvent is a method that adds an event to the database.

Parameters:

event - is an event to add.