Bug 171501 When click the data set or data source, the focus is lost[0001]
Description: When click the data set or data source, the focus is lost[0001] Build number: 2.2.0.v20070124-0630 Steps to reproduce: 1, New a Sample datasource and data set 2, Click the data source or data set in Data Explorer 3, Press 'Delete' button on keyboard Expected result: The datasource or data set can be deleted successfully Actual result: The operation take no effect, and the datasource is gray. When choose the datasource again, the datasource is able to delete Error log:
UI/org.eclipse.birt.report.designer.ui.views/src/org/eclipse/birt/report/designer/ui/views/data/DataView.java
}
	/**
	 * Creates a new page in the pagebook for a particular part. This page will
	 * be made visible whenever the part is active, and will be destroyed with a
	 * call to <code>doDestroyPage</code>.
	 * 
	 * @param part
	 *            the input part
	 * @return the record describing a new page for this view
	 * @see #doDestroyPage
	 */
	protected PageRec doCreatePage( IWorkbenchPart part )
	{
		 Object page = part.getAdapter( DataViewPage.class );
		 if ( page instanceof IPageBookViewPage )
		 {
		 initPage( (IPageBookViewPage) page );
		
		 ( (IPageBookViewPage) page ).createControl( getPageBook( ) );
		 return new PageRec( part, (IPageBookViewPage) page );
		 }
		 return null;
	}
	/**
	 * Destroys a page in the pagebook for a particular part. This page was
	 * returned as a result from <code>doCreatePage</code>.
	 * 
	 * @param part
	 *            the input part
	 * @param pageRecord