Bug 142691 Switch between the window of two design file. The display of the binding list is abnormal.
Description: Switch the window of between two design file. The display of the binding list is abnormal. Step to reproduce: please refer to the screenshot Actual result: The first design files binding data set list will display the second ones.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
{
			return;
		}
		Object designOutLinePage = activePageInstance.getAdapter( IContentOutlinePage.class );
		outlinePage.setActivePage( (IPageBookViewPage) designOutLinePage );
	}
	private Object getDataPage( )
	{
		if ( dataPage == null || dataPage.isDisposed( ) )
		{
			dataPage = new ReportMultiBookPage( );
		}
		return dataPage;
	}
	private Object getOutlinePage( )
	{
		if ( outlinePage == null || outlinePage.isDisposed( ) )
		{
			outlinePage = new ReportMultiBookPage( );
		}
		return outlinePage;
	}
	private Object getPalettePage( )
	{
		if ( fPalettePage == null || fPalettePage.isDisposed( ) )
		{
			fPalettePage = new ReportMultiBookPage( );
		}
		return fPalettePage;
	}