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
DesignElementHandle handle = designHandle.findElement( "bodyLabel1" ); 		
		SlotHandle slotHandle = designHandle.getComponents( );
		handle.moveTo( slotHandle.getElementHandle( ),
				ReportDesign.COMPONENT_SLOT );
		assertEquals( handle.getModuleHandle( ), handle.getContainer( ) );
		assertEquals( ReportDesign.COMPONENT_SLOT, handle
				.getContainerSlotHandle( ).getSlotID( ) );
		
		Iterator iterator = handle.getPropertyIterator( );
		int count = 0;
		for ( ; iterator.hasNext( ); iterator.next( ) )
			count++;
		
		handle.dropAndClear( );
		assertNull( handle.getContainer( ) );
		handle = designHandle.findElement( "bodyLabel1" ); 		
		assertNull( handle );
		handle = (LabelHandle) designHandle.findElement( "bodyLabel5" ); 
		assertEquals( "bodyLabel5", handle.getDisplayLabel( ) ); 
		assertEquals(
				"bodyLabel5", handle.getDisplayLabel( DesignElement.USER_LABEL ) ); 
		assertEquals(
				"bodyLabel5", handle.getDisplayLabel( DesignElement.SHORT_LABEL ) ); 
		assertEquals(
				"bodyLabel5(\"Fifth Label in body.\")", handle.getDisplayLabel( DesignElement.FULL_LABEL ) ); 
	}
	/**
	 * Tests for containment.
	 *