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
String triggerType = cmbTriggerType.getText( );
			if ( cmbActionType.getSelectionIndex( ) == 0 )
			{
				cmbTriggerType.unmarkSelection( triggerType );
				Object trigger = triggersMap.get( triggerType );
				if ( trigger != null )
				{
					triggersMap.remove( triggerType );
					triggersList.remove( trigger );
				}
			}
			else
			{
				cmbTriggerType.markSelection( triggerType );
			}
			cmbTriggerType.setText( triggerType );
			switchUI( );
		}
		else if ( e.getSource( ).equals( btnBaseURL ) )
		{
			try
			{
				if ( wizardContext != null )
				{
					sBaseURL = wizardContext.getUIServiceProvider( )
							.invoke( getHyperlinkBuilderCommand( ),
									sBaseURL,
									wizardContext.getExtendedItem( ),
									null );
				}