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Undo operation in sirius editor [message #1794558]

Sun, 02 September 2018 22:46

Eclipse User

Hi,

I have a model with 2 elements,
Step 1: Create a sirius diagram of the model, the diagram show the 2 elements.
Step 2: Save the diagram and close it.
Step 3: Delete one element on EMF editor, and save the model.
Step 4: Open the sirius diagram, the diagram synchronized from the model, and shows the remaining element.
Step 5: Press 'Ctrl + z' on the diagram to execute undo operation. The diagram show the deleted element with a red cross flag.

My question is, is it reasonable to allow undo operation while the diagram opened?

Re: Undo operation in sirius editor [message #1794652 is a reply to message #1794558]

Tue, 04 September 2018 09:49

Eclipse User

Hi, I don't reproduce but anyway why do you think we should forbid undo?

Regards

Re: Undo operation in sirius editor [message #1794691 is a reply to message #1794652]

Tue, 04 September 2018 22:08

Eclipse User

Hi, Pierre,
I produced this problem in Obeo Designer 8.1.

I know the reason is that, sirius synchronize diagram from model at opening time, this may remove some diagram elements (which the back-end model element does not exist). When user trigger undo operation, sirius bring the removed diagram elements back.

I'm not wanting to forbid undo. It is nice to show a red cross flag if the element is not exist anymore, but it make user confused sometimes.

[Updated on: Tue, 04 September 2018 22:09] by Moderator

Re: Undo operation in sirius editor [message #1794712 is a reply to message #1794691]

Wed, 05 September 2018 06:21

Eclipse User

Hi,
I am not sure to understand when the red cross is visible, what undo is done, and what does mean the removed element is back and what is confusing for user.

If you click refresh, it disappear?

Regards

Re: Undo operation in sirius editor [message #1794748 is a reply to message #1794712]

Wed, 05 September 2018 23:22

Eclipse User

Hi,

Attachment: All.jpg
(Size: 66.69KB, Downloaded 335 times)

[Updated on: Wed, 05 September 2018 23:26] by Moderator

Re: Undo operation in sirius editor [message #1794781 is a reply to message #1794748]

Thu, 06 September 2018 08:28

Eclipse User

Hi,

This is the refresh command called "Refresh diagram on opening" that is undone. If this is too much confusing for you, you can open a Sirius ticket .
What you can do though is to clear the command stack with a SessionManageListener:
Register it with SessionManager.INSTANCE.addSessionsListener(sessionManagerListener) and use the code:

private final SessionManagerListener sessionManagerListener = new SessionManagerListener.Stub() {
        @Override
        public void notify(Session session, int notification) {
           if (notification == SessionListener.OPENED) {
         session.getTransactionalEditingDomain().getCommandStack().flush();
        }
    };

Regards,

Re: Undo operation in sirius editor [message #1794811 is a reply to message #1794781]

Thu, 06 September 2018 21:49

Eclipse User

Hi, Pierre

Thank you very much, i'll try it.

Re: Undo operation in sirius editor [message #1794826 is a reply to message #1794811]

Fri, 07 September 2018 05:19

Eclipse User

In fact I think this will not work. The cleaning of the command stack should be done when the editor has finished its opening, not the session.

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