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[GEF5 MVC] content object without visual [message #1820825]

Wed, 29 January 2020 19:15

Frank Benoit

Messages: 179
Registered: July 2009

Senior Member

Hi

given a model with a tree like structure.
The root "Model", 2 childs "Data"

Data is mapped to a DataContentPart and does have a visual representation.

But Model has not visible representation.

Does it make sense to set the viewer content to Model or to the list of children?

If I set Model...
Let the contentpartfactory create a content part for M (AbstractContentPart<Group>). There let doGetContentChildren() define the children (C).

Frank

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Re: [GEF5 MVC] content object without visual [message #1820832 is a reply to message #1820825]

Wed, 29 January 2020 22:01

Matthias Wienand

Messages: 230
Registered: March 2015

Senior Member

Hi Frank,

I would still introduce that ModelPart:

- simplifies setting the viewer contents
- provides an extra visual that can be used for styling, layout, effects, event handling
- enables adapter bindings, e.g. ContentPolicy for adding/removing data
- allows extension w.r.t. displaying multiple models or other data

Best regards,
Matthias

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