[Interest] Qt 5 and filesystem

[André Somers]

Op 8-1-2013 11:59, Mark schreef:
> On Tue, Jan 8, 2013 at 11:14 AM, Иван Комиссаров <abbapoh at gmail.com> wrote:
>> Sorry for the offtop, but Finder can move files since 10.7 or 10.8 - you copy files paths with Cmd+C and move (instead of copying) them with Cmd+Alt+V (in case you didn't know).
>>
>> My question is what the status of itemmodels in qt5? It seems they'll be here for a long time, however this discussion looks very similar to ideas of an itemviews-ng project (https://blog.qt.digia.com/blog/2008/10/24/itemviews-the-next-generation/). I didn't look quite close at this project and i wonder - is it used in qt5 somehow in QML world, or does QML still uses QAbstractItemModel and friends?
>>
>> Иван Комиссаров
>>
>> 08.01.2013, в 12:15, Till Oliver Knoll <till.oliver.knoll at gmail.com> написал(а):
>>
>> Am 08.01.2013 um 04:12 schrieb Charley Bay <charleyb123 at gmail.com>:
>>
>>>> ...
>>>>
>>>> I concede "tree-views" may be necessary in some domains, but generally, I think users hate them, and there are likely better ways to represent information.
>>> Oh! Just don't get me started over the lack of a proper tree view in Mac Finder! I just hate that column view and this "up-up-up-the-file-hierarchy-change-to-next-sibling-and-down-down-down-again"-navigation style which is enforced upon me my the Finder (and the lack of a proper - sic! - tree view).
>>>
>>> But Lion actually "invented" the "resize-the-window-on-any-edge", and I think it was Mountain Lion who "invented" the "rename a file in a file dialog" feature. So I am not yet giving up hope yet ;)
>>>
>>> Yeah right, different users, different needs ;) Or ever tried to move a file with drag'n'drop from one subfolder into another on another branch - within the *same* Finder instance? I tell you, that drives you *crazy* without a tree view - there! again! - on the left side or so... (Not to mention that the Finder *still* lacks a "File Cut" (CMD + X) operation, even though the menu entry is there (greyed out), probably since OS X 10.0)
>>>
>>> So don't cut down that File Forest ;)
>>>
>>> Cheers,
>>>   Oliver
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> My bet is that it uses QAbstractItemModel and friends. iirc the
> itemviews-ng project was "alive" before there was any QML idea and was
> based on QWidgets, still.
> But we're drifting quite a bit here. The question was for filesystem
> stuff in Qt.
Well, QML actually has its own model implementation, that is in part 
based on ideas from itemviews-ng if I understood correctly. You can use 
your old QAbstractItemModel based models in QML though, because there is 
a proxy available to map it to the QML one. Note that the QML model is 
private in Qt5. There is no C++ access to it's interface, so you can't 
create your own 'native' QML model from C++ to use in your QML. The QML 
model does not support trees (or tables, for that matter). It is only 
about lists.

André