Bug 135252 [Regression]Focus will lost when switching to script view
Steps to reproduce: 1.Select a data set 2.Click "Script" tab Expected result: Script view for the data set shows up Actual result: The focus on data set lost
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
if ( editor != null )
				{
					nestableService.activateKeyBindingService( editor.getEditorSite( ) );
				}
				else
				{
					nestableService.activateKeyBindingService( null );
				}
			}
			else
			{
			}
		}
	}
	private void updateRelatedViews( )
	{
		updatePaletteView( getCurrentPageInstance( ) );
		updateOutLineView( getCurrentPageInstance( ) );
		updateDateView( getCurrentPageInstance( ) );
	}
	private boolean prePageChanges( Object oldPage, Object newPage )
	{
		boolean isNewPageValid = true;
		if ( oldPage instanceof IReportEditorPage
				&& newPage instanceof IReportEditorPage )
		{
			isNewPageValid = ( (IReportEditorPage) newPage ).onBroughtToTop( (IReportEditorPage) oldPage );