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
protected transient Button btnStepSize = null;
	protected transient Button btnStepNumber = null;
	
	protected transient Button btnStepAuto = null;
	protected transient TextEditorComposite txtStepSize = null;
	protected transient Label lblUnit = null;
	protected transient Combo cmbScaleUnit = null;
	protected transient Label lblStepNumber = null;
	protected transient Spinner spnStepNumber = null;
	protected transient Button btnShowOutside = null;
	public AbstractScaleSheet( String title, ChartWizardContext context )
	{
		super( title, context, true );
	}
	protected Composite getComponent( Composite parent )
	{
		ChartUIUtil.bindHelp( parent, ChartHelpContextIds.POPUP_AXIS_SCALE );
		Composite cmpContent = new Composite( parent, SWT.NONE );
		{
			GridLayout glContent = new GridLayout( 4, false );
			glContent.marginHeight = 10;
			glContent.marginWidth = 10;
			glContent.horizontalSpacing = 5;
			glContent.verticalSpacing = 10;
			cmpContent.setLayout( glContent );
		}
		Group grpScale = new Group( cmpContent, SWT.NONE );
		{
			GridData gdGRPScale = new GridData( GridData.FILL_BOTH );
			gdGRPScale.horizontalSpan = 4;