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
* @throws SemanticException
	 */
	protected void doDelectAction( DesignElement content )
			throws SemanticException
	{
		
		ElementDefn metaData = (ElementDefn) content.getDefn( );
		if ( !metaData.isContainer( ) )
			return;
		LevelContentIterator iter = new LevelContentIterator( module, content,
				1 );
		while ( iter.hasNext( ) )
		{
			DesignElement tmpContent = (DesignElement) iter.next( );
			ContentCommand cmd = new ContentCommand( module, tmpContent
					.getContainerInfo( ) );
			cmd.remove( tmpContent, false, true );
		}
	}
	/**
	 * Moves an element from one slot to another. The destination slot can be in
	 * the same element (unusual) or a different element (usual case.) Use the
	 * other form of this method to move an element within the same slot.
	 * 
	 * @param content
	 *            The element to move.
	 * @param toContainerInfor
	 *            the destination container information.
	 * @throws ContentException
	 */