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Initializing a diagram with default node [message #1024027]

Mon, 25 March 2013 17:08

Phil H

Messages: 267
Registered: November 2012

Senior Member

Hello,

couldn't find an appropriate solution yet to fix my problem. What I want is a default node that is automatically added when a new diagram is created by the user.
I already checked the creation wizard, but I'm not sure what I've got to change there. Does anyone know the piece of code which is relevant to implement this?

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Re: Initializing a diagram with default node [message #1024986 is a reply to message #1024027]

Tue, 26 March 2013 09:50

Daniel König

Messages: 24
Registered: November 2012

Junior Member

Hi Phil!

I think this tutorial is exactly what you are looking for:
http://gmfsamples.tuxfamily.org/wiki/doku.php?id=gmf_tutorial7#diagram_initialization

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Re: Initializing a diagram with default node [message #1028602 is a reply to message #1024027]

Thu, 28 March 2013 13:36

Phil H

Messages: 267
Registered: November 2012

Senior Member

Hi,

thx that worked so far, but I noticed a strange behaviour. I've got the following Metamodel:

@gmf.diagram(onefile="true", diagram.extension="pld", model.extension="pld")
class PLD{

  	attr EString name;
  
  	val FM[*] fms; 
  	val EC ec;
  	val PL pl;
}

The createInitialModel() in the diagram.part package offers me method to set a name and EC/PL objects for my PLD class, but there is no method to add a FMobject. However there is still a getter which returns a list of FM objects. Any idea about this?

[Updated on: Thu, 28 March 2013 13:38]

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Re: Initializing a diagram with default node [message #1031765 is a reply to message #1028602]

Tue, 02 April 2013 06:54

Daniel König

Messages: 24
Registered: November 2012

Junior Member

It should be something like:

private static Model createInitialModel() {
	PLD pld = XYZFactory.eINSTANCE.createPld();
	FM fm = XYZFactory.eINSTANCE.createFM();
	pld.getFM().add(fm); // getFM = your List; Add the fm-Object to this list

	return pld;
}

I didn't test it, but it should work.

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Re: Initializing a diagram with default node [message #1031947 is a reply to message #1031765]

Tue, 02 April 2013 11:51

Phil H

Messages: 267
Registered: November 2012

Senior Member

Thx, .getFM().add has done the trick Smile

One thing I still don't udnerstand is how the order of the positions in the diagram is determined. In the code it doesn't matter in which order I add elements - The FM element is always on the top left position in the diagram. Any Idea how to affect the position in the diagram?

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Re: Initializing a diagram with default node [message #1032098 is a reply to message #1031947]

Tue, 02 April 2013 15:06

Phil H

Messages: 267
Registered: November 2012

Senior Member

It seems that the order within the .emf file determines the inital oder at the diagram. So changing this has done the trick:

class PLD{

  	attr EString name;
  
        val EC ec;
  	val FM[*] fms; 
  	val PL pl;
}

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