R htmlwidget for Sortable.js
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DESCRIPTION
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sortableR.Rproj

Readme.md

Sortable.js is so ridiculously amazing that of course we need it in R as an htmlwidget. sortableR attempts to harness some of the power of Sortable.js.

note: this is experimental and underdevelopment, but it does work. Try it out. I don't think it will hurt anything. sortableR is not on CRAN, but should install easily with devtools::install_github.

# devtools::install_github("timelyportfolio/sortableR")

Good Widgets Just Work

I think sortableR works best with htmltools::tags.

library(sortableR)
library(htmltools)

html_print(tagList(
  tags$ul(id = "uniqueId01"
    ,tags$li("can you move me?")
    ,tags$li("sure, touch me.")
    ,tags$li("do you know my powers?")
  )
  ,sortableR("uniqueId01") # use the id as the selector
))

Good Widgets Work with other Widgets

When htmlwidgets play well together, I am very happy.

library(DiagrammeR)
library(htmltools)
library(sortableR)

html_print(tagList(
  tags$div(id="aUniqueId"
    ,tags$div(style = "border: solid 0.2em gray; float:left;"
      ,mermaid("graph LR; S[Sortable.js] -->|sortableR| R ",height=200,width = 200)
    )
    ,tags$div(style = "border: solid 0.2em gray; float:left;"
      ,mermaid("graph TD; js -->|htmlwidgets| R ",height=200,width = 200)
    )
  )
  ,sortableR("aUniqueId")
))

Good Widgets Work in Shiny

It only works as an output right now, but of course I want it to be an input (I'll try) also. Let's see it as an output.

library(shiny)
library(sortableR)

ui = shinyUI(fluidPage(
  fluidRow(
    column( width = 4
      ,tags$h4("sortableR in Shiny + Bootstrap")
      ,tags$div(id="veryUniqueId", class="list-group"
        ,tags$div(class="list-group-item","bootstrap 1")
        ,tags$div(class="list-group-item","bootstrap 2")
        ,tags$div(class="list-group-item","bootstrap 3")
      )
    )
  )
  ,sortableR( "veryUniqueId")
))

server = function(input,output){
  
}

shinyApp(ui=ui,server=server)

Now, let's see if we can get an idea what it might look like as an input or integral piece of Shiny.

library(shiny)
library(sortableR)

ui = shinyUI(fluidPage(
  fluidRow(
    column( width = 4
      ,tags$h4("sortableR in Shiny + Bootstrap")
      ,tags$div(id="veryUniqueId", class="list-group"
        ,tags$div(class="list-group-item","bootstrap 1")
        ,tags$div(class="list-group-item","bootstrap 2")
        ,tags$div(class="list-group-item","bootstrap 3")
      )
    )
  )
  ,verbatimTextOutput("results")
  ,sortableR(
    "veryUniqueId"
    ,options = list(onSort = htmlwidgets::JS('
      function(evt){
        debugger
        Shiny.onInputChange("mySort", this.el.textContent)
      }      
    '))
  )
))

server = function(input,output){
  output$results <- renderPrint({input$mySort})
}

shinyApp(ui=ui,server=server)

Or, check out these reorderable tabs by runGist("2dbe45f77b65e28acab9"). All we had to do was add an id and add one line of code to the Tabset example from RStudio.