Change the label or icon of an action button on the client
Change the label or icon of an action button on the client
updateActionButton( session = getDefaultReactiveDomain(), inputId, label = NULL, icon = NULL ) updateActionLink( session = getDefaultReactiveDomain(), inputId, label = NULL, icon = NULL )
session |
The |
inputId |
The id of the input object. |
label |
The label to set for the input object. |
icon |
An optional |
The input updater functions send a message to the client, telling it to change the settings of an input object. The messages are collected and sent after all the observers (including outputs) have finished running.
The syntax of these functions is similar to the functions that created the
inputs in the first place. For example, numericInput() and
updateNumericInput() take a similar set of arguments.
Any arguments with NULL values will be ignored; they will not result in any changes to the input object on the client.
For radioButtons(), checkboxGroupInput() and
selectInput(), the set of choices can be cleared by using
choices=character(0). Similarly, for these inputs, the selected item
can be cleared by using selected=character(0).
## Only run examples in interactive R sessions
if (interactive()) {
ui <- fluidPage(
actionButton("update", "Update other buttons and link"),
br(),
actionButton("goButton", "Go"),
br(),
actionButton("goButton2", "Go 2", icon = icon("area-chart")),
br(),
actionButton("goButton3", "Go 3"),
br(),
actionLink("goLink", "Go Link")
)
server <- function(input, output, session) {
observe({
req(input$update)
# Updates goButton's label and icon
updateActionButton(session, "goButton",
label = "New label",
icon = icon("calendar"))
# Leaves goButton2's label unchaged and
# removes its icon
updateActionButton(session, "goButton2",
icon = character(0))
# Leaves goButton3's icon, if it exists,
# unchaged and changes its label
updateActionButton(session, "goButton3",
label = "New label 3")
# Updates goLink's label and icon
updateActionButton(session, "goLink",
label = "New link label",
icon = icon("link"))
})
}
shinyApp(ui, server)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.