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Making view visible throws IndexOutOfBoundsException [message #696365]

Wed, 13 July 2011 19:39

Alex Molochnikov

Messages: 25
Registered: July 2009

Junior Member

I have a view that is displayed automatically when the editor becomes
active. If the editor is opened following selection of an IResource,
everything works. However, if it is restored from the previous session,
and the editor is not active when restored (i.e. some other editor has
focus), then making this editor active again throws
IndexOutOfBoundsException in this code fragment:

IWorkbenchPage page = getSite().getWorkbenchWindow().getActivePage();
try {
if (page != null) {
MyView view = (MyView) page.findView(MyView.ID);
if (view == null) {
page.showView(MyView.ID, null, IWorkbenchPage.VIEW_CREATE); //
line 1068: throws IndexOutOfBoundsException
}
}
....

The exception is:

java.lang.IndexOutOfBoundsException: Index: -1, Size: 3
at java.util.ArrayList.add(ArrayList.java:367)
at org.eclipse.ui.internal.PartStack.replace(PartStack.java:912)
at
org.eclipse.ui.internal.PerspectiveHelper.addPart(PerspectiveHelper.java:400)
at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2331)
at
org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1071)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3822)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at
org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3819)
at
MyEditor.updateMyView(MyEditor.java:1068)
....

Any idea as to what to look for?

Thanks,

Alex Molochnikov
Fugro Seismic Imaging

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Re: Making view visible throws IndexOutOfBoundsException [message #698000 is a reply to message #696365]

Mon, 18 July 2011 15:19

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

You might have to put your view creation in a job or display.asyncExec(*) to allow your editor part creation to finish before the showView(*) is called.

If that doesn't help, please open a bug at https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Platform&component=UI

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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