Bug 136833 Group key is affected by Generate All button in group.
Description: Group key is affected by Generate All button in group. Steps to reproduce: 1. Insert a list 2. Add a group, select a group key, then click Generate All button. Actual result: Group key disappeared, you have to reset it.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
{
			
			
			handle.addElement( DesignElementFactory.getInstance( inputGroup.getModuleHandle( ) )
					.newCell( ),
					RowHandle.CONTENT_SLOT );
		}
		return handle;
	}
	private void setKeyExpression( String key )
	{
		keyChooser.deselectAll( );
		key = StringUtil.trimString( key );
		if ( StringUtil.isBlank( key ) )
		{
			keyChooser.setText( "" ); 
			return;
		}
		for ( int i = 0; i < columnList.size( ); i++ )
		{
			if ( key.equals( DEUtil.getExpression( columnList.get( i ) ) ) )
			{
				keyChooser.select( i );
				return;
			}
		}
		keyChooser.setText( key );
	}
	/**
	 * Reset interval