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
{
							IScriptEditor viewer = editor.getScriptEditor( );
							if ( viewer instanceof AbstractTextEditor )
							{
								AbstractTextEditor editor = (AbstractTextEditor) viewer;
								IDocument doc = ( editor.getDocumentProvider( ) ).getDocument( viewer.getEditorInput( ) );
								int length = doc.getLength( );
								doc.replace( length, 0, signature );
								editor.selectAndReveal( length + 1,
										signature.length( ) );
							}
						}
						catch ( BadLocationException e )
						{
							logger.log(Level.SEVERE, e.getMessage(),e);
						}
						editor.cmbSubFunctions.select( 0 );
					}
				}
			}
		}
	}
	
	
	private String createSignature( IMethodInfo info )
	{
		StringBuffer signature = new StringBuffer( );
		String javaDoc = info.getJavaDoc( );
		if ( javaDoc != null && javaDoc.length( ) > 0 )
		{