Bug 179687 Every cube's dimensions can be used by one x-tab[1102]
Description: Do not allowed other cube's dimension using in the x-tab which is not using that cube[1102] Build number: 2.2.0.v20070328-0630 Steps to reproduce: 1, New two cubes, cube1 and cube2 2, Create a x-tab using cube1 3, Drag the dimension of cube2 to x-tab Expected result: The step3's operation should be forbidden Actual result: All the dimensions can be dragged into the x-tab Error log:
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/model/CrosstabHandleAdapter.java
* Use the old model add to model list, so the no new editpart creat
	 * 
	 * @param list
	 * @param adapter
	 */
	private void addToModel( List list, BaseCrosstabAdapter adapter )
	{
		if ( list.contains( adapter ) )
		{
			return;
		}
		else if ( oldModelList.contains( adapter ) )
		{
			int index = oldModelList.indexOf( adapter );
			BaseCrosstabAdapter copy = (BaseCrosstabAdapter) oldModelList.get( index );
			list.add( adapter.copyToTarget( copy ) );
		}
		else
		{
			list.add( adapter );
		}
	}
	private CrosstabReportItemHandle getCrosstabReportItemHandle( )
	{
		return (CrosstabReportItemHandle) getCrosstabItemHandle( );
	}
	/**
	 * DefaultCrocsstabCellAdapterFactory
	 */
	protected static class DefaultCrocsstabCellAdapterFactory implements