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

[markitus <jxtamarc@xxxxxxxxx>]

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!
>>>>>>>
>>>>>>>
>>>>>>>