Bug 172431 [eclipse3.3only]BPS17-4.5 Adding Date picker to input DateTime value for Axis Scale
In Axis Scale dialog, provide a Data picker next to the input box for convenience of inputting DataTime value.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/format/popup/AbstractScaleSheet.java
getScale( ).setStepNumber( spnStepNumber.getSelection( ) );
			setState( );			
		}
		else if ( event.widget.equals( btnShowOutside ) )
		{
			getScale( ).setShowOutside( btnShowOutside.getSelection( ) );
		}
		else if ( event.widget.equals( spnStepNumber ) )
		{
			getScale( ).setStepNumber( spnStepNumber.getSelection( ) );
		}
	}
	private String getValue( DataElement de )
	{
		if ( de instanceof DateTimeDataElement )
		{
			Date dt = ( (DateTimeDataElement) de ).getValueAsCalendar( )
					.getTime( );
			return _sdf.format( dt );
		}
		else if ( de instanceof NumberDataElement )
		{
			return ChartUIUtil.getDefaultNumberFormatInstance( )
					.format( ( (NumberDataElement) de ).getValue( ) );
		}
		return ""; 
	}
	private DataElement getTypedDataElement( String strDataElement )
	{
		NumberFormat nf = ChartUIUtil.getDefaultNumberFormatInstance( );