handover 'property references' to JavaScript?

Frime

Hi together,

does anybody has an idea how to get something like this working?

property int test;
onTestChanged: console.log("Awesome!!!")

// pseudo callback caller 
Component.onCompleted: callbackHandler(test); 

function callbackHandler(prop)
{
  prop = 42;
 // now I expect "Aawesome" output.
}

Is there a way to handover property references to java script functions?

I would like to register a callback to a third party JavaScript library running in QML JS Engine. I know, that this isn't the qtest way to get things running, but in this case it's kind of ... let's call "Case Study" ^^

Thank you very much in advance!
Frime

xargs1

If you pass an object, rather than an int, it's a reference:

    property var test: ({ value: 1 })

    Component.onCompleted: {
        console.log(test.value);    // prints 1
        callback(test);
        console.log(test.value);   // prints 42
    }

    function callback(prop) {
        prop.value = 42;
    }

Unfortunately, no "changed" signal is emitted by "var" properties, so you can't have an onChanged handler.