Is there a way to disable "ggvis-dropdown-toggle" [SVG download option]

[bedantaguru]

Thanks a lot for this nice package.
I was wondering whether it will be possible to disable the settings button [ggvis-dropdown-toggle or SVG download option button] through R.

I can do it while writing a shiny app like this
[example has been taken from here]
Trick is by adding this :

  tags$head(
    tags$style(HTML('a[class="ggvis-dropdown-toggle"]{display:none;}'))
  ),

Full code is

ui <- fluidPage(
  tags$head(
    tags$style(HTML('a[class="ggvis-dropdown-toggle"]{display:none;}'))
  ),
  sidebarLayout(
    sidebarPanel(
      sliderInput("n", "Number of points", min = 1, max = nrow(mtcars),
                  value = 10, step = 1),
      uiOutput("plot_ui")
    ),
    mainPanel(
      ggvisOutput("plot"),
      tableOutput("mtc_table")
    )
  ))


server <- function(input, output, session) {
  # A reactive subset of mtcars
  mtc <- reactive({ mtcars[1:input$n, ] })

  # A simple visualisation. In shiny apps, need to register observers
  # and tell shiny where to put the controls
  mtc %>%
    ggvis(~wt, ~mpg) %>%
    layer_points() %>%
    bind_shiny("plot", "plot_ui")

  output$mtc_table <- renderTable({
    mtc()[, c("wt", "mpg")]
  })
}


shinyApp(ui, server)

Kindly let me know.

[mienkoja]

This is a bit of a hack (and overwrites the css), but the following will get rid of the dropdown-toggle outside of shiny.

test <-
readLines("/Library/Frameworks/R.framework/Versions/3.3/Resources/library/ggvis/www/ggvis/css/ggvis.css")
test[grep('a.ggvis-dropdown-toggle', test) + 1] <- "  display: 'none';"
writeLines(test, "/Library/Frameworks/R.framework/Versions/3.3/Resources/library/ggvis/www/ggvis/css/ggvis.css")

@wch, off the top of my head, an additional option might be nice here such that set_options(dropdown_toggle = TRUE) would display the toggle and set_options(dropdown_toggle = FALSE) would hide it.