inst/ProstarApp/mod_loading_page.R

In samWieczorek/Prostar.2.0: Provides a GUI for DAPAR

# Module UI

#' @title   mod_loading_page_ui and mod_loading_page_server
#' @description  A shiny Module.
#'
#' @param id shiny id
#' @param input internal
#' @param output internal
#' @param session internal
#'
#' @rdname mod_loading_page
#'
#' @keywords internal
#' @export 
#' @importFrom shiny NS tagList
#' @importFrom shinyjs inlineCSS
mod_loading_page_ui <- function(id){
  ns <- NS(id)
  tagList(
    shinyjs::inlineCSS(progressBar_css),
    absolutePanel(
      id  = ns("AbsolutePanel"),
      class = "panel panel-default",
      style= "text-align: center; background-color: #25949A;",
      top = '30%',
      left = '25%',
      width = "50%",
      height = "150px",
      draggable = FALSE,
      fixed = TRUE,
      tagList(
        tags$h1(style='text-align: center; color: white', "Prostar is loading, please wait..."),
        br(),
        tags$div(class="progress",
          tags$div(class="indeterminate")
        )
      )
    )
  )
}

# Module Server

#' @rdname mod_loading_page
#' @export
#' @keywords internal

mod_loading_page_server <- function(id){
  
  moduleServer(id, function(input, output, session){
    ns <- session$ns
  })
  
}

## To be copied in the UI
# mod_loading_page_ui("loading_page_ui_1")

## To be copied in the server
# callModule(mod_loading_page_server, "loading_page_ui_1")



progressBar_css <- ".progress {
  position: relative;
  height: 4px;
  display: block;
  width: 100%;
  background-color: #E87352;
  border-radius: 2px;
  background-clip: padding-box;
  margin: 0.5rem 0 1rem 0;
  overflow: hidden; }
  
  
.progress .determinate {
    position: absolute;
    background-color: inherit;
    top: 0;
    bottom: 0;
    background-color: #E87352;
    transition: width .3s linear; }
    
.progress .indeterminate {
    background-color: blue; }
    .progress .indeterminate:before {
      content: '';
      position: absolute;
      background-color: #ffffff;
      top: 0;
      left: 0;
      bottom: 0;
      will-change: left, right;
      -webkit-animation: indeterminate 2.1s cubic-bezier(0.65, 0.815, 0.735, 0.395) infinite;
              animation: indeterminate 2.1s cubic-bezier(0.65, 0.815, 0.735, 0.395) infinite; }
    
.progress .indeterminate:after {
      content: '';
      position: absolute;
      background-color: #ffffff;
      top: 0;
      left: 0;
      bottom: 0;
      will-change: left, right;
      -webkit-animation: indeterminate-short 2.1s cubic-bezier(0.165, 0.84, 0.44, 1) infinite;
              animation: indeterminate-short 2.1s cubic-bezier(0.165, 0.84, 0.44, 1) infinite;
      -webkit-animation-delay: 1.15s;
              animation-delay: 1.15s; }

@-webkit-keyframes indeterminate {
  0% {
    left: -35%;
    right: 100%; }
  60% {
    left: 100%;
    right: -90%; }
  100% {
    left: 100%;
    right: -90%; } }
@keyframes indeterminate {
  0% {
    left: -35%;
    right: 100%; }
  60% {
    left: 100%;
    right: -90%; }
  100% {
    left: 100%;
    right: -90%; } }
@-webkit-keyframes indeterminate-short {
  0% {
    left: -200%;
    right: 100%; }
  60% {
    left: 107%;
    right: -8%; }
  100% {
    left: 107%;
    right: -8%; } }
@keyframes indeterminate-short {
  0% {
    left: -200%;
    right: 100%; }
  60% {
    left: 107%;
    right: -8%; }
  100% {
    left: 107%;
    right: -8%; } }"


## To be copied in the UI
# mod_loading_page_ui("loading_page_ui_1")

## To be copied in the server
# callModule(mod_loading_page_server, "loading_page_ui_1")