nixos/other/quickshell/bar/systray/MenuItem.qml

import QtQuick
import QtQuick.Layouts
import Quickshell
import Quickshell.Widgets
import Quickshell.DBusMenu
import "../../theme" as Theme
import "../.."

MouseArea {
    id: root
    required property QsMenuEntry entry
    property alias expanded: childrenRevealer.expanded
    property bool animating: childrenRevealer.animating || (childMenuLoader?.item?.animating ?? false)
    // appears it won't actually create the handler when only used from MenuItemList.
    onExpandedChanged: {}
    onAnimatingChanged: {}

    signal close

    implicitWidth: row.implicitWidth + 4
    implicitHeight: row.implicitHeight + 4

    hoverEnabled: true
    onClicked: {
        if (entry.hasChildren)
            childrenRevealer.expanded = !childrenRevealer.expanded;
        else {
            entry.triggered();
            if (entry.toggleType == ToggleButtonType.None)
                close();
        }
    }

    Rectangle {
        anchors.fill: parent
        visible: root.containsMouse || childrenRevealer.expanded

        color: Theme.Colors.menuItemColor1
    }
    ColumnLayout {
        id: row
        anchors.fill: parent
        anchors.margins: 2
        spacing: 0

        RowLayout {
            id: innerRow

            Item {
                implicitWidth: 22
                implicitHeight: 22

                MenuCheckBox {
                    anchors.centerIn: parent
                    visible: entry.buttonType == QsMenuButtonType.CheckBox
                    checkState: entry.checkState
                }

                MenuRadioButton {
                    anchors.centerIn: parent
                    visible: entry.buttonType == QsMenuButtonType.RadioButton
                    checkState: entry.checkState
                }

                MenuChildrenRevealer {
                    id: childrenRevealer
                    anchors.centerIn: parent
                    visible: entry.hasChildren
                    onOpenChanged: entry.showChildren = open
                }
            }

            Text {
                text: entry.text
                color: entry.enabled ? Theme.Colors.menuItemColor2 : Theme.Colors.menuItemColor3
            }

            Item {
                Layout.fillWidth: true
                implicitWidth: 22
                implicitHeight: 22

                IconImage {
                    anchors.right: parent.right
                    anchors.verticalCenter: parent.verticalCenter
                    source: entry.icon
                    visible: source != ""
                    implicitSize: parent.height
                }
            }
        }

        Loader {
            id: childMenuLoader
            Layout.fillWidth: true
            Layout.preferredHeight: active ? item.implicitHeight * childrenRevealer.progress : 0

            readonly property real widthDifference: {
                Math.max(0, (item?.implicitWidth ?? 0) - innerRow.implicitWidth);
            }
            Layout.preferredWidth: active ? innerRow.implicitWidth + (widthDifference * childrenRevealer.progress) : 0

            active: root.expanded || root.animating
            clip: true

            sourceComponent: MenuView {
                id: childrenList
                menu: entry
                onClose: root.close()

                anchors {
                    top: parent.top
                    left: parent.left
                    right: parent.right
                }
            }
        }
    }
}