Bug 188829 Move the item ,the trans of the model don't close.
1:New report design. 2:Add a Embedded image. 3:Add another imge , then drag the second imge to the first position. 4:Change the size of the first image. Expected: Image change the size. Now: Image size don't change.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/command/ContentCommandTest.java
assertEquals( dataSourceHandle.getName( ), dataSetHandle
				.getDataSourceName( ) );
		assertEquals( null, dataSetHandle.getDataSource( ) );
		iter = dataSourceHandle.clientsIterator( );
		assertEquals( false, iter.hasNext( ) );
		designHandle.getCommandStack( ).undo( );
		iter = dataSourceHandle.clientsIterator( );
		assertEquals( dataSetHandle, iter.next( ) );
		assertEquals( dataSourceHandle.getName( ), dataSetHandle
				.getDataSourceName( ) );
		assertEquals( dataSourceHandle, dataSetHandle.getDataSource( ) );
	}
	private void createDataSourceAndDataSet( ) throws Exception
	{
		designHandle = createDesign( );
		ScriptDataSourceHandle dataSourceHandle = designHandle
				.getElementFactory( ).newScriptDataSource( "dataSource" );
		ScriptDataSetHandle dataSetHandle = designHandle.getElementFactory( )
				.newScriptDataSet( "dataSet" );
		designHandle.getDataSources( ).add( dataSourceHandle );
		designHandle.getDataSets( ).add( dataSetHandle );
		dataSetHandle.setDataSource( dataSourceHandle.getName( ) );
	}
	/**
	 * Test after delete a style, whether references on the deleted contented
	 * were adjusted correctly.
	 * 
	 * Test case:
	 * 
	 * <ul>