Use processanimateR selection as Shiny inputs

Felix Mannhardt

2022-07-20

Selections made in the processanimateR animation be used as input by Shiny applications. Here a simple example in which a Shiny module is created that renders the case identifiers of selected tokens and the identifiers and names of selected activities:

library(shiny)
library(processanimateR)
library(eventdataR)
library(jsonlite)

shinyAnimation <- function(eventlog, min.time = 30, max.time = 600, default.time = 60) {

  # Define Shiny Module
  animationUI <- function(id, title) {
    ns <- NS(id)
    tagList(
      h2(title),
      processanimaterOutput(ns("process")),
      h4("Selected cases"),
      textOutput(ns("token_selection")),
      h4("Selected activities"),
      textOutput(ns("activity_selection")),
      h4("Current time"),
      textOutput(ns("activity_time"))
    )
  }

  animation <- function(input, output, session, ...) {

    output$token_selection <- renderText({
      if (is.null(input$process_tokens)) {
        "None"
      } else {
        paste0(input$process_tokens, collapse = ",")
      }
    })

    output$activity_selection <- renderText({
      if (is.null(input$process_activities)) {
        "None"
      } else {
        activities <- jsonlite::fromJSON(input$process_activities)
        paste0("(", activities$id, ",", activities$activity, ")", collapse = ",")
      }
    })
    
    output$activity_time <- renderText({
      if (is.null(input$process_time)) {
        "0"
      } else {
        input$process_time
      }
    })    

    output$process <- renderProcessanimater(expr = {
      animate_process(eventlog, ...)
    })

  }

  ui <- fluidPage(
    animationUI("module1", "Relative"),
    animationUI("module2", "Absolute")
  )

  # Two animations
  server <- function(input, output, session) {
    callModule(animation, "module1", mode = "relative")
    callModule(animation, "module2")
  }

  shinyApp(ui, server, options = list(height = 500))

}

shinyAnimation(patients)