Bug 201042 [Accessibility]Chart scritp should not add by auto when click the down in keyboard[17]
Description: Chart scritp should not add by auto when click the down in keyboard[0704] Step: 1. New a chart and switch to script view. 2. Let the point on the script function selection. 3. Click the down on keyboard. Actual result: A function will add by auto. Expected result: Customer can not select the function under the second function by keyboard, and it should not be added by auto.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/composites/GanttLineAttributesComposite.java
}
		this.bEnableStyles = bEnableStyles;
		this.bEnableWidths = bEnableWidths;
		this.bEnableVisibility = bEnableVisibility;
		init( );
		placeComponents( );
	}
	public GanttLineAttributesComposite( Composite parent, int style,
			LineAttributes laCurrent, boolean bEnableWidths,
			boolean bEnableStyles, boolean bEnableVisibility,
			boolean bEnableColor )
	{
		super( parent, style );
		this.laCurrent = laCurrent;
		if ( laCurrent == null )
		{
			
			this.laCurrent = AttributeFactory.eINSTANCE.createLineAttributes( );
		}
		this.bEnableStyles = bEnableStyles;
		this.bEnableWidths = bEnableWidths;
		this.bEnableVisibility = bEnableVisibility;
		this.bEnableColor = bEnableColor;
		init( );
		placeComponents( );
	}
	/**
	 * 
	 */
	private void init( )