Setter function for internal qml object

Moisi

Hi,

I have a component (MyItem.qml) which is an Item with another Item with a value inside. Like this:

Item {
	readonly property Item wrapper: private.wrapper // this readonly property is important.
        function setValue( newValue ) { private.wrapper.value = newValue; }
	
	Item {
		id: private
		property Item wrapper: Item {
			property int value: 42
		}
	}
}

Now imagine that I do not want to allow user to change the value property without using the setter function. For example:

Item {
	id: root
	MyItem { id: myItem }
	Column {
		Button { text: "allowed"; onClicked: myItem.setValue(13) }
		Button { text: "not allowed"; onClicked: myItem.wrapper.value = 13 } // This should not be allowed
	}
}

Does someone have any trick or pattern to do this ?

jeremy_k

Have you looked at property alias?

MyItem.qml:

Item {
    property alias text: subText.text
    Text { id: subtext }
}

TopLevel.qml:

Item {
    MyItem { id: myItem }
    Button { onClicked: myItem.text = "clicked" }
}

Moisi

Thanks for your answer ^^

I totally forgot the existance of alias ! Thank you for the remind ^^