如何使用QML StackView的status属性？

import QtQuick 2.0
import QtQuick.Controls 2.0

ApplicationWindow {
    visible: true
    width: 400
    height: 300

    StackView {
        id: stackView
        anchors.fill: parent

        initialItem: Page1 {}

        Component.onCompleted: {
            // 监听status属性的变化
            stackView.statusChanged.connect(function(status) {
                if (status === StackView.Pushing || status === StackView.Popping) {
                    // 在页面推入或者弹出的过程中禁用用户的交互
                    stackView.interactive = false;
                } else if (status === StackView.Busy) {
                    // 在StackView处于忙碌状态时显示一个加载动画
                    loadingAnimation.start();
                } else {
                    // 恢复用户的交互，并停止加载动画
                    stackView.interactive = true;
                    loadingAnimation.stop();
                }
            });
        }
    }

    Rectangle {
        id: loadingAnimation
        width: 50
        height: 50
        color: "red"
        radius: width / 2
        opacity: 0

        SequentialAnimation {
            id: animation
            loops: Animation.Infinite

            PropertyAnimation {
                target: loadingAnimation
                property: "opacity"
                from: 0
                to: 1
                duration: 500
            }

            PropertyAnimation {
                target: loadingAnimation
                property: "opacity"
                from: 1
                to: 0
                duration: 500
            }
        }
    }

    Component {
        id: Page1
        Rectangle {
            width: 400
            height: 300
            color: "blue"

            Button {
                text: "Go to Page 2"
                anchors.centerIn: parent
                onClicked: stackView.push(page2)
            }
        }
    }

    Component {
        id: Page2
        Rectangle {
            width: 400
            height: 300
            color: "green"

            Button {
                text: "Go back to Page 1"
                anchors.centerIn: parent
                onClicked: stackView.pop()
            }
        }
    }
}