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/TriggerDataComposite.java
gd.horizontalAlignment = GridData.END;
			btnScriptExpBuilder.setLayoutData( gd );
			btnScriptExpBuilder.setImage( UIHelper.getImage( "icons/obj16/expressionbuilder.gif" ) ); 
			btnScriptExpBuilder.addSelectionListener( this );
			btnScriptExpBuilder.setToolTipText( Messages.getString( "DataDefinitionComposite.Tooltip.InvokeExpressionBuilder" ) ); 
			btnScriptExpBuilder.getImage( )
					.setBackground( btnScriptExpBuilder.getBackground( ) );
		}
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		cmpTooltip = new Composite( grpValue, SWT.NONE );
		cmpTooltip.setLayout( new GridLayout( 3, false ) );