Add tags (demo)

export script_name        = "Add tags"
export script_description = "Just a demo script"
export script_author      = "dreamer2908"
export script_version     = "0.1"

processSubtitle = (subtitle, selected, active, tags) ->
    for si,li in ipairs(selected)
            line = subtitle[li]
            line.text = "{"..tags.."}"..line.text
            subtitle[li] = line
    return selected

mainDialog = {
    {class:"label",x:0,y:0,width:1,height:1,label:"Tags to add:"},
    {class:"edit", name:"tags", value:"", x:1, y:0}
}

macro_function = (subtitle, selected, active) ->
    pressed, results = aegisub.dialog.display(mainDialog, {"OK", "Cancel"}, {cancel:"Cancel", ok:"OK"})
    if pressed == "OK"
            tags = results.tags
            processSubtitle(subtitle, selected, active, tags)
            aegisub.set_undo_point(script_name)
    else aegisub.cancel()
    return selected

aegisub.register_macro(script_name, script_description, macro_function)