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ViewPart closing - causing content provider to be disposed [message #665749]

Fri, 15 April 2011 17:54

anna.w.teittinen

Messages: 23
Registered: February 2011

Junior Member

Hello,

I hope I am posting this question in the correct forum and express my question clearly.

I have 2 ViewPart(s), say, ViewPart1 and ViewPart2; both implement ISelectionListener.
ViewPart1 has a tree where if a user clicks on a node, it updates a table in ViewPart2.

If a user does that and ViewPart2 had been closed by the user already, I noticed that method ViewPart2::selectionChanged(...) still gets called, without ViewPart2::createPartControl(...) getting called first. ViewPart2::createPartControl(...) is where the table and its content provider get set. When a view, ViewPart2 is closed, why does the content provider get disposed? This causes the problem where a list is getting set as input to the table with an assertion error thrown: "ContentViewer must have a content provider when input is set."

When a ViewPart is closed, can we prevent the content provider from getting disposed?

Thanks so much.

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Re: ViewPart closing - causing content provider to be disposed [message #665760 is a reply to message #665749]

Fri, 15 April 2011 18:43

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

On 04/15/2011 01:54 PM, Anna T. wrote:
> Hello,
>
> I hope I am posting this question in the correct forum and express my
> question clearly.
>
> I have 2 ViewPart(s), say, ViewPart1 and ViewPart2; both implement
> ISelectionListener.
> ViewPart1 has a tree where if a user clicks on a node, it updates a
> table in ViewPart2.
>
> If a user does that and ViewPart2 had been closed by the user already, I
> noticed that method ViewPart2::selectionChanged(...)

If you add listeners in your createPartControl(*) you are required (with
a few minor exceptions) to remove them in your part#dispose() method.

PW

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Paul Webster
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Paul Webster
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