Keyboard focus after popup Menu

bee65

I am working on a Qt Quick app that uses QtQuick.Controls Menu. I am having a problem with keyboard focus after the popup Menu is dismissed. Here is a simple example:

import QtQuick
import QtQuick.Controls

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Rectangle {
        anchors.centerIn: parent
        color: "lightsteelblue"; width: 240; height: 25
        Text {
            id: myText
            text:"Press A, B or C"
            anchors.centerIn: parent
        }
        Item {
            objectName: "Key Handler Item"
            id: keyHandler
            focus: true
            Keys.onPressed: (event)=> {
                if (event.key === Qt.Key_A)
                    myText.text = 'Key A was pressed'
                else if (event.key === Qt.Key_B)
                    myText.text = 'Key B was pressed'
                else if (event.key === Qt.Key_C)
                    myText.text = 'Key C was pressed'
            }
        }
    }


    Menu {
        id: contextMenu
        MenuItem { text: "Menu item 1" }
        MenuItem { text: "Menu item 2" }
        MenuItem { text: "Another item" }
    }

    MouseArea {
        anchors.fill: parent
        acceptedButtons: Qt.RightButton
        onClicked: function(mouse) {
            console.log("Right-clicked")
            contextMenu.popup()
        }
    }

    Text {
        text: "Right-click for Menu"
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.bottom: parent.bottom
        anchors.bottomMargin: 30
    }

    onActiveFocusItemChanged:  console.log("main: focus now on: ", activeFocusItem)
}

The output is:

qml: main: focus now on:  QQuickItem(0x555555740010, "Key Handler Item")
qml: Right-clicked
qml: main: focus now on:  QQuickPopupItem(0x555555a03180)
qml: main: focus now on:  MenuItem_QMLTYPE_2(0x555555a0e8c0)
qml: main: focus now on:  MenuItem_QMLTYPE_2(0x555555a10f00)
qml: main: focus now on:  QQuickRootItem(0x55555578d650)

The focus goes to a QQuickRootItem. My question is, what can I do to ensure the keyboard focus goes back to the original item after the menu is dismissed?

bee65

For the record, I have figured it out. The Window has to be changed to ApplicationWindow, then the popup behaves as expected. The ApplicationWindow's contentItem acts as a FocusScope, so when the popup closes, it goes back to whatever had the focus before. If the action triggered by the menu changes the focus, that's ok too.

There is still something weird happening in my application, which was already using ApplicationWindow. For some reason the activeFocus was on the QQuickRootItem, not on the QQuickContentItem. I have added this code and it fixes it:

onActiveFocusItemChanged: {
     if (activeFocusItem === contentItem.parent)
         contentItem.focus = true
}