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
try
			{
				addPage( pagedef.createPage( ), pagedef.displayName );
			}
			catch ( Exception e )
			{
				error = true;
			}
		}
		if ( error )
		{
			setActivePage( "org.eclipse.birt.report.designer.ui.editors.xmlsource" ); 
		}
	}
	/**
	 * Add a IReportEditorPage to multipage editor.
	 * 
	 * @param page
	 * @param title
	 * @return
	 * @throws PartInitException
	 */
	public int addPage( IReportEditorPage page, String title )
			throws PartInitException
	{
		int index = super.addPage( page );
		if ( title != null )
		{
			setPageText( index, title );
		}