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
grpParameters = new Group( cmpURL, SWT.NONE );
		GridData gdGRPParameters = new GridData( GridData.FILL_HORIZONTAL );
		gdGRPParameters.horizontalSpan = 3;
		grpParameters.setLayoutData( gdGRPParameters );
		grpParameters.setLayout( glParameter );
		grpParameters.setText( Messages.getString( "TriggerDataComposite.Lbl.ParameterNames" ) ); 
		grpParameters.setVisible( bAdvanced );
		StyledText stParameters = new StyledText( grpParameters, SWT.WRAP );
		{
			GridData gd = new GridData( );
			gd.horizontalIndent = 2;
			gd.horizontalSpan = 3;
			gd.widthHint = 200;
			stParameters.setLayoutData( gd );
			stParameters.setText( Messages.getString( "TriggerDataComposite.Label.OptionalURLParameters" ) ); 
			StyleRange[] sr = {
					new StyleRange( 0,
							4,
							this.getForeground( ),
							this.getBackground( ),
							SWT.ITALIC ),
					new StyleRange( 4,
							stParameters.getText( ).length( ) - 4,
							this.getForeground( ),
							this.getBackground( ),
							SWT.NORMAL )
			};
			stParameters.setStyleRanges( sr );
			stParameters.setBackground( this.getBackground( ) );
		}