Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
{
				if ( groupKey.equals( DEUtil.getExpression( columnList.get( i ) ) ) )
				{
					index = i;
					break;
				}
			}
			if ( index != -1 )
			{
				keyChooser.select( index );
			}
			else
			{
				keyChooser.setText( groupKey );
			}
		}
		else
		{
			getOkButton( ).setEnabled( false );
		}
		index = getIntervalTypeIndex( inputGroup.getInterval( ) );
		intervalType.select( index );
		if ( index == 0 )
		{
			intervalRange.setEnabled( false );
		}
		else
		{
			intervalRange.setSelection( inputGroup.getIntervalRange( ) );
		}