QML Detect discarded state of HTML container

Question

I'm using QML with a webengineview container and that webengineview container is killed sometimes (when CPU is high).

My question is, how can I detect with QML the app entered in discarded state for reloading the container?

Answer 1

One way to do it would be like this:

WebEngineView {
    onLifecycleStateChanged: {
        if (lifecycleState === LifecycleState.Discarded) {
            // Do something
        }
    }
}

Or if you need to listen for the state from a different object, you can use a Connections object:

Connections {
    target: myWebEngineView
    onLifecycleStateChanged: {
        if (lifecycleState === LifecycleState.Discarded) {
            // Do something
        }
    }
}

Or, you could simply bind a property directly to the state and use it however you want to:

property bool isDiscarded: myWebEngineView.lifecycleState === LifecycleState.Discarded