refetchEvents when calendar Is hidden results in events disappearing.

[kylethielk]

JSBin: http://jsbin.com/mosuqujawa/edit?html,js,output

Using JSBin click the "Run Test" button. This will:

1. Hide the Calendar.
2. fullCalendar('refetchEvents')
3. Show the Calendar.
4. fullCalendar('render')

The calendar will be empty of events. If you navigate between views or forward/backward in time events appear again.

I was previously on 2.0.2 and this was not present, upgrading to 2.4 shows this behavior.

[kylethielk]

Walking through the code it looks like in renderView() the following check is made:

if (!currentView.displaying ||
    !date.isWithin(currentView.intervalStart, currentView.intervalEnd)) 

The following will result in the events not ever being re-rendered after calendar is shown:

1. Hide Calendar
2. refetchEvents() calls destoryEvents()
3. Once events are eventually retrieved from datasource renderEvents() is eventually called.
4. renderEvents() checks to see if calendar is visible, since it is not nothing is rendered, calendar is currently empty.
5. Show Calendar.
6. Call fullCalendar('render') which eventually calls renderView(), since currentView.displaying == true && date.isWithin(currentView.intervalStart, currentView.intervalEnd) == true the code to render the events is never called.

I have worked around this by changing the check from:

if (!currentView.displaying ||
    !date.isWithin(currentView.intervalStart, currentView.intervalEnd)) 

to

    if (
    !currentView.isEventsRendered ||
    !currentView.displaying ||
    !date.isWithin(currentView.intervalStart, currentView.intervalEnd)) 

and it is working fine.

[dhawkKD]

I am trying to filter out events on some conditions by default it is coming as per expectation but after clicking on controls to filter out events it doesn't show any event. and If I move to next month and then comes back the current month it shows event. Tried the solution given above but didn't get any success.
This issue is actually coming in IE-11 only.

[arshaw]

i confirmed @kylethielk's original case, thanks. i have not yet dug into the code or proposed solutions

[caseyjhol]

This appears to have been resolved in v2.8.0 (most likely due to the removal of destroyEvents).

JSBin: http://jsbin.com/buvebesayi/edit?html,js,output

[arshaw]

thanks for checking that @caseyjhol. closing this issue