Bug 131258 NewOdaDataSet is created when drop dataset from data explorer into layout in library
Details: NewOdaDataSet is created when drop dataset from data explorer into layout in library Setp: 1.New a library 2.Create a datasource and dataset 3.Drop dataset from Actual result: A new dataset named NewOdaDataSet is created. Exception result: The dataset is unnecessary to be created
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/palette/BasePaletteFactory.java
*/
		public boolean preHandleMouseDown( )
		{
			return false;
		}
	}
	/**
	 * Provides element building support for grid element.
	 */
	public static class GridToolExtends extends AbstractToolHandleExtends
	{
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.designer.internal.ui.editors.schematic.tools.IToolHandleExtends#preHandleMouseDown()
		 */
		public boolean preHandleMouseUp( )
		{
			ModuleHandle reportDesignHandle = SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( );
			
			DesignElementFactory factory = DesignElementFactory.getInstance( reportDesignHandle );
			String type = (String) getRequest( ).getNewObjectType( );
			GridHandle grid = null;
			if ( IReportElementConstants.AUTOTEXT_AUTHOR_PAGE_DATE.equals( type ) )
			{
				grid = factory.newGridItem( null, 3, 1 );
				try
				{
					List cellList = ( (RowHandle) grid.getRows( ).get( 0 ) ).getCells( )