updateDropInput: Change the value of a drop input on the client

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Change the value of a drop input on the client

Description

Change the value of a drop input on the client

Usage

updateDropInput(session, inputId, selected = NULL, disabled = NULL)

Arguments

session	The session object passed to function given to shinyServer.
inputId	The id of the input object.
selected	The initially selected value.
disabled	Choices (choicesValues) to disable.

See Also

dropInput

Examples

if (interactive()) {

  library(shiny)
  library(esquisse)

  myChoices <- tagList(
    list(icon("home"), style = "width: 100px;"),
    list(icon("flash"), style = "width: 100px;"),
    list(icon("cogs"), style = "width: 100px;"),
    list(icon("fire"), style = "width: 100px;"),
    list(icon("users"), style = "width: 100px;"),
    list(icon("info"), style = "width: 100px;")
  )


  ui <- fluidPage(
    tags$h2("Update Drop Input"),
    fluidRow(
      column(
        width = 6,
        dropInput(
          inputId = "mydrop",
          choicesNames = myChoices,
          choicesValues = c("home", "flash", "cogs", "fire", "users", "info"),
          dropWidth = "220px"
        ),
        verbatimTextOutput(outputId = "res")
      ),
      column(
        width = 6,
        actionButton("home", "Select home"),
        actionButton("flash", "Select flash"),
        actionButton("cogs", "Select cogs"),
        actionButton("fire", "Select fire"),
        actionButton("users", "Select users"),
        actionButton("info", "Select info"),
        checkboxGroupInput(
          inputId = "disabled",
          label = "Choices to disable",
          choices = c("home", "flash", "cogs", "fire", "users", "info")
        ),
        actionButton("disable", "Disable")
      )
    )
  )

  server <- function(input, output, session) {

    output$res <- renderPrint({
      input$mydrop
    })

    observeEvent(input$home, {
      updateDropInput(session, "mydrop", "home")
    })
    observeEvent(input$flash, {
      updateDropInput(session, "mydrop", "flash")
    })
    observeEvent(input$cogs, {
      updateDropInput(session, "mydrop", "cogs")
    })
    observeEvent(input$fire, {
      updateDropInput(session, "mydrop", "fire")
    })
    observeEvent(input$users, {
      updateDropInput(session, "mydrop", "users")
    })
    observeEvent(input$info, {
      updateDropInput(session, "mydrop", "info")
    })

    observeEvent(input$disable, {
      if (!is.null(input$disabled)) {
        updateDropInput(session, "mydrop", disabled = input$disabled)
      } else {
        updateDropInput(session, "mydrop", disabled = character(0))
      }
    })
  }

  shinyApp(ui, server)

}

esquisse documentation built on Sept. 18, 2024, 5:09 p.m.