Bug 192349 The column selected disappears when you reclick the downward arrow [0001]
Description: The column selected disappears when you reclick the downward arrow. Build number: 2.2.0.v20070613-1211 Steps to reproduce: 1, New a table binding to a data set, add an Aggregation, select one column from the "Data Field" dropdown list, click the downward arrow again. Expected result: The column selected is still there. Actual result: The column selected disappears. Error log: N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
{
			createAggregateSection( composite );
		}
		else
		{
			createCommonSection( composite );
		}
	}
	public void initDialog( )
	{
		if ( getBinding( ) == null )
		{
			setTypeSelect( dataTypes[0] );
			this.newBinding = StructureFactory.newComputedColumn( getBindingHolder( ),
					isAggregate( ) ? DEFAULT_AGGREGATION_NAME
							: DEFAULT_ITEM_NAME );
			setName( this.newBinding.getName( ) );
		}
		else
		{
			setName( getBinding( ).getName( ) );
			setDisplayName( getBinding( ).getDisplayName( ) );
			setTypeSelect( DATA_TYPE_CHOICE_SET.findChoice( getBinding( ).getDataType( ) )
					.getDisplayName( ) );
			setDataFieldExpression( getBinding( ).getExpression( ) );
		}
		if ( this.getBinding( ) != null )
		{
			this.txtName.setEnabled( false );
		}