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Reorder Column Groups inconsistent column position [message #1241210]

Fri, 07 February 2014 16:30

Jack L

Messages: 2
Registered: February 2014

Junior Member

Im having trouble reording group of columns. Required behaviour is to move entire group of columns (all sub-columns). I have two level columns, I set behaviour to unbreakable (which makes that column cannot be drag in between grouped columns). Groups are also collapsable (don't know if that change something).
I extended ColumnGroupHeaderReorderDragMode class and override fireMoveStartCommand and fireMoveEndCommand and it works first time I move the group, but second move is like positions are shifted and works only if offset actual position by one, which could be fine if after few column moves it goes back.. so it is inconsistent....
Also seems like dragFromGridColumnPosition/dragToGridColumnPosition start indexing from 1 not from 0 ... Am I missing something? Or maybe better way of doing it?

Code:
public class ColumnGroupHeaderReorderMultiDragMode extends ColumnGroupHeaderReorderDragMode {

private ColumnGroupModel groupModel;
private ColumnReorderLayer columnReorderLayer;
private ColumnGroup currentGroup;

public ColumnGroupHeaderReorderMultiDragMode(ColumnGroupModel model, ColumnReorderLayer columnReorderLayer){
super(model);
this.groupModel = model;
this.columnReorderLayer = columnReorderLayer;
}

@Override
protected void fireMoveStartCommand(NatTable natTable, int dragFromGridColumnPosition){
int columnIndex - natTable.getColumnIndexByPosition(dragFromGridColumnPosition);
currentGroup = groupModel.getColumnIndexByPosition(dragFromGridColumnPosition);
currentGroup.setCollapsed =false;
}

protected void fireMoveEndStartCommand(NatTable natTable, int dragToGridColumnPosition){
List<Integer> currentColumnsPositions = new ArrayList<Integer>();
for(int column:currentGroup.getMembers()){
currentColumnPositions.add(columnReorderLayer.getColumnPositionByIndex(column));
}
natTable.doCommand(new ReorderColumnsAndGroupsCommand(natTable,currentColumnsPositions, dragToGridColumnPosition));
}
}

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Re: Reorder Column Groups inconsistent column position [message #1241316 is a reply to message #1241210]

Fri, 07 February 2014 20:00

Dirk Fauth

Messages: 2903
Registered: July 2012

Senior Member

Sorry but I don't understand what the issue is. When I open the Column groups example in the NatTable examples app, dragging column groups is working the way you describe.

I also don't understand why you are extending and overriding ColumnGroupHeaderReorderDragMode.

Quote:

Also seems like dragFromGridColumnPosition/dragToGridColumnPosition start indexing from 1 not from 0

I don't know your composition, but I guess that is because the handling is started with the grid positions. And in a typical grid the row header is at index 0 when looking from the NatTable to it.

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Re: Reorder Column Groups inconsistent column position [message #1245324 is a reply to message #1241316]

Thu, 13 February 2014 16:43

Jack L

Messages: 2
Registered: February 2014

Junior Member

Hello Dirk,
It seems like my team don't create column groups correctly, because there are not moved correctly (only one column from group is moving), and then I tried to fix that by overriding ColumnGroupHeaderReorderDragMode where I found some inconsistency with indexing, because sometimes it was off by 1 like (I had add 1 to make correct column moved) - but all of that is due to issues with our grid wrapper and the way column groups are implemented it seems like (it works on basic examples from nattable)

We will fix it at the source ... and glad it is build that way, the we should not do anything Smile

Thanks
Jack

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