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How to get notified, that the DataLayer has finished loading data [message #1809785]

Tue, 23 July 2019 12:03

Klaus Reger

Messages: 13
Registered: December 2016

Junior Member

Hello,

I am new to Nattable.

I want to programmatically select all rows, that are displayed in a Table.
Therefore, I need to know that the DataLayer is finished, integrating all data from the GlazedListsEventQueue, if my understanding of the internal function is right.

How can I archieve this kind of information?

Thanks in advance,

Klaus

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Re: How to get notified, that the DataLayer has finished loading data [message #1809788 is a reply to message #1809785]

Tue, 23 July 2019 12:42

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

Never heard about a GlazedListsEventQueue so I am not sure what you are talking about. The DataLayer handles what is provided. So there is no event that would indicate any loading mechanism. If you implement a data loading mechanism then you have to fire an event once the operation is done.

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Re: How to get notified, that the DataLayer has finished loading data [message #1809840 is a reply to message #1809788]

Wed, 24 July 2019 14:03

Klaus Reger

Messages: 13
Registered: December 2016

Junior Member

From the Documentation:

Quote:

GlazedListsEventLayer
This layer is meant to be used if the backing data source is a GlazedLists instance. Its acts as a listener for the list insert/delete/update events and fires corresponding NatTable events. Hence, the table knows to repaint itself when the underlying data changes.

How can I detect, when the changes in the data-layer are merged in, ore more exactly, when all data is loaded into the NatTable?

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Re: How to get notified, that the DataLayer has finished loading data [message #1809843 is a reply to message #1809840]

Wed, 24 July 2019 14:29

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

Ah you mean the GlazedListsEventLayer not queue.

That layer sends update events all 100ms if a list change happens. There is no way to find out when loading or changes are completely done.

NatTable is a framework for visualizing data, not for loading data. And from its virtual nature it only handles what should be shown.

So I am not sure what you request, but I suppose it is not supported out of the box.

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