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iTrace-Dev / iTrace-Eclipse

Eclipse plugin to identify textual and interface elements based on iTrace Core gaze data
GNU General Public License v3.0
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Null Pointer Exception #31

Closed dtg3 closed 5 years ago

dtg3 commented 5 years ago

Getting a null pointer exception on eclipse when running the development instance with iTrace. This occurs every time I open one or more files and then close all open files. Plugin is not connected to core or anything, just installed and active in the IDE.

dtg3 commented 5 years ago

Stack Trace:

!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.NullPointerException
    at edu.ysu.itrace.TokenHighlighter.<init>(TokenHighlighter.java:131)
    at edu.ysu.itrace.ITrace.setActiveEditor(ITrace.java:198)
    at edu.ysu.itrace.ControlView.partClosed(ControlView.java:176)
    at org.eclipse.ui.internal.PartService$8.run(PartService.java:170)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.PartService.partClosed(PartService.java:167)
    at org.eclipse.ui.internal.WorkbenchPage$14.run(WorkbenchPage.java:5253)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.WorkbenchPage.firePartClosed(WorkbenchPage.java:5250)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.lambda$0(CompatibilityPart.java:109)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:236)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:147)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4580)
    at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:219)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
    at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
    at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
    at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:132)
    at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
    at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
    at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
    at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:63)
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
    at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setWidget(UIElementImpl.java:265)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.unbindWidget(SWTPartRenderer.java:150)
    at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.disposeWidget(SWTPartRenderer.java:173)
    at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.disposeWidget(ContributedPartRenderer.java:273)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:958)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$1(PartRenderingEngine.java:886)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:881)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:865)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.subscribeTopicToBeRendered(PartRenderingEngine.java:186)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
    at org.eclipse.e4.core.di.internal.extensions.EventObjectSupplier$DIEventHandler.handleEvent(EventObjectSupplier.java:91)
    at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
    at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
    at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:132)
    at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
    at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
    at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
    at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:63)
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
    at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:307)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1380)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1310)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.closePart(StackRenderer.java:1268)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.access$0(StackRenderer.java:1254)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer$3.close(StackRenderer.java:1122)
    at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1956)
    at org.eclipse.swt.custom.CTabFolder.lambda$0(CTabFolder.java:335)
    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.Display.runDeferredEvents(Display.java:3944)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3547)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:155)
    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 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
clptrsn commented 5 years ago

It tried to construct a token highlighter using a null editorPart. I added a check and it solved the issue