Dynamically insert/remove a tabPanel — insertTab

v1.8.0|Source: R/insert-tab.R

Description

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

insertTab(
  inputId,
  tab,
  target = NULL,
  position = c("after", "before"),
  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())

Arguments

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.

Details

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).

See also

showTab()

Examples

## 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)

}