Naming conventions in QML

situ117

Hi,

Is there any list of naming conventions in QML ? QML's coding conventions page at http://doc.qt.nokia.com/latest/qml-coding-conventions.html does not say anything about naming conventions.

DenisKormalev

Because it is really similar to Qt naming conventions maybe?

situ117

Actually I find it a little different. So let's say I create my own component which contains other elements:
@
MyRectangle {
id: ????
width: 80; height: 80

Item {
//item1
}

Item {
//item2
}

}
@
Now what should be the default id for MyRectangle ? Should it be "container" or "myRectangle". container is the one used by QML examples at many places for elements which contain other elements.

DenisKormalev

I'm not sure it should be covered with naming convention.

situ117

Since all the names in QML are kind of "global"; the only way to avoid naming conflicts is by following strict naming conventions. It's possible to declare two different elements with same name. Which name would be visible if I use them at third place ? Does it only depend upon order of declaration of elements ?

mbrasser

Hi,

If you create a MyRectangle.qml as follows:

@
//MyRectangle.qml
Rectangle {
id: ????
width: 80; height: 80

Item {
    id: item1
}
 
Item {
    id: item2
}

}
@

The id you assign to the top level Rectangle will not be visible "outside" the component. For example, in the following case:

@
//main.qml
Item {
MyRectangle {}
}
@

the id assigned to the Rectangle in MyRectangle.qml will not be visible in main.qml. Does this answer your question about naming conflicts/visibility, or was there a different case you were concerned with?

Regards,
Michael

situ117

Hi,

Can you provide me any page which explains how names are managed and shadowed in QML ?

mbrasser

Hi,

The scope documentation can be found at http://doc.qt.nokia.com/4.7-snapshot/qdeclarativescope.html -- I think this should have the information you are after.

Regards,
Michael