R/mod_sample_size.R

In ordinalsimr: Compare Ordinal Endpoints Using Simulations

#' sample_size UI Function
#'
#' @description A shiny Module.
#'
#' @param id,input,output,session Internal parameters for {shiny}.
#'
#' @noRd
#'
#' @importFrom shiny NS tagList
#' @importFrom shinyWidgets numericRangeInput
mod_sample_size_ui <- function(id) {
  ns <- NS(id)

  default_size_min <- getOption("ordinalsimr.default_size_min", default = 30)
  default_size_max <- getOption("ordinalsimr.default_size_max", default = 100)

  tagList(
    numericRangeInput(
      inputId = ns("sample_n"), label = "Total Sample Size Range",
      value = c(default_size_min, default_size_max), step = 1
    ),
    numericInput(
      inputId = ns("sample_step_size"), label = "Step Size",
      value = 1, min = 1, max = Inf
    )
  )
}

#' sample_size Server Functions
#'
#' @noRd
mod_sample_size_server <- function(id) {
  moduleServer(id, function(input, output, session) {
    ns <- session$ns


    sample_n <- reactive({
      seq(round(input$sample_n[1]), round(input$sample_n[2]),
        by = round(input$sample_step_size)
      )
    })

    return(sample_n)
  })
}

## To be copied in the UI
# mod_sample_size_ui("sample_size_1")

## To be copied in the server
# mod_sample_size_server("sample_size_1")