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82 lines
2.4 KiB
R
82 lines
2.4 KiB
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/update-input.R
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\name{updateActionButton}
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\alias{updateActionButton}
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\title{Change the label or icon of an action button on the client}
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\usage{
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updateActionButton(session, inputId, label = NULL, icon = NULL)
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}
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\arguments{
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\item{session}{The \code{session} object passed to function given to
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\code{shinyServer}.}
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\item{inputId}{The id of the input object.}
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\item{label}{The label to set for the input object.}
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\item{icon}{The icon to set for the input object. To remove the
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current icon, use \code{icon=character(0)}.}
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}
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\description{
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Change the label or icon of an action button on the client
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}
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\details{
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The input updater functions send a message to the client, telling it to
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change the settings of an input object. The messages are collected and sent
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after all the observers (including outputs) have finished running.
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The syntax of these functions is similar to the functions that created the
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inputs in the first place. For example, \code{\link{numericInput}()} and
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\code{updateNumericInput()} take a similar set of arguments.
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Any arguments with NULL values will be ignored; they will not result in any
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changes to the input object on the client.
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For \code{\link{radioButtons}()}, \code{\link{checkboxGroupInput}()} and
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\code{\link{selectInput}()}, the set of choices can be cleared by using
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\code{choices=character(0)}. Similarly, for these inputs, the selected item
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can be cleared by using \code{selected=character(0)}.
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}
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\examples{
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## Only run examples in interactive R sessions
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if (interactive()) {
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ui <- fluidPage(
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actionButton("update", "Update other buttons"),
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br(),
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actionButton("goButton", "Go"),
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br(),
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actionButton("goButton2", "Go 2", icon = icon("area-chart")),
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br(),
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actionButton("goButton3", "Go 3")
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)
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server <- function(input, output, session) {
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observe({
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req(input$update)
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# Updates goButton's label and icon
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updateActionButton(session, "goButton",
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label = "New label",
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icon = icon("calendar"))
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# Leaves goButton2's label unchaged and
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# removes its icon
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updateActionButton(session, "goButton2",
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icon = character(0))
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# Leaves goButton3's icon, if it exists,
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# unchaged and changes its label
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updateActionButton(session, "goButton3",
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label = "New label 3")
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})
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}
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shinyApp(ui, server)
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}
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}
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\seealso{
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\code{\link{actionButton}}
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}
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