[Interest] Design Issue with QAbstractItemModel & QTreeView

[Sébastien Le Ray]

Hi,

Thanks for the pointer (guess I already read it while searching). The 
second answer is what I'm currently heading toward but that's quite 
cumbersome


Le 04/08/2016 à 22:20, Bernhard Lindner a écrit :
> I have seen that problem before:
>
> http://stackoverflow.com/q/36412671/1421332
>
> Unfortunately no answer there too.
>
>> I'm not sure what are you talking about. But what about
>> beginInsertRows() and endInsertRows()? Between this methods you should
>> add new data, and this data can has child rows.
>>
>> What is the problem?
>>
>> On 04.08.2016 19:48, Sébastien Le Ray wrote:
>>> Hi list,
>>>
>>> I'm currently designing an application which presents its data in a
>>> tree. I have a QAbstractItemModel making a bridge between these data
>>> and the view, so far so good.
>>>
>>> However I'm stuck when it comes to react to underlying data structure
>>> changes, specifically when rows are added and removed. Model has to
>>> react before and after the row is added, however, the only information
>>> it gets is "row added" signal. Worse, adding a row can add the row and
>>> some subitems (some objects creates mandatory children).
>>>
>>> What is the proper way to deal with this? Should I have some kind of
>>> proxy between the data and the mode?
>>>
>>> Regards
>
>
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