Keep original viewport when switching back from table to DRD view

[mschoe]

Describe the Bug

When switching between the DRD and a sub view (decision table, literal expression) the DRD viewbox is reset to (0,0) on any sub view change. I'd expect the viewbox to stay where it originally was so that users have a better switching behavior.

Steps to Reproduce

• I'm in the DMN table view and save my latest changes
• I switch from the DMN table view to the DRD view
• The decision element is focused in the upper left corner of the view and is partially hidden by the element palette

Describe the Solution

• [ ] I would expect that the modeler keeps the original viewport when I switch back to the DRD view.

Additional Context

This has to be fixed in dmn-js

Environment affects all OS modeler v. 3.4.0

[nikku]

From what I understand you're asking for the following:

Keep the current DRD viewport when switching to other editors and back to the DRD. Or in other words, if I centered the diagram, switch to a table, switch back, the diagram should still be centered at the previous position.

Does that summarize your feature request?

[mschoe]

I think the following screencast demonstrates it much better. I would expect that the modeler keeps the the viewport when I switch to the dmn view.

[nikku]

Thanks for clarifying. A legit feature request. :+1:

[mschoe]

:heart:

[iamparthshukla]

Is this issue up for someone to work on? I would love to give this a try!

[techytushar]

Hey @nikku @pinussilvestrus I would like to work on this, please can you tell in which files I should look into in dmn-js. I tried to figure it out but I am not able to since there are a lot of files.