Add function call to close boxPlus

[happyshows]

Use case:
use modules together with the boxPlus, each box represents certain data element and there's an action button to delete the element (box) in database. Will need a programatic interface to close the box once the data element is deleted.

[samuelhuerga]

It would be amazing too to provide some server logic to close button, just to do the opposite: once user has clicked close button on a boxPlus, perform an action on the server side.

Thanks!

[DivadNojnarg]

@samuelhuerga: Hi! Can you provide an example please? What kind to action do you want to see?

[kiesner]

@samuelhuerga @DivadNojnarg
Hi, I face the same issue -- I want to execute server side code when the box is closed.

Example:
I want to dynamically add boxes to the UI by pressing a button, but allow at most 10 boxes to be created. I store those boxes in a list, and when the close button is pressed, i need a handler that allows me to remove the box from the list again.

pacman::p_load(shiny, shinydashboard, shinydashboardPlus)

ui <- dashboardPage(
  header = dashboardHeaderPlus(
    title = "Minimal Example",
    left_menu =
      tagList(actionButton(
        inputId = "actionBtnBoxCreation",
        label = "create box"
      ))
  ),
  sidebar = dashboardSidebar(disable = TRUE),
  body = dashboardBody(
    fluidRow(uiOutput("boxes"))
  )
)

server <- function(input, output, session) {
  renderBox <- function(runIndex) {
    boxPlus(title = paste("Box", runIndex))
  }

  boxes <- reactiveValues(values = list())

  observeEvent(input$actionBtnBoxCreation, {
      if (length(boxes$values) >= 10) {
        print("Not more than 10 boxes allowed!")
        return()
      }
      boxes$values <- lapply(seq(length(boxes$values) + 1), renderBox)
  }, ignoreInit = TRUE)

  output$boxes <- renderUI({
    boxes$values
  })

  # observe(<event that fires when box is closed>, {
  #   <remove box from boxes$values>
  # })
}

shinyApp(ui = ui, server = server)

Is this possible?

[DivadNojnarg]

WIP in v 0.8.0.9000 (github):

For now the box can only be programmatically collapsed but the remove action is also possible (not yet available)

library(shiny)
 library(shinydashboard)
 library(shinydashboardPlus)
 
 ui <- dashboardPagePlus(
   dashboardHeaderPlus(),
   dashboardSidebar(),
   dashboardBody(
     tags$style("body { background-color: ghostwhite};"),
     
     br(),
     boxPlus(
       title = textOutput("box_state"),
       "Box body",
       inputId = "mybox",
       collapsible = TRUE,
       plotOutput("plot")
     ),
     actionButton("toggle_box", "Toggle Box", class = "bg-success")
   )
 )
 
 server <- function(input, output, session) {
   output$plot <- renderPlot({
     req(!input$mybox$collapsed)
     plot(rnorm(200))
   })
   
   output$box_state <- renderText({
     state <- if (input$mybox$collapsed) "collapsed" else "uncollapsed"
     paste("My box is", state)
   })
   
   observeEvent(input$toggle_box, {
     updateBoxPlus("mybox")
   })
   
 }
 
 shinyApp(ui, server)