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.
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/script/JSEditor.java
{
		this.editor = editor;
	}
	public Object[] getElements( Object inputElement )
	{
		List elements = new ArrayList( );
		if ( inputElement instanceof ExtendedItemHandle )
		{
			int selectedIndex = editor.cmbExpList.getSelectionIndex( );
			if ( selectedIndex >= 0 )
			{
				String scriptName = editor.cmbExpList.getItem( editor.cmbExpList.getSelectionIndex( ) );
				ExtendedItemHandle extHandle = (ExtendedItemHandle) inputElement;
				List methods = extHandle.getMethods( scriptName );
				if ( methods != null )
				{
					elements.add( 0,
							Messages.getString( "JSEditor.cmb.NewEventFunction" ) ); 
					elements.addAll( methods );
				}
			}
		}
		return elements.toArray( );
	}
	public void dispose( )
	{
	}
	public void inputChanged( Viewer viewer, Object oldInput, Object newInput )
	{
		if ( newInput != null )