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I want do something before closing a view [message #542179]

Thu, 24 June 2010 07:39

Ricky Ru

Messages: 14
Registered: February 2010

Junior Member

Hi friends,

As the title indicates, what should I do for it? I think I should add a listener and implement the close method. But can anyone tell me what the api is?

Thanks

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Re: I want do something before closing a view [message #542252 is a reply to message #542179]

Thu, 24 June 2010 11:16

Daniel KrÃ¼gler

Messages: 853
Registered: July 2009

Senior Member

On 24.06.2010 09:39, Ricky Ru wrote:
> Hi friends,
>
> As the title indicates, what should I do for it? I think I should add a
> listener and implement the close method. But can anyone tell me what the
> api is?

You could use an IPartListener2 and listen for the partClosed
event. Since this is an often-occuring task, You might want
to create a helper class that accepts an IViewPart and does
this for you, see below.

HTH & Greetings from Bremen,

Daniel Krügler

public abstract class PartOpenCloseObserver {

private IPartListener2 listener = new IPartListener2() {

@Override
public void partActivated(IWorkbenchPartReference partRef) {
}

@Override
public void partBroughtToTop(IWorkbenchPartReference partRef) {
}

@Override
public void partClosed(IWorkbenchPartReference partRef) {
if (partRef.getPart(false) == part) {
partRef.getPage().removePartListener(listener);
PartOpenCloseObserver.this.partClosed(part);
}
}

@Override
public void partDeactivated(IWorkbenchPartReference partRef) {
}

@Override
public void partHidden(IWorkbenchPartReference partRef) {
}

@Override
public void partInputChanged(IWorkbenchPartReference partRef) {
}

@Override
public void partOpened(IWorkbenchPartReference partRef) {
if (partRef.getPart(false) == part) {
PartOpenCloseObserver.this.partOpened(part);
}
}

@Override
public void partVisible(IWorkbenchPartReference partRef) {
}

};

private IWorkbenchPart part;

public PartOpenCloseObserver(IViewPart part) {
Assert.isNotNull(part);
this.part = part;
part.getSite().getPage().addPartListener(listener);
}

public PartOpenCloseObserver(IEditorPart part) {
Assert.isNotNull(part);
this.part = part;
part.getSite().getPage().addPartListener(listener);
}

public abstract void partOpened(IWorkbenchPart part);

public abstract void partClosed(IWorkbenchPart part);

}

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Re: I want do something before closing a view [message #542630 is a reply to message #542179]

Fri, 25 June 2010 13:46

Christophe Fondacci

Messages: 95
Registered: July 2009
Location: Paris

Member

Hello Ricky,

If you're sure the view has been created (view controls were created / view had focus), you could simply overload the dispose() method in your view part and add all your "something" work in this method.

Note that this method will not be called if the view was never shown and the user simply clicked the cross without displaying the view, unless you forced view initialization through :

IWorkbenchPage.showView(YourView.VIEW_ID, null, IWorkbenchPage.VIEW_CREATE);

Hope this helps,
Christophe
http://www.nextep-softwares.com

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Re: I want do something before closing a view [message #543352 is a reply to message #542630]

Tue, 29 June 2010 08:01

Daniel KrÃ¼gler

Messages: 853
Registered: July 2009

Senior Member

On 25.06.2010 15:46, Christophe Fondacci wrote:
> Hello Ricky,
>
> If you're sure the view has been created (view controls were created /
> view had focus), you could simply overload the dispose() method in your
> view part and add all your "something" work in this method.

I stumbled several times across the problem, that the ViewPart.dispose()
function is actually called, *after* the controls have been disposed,
which is sometimes too late for some-cleanup work - Therefore I
recommend to listen to an IPartListener2 instead.

Greetings from Bremen,

- Daniel Krügler

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