Define Enroll/Collapse trigger

The function is useful if you want to override standard behavior for activating accordion item. By default accordion item is activated when its header is clicked.

In order to point the trigger to a different object (included in item's header or content) attach `onclick = accordionEnrollOnClick()` attribute to the element. Remember to set `enroll_callback = FALSE` to turn off standard activation behavior (click action on header).

If you want the item to be disabled (like button) when the item is enrolled please also add `class = activatorClass` to it.

accordionEnrollOnClick(prev = FALSE)

activatorClass

Format

An object of class character of length 1.

Arguments

prev

Should the current (FALSE) or previous (TRUE) item be enrolled? `prev = TRUE` can be useful if the last accordion item is removed and we want to enroll the preceding item.

Value

`html` class string that can be used for defining i.e. `onclick` attribute callback.

Character string - class name used for identifying accordion activator object.

Examples

if (interactive()) {
  library(shiny)
  activator <- function(disabled = FALSE) {
    tags$button(
      "Enroll", class = activatorClass, onclick = accordionEnrollOnClick(),
      disabled = if (isTRUE(disabled)) NA else NULL
    )
  }
  ui <- fluidPage(
    tags$head(tags$style(
      ".acc-header, .acc-content {border: 1px solid; border-radius: 5px;}"
    )),
    accordion(
      "acc",
      accordionItem(
        "first", div("Hello", activator(TRUE)), "There",
        enroll_callback = FALSE, active = TRUE
      ),
      accordionItem(
        "second", div("General", activator(FALSE)), "Kenobi",
        enroll_callback = FALSE
      )
    )
  )
  server <- function(input, output, session) {}

  shinyApp(ui, server)
}