Description Darin Swanson 2001-10-10 23:08:25 EDT

DS (9/21/01 11:17:42 AM)
	
	Log: Fri Sep 21 11:16:24 CDT 2001
2 org.eclipse.ui 2 Problems occurred when invoking code from plug-in: org.eclipse.ui.
org.eclipse.jface.util.Assert$AssertionFailedException: null argument;
	at org.eclipse.jface.util.Assert.isNotNull(Assert.java:133)
	at org.eclipse.jface.util.Assert.isNotNull(Assert.java(Compiled Code))
	at org.eclipse.jface.util.ListenerList.remove(ListenerList.java:131)
	at org.eclipse.jdt.internal.ui.viewsupport.ProblemMarkerManager.removeListener(ProblemMarkerManager.java:184)
	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.dispose(PackageExplorerPart.java:224)
	at org.eclipse.ui.internal.WorkbenchPage.dispose(WorkbenchPage.java:500)
	at org.eclipse.ui.internal.WorkbenchWindow.closeAllPages(WorkbenchWindow.java:315)
	at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:612)
	at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:260)
	at org.eclipse.ui.internal.WorkbenchWindow.access$3(WorkbenchWindow.java:251)
	at org.eclipse.ui.internal.WorkbenchWindow$1.run(WorkbenchWindow.java:291)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:56)
	at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:289)
	at org.eclipse.jface.window.WindowManager.close(WindowManager.java:103)
	at org.eclipse.ui.internal.Workbench$2.run(Workbench.java:100)
	at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:761)
	at org.eclipse.core.runtime.Platform.run(Platform.java:395)
	at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:98)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:76)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:157)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:56)
	at org.eclipse.ui.internal.Workbench.close(Workbench.java:155)
	at org.eclipse.ui.internal.QuitAction.run(QuitAction.java:31)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:407)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent(ActionContributionItem.java:361)
	at org.eclipse.jface.action.ActionContributionItem.access$0(ActionContributionItem.java:352)
	at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent(ActionContributionItem.java:47)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java(Compiled Code))
	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:646)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1359)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1160)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:675)
	at org.eclipse.ui.internal.Workbench.run(Workbench.java:658)
	at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:820)
	at org.eclipse.core.boot.BootLoader.run(BootLoader.java:285)
	at java.lang.reflect.Method.invoke(Native Method)
	at org.eclipse.core.launcher.Main.basicRun(Main.java:151)
	at org.eclipse.core.launcher.Main.run(Main.java:433)
	at org.eclipse.core.launcher.UIMain.main(UIMain.java:52)


NOTES:
EG (21.09.2001 20:34:50)
	The code should not assume that a viewer is instantiated when a part is disposed.
	fix is a missing null check.