R_shiny: Web Application Framework for R

Description Usage Arguments Details See Also Examples

Dynamically insert or remove a tabPanel (or a navbarMenu) from an existing tabsetPanel, navlistPanel or navbarPage.

insertTab(inputId, tab, target, position = c("before", "after"),
  select = FALSE, session = getDefaultReactiveDomain())

prependTab(inputId, tab, select = FALSE, menuName = NULL,
  session = getDefaultReactiveDomain())

appendTab(inputId, tab, select = FALSE, menuName = NULL,
  session = getDefaultReactiveDomain())

removeTab(inputId, target, session = getDefaultReactiveDomain())

`inputId`	The `id` of the `tabsetPanel` (or `navlistPanel` or `navbarPage`) into which `tab` will be inserted/removed.
`tab`	The item to be added (must be created with `tabPanel`, or with `navbarMenu`).
`target`	If inserting: the `value` of an existing `tabPanel`, next to which `tab` will be added. If removing: the `value` of the `tabPanel` that you want to remove. See Details if you want to insert next to/remove an entire `navbarMenu` instead.
`position`	Should `tab` be added before or after the `target` tab?
`select`	Should `tab` be selected upon being inserted?
`session`	The shiny session within which to call this function.
`menuName`	This argument should only be used when you want to prepend (or append) `tab` to the beginning (or end) of an existing `navbarMenu` (which must itself be part of an existing `navbarPage`). In this case, this argument should be the `menuName` that you gave your `navbarMenu` when you first created it (by default, this is equal to the value of the `title` argument). Note that you still need to set the `inputId` argument to whatever the `id` of the parent `navbarPage` is. If `menuName` is left as `NULL`, `tab` will be prepended (or appended) to whatever `inputId` is.

When you want to insert a new tab before or after an existing tab, you should use insertTab. When you want to prepend a tab (i.e. add a tab to the beginning of the tabsetPanel), use prependTab. When you want to append a tab (i.e. add a tab to the end of the tabsetPanel), use appendTab.

For navbarPage, you can insert/remove conventional tabPanels (whether at the top level or nested inside a navbarMenu), as well as an entire navbarMenu. For the latter case, target should be the menuName that you gave your navbarMenu when you first created it (by default, this is equal to the value of the title argument).

showTab

## Only run this example in interactive R sessions
if (interactive()) {

# example app for inserting/removing a tab
ui <- fluidPage(
  sidebarLayout(
    sidebarPanel(
      actionButton("add", "Add 'Dynamic' tab"),
      actionButton("remove", "Remove 'Foo' tab")
    ),
    mainPanel(
      tabsetPanel(id = "tabs",
        tabPanel("Hello", "This is the hello tab"),
        tabPanel("Foo", "This is the foo tab"),
        tabPanel("Bar", "This is the bar tab")
      )
    )
  )
)
server <- function(input, output, session) {
  observeEvent(input$add, {
    insertTab(inputId = "tabs",
      tabPanel("Dynamic", "This a dynamically-added tab"),
      target = "Bar"
    )
  })
  observeEvent(input$remove, {
    removeTab(inputId = "tabs", target = "Foo")
  })
}

shinyApp(ui, server)


# example app for prepending/appending a navbarMenu
ui <- navbarPage("Navbar page", id = "tabs",
  tabPanel("Home",
    actionButton("prepend", "Prepend a navbarMenu"),
    actionButton("append", "Append a navbarMenu")
  )
)
server <- function(input, output, session) {
  observeEvent(input$prepend, {
    id <- paste0("Dropdown", input$prepend, "p")
    prependTab(inputId = "tabs",
      navbarMenu(id,
        tabPanel("Drop1", paste("Drop1 page from", id)),
        tabPanel("Drop2", paste("Drop2 page from", id)),
        "------",
        "Header",
        tabPanel("Drop3", paste("Drop3 page from", id))
      )
    )
  })
  observeEvent(input$append, {
    id <- paste0("Dropdown", input$append, "a")
    appendTab(inputId = "tabs",
      navbarMenu(id,
        tabPanel("Drop1", paste("Drop1 page from", id)),
        tabPanel("Drop2", paste("Drop2 page from", id)),
        "------",
        "Header",
        tabPanel("Drop3", paste("Drop3 page from", id))
      )
    )
  })
}

shinyApp(ui, server)

}