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/RowBandInsertAction.java
*/
	protected boolean canInsert( RowOperationParameters parameters )
	{
		int destIndex = parameters.getDestIndex( );
		SlotHandle slotHandle = getSlotHandle( parameters );
		if ( slotHandle == null )
			return false;
		if ( destIndex < 0 || destIndex > slotHandle.getCount( ) )
			return false;
		if ( destIndex == 0 )
			return true;
		
		
		RowHandle destHandle = (RowHandle) slotHandle.get( destIndex - 1 );
		if ( !containsRowSpan( destHandle ) && isRectangleArea( destHandle ))
			return true;
		return false;
	}
	/**
	 * Inserts source table row below or above target table row. Table row can
	 * be inserted in position from zero to count of rows.
	 * 
	 * @param copiedRow
	 *            the copied table row.
	 * @param parameters
	 *            parameters needed by insert operation.
	 * @throws SemanticException
	 * @throws Exception
	 */
	protected void doInsert( RowOperationParameters parameters )