FilteredList.indexOf(item) returns old index

[tonosama-atlacatl]

I see that this function is based on the source list (_srcList). But, this creates a problem if we're using a filteredList as data and we want to retain the checkbox selections after applying a filter and wanting to sort a column.

Could we condition this just like get length? get length => _filter.length==0 ? _srcList.length : _viewList.length; So, if there is no filter, only deal with the original _srcList, if there is one, then _viewList.

Or, we add separate function that deal with _viewList only.

The problem I'm seeing is that I started with 300 rows, then I applied a filter that yields 10 rows, but when I try to select any row and then sort it with a column, the indexOf(item) always returns me the old index... like 287, when I'm only seeing 10 rows on the grid.

[cjkao]

                                                                                  The List implementation is demonstrated that we can have any customized List act as data source of grid, base on this idea, async data loading,  ‎data view are not necessary porting from original (slickgrid) version.                                                                                                                                     Would you like try a new List implementation that may fit this scenario?                                                                                                                                                                                                                                                                                                                                                                                     ‎

[tonosama-atlacatl]

Well, I can see the use of FilteredList where you keep two internal lists, one which is the original and the other a smaller version which is in view. It just seems like you already have all the mechanisms to do filtering with the filteredList, I'll hate to just create a new list that replicates ~80% of it, just to give me a look into the view list. I'm open to suggestions, I wanted to check with you before attempting something on slick_util.dart...

All I need is to be able to keep the row selection after applying a filter to a filteredList, and in order for me to do this based on your checkbox example, I have to query the list for an item's index. I can simply add the item function to both lists? or we can settle that if a filter is present, _viewList is always targeted. I'm not sure how extensive this might change things.

[cjkao]

OK, i see what you need, hmm...it is general and very useful in my imagination. I think we can add a optional function parameter to setKeyword() to change filter behavior

[tonosama-atlacatl]

would the optional parameter expose the viewList?

[tonosama-atlacatl]

K, I solved the issue by creating another version of "FilteredList" that exposes a function to locate: _viewList.indexOf