Bug 151960 Library element popup menu display is wrong.
1:Creat a libray, add a table to this libray. 2:public this library. 3:Creat a report design. 4:Open the library explore, drag the table to the layout editor. 5:Select the table row, copy the selection row. 6:Select other row, clik the right button of the mouse to popup the menu . The result:Paste action and insert copied column action is highlight.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ColumnBandInsertAction.java
TableRow.CONTENT_SLOT );
	}
	/**
	 * Inserts a new cell to the given column position of rows in the given
	 * gruop.
	 * 
	 * @param group
	 *            the table group
	 * @param columnIndex
	 *            the 0-based column number
	 * @throws SemanticException
	 */
	private void insertCellsInGroup( GroupHandle group, int columnIndex )
			throws SemanticException
	{
		assert group != null;
		int slotCount = group.getDefn( ).getSlotCount( );
		for ( int i = 0; i < slotCount; i++ )
		{
			SlotHandle slot = group.getSlot( i );
			for ( int j = 0; j < slot.getCount( ); j++ )
			{
				DesignElementHandle content = slot.get( j );
				if ( content instanceof RowHandle )
					insertCell( (RowHandle) content, columnIndex );
			}
		}
	}
}