Bug 164070 Support widows/orphans properties on text item
Support widows/orphans properties on block text item(label, text, data etc), About the definition of widows/orphans, please refer to CSS spec.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/api/DesignElementHandleTest.java
assertFalse( designHandle.getMasterPages( ).canContain( label ) );
		
		
		MasterPageHandle page = designHandle.getElementFactory( )
				.newGraphicMasterPage( null );
		assertTrue( designHandle.canContain( ReportDesign.PAGE_SLOT, page ) );
		assertTrue( designHandle.getMasterPages( ).canContain( page ) );
		designHandle.getMasterPages( ).add( page );
		assertTrue( designHandle.canContain( ReportDesign.PAGE_SLOT, page ) );
		assertTrue( designHandle.getMasterPages( ).canContain( page ) );
		
		assertTrue( designHandle.getComponents( ).canContain( label ) );
		assertTrue( designHandle.getComponents( ).canContain(
				ReportDesignConstants.GRID_ITEM ) );
		assertTrue( designHandle.canContain( ReportDesign.COMPONENT_SLOT,
				ReportDesignConstants.GRID_ITEM ) );
		designHandle.getComponents( ).add( label );
		assertTrue( designHandle
				.canContain( ReportDesign.COMPONENT_SLOT, label ) );
		designHandle.getComponents( ).canContain(
				ReportDesignConstants.GRID_ITEM );
		
		TableHandle table = designHandle.getElementFactory( ).newTableItem(
				"table1", 3, 1, 1, 1 );
		RowHandle row = (RowHandle) table.getDetail( ).get( 0 );
		CellHandle cell = (CellHandle) row.getCells( ).get( 0 );
		assertFalse( cell.canContain( CellHandle.CONTENT_SLOT, table ) );
	}
	/**
	 * Tests the function to retrieve the path of an element. The path begins