ComboBox text reset on model update

Imynn

Hello! As far as I understand, in ComboBox every time model gets updated from C++, the text in editable Text Edit gets erased. Is there a way to update model without resetting text? And also, is there a way to have a dropdown list opened and being able to write in text edit?

J.Hilk

hi @Imynnand welcome

Is there a way to update model without resetting text?

possibly this:

 ComboBox{
        id:myCombobox
        anchors{
            left: parent.left
            right: parent.right
            top: parent.top
        }
        height: 50

        editable: true


        Binding{
            target: myCombobox
            property: "model"
            value: root.count
            when: !myCombobox.activeFocus
        }
    }

    property int count: 1

    Timer{
        id:changeModel
        running: true
        interval: 1000
        repeat: true
        onTriggered: count++
    }

And also, is there a way to have a dropdown list opened and being able to write in text edit

you probably will have to overwrite the popup component of the combox to modify that behaviour

Imynn

@J-Hilk Thank you for your reply! I can see that this binding adds something to model. But what if I type something in text edit, and in my C++ code the model gets reset. For example, I have TextField in ComboBox

TextField {
    text: root.editText
    onTextChanged: {
        updateModel() 
    }

void CustomModel::updateModel()
{
    beginResetModel();
    endResetModel();
}

But whenever it happens, text in text edit gets erased. So for example. I write one letter in text edit, model gets updated, then I type another letter, and the text gets erased. The most interesting thing is that text that I typed gets erased every second attempt to write something. And if there was some text before it remains unchanged, only my input is affected. Any ideas why it happens? Thank you