Hi,
there's JIRA issue tracking this:
https://javafx-jira.kenai.com/browse/RT-32091
I was thinking about using FXCollections.sort() for this purpose, but I
realized this is not going to work.
As FilteredList is an unmodifiable view of it's source list, the only
thing you can sort the original list or a SortedList in the chain. The
catch is that you don't know the element class of the original list nor
the SortedList, so there's a problem with Comparator. Or even with the
same type, the element could be theoretically filtered through a
TransformationList that changes the element in a way their sort order
would be different (like String -> String which does some translation).
Means only the developer (who created the FilteredList) is capable of
sorting the FilteredList by placing a SortedList with appropriate
Comparator below or on top of the FilteredList & binding the Comparator
of the TableView to it.
Of course, TableView could do this itself, but as it was discussed
before, this creates a problem of model-view indices, so it was decided
that a developer must do the setup.
In other words, if you have any unmodifiable ObservableList /
TransformationList, you can enable sorting just be wrapping it into a
SortedList before passing it to the TableView.
Regards,
-Martin
On 08/16/2013 11:04 AM, Jonathan Giles wrote:
This is a FilteredList issue that Martin Sladecek is looking into.
-- Jonathan
Sent from a touch device. Please excuse my brevity.
"Martin Klähn" <grazer...@gmail.com> wrote:
I've created https://javafx-jira.kenai.com/browse/RT-32391 for the
problem
that TableView is not sortable with a FilteredList
- Martin
On Mon, Aug 12, 2013 at 1:14 PM, Martin Klähn <grazer...@gmail.com>
wrote:
Sorry for the link I had that in the original mail but by adding it
seems
to have vanished.
So I had a chance to test the TableView with SortedList and
FilteredList
with b102.
Sorting is enabled with SortedList but not with FilteredList. I guess
you'll want a issue for filtering with FilteredList?
However I've run into a range of Exception in conjunction with
SortedLists
created from FilteredList as item in TableView and user ordering of
Columns
and user based changes of the FilteredList.predicate. They range from
ArrayIndexOutOfBoundsException out of SortedList.java:313 to
IndexOutOfBoundsException caused by TextInputControlBehavior.java:334
and
NullPointerException in SortedList.java:247.
I've built a small test class a user has to interact with. We've
searched
for some automatic way of reproducing the error to no avail (up to
now).
See https://www.dropbox.com/s/bfhqm0xk4y9r1oz/FilterSortedList.java
Steps to reproduce:
1) change column sort of any column
2) type two characters in the textfield below which will change the
FilterList.predicate based on String.startsWith-condition.
Regards,
Martin
On Thu, Aug 8, 2013 at 10:30 PM, Jonathan Giles
<jonathan.gi...@oracle.com
wrote:
Funny you should ask about this - I just blogged about SortedList
and
TableView the other day, over at FXExperience:
http://fxexperience.com/2013/**08/returning-a-tableview-back-**
to-an-unsorted-state-in-**javafx-8-0<http://fxexperience.com/2013/08/returning-a-tableview-back-to-an-unsorted-state-in-javafx-8-0>
Of course, I can see that you've already read that post (I see a
comment
from the code in my post in your code below). What might have been
missed
is that I noted earlier on in the blog post I had to make a few
small
changes to properly get SortedList support in TableView, so you'll
want to
try again in b102 (or b103).
Regarding your use of FilteredList as well - I've not tried this at
all,
but I'll add it to my todo list to investigate today. I imagine
there might
be a bug somewhere. Whatever I find will probably make for a good
post at
FXExperience, so keep an eye out there too.
Thanks, and if you do run into further issues, please don't hesitate
to
file bugs. In general, if TableView isn't sorting then something is
going
really wrong!
-- Jonathan
On 8/08/2013 11:17 p.m., Martin Klähn wrote:
Hi guys,
I'm working on a business application that makes use of TableView
and I'm
working with JDK 8 build b101.
Displaying the data works like a charm. Row sorting for ordinary
ObservableLists is fine too.
Then I've set TableView.items to FilteredList and row sorting was
disabled.
replacing TableView.item with SortedList does not allow row sorting
as
well. Binding the comparator of SortedList to the
TableView.comparator
has
no effect either.
// row sorting possible
//final TableView<Integer> tableView = new
TableView<>(FXCollections.**observableArrayList(2, 1, 3));
// row sorting not possible (SortedList)
// create a TableView with the sorted list set as the items it will
show
// bind the sortedList comparator to the TableView comparator
//SortedList<Integer> sortedList = new
SortedList<>(FXCollections.**observableArrayList(2, 1, 3));
//sortedList.**comparatorProperty().bind(**
tableView.comparatorProperty()**);
//final TableView<Integer> tableView = new TableView<>(sortedList);
// row sorting not possible (FilteredList)
//FilteredList<Integer> filteredList = new
FilteredList<>(FXCollections.**observableArrayList(2, 1, 3), (e) ->
true);
//final TableView<Integer> tableView = new TableView<>(filteredList
);
// Don't forget to define columns!
final TableColumn<Integer, Number> integerColumn = new
TableColumn<>("Integer");
final TableColumn<Integer, String> hexColumn = new
TableColumn<>("Integer
Hex");
integerColumn.**setCellValueFactory(javaClass -> new
SimpleLongProperty(javaClass.**getValue()));
hexColumn.setCellValueFactory(**javaClass -> new
SimpleStringProperty(Integer.**toHexString(javaClass.**getValue())));
tableView.getColumns().addAll(**integerColumn, hexColumn);
Any pointers on what I'm doing wrong or where I have to adapt my
expectations.
Is it correct that row sorting in a TableView is only possible for
ordinary
ObservableLists?
With Regards
Martin
