Make module of reactlog for a given app

[schloerke]

Allow for users to add UI and server code to shiny application. Hopefully can be done in a module.

I am not sold if a complete refresh is the best approach... would be nice to just update the rlog information.

library(reactlog)
library(shiny)

options(shiny.reactlog = TRUE)

# Define UI for app that draws a histogram ----
ui <- fluidPage(

  # App title ----
  titlePanel("Hello Shiny!"),

  # Sidebar layout with input and output definitions ----
  sidebarLayout(

    # Sidebar panel for inputs ----
    sidebarPanel(

      # Input: Slider for the number of bins ----
      sliderInput(inputId = "bins",
                  label = "Number of bins:",
                  min = 1,
                  max = 50,
                  value = 30)

    ),

    # Main panel for displaying outputs ----
    mainPanel(

      # Output: Histogram ----
      plotOutput(outputId = "distPlot"),

    )
  ),
### start
  actionButton("refreshReactlog", "Refresh Reactlog", style=""),
  uiOutput("reactlogframe")
### end

)

# Define server logic required to draw a histogram ----
server <- function(input, output, session) {

  # Histogram of the Old Faithful Geyser Data ----
  # with requested number of bins
  # This expression that generates a histogram is wrapped in a call
  # to renderPlot to indicate that:
  #
  # 1. It is "reactive" and therefore should be automatically
  #    re-executed when inputs (input$bins) change
  # 2. Its output type is a plot
  output$distPlot <- renderPlot({

    x    <- faithful$waiting
    bins <- seq(min(x), max(x), length.out = input$bins + 1)

    hist(x, breaks = bins, col = "#75AADB", border = "white",
         xlab = "Waiting time to next eruption (in mins)",
         main = "Histogram of waiting times")

    })

### start
  output$reactlogframe <- renderUI({
    # trigger refresh
    input$refreshReactlog

    htmltools::tagList(
      htmltools::tags$iframe(id = "reactlog_iframe",width = "100%", height = 600),
      htmltools::tags$script(HTML("
        (function() {
          var src = 'reactlog?w=' + window.escape(window.Shiny.shinyapp.config.workerId) + '&s=' + window.escape(window.Shiny.shinyapp.config.sessionId);
          console.log('src:', src);
          $('#reactlog_iframe').attr('src', src);
        })()
      "))

    )
  })
### end

}

# Create Shiny app ----
shinyApp(ui = ui, server = server)

[schloerke]

[schloerke]

Fixed in #66