Why manually map C++ object properties and QML elements?

bkamps

Hi,

I was wondering, let's say you define your own QML "element" :

Dialog.qml:

@
Rectangle {
property string text: ""
color: "black"

Text {
    id: dialogText
    anchors.centerIn: parent
    text: parent.text
    color: parent.color
}

}
@

Now I want to map my C++ Object (text and color properties) to this own defined Dialog qml element. How to do this?

C++ Object:

@
class Dialog : public QObject
{
Q_OBJECT
Q_PROPERTY(QString text READ Text NOTIFY TextChanged)
Q_PROPERTY(QString color READ Color NOTIFY ColorChanged)

public:
Dialog(QObject *parent = 0);
~Dialog();

const QString & Text();
const QString & Color();

signals:
void TextChanged();
void ColorChanged();

private:
QString mText;
QString mColor;
};
@

If I do a setContextProperty() I still have to manually set all the properties of the Dialog.qml to the C++ object:

C++
@
view.rootContext()->setContextProperty("myDialog", myDialogObject);
@

And Qml:

@
Dialog { text: myDialog.text; color: myDialog.color }
@

Is there a way that QML automatically maps the properties of the C++ object to the QML element?

I have seen that if I make C++ Dialog object a plugin (QDeclarativeItem) I still need to manually map the properties!

Enlighten me please :)