Bug 153523 OK button in parameter dialog is enabled without default value in combo-box
Description: OK button in parameter dialog is enabled without default value in combo-box Steps to reproduce: 1. New a report parameter, combo-box. 2. Click New button, input abc as value, click OK 3. Set abc as default value and close Edit Parameter dialog. 4. New a data source and dataset 5. Edit the parameter, remove abc value and import values from dataset Expected result: OK button is disabled for there is no default value. Actual result: OK button is enabled.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
else
				{
					if ( Boolean.valueOf( defaultValue ).booleanValue( ) )
					{
						defaultValueChooser.select( 1 );
					}
					else
					{
						defaultValueChooser.select( 2 );
					}
				}
			}
			else
			{
				if ( DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX.equals( getSelectedControlType( ) )
						&& defaultValue != null )
				{
					defaultValueEditor.setText( defaultValue );
				}
			}
			refreshValueTable( );
		}
		else
		{
			refreshDataSets( );
			if ( inputParameter.getDataSetName( ) != null )
			{
				dataSetChooser.setText( inputParameter.getDataSetName( ) );
			}
			refreshColumns( false );