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/src/org/eclipse/birt/report/model/command/AbstractContentCommand.java
* Containment infromation.
	 */
	protected final ContainerContext focus;
	/**
	 * Where to send the event.
	 */
	protected ContentElementInfo eventTarget;
	public AbstractContentCommand( Module module, DesignElement obj )
	{
		super( module, obj );
		focus = null;
	}
	/**
	 * Constructs the content command with container element.
	 * 
	 * @param module
	 *            the module
	 * @param containerInfo
	 *            the container infor
	 */
	public AbstractContentCommand( Module module, ContainerContext containerInfo )
	{
		super( module, containerInfo.getElement( ) );
		this.focus = containerInfo;
		eventTarget = getEventTarget( );
	}
	/**
	 * Adds a new element into a container and specifies the position in the
	 * container. Virtually all elements must reside in a container. Containers
	 * are identified by a container ID. The application creates the element