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Undoing on a Right of Either<SegmentOps, SegmentOps> throws an "Unexpected change received" exception #554

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JordanMartinez opened this issue Jul 31, 2017 · 3 comments
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Undoing on a Right of Either<SegmentOps, SegmentOps> throws an "Unexpected change received" exception #554

JordanMartinez opened this issue Jul 31, 2017 · 3 comments
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@JordanMartinez
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This is caused by EitherOps defaulting to the left ops when creating an empty segment.
@JordanMartinez
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This is the undo issue I mentioned in #550

@JordanMartinez
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Full stack trace:


Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Unexpected change received.
Expected:
RichTextChange{
	position: 34
	removed: Par[; left(StyledText[text="", style=])]
	inserted: Par[; right(RealHyperlink[displayedText=o, style=, link=http://www.google.com]),right(RealHyperlink[displayedText=m, style=, link=http://www.google.com])]
}
Received:
RichTextChange{
	position: 34
	removed: Par[; right(EmptyHyperlink)]
	inserted: Par[; right(RealHyperlink[displayedText=o, style=, link=http://www.google.com]),right(RealHyperlink[displayedText=m, style=, link=http://www.google.com])]
}
	at org.fxmisc.undo.impl.UndoManagerImpl.changeObserved(UndoManagerImpl.java:204)
	at org.reactfx.util.QueuingStreamNotifications.lambda$head$0(NotificationAccumulator.java:217)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:68)
	at org.reactfx.SuspendableBase.resume(SuspendableBase.java:64)
	at org.reactfx.CloseableOnceGuard.close(Guard.java:49)
	at org.reactfx.MultiGuard.close(Guard.java:83)
	at org.reactfx.Suspendable$1.resumeSource(Suspendable.java:118)
	at org.reactfx.Suspendable$1.suspendSource(Suspendable.java:104)
	at org.reactfx.util.NonAccumulativeStreamNotifications.lambda$head$0(NotificationAccumulator.java:134)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:68)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:57)
	at org.reactfx.ProperEventStream.emit(ProperEventStream.java:18)
	at org.reactfx.EventStreams$3.lambda$observeInputs$0(EventStreams.java:105)
	at org.reactfx.value.ChangeListenerWrapper.accept(Val.java:786)
	at org.reactfx.util.AbstractReducingStreamNotifications.lambda$head$0(NotificationAccumulator.java:248)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:68)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:57)
	at org.reactfx.value.ValBase.invalidate(ValBase.java:32)
	at org.reactfx.SuspendableBoolean.release(SuspendableBoolean.java:24)
	at org.reactfx.CloseableOnceGuard.close(Guard.java:49)
	at org.reactfx.Suspendable.suspendWhile(Suspendable.java:49)
	at org.fxmisc.richtext.model.GenericEditableStyledDocumentBase.update(GenericEditableStyledDocumentBase.java:218)
	at org.reactfx.util.Tuple3.exec(Tuple3.java:43)
	at org.fxmisc.richtext.model.GenericEditableStyledDocumentBase.replace(GenericEditableStyledDocumentBase.java:125)
	at org.fxmisc.richtext.model.GenericEditableStyledDocument.replace(GenericEditableStyledDocument.java:11)
	at org.fxmisc.richtext.GenericStyledArea.replace(GenericStyledArea.java:1125)
	at org.fxmisc.richtext.util.UndoUtils.lambda$applyRichTextChange$1(UndoUtils.java:159)
	at org.fxmisc.undo.impl.UndoManagerImpl.lambda$performChange$2(UndoManagerImpl.java:189)
	at org.reactfx.Suspendable.suspendWhile(Suspendable.java:49)
	at org.fxmisc.undo.impl.UndoManagerImpl.performChange(UndoManagerImpl.java:189)
	at org.fxmisc.undo.impl.UndoManagerImpl.undo(UndoManagerImpl.java:101)
	at org.fxmisc.richtext.util.UndoManagerInactivityWrapper.undo(UndoManagerInactivityWrapper.java:36)
	at org.fxmisc.richtext.model.UndoActions.undo(UndoActions.java:23)
	at org.fxmisc.richtext.GenericStyledAreaBehavior.lambda$static$4(GenericStyledAreaBehavior.java:70)
	at org.fxmisc.wellbehaved.event.template.InputMapTemplate.lambda$consume$32(InputMapTemplate.java:107)
	at org.fxmisc.wellbehaved.event.template.PatternActionTemplate.lambda$null$44(InputMapTemplate.java:242)
	at java.util.Optional.map(Optional.java:215)
	at org.fxmisc.wellbehaved.event.template.PatternActionTemplate.lambda$getInputHandlerTemplateMap$45(InputMapTemplate.java:242)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:25)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:24)
	at org.fxmisc.wellbehaved.event.template.InputMapTemplate$2.lambda$null$35(InputMapTemplate.java:180)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:24)
	at org.fxmisc.wellbehaved.event.template.InputMapTemplate$1.lambda$null$30(InputMapTemplate.java:92)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:24)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:24)
	at org.fxmisc.wellbehaved.event.template.InputMapTemplate$1.lambda$null$30(InputMapTemplate.java:92)
	at org.fxmisc.wellbehaved.event.template.InputHandlerTemplateMap.lambda$sequence$39(InputHandlerTemplateMap.java:24)
	at org.fxmisc.wellbehaved.event.template.InputMapTemplate$HandlerTemplateConsumer$1.lambda$accept$29(InputMapTemplate.java:36)
	at org.fxmisc.wellbehaved.event.InputHandler.handle(InputHandler.java:15)
	at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
	at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
	at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
	at javafx.event.Event.fireEvent(Event.java:198)
	at javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
	at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
	at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
	at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:217)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:149)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$353(GlassViewEventHandler.java:248)
	at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:247)
	at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
	at com.sun.glass.ui.View.notifyKey(View.java:966)
	at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at com.sun.glass.ui.gtk.GtkApplication.lambda$null$49(GtkApplication.java:139)
	at java.lang.Thread.run(Thread.java:748)

@JordanMartinez
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JordanMartinez commented Aug 8, 2017 •
edited
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I can trace the bug to Paragraph#subsequence when start == length(). Updating this case to return segmentOps.createEmpty() will make the bug disappear. Without it, the right side of Either will return its version of empty seg, not the left empty seg to which EitherOps defaults. However, this creates a new problem.

TextOps#createStyle doesn't return the empty segment when it creates the initial segment when initializing a ReadOnlyStyledDocument, as the created segment is supposed to store the initial text style so that future additions can inherit the style.
Thus, StyledText(text="" style=) != StyledText(text="" style=null) and the same exception above is thrown.

@JordanMartinez JordanMartinez mentioned this issue Aug 8, 2017
Merged
@Jugen Jugen mentioned this issue Mar 2, 2020
Closed
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@JordanMartinez