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Another "Prevented recursive attempt" error - but it's not setFocus [message #542290]

Thu, 24 June 2010 13:13

Matthieu Wipliez

Messages: 30
Registered: March 2010

Member

Hi,

I have a GEF editor, and I discovered today that when I opened the editor I had a "Prevented recursive attempt to activate part" error.
A few posts on the web seem to indicate the problem is caused by a listener or an empty setFocus method.
In my case, it seems to be neither.

I'm using Eclipse 3.6 for Linux 64 bits and Gtk.
Note that the problem does not occur on Windows (I have not tested on Mac), and disappears if I do not register the PrintAction in the createActions method in my editor.

The stack trace indicates that when the editor part is activated, the GraphicalEditor updates its actions, calls the calculateEnabled method of PrintAction, which calls Printer#getPrinterList, which somehow fires an event (after going in the Gtk OS layer) that ends up making Eclipse reactivating the part.

Am I doing something wrong? Is this a bug in SWT?

Cheers
Matthieu

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Re: Another "Prevented recursive attempt" error - but it's not setFocus [message #542299 is a reply to message #542290]

Thu, 24 June 2010 13:33

Vijay Raj

Messages: 608
Registered: July 2009

Senior Member

can u provide the logs pls

---------------------
why, mr. Anderson, why, why do you persist?
Because I Choose To.
Regards,
Vijay

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Re: Another "Prevented recursive attempt" error - but it's not setFocus [message #542332 is a reply to message #542299]

Thu, 24 June 2010 14:33

Matthieu Wipliez

Messages: 30
Registered: March 2010

Member

Sure, here it is:
(this is in the Java perspective with the Package Explorer, but there is no difference with the Project Explorer).

The editor is open-source in case you want to have a look at it Smile

!ENTRY org.eclipse.ui.workbench 4 0 2010-06-24 16:13:21.358
!MESSAGE WARNING: Prevented recursive attempt to activate part org.eclipse.jdt.ui.PackageExplorer while still in the middle of activating part net.sf.graphiti.ui.editors.GraphEditor
!STACK 0
java.lang.RuntimeException: WARNING: Prevented recursive attempt to activate part org.eclipse.jdt.ui.PackageExplorer while still in the middle of activating part net.sf.graphiti.ui.editors.GraphEditor
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3487)
	at org.eclipse.ui.internal.WorkbenchPage.requestActivation(WorkbenchPage.java:3077)
	at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:279)
	at org.eclipse.ui.internal.PartPane.handleEvent(PartPane.java:237)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1263)
	at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:1531)
	at org.eclipse.swt.widgets.Control.gtk_button_press_event(Control.java:2643)
	at org.eclipse.swt.widgets.Control.gtk_button_press_event(Control.java:2579)
	at org.eclipse.swt.widgets.Composite.gtk_button_press_event(Composite.java:681)
	at org.eclipse.swt.widgets.Tree.gtk_button_press_event(Tree.java:1865)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1731)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4794)
	at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:3485)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4372)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8163)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1239)
	at org.eclipse.swt.internal.gtk.OS._gtk_enumerate_printers(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_enumerate_printers(OS.java:9065)
	at org.eclipse.swt.printing.Printer.getPrinterList(Printer.java:91)
	at org.eclipse.gef.ui.actions.PrintAction.calculateEnabled(PrintAction.java:45)
	at org.eclipse.gef.ui.actions.WorkbenchPartAction.refresh(WorkbenchPartAction.java:131)
	at org.eclipse.gef.ui.actions.WorkbenchPartAction.update(WorkbenchPartAction.java:173)
	at org.eclipse.gef.ui.parts.GraphicalEditor.updateActions(GraphicalEditor.java:458)
	at org.eclipse.gef.ui.parts.GraphicalEditor.selectionChanged(GraphicalEditor.java:401)
	at org.eclipse.ui.internal.AbstractSelectionService.fireSelection(AbstractSelectionService.java:156)
	at org.eclipse.ui.internal.AbstractSelectionService.setActivePart(AbstractSelectionService.java:282)
	at org.eclipse.ui.internal.WWinPartService.updateActivePart(WWinPartService.java:134)
	at org.eclipse.ui.internal.WWinPartService.access$0(WWinPartService.java:125)
	at org.eclipse.ui.internal.WWinPartService$WWinListener.partDeactivated(WWinPartService.java:50)
	at org.eclipse.ui.internal.PartListenerList2$4.run(PartListenerList2.java:115)
	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.PartListenerList2.fireEvent(PartListenerList2.java:55)
	at org.eclipse.ui.internal.PartListenerList2.firePartDeactivated(PartListenerList2.java:113)
	at org.eclipse.ui.internal.PartService.firePartDeactivated(PartService.java:242)
	at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:300)
	at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:57)
	at org.eclipse.ui.internal.PartList.setActivePart(PartList.java:136)
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3537)
	at org.eclipse.ui.internal.WorkbenchPage.internalActivate(WorkbenchPage.java:617)
	at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:589)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2875)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768)
	at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760)
	at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2682)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:365)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:168)
	at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:229)
	at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:208)
	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:373)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:526)
	at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
	at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:845)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
	at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:843)
	at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1131)
	at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1235)
	at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:264)
	at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:258)
	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:298)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3552)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	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:369)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1383)

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