Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc) » [EMF Forms] Tree Master Detail endless-loop
| [EMF Forms] Tree Master Detail endless-loop [message #1710870] |
Sat, 10 October 2015 00:13  |
 Hauke Fuhrmann
Messages: 30
Registered: January 2015 |
Member |
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Hi there,
I have a pretty simple domain model: A root element 'A' with two lists
of elements 'B' and 'C'
A
+
|
+->B*
|
+->C*
Now I thought it was obvious to display it in a tree master details
view. However, it is not:
I make a View for 'A' with exactly the Tree Master Details element,
nothing more.
The Problem is that I don't know which root Element to select (and how).
So when I do not set any root, I assume 'A' is the root. So the tree is
correctly shown, but on the right hand side when 'A' is selected,
another Tree Master Details View is opened, in which I can again select
'A' and get a third Tree Master Details View, and so on and so on. At
the third level I get an SWT Exception "org.eclipse.swt.SWTError: No
more handles"
So how to set the root correctly? I can set a view element to the Tree
Master Detail but there I cannot select any root element. The
corresponding entry seems to be read-only. And what element would I
choose there?
I'm using version 1.7
Cheers,
Hauke
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| Re: [EMF Forms] Tree Master Detail endless-loop [message #1711071 is a reply to message #1710870] |
Mon, 12 October 2015 16:44  |
Jonas Helming
Messages: 699
Registered: July 2009 |
Senior Member |
|
|
Hi,
I just noticed, that we haven't updated our documentation about Tree
Master Details in a while, I think this might help:
http://eclipsesource.com/blogs/tutorials/emf-forms-view-model-elements/#treemasterdetail
Best regards
Jonas
Am 10.10.2015 um 02:13 schrieb Hauke Fuhrmann:
> Hi there,
>
> I have a pretty simple domain model: A root element 'A' with two lists
> of elements 'B' and 'C'
>
> A
> +
> |
> +->B*
> |
> +->C*
>
> Now I thought it was obvious to display it in a tree master details
> view. However, it is not:
>
> I make a View for 'A' with exactly the Tree Master Details element,
> nothing more.
> The Problem is that I don't know which root Element to select (and how).
>
> So when I do not set any root, I assume 'A' is the root. So the tree is
> correctly shown, but on the right hand side when 'A' is selected,
> another Tree Master Details View is opened, in which I can again select
> 'A' and get a third Tree Master Details View, and so on and so on. At
> the third level I get an SWT Exception "org.eclipse.swt.SWTError: No
> more handles"
>
> So how to set the root correctly? I can set a view element to the Tree
> Master Detail but there I cannot select any root element. The
> corresponding entry seems to be read-only. And what element would I
> choose there?
>
> I'm using version 1.7
>
> Cheers,
> Hauke
--
--
Jonas Helming
Get professional Eclipse developer support:
http://eclipsesource.com/en/services/developer-support/
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| Re: [EMF Forms] Tree Master Detail endless-loop [message #1711139 is a reply to message #1711071] |
Tue, 13 October 2015 12:10 |
Hauke Fuhrmann
Messages: 30
Registered: January 2015 |
Member |
|
|
That makes it clearer, thanks, works!
Am 12.10.2015 18:44, schrieb Jonas Helming:
> Hi,
>
> I just noticed, that we haven't updated our documentation about Tree
> Master Details in a while, I think this might help:
> http://eclipsesource.com/blogs/tutorials/emf-forms-view-model-elements/#treemasterdetail
>
> Best regards
>
> Jonas
>
>
> Am 10.10.2015 um 02:13 schrieb Hauke Fuhrmann:
>> Hi there,
>>
>> I have a pretty simple domain model: A root element 'A' with two lists
>> of elements 'B' and 'C'
>>
>> A
>> +
>> |
>> +->B*
>> |
>> +->C*
>>
>> Now I thought it was obvious to display it in a tree master details
>> view. However, it is not:
>>
>> I make a View for 'A' with exactly the Tree Master Details element,
>> nothing more.
>> The Problem is that I don't know which root Element to select (and how).
>>
>> So when I do not set any root, I assume 'A' is the root. So the tree is
>> correctly shown, but on the right hand side when 'A' is selected,
>> another Tree Master Details View is opened, in which I can again select
>> 'A' and get a third Tree Master Details View, and so on and so on. At
>> the third level I get an SWT Exception "org.eclipse.swt.SWTError: No
>> more handles"
>>
>> So how to set the root correctly? I can set a view element to the Tree
>> Master Detail but there I cannot select any root element. The
>> corresponding entry seems to be read-only. And what element would I
>> choose there?
>>
>> I'm using version 1.7
>>
>> Cheers,
>> Hauke
>
>
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