[news.eclipse.modeling.gmf] Re: copy paste issue

[markitus <jxtamarc@xxxxxxxxx>]

El dia Tue, 21 Apr 2009 16:00:10 +0200, en/na Daniel va escriure:

> Hi Marc,
> 
> unfortunately I ran into the same problems, recently. Copy/paste
> basically works - meaning I am able to copy compartments and components
> from one compartment to another (visually). If I modify properties of
> the copied component/compartment, the source-component/compartment is
> changed too. After reopening the diagram file, all copied elements
> disappeared, although they are still visible in the generated xmi-file.
> I am already using uuids.
> 
> Did you already manage to get copy/paste working? Any hints?
> 
> Thanks in advance,
> 
> Daniel
> 
> markitus wrote:
>> Hi Thomas,
>> 
>> I create a copy through the context menu (right-click on selected
>> element (s)), then copy/cut and paste. Easy, straightforward. Actually,
>> it doesn't work at all if I try with shortcuts.
>> 
>> Weird weird weird. I guess it has something to do with the original
>> creation of the ecore. The thing is that the development of this app
>> started around 2 years ago, and perhaps it's a bit too late to start
>> back again from scratch.
>> 
>> thanks for your help.
>> 
>> REGARDS,
>> Marc.
>> 
>> El dia Mon, 23 Feb 2009 18:58:35 +0100, en/na Thomas Beyer va escriure:
>> 
>>> Hello Markitus,
>>>
>>> the behaviour you describe sounds to me like you are using shortcuts,
>>> not real copies of elements.
>>> How do you create your copy?
>>> Select -> <Ctrl> + <C> -> <Ctrl> + <V> ?
>>>
>>> Regards Thomas
>>>
>>> markitus schrieb:
>>>> Hi Thomas,
>>>>
>>>> I did exactly as you said (step 1). Actually it was already done
>>>> before I started trying to copy paste. I'm getting the same errors as
>>>> Tobias. If I change smth in the new copied element, whatever change I
>>>> do on this new element, is reflected on the original too. So there
>>>> must be some base errors that leads us to this behavior.
>>>>
>>>> I can't understand why it's behaving like this, and for sure I don't
>>>> want to give up ( I can't ), but it's really starting to be quite
>>>> discouraging. It seems so obvious that it should SIMPLY work...
>>>>
>>>> good to know, Tobias, that I'm not alone in this fight!
>>>>
>>>>
>>>> El dia Fri, 20 Feb 2009 17:12:12 +0100, en/na Thomas Beyer va
>>>> escriure:
>>>>
>>>>> Never give up, guys ;-)
>>>>>
>>>>> So first of all:
>>>>> Did you both make sure to use uuids for your semantic model as I
>>>>> described earlier in step 1?
>>>>>
>>>>> If so, copy paste should at least work for elements placed directly
>>>>> on the canvas.
>>>>>
>>>>> So you must add the following extension to your plugin-xml:
>>>>> <extension point="org.eclipse.emf.ecore.extension_parser">
>>>>>     <parser type="MY_SEMANTIC_MODEL_FILE_EXTENSION"
>>>>> 
class="org.eclipse.gmf.runtime.emf.core.resources.GMFResourceFactory">
>>>>>     </parser>
>>>>> </extension>
>>>>>
>>>>> Where MY_SEMANTIC_MODEL_FILE_EXTENSION seriously only is the
>>>>> file-extension of your editor-files.
>>>>>
>>>>> Step 2 was the solution to make copy/paste work in compartments
>>>>> (container-elements).
>>>>>
>>>>>
>>>>> Regards, Thomas
>>>>>
>>>>>
>>>>> Am 20.02.2009 16:06, schrieb Tobias:
>>>>>> Hello Marc,
>>>>>>
>>>>>> it seems you have the same problem I had (and still have). The
>>>>>> point is, that the elements do not disappear after they have been
>>>>>> copied, but that only their views are copied, I guesss. To verify
>>>>>> this, please copy-paste an element and then modify it. If I'm
>>>>>> right, the original element will get changed, too.
>>>>>>
>>>>>> However, this is not a solution to your problem (I wish it were, as
>>>>>> then my problem would be solved as well), but maybe it gives you
>>>>>> some idea of where to begin. For me, I tried a few days to solve it
>>>>>> before I finally gave up... :-(
>>>>>>
>>>>>> Regards, and good luck,
>>>>>> Tobias
>>>>>>
>>>>>>
>>>>>>
>>>>>> markitus schrieb:
>>>>>>> Hi Thomas,
>>>>>>>
>>>>>>> Perhaps I misunderstood or I missed something. But wouldn't the
>>>>>>> result be the same (or similar) if we extend
>>>>>>> AbstractClipboardSupport (which implements IClipboardSupport) and
>>>>>>> rewrite these methods? Anyway, I'm clearly confused, as you see.
>>>>>>> My problem is not pasting into compartments , I didn't even get
>>>>>>> that far yet :( . I've enabled the copy/Paste option so it shows
>>>>>>> up in the contextual menu. I'm being able to copy or paste
>>>>>>> whatever elements I want to(graphically), but when I try to make
>>>>>>> these changes persistent these new copied elements simply
>>>>>>> disappear. Even if I add an original object from the palette after
>>>>>>> a copy/paste action, the previously copied elements disappear from
>>>>>>> the canvas. It is so weird!!
>>>>>>>
>>>>>>> So I'm not sure if i have to rewrite anything since I'm not trying
>>>>>>> to do anything special, just a simple copy paste action with
>>>>>>> simple elements (not compartments).
>>>>>>> Should I expect this to work straight, or should I rewrite some
>>>>>>> code ?
>>>>>>>
>>>>>>> Thanks for your help.
>>>>>>>
>>>>>>> Marc.
>>>>>>>
>>>>>>> El dia Thu, 19 Feb 2009 19:22:49 +0100, en/na Thomas Beyer va
>>>>>>> escriure:
>>>>>>>
>>>>>>>> Hi Markitus,
>>>>>>>>
>>>>>>>> I really struggled a long time with cut, copy & paste, especially
>>>>>>>> pasting into compartments.
>>>>>>>>
>>>>>>>> From what I can tell, GMF provides everything you need and
>>>>>>>> implements a very powerful framework around copy-paste. If you
>>>>>>>> see all the related classes, its a quiet complex job. Marios
>>>>>>>> approach might also work for your use-case, unfortunately I never
>>>>>>>> got it working for my editors.
>>>>>>>>
>>>>>>>> There is just two little hints, I'd like to give you: 1. Make
>>>>>>>> sure to use uuids for your semantic model as described in this
>>>>>>>> post:
>>>>>>>> http://serdom.eu/ser/2008/07/02/eclipse-gmf-enabling-uuids-in-
>>>> semantic-
>>>>>>> model-the-simplest-way
>>>>>>>> There are lots of others threats in this group, adressing exactly
>>>>>>>> this issue as well.
>>>>>>>>
>>>>>>>> 2. Fork the class NotationClipboardOperationHelper(in plugin
>>>>>>>> org.eclipse.gmf.runtime.notation.providers) and modify the
>>>>>>>> following methods:
>>>>>>>> a)
>>>>>>>> static EObject getSemanticPasteTarget(View view) { View parent =
>>>>>>>> (View) view.eContainer(); return
>>>>>>> parent.getElement();
>>>>>>>> }
>>>>>>>>
>>>>>>>> b)
>>>>>>>> private boolean shouldAllowPaste(
>>>>>>>> PasteChildOperation overriddenChildPasteOperation) { EObject
>>>>>>>> eObject = overriddenChildPasteOperation.getEObject(); EObject
>>>>>>>> parentEObject = overriddenChildPasteOperation
>>>>>>>> .getParentEObject(); //implement your logic here, that checks, if
>>>>>>>> eObject is allowed
>>>>>>> zo be
>>>>>>>> can be pasted in the parentEObject
>>>>>>>> }
>>>>>>>>
>>>>>>>> I got the clue from this page:
>>>>>>>> http://wiki.eclipse.org/
>> GMF_Newsgroup_Q_and_A#How_to_make_copy.2Fpaste_work_on_compartments.3F
>>>>>>>> , which contains so many useful solutions!!!
>>>>>>>>
>>>>>>>> Forking basically means, you import the plugin above from the
>>>>>>>> eclipse cvs base, modify the code and use your customized plugin
>>>>>>>> for your application, rcp or whatever. (just in case you struggle
>>>>>>>> with the term, like I used to)
>>>>>>>> Let me know, if you need any further help.
>>>>>>>>
>>>>>>>>
>>>>>>>> HTH
>>>>>>>> Regards,
>>>>>>>> Thomas
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> markitus schrieb:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> I'm trying to copy and paste single elements from a model into a
>>>>>>>>> new model. Apparently it looks like it's done, since I can see a
>>>>>>>>> graphical copy of that element, but if I try to save the diagram
>>>>>>>>> and open it back it just disappears.
>>>>>>>>>
>>>>>>>>> any ideas?? this is starting to drive me crazy. I haven't been
>>>>>>>>> able to find any complete and clear example of a simple copy
>>>>>>>>> paste action on GMF. Many people has already asked this issue on
>>>>>>>>> this list before me but it seems like there aren't any
>>>>>>>>> convincing solution.
>>>>>>>>>
>>>>>>>>> Please, help!
>>>>>>>>>
>>>>>>>>> thank you!
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>

Hi Daniel, 

I'm afraid I don't have good news for you. I just gave it up. I didn't 
get any closer, I tried to update all the emf/gmf plugins but it didn't 
work out after all. I'm sorry.

I'm just back here to find a solution but it looks like i was the last 
one asking about this. I spent a great amount of time attempting to 
copy / paste but I didn't even take a single step forward. I don't want 
to discourage you but I wouldn't waste much time with this. 

anyway, good luck!! and of course, if you manage to solve it, tell me 
how! ;)

cheers, 

marc.