Eclipse Community Forums: JFace » NPE in ColumnViewerEditor due to cellEditor is null

Home » Eclipse Projects » JFace » NPE in ColumnViewerEditor due to cellEditor is null(when I switch the focus from one tree cell to another, the NPE occurs in ColumnViewerEditor)

Show: Today's Messages :: Show Polls :: Message Navigator

NPE in ColumnViewerEditor due to cellEditor is null [message #1809834]

Wed, 24 July 2019 10:05

Sanket W

Messages: 3
Registered: July 2019

Junior Member

Switch focus from one tree cell to another tree cell and when the target focus is on the next line/row of tree table, this issue occurs.

Usecase:
Consider I have a tree table with 2 rows/entries i.e. row1 and row2
The current focus is on the last editable cell of a row1.
Press TAB key, the focus should shift to next row's first editable cell i.e. row2's first editable cell.
But NPE is observed

Also checked the bug which has resolved the NPE using some condition:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=260892
I think this fix was provided for a similar issue.

This issue, I posted on eclipse Bugzilla as well:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=549385

Stacktrace is attached as below:

java.lang.NullPointerException
at org.eclipse.jface.viewers.ColumnViewerEditor.activateCellEditor(ColumnViewerEditor.java:192)
at org.eclipse.jface.viewers.ColumnViewerEditor.handleEditorActivationEvent(ColumnViewerEditor.java:425)
at org.eclipse.jface.viewers.ColumnViewer.triggerEditorActivationEvent(ColumnViewer.java:680)
at org.eclipse.jface.viewers.ColumnViewerEditor.processTraverseEvent(ColumnViewerEditor.java:541)
at org.eclipse.jface.viewers.ColumnViewerEditor.lambda$1(ColumnViewerEditor.java:245)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:269)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4131)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1055)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1064)
at org.eclipse.swt.widgets.Control.traverse(Control.java:4277)
at org.eclipse.swt.widgets.Control.translateTraversal(Control.java:4259)
at org.eclipse.swt.widgets.Display.translateTraversal(Display.java:4687)
at org.eclipse.swt.widgets.Display.filterMessage(Display.java:1211)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3543)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:563)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:151)
at com.teamcenter.rac.aifrcp.Application.runApplication(Unknown Source)
at com.teamcenter.rac.aifrcp.Application.start(Unknown Source)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595)
at org.eclipse.equinox.launcher.Main.run(Main.java:1501)
at org.eclipse.equinox.launcher.Main.main(Main.java:1474)

Attachment: snap.png
(Size: 19.81KB, Downloaded 4 times)

Report message to a moderator

Previous Topic:	ModalContext.setAllowReadAndDispatch does not work correct as comment
Next Topic:	Keybinding conflicts

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Wed Dec 11 19:11:48 GMT 2019

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter