I have a ListView and want to select multiple indices programmatically inside Platform.runLater()
Problem: If the indices I want to select are sequential (e.g. {5,6,7}) the selection works fine. If there is a gap (e.g. {5,7,8}), an OOB exception is thrown.
java.lang.IndexOutOfBoundsException: [ fromIndex: 0, toIndex: 5, size: 3 ]
I believe there may be a bug in Java9's (this exception started appearing after we upgraded from Java8 to 9) MultipleSelectionModelBase#set.
For the indices {5,6,7}, the method calls _nextAdd(from, to) with the values 0 and 3. (0 inclusive, 3 exclusive, with I assume refers to the indices 0,1,2 in my array of {5,6,7})
For the indices {5,7,8}, it calls _nextAdd(0,2) for {5} and _nextAdd(2,5) for the indices {7,8}.
I believe it should instead be _nextAdd(0,1) and _nextAdd(1,3) since my array has only 3 elements, not 5.
The exception is eventually thrown when javafx.collections.ListChangeListener#getAddedSubList calls getList().subList(getFrom(), getTo()) with the parameters 0,5
I googled for bug reports and could not find anything about this problem.
I thought I'd ask here before filing a bug report.
MVCE
Start the program, click on the "Select 578" button. An exception is thrown (and caught): [ fromIndex: 0, toIndex: 5, size: 3 ]
OR
Comment out both "clearSelection" lines.
Start the program, click on "Select 567", then click on "Select 578".
An exception is thrown (and caught): [ fromIndex: 8, toIndex: 9, size: 4 ]
package sample;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.control.SelectionMode;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
ObservableList<String> items = FXCollections.observableArrayList(
"one","two","three","four","five","six","seven","eight","nine","ten");
ListView<String> list = new ListView<>(items);
list.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
Button select567Button = new Button();
select567Button.setText("Select 567");
select567Button.setOnAction(event -> {
list.getSelectionModel().clearSelection();
list.getSelectionModel().selectIndices(5, 6, 7);
});
Button select578Button = new Button();
select578Button.setText("Select 578");
select578Button.setOnAction(event -> {
list.getSelectionModel().clearSelection();
list.getSelectionModel().selectIndices(5, 7, 8);
});
VBox root = new VBox(select567Button, select578Button, list);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Java -version
java version "9"
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
StackTrace (when starting the program and immediately selecting "578" Button before anything else):
Exception in thread "JavaFX Application Thread" java.lang.IndexOutOfBoundsException: [ fromIndex: 0, toIndex: 5, size: 3 ]
at javafx.controls/com.sun.javafx.scene.control.ReadOnlyUnbackedObservableList.subList(ReadOnlyUnbackedObservableList.java:170)
at javafx.base/javafx.collections.ListChangeListener$Change.getAddedSubList(ListChangeListener.java:242)
at javafx.controls/com.sun.javafx.scene.control.behavior.ListViewBehavior.lambda$new$55(ListViewBehavior.java:281)
at javafx.base/javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
at javafx.base/com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
at javafx.base/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
at javafx.base/javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
at javafx.base/javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
at javafx.base/javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
at javafx.base/javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
at javafx.controls/com.sun.javafx.scene.control.ReadOnlyUnbackedObservableList._endChange(ReadOnlyUnbackedObservableList.java:63)
at javafx.controls/javafx.scene.control.MultipleSelectionModelBase$SelectedIndicesList._endChange(MultipleSelectionModelBase.java:895)
at javafx.controls/javafx.scene.control.MultipleSelectionModelBase$SelectedIndicesList.set(MultipleSelectionModelBase.java:785)
at javafx.controls/javafx.scene.control.MultipleSelectionModelBase.selectIndices(MultipleSelectionModelBase.java:490)
at sample.Main.lambda$start$1(Main.java:33)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.base/javafx.event.Event.fireEvent(Event.java:198)
at javafx.graphics/javafx.scene.Node.fireEvent(Node.java:8863)
at javafx.controls/javafx.scene.control.Button.fire(Button.java:200)
at javafx.controls/com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:206)
at javafx.controls/com.sun.javafx.scene.control.inputmap.InputMap.handle(InputMap.java:274)
at javafx.base/com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.base/javafx.event.Event.fireEvent(Event.java:198)
at javafx.graphics/javafx.scene.Scene$MouseHandler.process(Scene.java:3876)
at javafx.graphics/javafx.scene.Scene$MouseHandler.access$1300(Scene.java:3604)
at javafx.graphics/javafx.scene.Scene.processMouseEvent(Scene.java:1874)
at javafx.graphics/javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2613)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
at javafx.graphics/com.sun.glass.ui.View.handleMouseEvent(View.java:556)
at javafx.graphics/com.sun.glass.ui.View.notifyMouse(View.java:942)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:189)
at java.base/java.lang.Thread.run(Thread.java:844)
