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/LineAttributesComposite.java
cmbColor.setEnabled( bState & bEnableUI );
		}
		this.bEnabled = bState;
	}
	
	public boolean isAttributesEnabled( )
	{
		return this.bEnabled;
	}
	public void addListener( Listener listener )
	{
		vListeners.add( listener );
	}
	public void setLineAttributes( LineAttributes attributes )
	{
		if ( attributes == null )
		{
			
			attributes = AttributeFactory.eINSTANCE.createLineAttributes( );
		}
		laCurrent = attributes;
		
		if ( bEnableVisibility )
		{
			cbVisible.setSelection( laCurrent.isVisible( ) );
			boolean bUIEnabled = cbVisible.getSelection( );
			if ( bEnableStyles )
			{
				cmbStyle.setEnabled( bUIEnabled );
				lblStyle.setEnabled( bUIEnabled );