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Capturing/Listening to the start point of a Label Edit Event on a diagram [message #1729022]

Sat, 09 April 2016 16:08

Parsa Pourali

Messages: 210
Registered: February 2014

Senior Member

Hi Everyone,

Do you guys have any idea on how I can listen to the starting of a label edit ?

Currently, we can define a tool for EditLabel in Sirius and run a java service to do a desired action. However, it only fires when the editing is finished. For example, I need to show a form when the user clicks on a label to edit. If I write a java service to show the form, the form is shown when the editing action is done. I need to show the form when the label has entered in the editing mode !

I tried to use Input Label Expression as it is fired at the beginning of the label edit. But, for some reasons it run the java service 6 times !!!

To give you a more concrete idea, I need to show a Xtext embedded editor to the user to edit the transition label.

Thank you,
Bests,
Parsa

[Updated on: Sun, 10 April 2016 01:36]

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Re: Capturing/Listening to the Start Label Edit Event on a diagram [message #1729212 is a reply to message #1729022]

Tue, 12 April 2016 08:37

Felix Dorner

Messages: 392
Registered: December 2015

Senior Member

On 09-Apr-16 18:08, Parsa Pourali wrote:
> I tried to use Input Label Expression as it is fired at the beginning of
> the label edit. But, for some reasons it run the java service 6 times !!!
Maybe it's normal, but sure sounds fishy.. Maybe you can produce a
simple example so we can see why it's executed that often?

> To give you a more concrete idea, I need to show a Xtext embedded editor
> to the user to edit the transition label.

Very interesting. I don't know if this is possible, but for sure I would
like to see a solution for this.

Felix

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Re: Capturing/Listening to the Start Label Edit Event on a diagram [message #1729251 is a reply to message #1729212]

Tue, 12 April 2016 12:04

Parsa Pourali

Messages: 210
Registered: February 2014

Senior Member

Hi Felix,

>Maybe it's normal, but sure sounds fishy.. Maybe you can produce a
>simple example so we can see why it's executed that often?

You can just create an edge that connects to nodes (e.g. a transition in state machine). Then crate an edit label tool for the transition edge and in the input label expression of the editlabel just add ==>> service:myservice()

also add JOptionPane.ShowMessageDialog(null, "myservice");

into the body of the myservice method. You can see that it displays the option dialog 6 times !!! Not sure if this 6 is fixed though Wink

Best Regards,
Parsa

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