Bug 198504 The same name aggregation should be hint in dialog[0001]
Description: The same name aggregation should be hint in dialog[0001] Step: 1.New a datasource, dataset, table and binding the dataset. 2.New a aggregation column binding on table named aggr1. 3.Drop a aggregation item into table and set the named as aggr1. 4.Click OK Actual result: Pop up an error message said that the name is exist. Expected result: It can hint in dialog when input the same name, but pop up an error dialog
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dialogs/CrosstabBindingDialogHelper.java
protected static final IChoice[] DATA_TYPE_CHOICES = DATA_TYPE_CHOICE_SET.getChoices( null );
	protected String[] dataTypes = ChoiceSetFactory.getDisplayNamefromChoiceSet( DATA_TYPE_CHOICE_SET );
	private Text txtName, txtFilter, txtExpression;
	private Combo cmbType, cmbFunction, cmbDataField, cmbAggOn;
	private Button btnTable, btnGroup;
	private Composite argsComposite;
	private String name;
	private String typeSelect;
	private String expression;
	private String functionName;
	private Map argsMap = new HashMap( );
	private Composite composite;
	private Text txtDisplayName;
	private ComputedColumn newBinding;
	public void createContent( Composite parent )
	{
		composite = parent;
		( (GridLayout) composite.getLayout( ) ).numColumns = 3;
		GridData gd = new GridData( GridData.FILL_BOTH );
		gd.widthHint = 380;
		if ( isAggregate( ) )
		{
			gd.heightHint = 300;
		}
		else
		{
			gd.heightHint = 150;
		}
		composite.setLayoutData( gd );
		new Label( composite, SWT.NONE ).setText( NAME );