#' tab UI Function
#'
#' @description A shiny Module.
#'
#' @param id,input,output,session Internal parameters for {shiny}.
#'
#' @noRd 
#'
#' @importFrom shiny NS tagList 
#' @import DT
mod_tab_ui <- function(id){
  ns <- NS(id)
  tagList(
    
    DT::dataTableOutput(ns("tab"))
 
  )
}
    
#' tab Server Functions
#'
#' @noRd 
mod_tab_server <- function(id,dat){
  moduleServer( id, function(input, output, session){
    ns <- session$ns
    output$tab<- DT::renderDataTable({
      validate(
        need(nrow(dat)>0, 'Wait. Wrong button. There is nothing here. CLick something else.')
      )
      DT::datatable(dat,
                    filter="top",
                    options = list(scrollX=TRUE,
                                   scrollY=TRUE,
                                   paging = TRUE, searching = TRUE,
                                   fixedColumns = FALSE, autoWidth = TRUE
                                   ))
      
    })
    
 
  })
}
    
## To be copied in the UI
# mod_tab_ui("tab_ui_1")
    
## To be copied in the server
# mod_tab_server("tab_ui_1")