Opening a track causes an SWTException in certain situations

[Henrik Heimbuerger]

Reproduction steps:

1. Start with a fresh workspace.
2. Open a track (e.g. htwgDigitalCheckpoint)
3. Close the track
4. Open another track (e.g. htwgAnalogue)

Result:

org.eclipse.swt.SWTException: Widget is disposed
	at org.eclipse.swt.SWT.error(SWT.java:3777)
	at org.eclipse.swt.SWT.error(SWT.java:3695)
	at org.eclipse.swt.SWT.error(SWT.java:3666)
	at org.eclipse.swt.widgets.Widget.error(Widget.java:463)
	at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:336)
	at org.eclipse.swt.custom.ScrolledComposite.setLayout(ScrolledComposite.java:554)
	at de.jacavi.rcp.views.TileExplorerView.paintAndRefresh(TileExplorerView.java:64)
	at de.jacavi.rcp.views.TileExplorerView.partActivated(TileExplorerView.java:122)
	at org.eclipse.ui.internal.PartListenerList2$1.run(PartListenerList2.java:68)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.runtime.Platform.run(Platform.java:880)
	at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:53)
	at org.eclipse.ui.internal.PartListenerList2.firePartActivated(PartListenerList2.java:66)
	at org.eclipse.ui.internal.PartService.firePartActivated(PartService.java:191)
	at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:305)
	at org.eclipse.ui.internal.WWinPartService.updateActivePart(WWinPartService.java:124)
	at org.eclipse.ui.internal.WWinPartService.access$0(WWinPartService.java:115)
	at org.eclipse.ui.internal.WWinPartService$1.partDeactivated(WWinPartService.java:48)
	at org.eclipse.ui.internal.PartListenerList2$4.run(PartListenerList2.java:113)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.runtime.Platform.run(Platform.java:880)
	at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:53)
	at org.eclipse.ui.internal.PartListenerList2.firePartDeactivated(PartListenerList2.java:111)
	at org.eclipse.ui.internal.PartService.firePartDeactivated(PartService.java:241)
	at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:299)
	at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:56)
	at org.eclipse.ui.internal.PartList.setActivePart(PartList.java:126)
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3491)
	at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:610)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2832)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2729)
	at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2721)
	at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2673)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2668)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2652)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2635)
	at de.jacavi.rcp.actions.OpenTrackFileAction.openEditor(OpenTrackFileAction.java:80)
	at de.jacavi.rcp.actions.OpenTrackFileAction.run(OpenTrackFileAction.java:55)
	at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
	at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:583)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:500)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
	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 de.jacavi.rcp.Application.start(Application.java:36)
	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:386)
	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)

Looks like paintAndRefresh() is called, but the scrolledComposite in line 64 is already disposed.

[SVN]

New commit by frohn (revision [544]):
[Fix for ticket #178] Fixed this bug on closing the last open editor

There was something too much disposed.

[SVN]

New commit by frohn (revision [551]):
[Fix for ticket #178] Fixed this bug on closing the last open editor

There was something too much disposed.