ubuntu-phone team mailing list archive

[Николай Шатохин <n.shatokhin@xxxxxxxxx>]

I've already found this solution:
http://qt-project.org/doc/qt-5.0/qtqml/qtqml-cppintegration-contextproperties.html
It
helps. Thanks.


2013/9/30 Michael Zanetti <michael.zanetti@xxxxxxxxxxxxx>

> On Sunday 29 September 2013 13:45:01 Vladimir M. wrote:
> > Sounds like a "context property" use case (you plain set a QObject as a
> > context property for a view's root scope, w/o even registering the
> object's
> > type, and all its properties and invokables become available).
>
> I don't recommend using context properties. While they are useful for some
> cases, this one doesn't seem to be one of those. Using too many global
> context
> properties can make the code very ugly to work with.
>
> You probably want to create something like this:
>
> class ViewController: public QObject
> {
>   Q_PROPERTY(QList<MyClass> viewObjects READ viewObjects NOTIFY
> viewObjectsChanged)
> ...
> QList<MyClass> viewObjects() const {
>   return objectList;
> }
> ...
> };
>
> qmlRegisterType<ViewController>(uri, 0, 1, "ViewController");
>
> Then in QML you can do something like this:
>
> ViewController {
>   id: viewController
> }
>
> Repeater {
>   model: viewController.viewObjects
>   MyView {
>     property var viewObject: viewController.viewObjects[index]
>   }
> }
>
>
> Note that if you want your code to adjust more flexible (i.e. the
> viewObjects
> change a lot), consider using a QAbstractListModel (or some other model)
> instead of a QList.
>
> Hope this helps,
> Michael
>
> >
> > On Sun, Sep 29, 2013 at 6:38 AM, Николай Шатохин
> <n.shatokhin@xxxxxxxxx>wrote:
> > > Hello.
> > >
> > > When I create a class in C++, I can register it for QML and can create
> > > view for it. It's very convenient. But, if I need many objects of the
> same
> > > type, and need to show few views on screen, I got problems.
> > > Is it possible to register QML type for object, not for class?
> > > If I change some object, I need to see only its view changed.
> > >
> > > Best regard,
> > > Nick
> > >
> > > --
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>
>