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ColumnReorderEvent values incorrect [message #1059606]

Mon, 20 May 2013 19:14

Mark Proe

Messages: 34
Registered: July 2009

Member

Hello,

I am using a ColumnReorderLayer in my NatTable. I have added a listener to that layer so I can be notified when a ColumnReorderEvent happened.

For the most part, the TO COLUMN and FROM COLUMN values from the ColumnReorderEvent appear to be what I'd expect. However, when I drag a column to the end of my table, things go wrong. I am seeing an invalid TO COLUMN value. (For example, if I have 7 columns in my table...When I drag a column to the right of Column 7, I would expect to see a TO COLUMN of 7. But instead, I see a value of 5?)

Thanks,
Mark

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Re: ColumnReorderEvent values incorrect [message #1059679 is a reply to message #1059606]

Tue, 21 May 2013 07:52

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

Hi,

instead of relying on getBeforeToColumnPosition() you should work with the StructuralDiff objects.

The beforeColumnPosition is
a) the column position before the change applied
b) it is interpreted with inspecting another field reorderToLeftEdge

Working with the StructuralDiff objects will return the positions you expect.

columnReorderLayer.addLayerListener(new ILayerListener() {
			
	@Override
	public void handleLayerEvent(ILayerEvent event) {
		if (event instanceof ColumnReorderEvent) {
			System.out.println("BeforeToColumnPos: " + ((ColumnReorderEvent)event).getBeforeToColumnPosition());
			for (StructuralDiff diff : ((ColumnReorderEvent)event).getColumnDiffs()) {
				System.out.println("Diff " + diff.getDiffType() + ": " + diff.getAfterPositionRange().end);
			}
		}
	}
});

Greez,
Dirk

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Re: ColumnReorderEvent values incorrect [message #1059747 is a reply to message #1059679]

Tue, 21 May 2013 13:55

Mark Proe

Messages: 34
Registered: July 2009

Member

Dirk,

I am still seeing incorrect values using your method.

BeforeToColumnPos: 5
Diff DELETE: 0
Diff ADD: 5

I am moving my first column to the right of my seventh column. So I would expect to see a value of 7.

Again, the problem only seems to be when dragging to the rightmost edge of the table. Everything appears to be correct when dragging within the middle of the table.

Mark

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