## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  eval = FALSE
)
library(shinyGovstyle)

## -----------------------------------------------------------------------------
# library(shiny)
# library(shinyGovstyle)
# 
# ui <- gov_page(
#   shinyjs::useShinyjs(),
#   shinyGovstyle::header(
#     org_name = "Example",
#     service_name = "User Examples"
#   ),
#   shinyGovstyle::cookieBanner("User Examples"),
#   shinyGovstyle::gov_main_layout(),
#   shinyGovstyle::footer(full = TRUE)
# )
# 
# server <- function(input, output, session) {
#   # Show the relevant confirmation message and hide the main banner
#   observeEvent(input$cookieAccept, {
#     shinyjs::show(id = "cookieAcceptDiv")
#     shinyjs::hide(id = "cookieMain")
#   })
# 
#   observeEvent(input$cookieReject, {
#     shinyjs::show(id = "cookieRejectDiv")
#     shinyjs::hide(id = "cookieMain")
#   })
# 
#   # Hide the whole banner once the user has read the confirmation
#   observeEvent(input$hideAccept, shinyjs::toggle(id = "cookieDiv"))
#   observeEvent(input$hideReject, shinyjs::toggle(id = "cookieDiv"))
# 
#   # input$cookieLink takes users to a dedicated cookies page. Here the page is
#   # a hidden tabsetPanel, so we switch to it with shiny::updateTabsetPanel().
#   observeEvent(input$cookieLink, {
#     updateTabsetPanel(session, "tab-container", selected = "panel-cookies")
#   })
# }
# 
# if (interactive()) shinyApp(ui, server)

## -----------------------------------------------------------------------------
# mod_cookies_ui <- function(id) {
#   shiny::tagList(
#     shinyGovstyle::heading_text("Cookies", size = "l", level = 1),
#     shinyGovstyle::gov_text(
#       "We use analytics cookies to measure how the service is used so we",
#       "can improve it."
#     ),
#     shiny::uiOutput(shiny::NS(id, "cookie_saved")),
#     shinyGovstyle::radio_button_Input(
#       inputId = shiny::NS(id, "cookies_analytics"),
#       label = "Do you want to accept analytics cookies?",
#       choices = c("Yes" = "yes", "No" = "no"),
#       selected = "no",
#       inline = TRUE
#     ),
#     shinyGovstyle::button_Input(
#       shiny::NS(id, "save_cookies"),
#       "Save cookie settings"
#     )
#   )
# }

## -----------------------------------------------------------------------------
# mod_cookies_server <- function(id, cookie_accept, cookie_reject, active_tab) {
#   shiny::moduleServer(id, function(input, output, session) {
#     # Banner choices drive the settings radio without the user touching it.
#     # ignoreInit = TRUE stops these firing on startup.
#     shiny::observeEvent(
#       cookie_accept(),
#       shinyGovstyle::update_radio_button_Input(
#         session,
#         inputId = "cookies_analytics",
#         selected = "yes"
#       ),
#       ignoreInit = TRUE
#     )
# 
#     shiny::observeEvent(
#       cookie_reject(),
#       shinyGovstyle::update_radio_button_Input(
#         session,
#         inputId = "cookies_analytics",
#         selected = "no"
#       ),
#       ignoreInit = TRUE
#     )
# 
#     # Saving shows a success banner reflecting the live radio value.
#     saved_choice <- shiny::reactiveVal(NULL)
# 
#     shiny::observeEvent(input$save_cookies, {
#       saved_choice(
#         if (identical(input$cookies_analytics, "yes")) "accept" else "reject"
#       )
#     })
# 
#     # Clear the success banner when the user leaves the cookies tab, so a
#     # stale message isn't waiting for them when they come back.
#     shiny::observeEvent(
#       active_tab(),
#       {
#         if (!identical(active_tab(), "panel-cookies")) {
#           saved_choice(NULL)
#         }
#       },
#       ignoreInit = TRUE
#     )
# 
#     output$cookie_saved <- shiny::renderUI({
#       choice <- saved_choice()
#       if (is.null(choice)) {
#         return(NULL)
#       }
#       shinyGovstyle::noti_banner(
#         session$ns("saved_banner"),
#         title_txt = "Success",
#         body_txt = paste0(
#           "You've updated your cookie preferences. You chose to ",
#           choice,
#           " analytics cookies."
#         ),
#         type = "success"
#       )
#     })
#   })
# }

## -----------------------------------------------------------------------------
# server <- function(input, output, session) {
#   mod_cookies_server(
#     "cookies",
#     cookie_accept = shiny::reactive(input$cookieAccept),
#     cookie_reject = shiny::reactive(input$cookieReject),
#     active_tab = shiny::reactive(input[["tab-container"]])
#   )
# 
#   # Banner show/hide handlers (as in the banner example above)
#   observeEvent(input$cookieAccept, {
#     shinyjs::show(id = "cookieAcceptDiv")
#     shinyjs::hide(id = "cookieMain")
#   })
#   observeEvent(input$cookieReject, {
#     shinyjs::show(id = "cookieRejectDiv")
#     shinyjs::hide(id = "cookieMain")
#   })
#   observeEvent(input$hideAccept, shinyjs::toggle(id = "cookieDiv"))
#   observeEvent(input$hideReject, shinyjs::toggle(id = "cookieDiv"))
# 
#   # The "View cookies" link in the banner opens the cookies tab
#   observeEvent(input$cookieLink, {
#     updateTabsetPanel(session, "tab-container", selected = "panel-cookies")
#   })
# }