| 
| Error while opening editor [message #38511] | Fri, 26 June 2009 12:06 |  | 
| Eclipse User  |  |  |  |  | Hi, 
 I've wrote a parser and a dummy AST visitor. Both of them are DLTK
 compliant. Now I try to have an editor. In order to do so, I have a
 class that extends the abstract ScriptEditor. I extend it as shown in
 the python example available there :
 http://wiki.eclipse.org/DLTK_IDE_Guide:Step_2._Towards_an_Ed itor . Well,
 every time I try to open a file threw this new editor, I got an NPE from
 an inner class of Script editor. It seems related to completion
 process, but I have not required it in any kind. Have I forgotten
 something or does it deserve that I report it ?
 
 Regards
 
 PS : Here is the stack trace that occurs when I try to open a source file.
 
 java.lang.NullPointerException
 at
 org.eclipse.dltk.internal.ui.editor.ScriptEditor$AdaptedSour ceViewer.configure(ScriptEditor.java:403)
 at
 org.eclipse.ui.texteditor.AbstractTextEditor.createPartContr ol(AbstractTextEditor.java:3322)
 at
 org.eclipse.ui.texteditor.StatusTextEditor.createPartControl (StatusTextEditor.java:53)
 at
 org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.create PartControl(AbstractDecoratedTextEditor.java:427)
 at
 org.eclipse.dltk.internal.ui.editor.ScriptEditor.createPartC ontrol(ScriptEditor.java:1750)
 at
 org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:662)
 at
 org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:462)
 at
 org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:595)
 at  org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:31 3)
 at
 org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:180)
 at
 org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:270)
 at
 org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
 at
 org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:473)
 at
 org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1256)
 at  org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1209)
 at  org.eclipse.ui.internal.PartStack.showPart(PartStack.java:16 08)
 at org.eclipse.ui.internal.PartStack.add(PartStack.java:499)
 at  org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103 )
 at org.eclipse.ui.internal.PartStack.add(PartStack.java:485)
 at  org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112 )
 at
 org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:63)
 at
 org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:225)
 at
 org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:213)
 at
 org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:778)
 at
 org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:677)
 at  org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:638)
 at
 org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2854)
 at
 org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2762)
 at  org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPag e.java:2754)
 at  org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.j ava:2705)
 at  org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
 at
 org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2701)
 at
 org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2685)
 at
 org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2676)
 at
 org.eclipse.dltk.internal.ui.editor.EditorUtility.openInEdit or(EditorUtility.java:408)
 at
 org.eclipse.dltk.internal.ui.editor.EditorUtility.openInEdit or(EditorUtility.java:166)
 at
 org.eclipse.dltk.internal.ui.actions.OpenActionUtil.open(Ope nActionUtil.java:45)
 at  org.eclipse.dltk.ui.actions.OpenAction.run(OpenAction.java:2 56)
 at  org.eclipse.dltk.ui.actions.OpenAction.run(OpenAction.java:2 37)
 at
 org.eclipse.dltk.ui.actions.SelectionDispatchAction.dispatch Run(SelectionDispatchAction.java:259)
 at
 org.eclipse.dltk.ui.actions.SelectionDispatchAction.run(Sele ctionDispatchAction.java:235)
 at
 org.eclipse.dltk.internal.ui.scriptview.ScriptExplorerAction Group.handleOpen(ScriptExplorerActionGroup.java:304)
 at
 org.eclipse.dltk.internal.ui.scriptview.ScriptExplorerPart$4 .open(ScriptExplorerPart.java:662)
 at
 org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredV iewer.java:842)
 at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
 at org.eclipse.core.runtime.Platform.run(Platform.java:888)
 at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
 at  org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:17 5)
 at
 org.eclipse.jface.viewers.StructuredViewer.fireOpen(Structur edViewer.java:840)
 at
 org.eclipse.jface.viewers.StructuredViewer.handleOpen(Struct uredViewer.java:1101)
 at
 org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(Stru cturedViewer.java:1205)
 at  org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrate gy.java:264)
 at  org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.ja va:258)
 at  org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrate gy.java:298)
 at  org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
 at  org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3493)
 at  org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3112)
 at  org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2405)
 at  org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
 at  org.eclipse.ui.internal.Workbench.access$4(Workbench.java:22 21)
 at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
 at
 org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:332)
 at
 org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:493)
 at  org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
 at
 org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
 at
 org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:194)
 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(EclipseS tarter.java:368)
 at
 org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
 at
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at  org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 559)
 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
 at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
 at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
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