Cockpit-cpp/ZjQt/Run/QtQuick/Controls/Basic/DialogButtonBox.qml

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import QtQuick
import QtQuick.Templates as T

T.DialogButtonBox {
    id: control

    implicitWidth: Math.max(implicitBackgroundWidth + leftInset + rightInset,
                            (control.count === 1 ? implicitContentWidth * 2 : implicitContentWidth) + leftPadding + rightPadding)
    implicitHeight: Math.max(implicitBackgroundHeight + topInset + bottomInset,
                             implicitContentHeight + topPadding + bottomPadding)
    contentWidth: contentItem.contentWidth

    spacing: 1
    padding: 12
    alignment: count === 1 ? Qt.AlignRight : undefined

    delegate: Button {
        width: control.count === 1 ? control.availableWidth / 2 : undefined
    }

    contentItem: ListView {
        model: control.contentModel
        spacing: control.spacing
        orientation: ListView.Horizontal
        boundsBehavior: Flickable.StopAtBounds
        snapMode: ListView.SnapToItem
    }

    background: Rectangle {
        implicitHeight: 40
        x: 1; y: 1
        width: parent.width - 2
        height: parent.height - 2
        color: control.palette.window
    }
}