JonasWanke/timetable

Modify (add/remove) events programmatically (timetable 1.0.0-alpha)

Opened this issue · 4 comments

Deleted user commented

I'm trying to modify events (add/remove) events programmatically in alpha version but I can't find related methods to do so.

@JonasWanke I see that in stable version it is defined in section 3, but in alpha version i couldn't reproduce same behaviour this way. How could I modify events in alpha version?

EventProvider.list(List<E> events): If you have a non-changing list of events.
EventProvider.simpleStream(Stream<List<E>> eventStream): If you have a limited, changing list of events.
EventProvider.stream({StreamedEventGetter<E> eventGetter}): If your events can change or you have many events and only want to load the relevant subset.

JonasWanke commented

In the alpha versions, I removed the complexity of using streams to supply events. Instead, you can pass a function of type EventProvider<E> to timetableConfig.eventProvider:

TimetableConfig<BasicEvent>(
  eventProvider: (interval) {
    return myEventsInInterval(interval);
  },
  // ...
);

If the events you want to display change, you just rebuild the widget and return different events from the callback.

If you have a fixed list of events, you can use the utility function eventProviderFromFixedList(myListOfEvents). If you have multiple event providers that you want to merge (i.e., display events from all event providers combined), use mergeEventProviders(myListOfEventProviders).

Deleted user commented

@JonasWanke Thank you for answer, I have tried it and it worked! This is enough for me but additionally if possible can I animate item when it gets removed or added? So that when state changes and newly added item appears with animation?

JonasWanke commented

Timetable doesn't support animations for added or removed events out of the box. However, you control the widgets for each event. Hence, you could wrap a BasicEventWidget in an AnimatedOpacity widget that fades in when it is first added. When the event is removed, you would first fade out the widget, and only then remove the actual event from Timetable.

https://flutter.dev/docs/cookbook/animation/opacity-animation

Deleted user commented

Timetable doesn't support animations for added or removed events out of the box. However, you control the widgets for each event. Hence, you could wrap a BasicEventWidget in an AnimatedOpacity widget that fades in when it is first added. When the event is removed, you would first fade out the widget, and only then remove the actual event from Timetable.

https://flutter.dev/docs/cookbook/animation/opacity-animation

That will work too! Thank you for all answers, this issue can be closed!

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