IllegalStateException on an observable list

[Tom Eugelink]

How blond can one be, overlooked that. Thanks.

Tom


On 2012-10-21 22:07, Martin Klähn wrote:
> Hi,
>
> it seems you've missed to iterate through the collected changes in that Change. if you wrap your for-loop in while(c.next()) it'll work. you can then optionally check if the change was caused by appointments being removed from the list or by something else. See http://docs.oracle.com/javafx/2/api/javafx/collections/ListChangeListener.Change.html for reference.
>
> Martin
>
>
> On Sun, Oct 21, 2012 at 9:37 PM, Tom Eugelink <tbee at tbee.org <mailto:tbee at tbee.org>> wrote:
>
>     I have two observable lists; one containing appointments, the other containing selected appointments. If an appointment is removed from the first list, it also must be removed from the second. For this I setup a listener on the first list to handle this:
>
>             // when appointments are removed, they can't be selected anymore
>             appointments.addListener(new ListChangeListener<Agenda.Appointment>()
>             {
>                 @Override
>                 public void onChanged(javafx.collections.ListChangeListener.Change<? extends Appointment> changes)
>                 {
>                     for (Appointment lAppointment : changes.getRemoved())
>                     {
>                         selectedAppointments.remove(lAppointment);
>                     }
>                 }
>             });
>
>     when constructing the control I get the following exception on the getRemoved() call.
>
>     Caused by: java.lang.IllegalStateException
>         at com.sun.javafx.collections.NonIterableChange.checkState(NonIterableChange.java:101)
>         at com.sun.javafx.collections.NonIterableChange$SimpleAddChange.getRemoved(NonIterableChange.java:158)
>         at jfxtras.labs.scene.control.Agenda$1.onChanged(Agenda.java:108)
>         at com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(ListListenerHelper.java:134)
>         at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:48)
>         at com.sun.javafx.collections.ObservableListWrapper.callObservers(ObservableListWrapper.java:97)
>         at com.sun.javafx.collections.ObservableListWrapper.addAll(ObservableListWrapper.java:171)
>         at com.sun.javafx.collections.ObservableListWrapper.addAll(ObservableListWrapper.java:160)
>         at com.sun.javafx.collections.ObservableListWrapper.addAll(ObservableListWrapper.java:309)
>         at jfxtras.labs.scene.control.AgendaTrial1.start(AgendaTrial1.java:122)
>         at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319)
>         at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:206)
>         at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:173)
>         at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
>         at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
>         at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
>         ... 1 more
>
>     Can someone explain why? And how to work around that?
>
>     Tom
>
>
>