AssertionFailedException lors de la création de CellEditor dans Eclipse

Question

Espérons que quelqu'un puisse me diriger dans la bonne direction. J'essaye de créer un CellEditor dans Eclipse et quand je clique sur le champ j'obtiens une exception de boucle d'événement Unhandled avec la trace de pile ci-dessous.

Le code éditeur de cellules pour cette colonne ressemble à ce

/** Cell Editor Row 2 **/ 
textEditor = new TextCellEditor(table); 
((Text)textEditor.getControl()).setTextLimit(10); 
editors[1] = textEditor; 

org.eclipse.core.runtime.AssertionFailedException: assertion failed: 
at org.eclipse.core.runtime.Assert.isTrue(Assert.java:111) 
at org.eclipse.core.runtime.Assert.isTrue(Assert.java:97) 
at org.eclipse.jface.viewers.TextCellEditor.doSetValue(TextCellEditor.java:228) 
at org.eclipse.jface.viewers.CellEditor.setValue(CellEditor.java:855) 
at org.eclipse.jface.viewers.EditingSupport.initializeCellEditorValue(EditingSupport.java:96) 
at org.eclipse.jface.viewers.ColumnViewerEditor.activateCellEditor(ColumnViewerEditor.java:194) 
at org.eclipse.jface.viewers.ColumnViewerEditor.handleEditorActivationEvent(ColumnViewerEditor.java:443) 
at org.eclipse.jface.viewers.ColumnViewer.triggerEditorActivationEvent(ColumnViewer.java:680) 
at org.eclipse.jface.viewers.ColumnViewer.handleMouseDown(ColumnViewer.java:664) 
at org.eclipse.jface.viewers.ColumnViewer.access$0(ColumnViewer.java:660) 
at org.eclipse.jface.viewers.ColumnViewer$1.mouseDown(ColumnViewer.java:89) 
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:179) 
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) 
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003) 
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823) 
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422) 
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382) 
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346) 
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198) 
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493) 
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288) 
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488) 
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) 
at com.tasc.swb.internal.application.SWBApplication.start(SWBApplication.java:414) 
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549) 
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504) 
at org.eclipse.equinox.launcher.Main.run(Main.java:1236) 
at org.eclipse.equinox.launcher.Main.main(Main.java:1212) 

Answer 1

Selon this thread:

il semble que:

• vous avez soit pas réglé la CellModifier pour la TableViewer (en utilisant la fonction setCellModifier())
• ou, si vous avez, la fonction getValue() de votre ICellModifier descendant renvoie null ou pas un objet String.
  La valeur de retour de getValue() est un objet, mais si vous utilisez un TextCellEditor, il doit renvoyer une chaîne.