palette {
    text: "Please wait...",
    preferredSize: [350, 60],
    orientation: "column",
    alignChildren: "fill",
    barRow: Group {
        orientation: "row",
        bar: Progressbar {
            preferredSize: [300, 16]
        },
        cancelBtn: Button {
            text: "Cancel"
        }
    },
    lblMessage: StaticText {
        alignment: "left",
        text: ""
    },
    warning: Panel {
        orientation: "column",
        alignChildren: "fill",
        message: StaticText {
            text: "Don't make changes to the current document while the script is running!",
            properties: {
                multiline: true
            }
        }
    }
}