Bug 120068 TOC Item Expression is added automatically when adding the group key
Description: TOC Item Expression is added automatically when adding the group key Steps to reproduce: 1.Add a table binding with the dataset 2.Choose the table, add a group(say goupkey:row["CUSTOMERNUMBER"]) 3.Click "group" to invoke "Edit Group" dialog Expected result: Nothing in TOC Item Expression Actual result: The group key (row["CUSTOMERNUMBER"]) is added to the TOC Item Expression
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
{
			includeHeader.setSelection( false );
			includeFooter.setSelection( false );
		}
		if ( DesignChoiceConstants.SORT_DIRECTION_ASC.equals( inputGroup.getSortDirection( ) ) )
		{
			ascending.setSelection( true );
		}
		else
		{
			descending.setSelection( true );
		}
		List list = new ArrayList( 1 );
		list.add( inputGroup );
		
		if ( inputGroup.getTocExpression( ) != null )
		{
			oldExpr = inputGroup.getTocExpression( );
			exprEditor.setText( oldExpr );
		}
		return true;
	}
	/**
	 * Sets the model input.
	 * 
	 * @param input
	 */
	public void setInput( Object input )
	{
		Assert.isTrue( input instanceof GroupHandle );