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Graphiti framework and decorators [message #932806]

Thu, 04 October 2012 08:57

Eclipse User

Hello everybody,
I use currently image decorators to decorate the visualization of pictogramElement.
It works fine. But I have a small problem. I use property sheet to modify some properties of business objects. Depending on the property's values, i want to display a specific icon. In the documentation i found the following:

The list of decorators that shall be applied to a PictogramElement is queried from the IToolBehaviorProvider.getDecorators(PictogramElement) method when a shape is drawn or updated on the diagram by the Graphiti framework.

So,after that i changed a property's value through the property sheet i call the following method:

  IFeatureProvider.updateIfPossible(updateContext)

But the right icon is not displayed. I have first to move the shape in the editor, before the framework remark the change and display the right icon.
i ask me therefore, if it is possible to notify this part of the framework, that is responsible for displaying icons, in the update method so that i don't have to move the shape in the editor.
Does someone has an idea , how i could solve this problem

Many Thanks in advance
Junior

Re: Graphiti framework and decorators [message #933868 is a reply to message #932806]

Fri, 05 October 2012 08:12

Eclipse User

Junior,

you shouold first check if your call to updateIfPossible really invokes any
UpdateFeature and if yes, if that update feature changes anything.

An alternative could also be to link the domain object you modify from the
property sheet with the shape that will hold the decorator. In that case
changing the domain object should cause an update.

Michael

Re: Graphiti framework and decorators [message #935385 is a reply to message #933868]

Sat, 06 October 2012 20:50

Eclipse User

Hallo Michael,
thanks for your reply.

> you shouold first check if your call to updateIfPossible really invokes any
> UpdateFeature and if yes, if that update feature changes anything.

My call to updateIfPossible really works and i can see the changes after the call.

By debbuging, i found out that, before the IToolBehaviorProvider.getDecorator() is called,one method refresh() is called, so i tried the following after the call to
updateIfPossible :
GraphitiShapeEditPart.refresh()
But it does not work.
Actually, i don't know how to solve this issue.

Any hint and/or answer is welcome.
Regards
Junior

Re: Graphiti framework and decorators [message #936982 is a reply to message #935385]

Mon, 08 October 2012 10:39

Eclipse User

Junior,

forcing the refresh could be done by calling refreshRenderingDecorators in
DiagramEditor.

Enforcing the refresh might be needed in case your update feature does not
need to change anything on diagram level. In that case the editor won't get
refreshed automatically.

Michael

Re: Graphiti framework and decorators [message #937310 is a reply to message #936982]

Mon, 08 October 2012 18:02

Eclipse User

Hi Michael,
many , many,many thanks for your reply.
It works now.
Best regards
junior

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