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NatTable getColumnIndexByPosition returns -1 before [message #1012478]

Thu, 21 February 2013 11:29

Alex Kipling
Messages: 211
Registered: July 2012

Senior Member

In my App NatTable#getColumnIndexByPosition() allways gives my -1.

Only, when the NatTable was painted once . it returns the correct Index.

natTable.configure();
natTable.getColumnIndexByPosition(2); // gives -1

What should I do with the Table to make getColumnIndexByPosition() return the right value?

[Updated on: Thu, 21 February 2013 11:30]

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012753 is a reply to message #1012478]

Fri, 22 February 2013 02:24

Dirk Fauth
Messages: 524
Registered: July 2012

Senior Member

Counter question: Why do you need to do position-index transition right after the creation of the instance?

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012788 is a reply to message #1012753]

Fri, 22 February 2013 03:27

Alex Kipling
Messages: 211
Registered: July 2012

Senior Member

In my app I am adding some renderers to the columns.

The renderers are passed as columnNumber-RendererObject pairs to the table.

I would like to attach the RendererObjects to the columns, independantly of the reordering, which is done by the table internally, so I would like to use positions instead of Indexes.

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012792 is a reply to message #1012788]

Fri, 22 February 2013 03:34

Dirk Fauth
Messages: 524
Registered: July 2012

Senior Member

What renderers are you adding? And why are you adding something to the NatTable outside the NatTable?

The NatTable framework is so flexible that there should be no need to add something additional from the outside. It sounds like what you really need is a special ICellPainter.

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012820 is a reply to message #1012792]

Fri, 22 February 2013 04:28

Alex Kipling
Messages: 211
Registered: July 2012

Senior Member

Dirk, my cellRendeerers are in fact ICellPainters.

I add them to the Table, because I am generating the table dynamically with different IDataProviders.

I do not know which Objects will be provided, only the IDataProvider knows, so the Objects are added externally.

What is about my question? What should i do to map the position to the Index before the table is painted?

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012829 is a reply to message #1012820]

Fri, 22 February 2013 04:50

Dirk Fauth
Messages: 524
Registered: July 2012

Senior Member

Then I would create a ILabelProvider that provides labels dependent on the IDataProviders.

Quote:

What is about my question? What should i do to map the position to the Index before the table is painted?

I don't know and would need to debug myself. Seems there are some calculations done regarding the x/y coordinates somewhere in the layer stack.

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Re: NatTable getColumnIndexByPosition returns -1 before [message #1012848 is a reply to message #1012829]

Fri, 22 February 2013 05:24

Alex Kipling
Messages: 211
Registered: July 2012

Senior Member

Thnx for help Dirk

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