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Move through the history programmatically

Source: R/api.R
rewind_undo.Rd

The keyboard shortcuts and rewind_buttons() are sufficient for most applications. Use these functions to move through the history from your own controls.

Usage

rewind_undo(session = shiny::getDefaultReactiveDomain())

rewind_redo(session = shiny::getDefaultReactiveDomain())

rewind_jump(index, session = shiny::getDefaultReactiveDomain())

rewind_clear(session = shiny::getDefaultReactiveDomain())

Arguments

session

The Shiny session. The default is the current session.

index

The position to move to. The first position is 1. Position 1 holds the oldest entry that rewind keeps.

Value

TRUE if the position changed. If not, FALSE. The functions return the value invisibly.

Examples

if (interactive()) {
  library(shiny)

  server <- function(input, output, session) {
    rewind_enable()
    observeEvent(input$my_back_button, rewind_undo())
  }
}