[news.eclipse.modeling.gmf] Re: Creation Tools for pre-defined Elements

[Hallvard Trætteberg <hal@xxxxxxxxxxx>]

I think I have implemented what you describe. I have an external "template" 
model file, with "prototype" elements. For each prototype I create a palette 
entry (controlled by a custom extension point in plugin.xml), and the 
corresponding tool in the palette can then be used to clone the prototype by 
dragging out a rectangle or by drag'n dropping it onto the diagram.

I have created custom Command, EditPolicy, EditPolicyProvider, CreationFactory, 
CreationToolEntry, PaletteDrawer and PaletteProvider classes, i.e. one class for 
almost every role in the main collaborations in GMF/GEF. It would be great to 
find a way to contribute this into GMF, as it's a very powerful mechanism. E.g. 
since the template model file is a standard file (model+diagram pair), new 
prototypes are easily added and existing ones edited.

I can send the code anybody who's interested, but beware that the code is 
complex and undocumented.

Hallvard

Guillaume Gauffre wrote:
> Hi Martin,
>
> I'm trying to do the same thing I think !?
> I want to load/load and replace, some instance of my model by using 
> predefined instances, saved in a repository
> I filled the palette with this repository but I don't find the way to 
> configure the corresponding tool !
> Do you find anything else since your last message ?
>
> Thanks
>
> Guillaume
>
> Martin Prodanov a écrit :
> > Thanks for helping Alex,
> >
> > but the Thing is, that it has to be dinamicly. This means that I have 
> > the properties for an Element on external .ecore file. I read this 
> > file and then decide how many Palette Entries should I create. I.e. we 
> > have "MyElement" and we have a Palette Entry for unspecified 
> > "MyElement", but from the external .ecore file, we read that we have 
> > there "MyElement" with set properties.In this case we can have i.e. 10 
> > different "MyElements" with different properties and for this 10  
> > "MyElements" we have 10 different Palette Entries. The parsing from 
> > the file is already done. I distinguish every Element and I'm at the 
> > point where I have to create Pelette Entry, which itself has to have a 
> > proper Create Tool.So the problem now is how GMF will work with a 
> > Creation Factory which I have written. My Creation Factory can read 
> > the properties and the getNewObject() Method gives back the Element 
> > from the external .ecore whit set properties. As I have seen GMF 
> > passes only "IElementType"s and than decides which Element should EMF 
> > create.
> >
> > I'll be very thankful if somebody can help me with an advice or something
> >
> > Cheers!
> >
> > Martin