/
setup.R
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setup.R
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#' Set up inputs for storage
#'
#' Set up the application and inputs to track and retrieve stores
#'
#' @param appId your desired application id
#' @param inputs choose whether to track all inputs or specific input variables
#' @param outputs choose whether to track all outputs or specific output variables
#' @param session current session to track
#'
#' @note the inputs argument may be a \code{TRUE} or \code{FALSE} or a list of input ids. More examples are located at https://github.com/oobianom/aagarw30_shinyapps_to-shinyStorePlus
#' @return Embed within a page storage that allows input changes to be saved without slowing down the shiny application
#' @examples
#' \donttest{
#' library(shiny)
#' library(shinyStorePlus)
#'
#' # example 1 that tracks all inputs
#' if (interactive()) {
#' ui <- shiny::fluidPage(
#' titlePanel("EX1
#' shinyStorePlus All Inputs"),
#' initStore(),
#' sidebarLayout(
#' sidebarPanel(
#' sliderInput("nextgenshinyapps1",
#' "Number of bins:",
#' min = 1,
#' max = 200,
#' value = 150
#' ),
#' textInput(
#' "caption",
#' "simple caption:",
#' "try editing - r2resize pkg"
#' ),
#' numericInput("obs",
#' "sample observations:",
#' 10,
#' min = 1, max = 100
#' )
#' ),
#' mainPanel(
#' plotOutput("distPlot")
#' )
#' )
#' )
#' server <- function(input, output, session) {
#' output$distPlot <- renderPlot({
#' x <- faithful[, 2]
#' bins <- seq(min(x),
#' max(x),
#' length.out =
#' input$nextgenshinyapps1 + 1
#' )
#' hist(x,
#' breaks = bins,
#' col = "blue",
#' border = "gray"
#' )
#' })
#'
#' # insert at the bottom
#' appid <- "application01"
#' setupStorage(
#' appId = appid,
#' inputs = TRUE
#' )
#' }
#' shiny::shinyApp(ui = ui, server = server)
#' }
#'
#'
#' # example 2 that tracks only 2 inputs
#' if (interactive()) {
#' ui <- shiny::fluidPage(
#' # init stores
#' initStore(),
#' titlePanel("Ex2:
#' shinyStorePlus Some Inputs"),
#' sidebarLayout(
#' sidebarPanel(
#' sliderInput("nextgenshinyapps1",
#' "Number of bins:",
#' min = 1,
#' max = 200,
#' value = 150
#' ),
#' textInput(
#' "caption",
#' "simple caption:",
#' "summary, try editing"
#' ),
#' numericInput("obs",
#' "sample observations:",
#' 10,
#' min = 1, max = 100
#' )
#' ),
#' mainPanel(
#' plotOutput("distPlot")
#' )
#' )
#' )
#' server <- function(input, output, session) {
#' output$distPlot <- renderPlot({
#' x <- faithful[, 2]
#' bins <- seq(min(x),
#' max(x),
#' length.out =
#' input$nextgenshinyapps1 + 1
#' )
#' hist(x,
#' breaks = bins,
#' col = "blue",
#' border = "gray"
#' )
#' })
#'
#' # insert at the bottom !!!IMPORTANT
#' appid <- "application023"
#' setupStorage(
#' appId = appid,
#' inputs = list(
#' "nextgenshinyapps1",
#' "caption"
#' )
#' )
#' }
#' shiny::shinyApp(ui = ui, server = server)
#' }
#' }
#'
#' @export
#'
setupStorage <- function(appId, inputs = TRUE, outputs = FALSE, session = getDefaultReactiveDomain()) {
envir <- parent.frame()
input <- envir$input
output <- envir$output
# setup input stores
result <- (list(
appname = appId,
input = inputs,
output = outputs
))
session$sendCustomMessage(
"retriever",
result
)
# retrieve any previously stored
# collect previous data
shiny::observe({
if (!is.null(input$transmittedDatax0x)) {
var.list <- as.data.frame(jsonlite::fromJSON((input$transmittedDatax0x)))
var.list <- var.list[(var.list$value != "NULL"), ]
if (length(var.list)) {
if (nrow(var.list)) {
for (row in 1:nrow(var.list)) {
thisrow <- var.list[row, ]
if (grepl("bound-input", thisrow$type)) {
typeofinput <- strsplit(thisrow$type, "\\.")[[1]][1]
selrange <- unlist(thisrow$value)
switch(typeofinput,
"select" = {
shiny::updateSelectInput(session, inputId = thisrow$var, selected = selrange)
},
"checkboxgroup" = {
try(shinyWidgets::updateCheckboxGroupButtons(session, inputId = thisrow$var, selected = selrange),silent = TRUE)
try(shiny::updateCheckboxGroupInput(session, inputId = thisrow$var, selected = selrange),silent = TRUE)
},
"dateinput" = {
if (length(selrange) == 1) {
shiny::updateDateInput(session, inputId = thisrow$var, value = selrange)
} else {
shiny::updateDateRangeInput(session, start = selrange[1], end = selrange[2], inputId = thisrow$var)
}
},
"dateinputrange" = {
shiny::updateDateRangeInput(session, start = selrange[1], end = selrange[2], inputId = thisrow$var)
},
"checkbox" = {
try(shinyWidgets::updateSwitchInput(session, inputId = thisrow$var, value = as.logical(thisrow$value)), silent = TRUE)
try(shiny::updateCheckboxInput(session, inputId = thisrow$var, value = as.logical(thisrow$value)), silent = TRUE)
},
"radio" = {
try(shinyWidgets::updateRadioGroupButtons(session, inputId = thisrow$var, selected = thisrow$value), silent = TRUE)
try(shiny::updateRadioButtons(session, inputId = thisrow$var, selected = thisrow$value), silent = TRUE)
},
{
inputId = thisrow$var
message <- rmNULL(list(label=NULL, value=selrange, placeholder=NULL))
session$sendInputMessage(inputId, message)
}
)
}
# for outputs
if (grepl("bound-output", thisrow$type)) {
output[[thisrow$var]] <- shiny::renderText({
unlist(thisrow$value)
})
}
}
}
}
}
})
}