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Save and Restore Models to file [message #1799823]

Fri, 14 December 2018 09:27

cenk Mising name

Messages: 159
Registered: July 2009

Senior Member

Hi,
On gef5
What is best way to store/restore to file all contents defined on contentviewer.
I want to save and open graphics editor.

On gef3 we have used "public void doSave(IProgressMonitor monitor)" method of GraphicalEditorWithFlyoutPalette

What is best solution for Gef5

Thank you

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Re: Save and Restore Models to file [message #1799917 is a reply to message #1799823]

Mon, 17 December 2018 13:12

Patrick Muscat

Messages: 14
Registered: May 2018

Junior Member

Hello,

GEF5 main goal is the representation of the model. Changes on the model are made through doAdd/RemoveContent for children (the Parts) and doAdd/RemoveAnchorage for connections. These methods can apply changes immediatly or in a "transaction" which can be commited at user will (Ctrl-S or save button).

So it is the model responsibility to persist its state and GEF5 is completly independant, even for the "save" request handling. In our case, the model is hosted by EMF, the "save" shortcut and toolbar for the save button (undo, ...) are managed by E4. Save action just commits an EMF transaction, GEF5 is not involved.

It should be pretty easy to let the GEF5 diagram container provide the save button and handle save action since the data modeled by GEF5 is available for the container.

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