R/shiny.R

In rstudio/r2d3: Interface to 'D3' Visualizations

#' Shiny bindings for d3
#'
#' Output and render functions for using d3 within Shiny
#' applications and interactive Rmd documents.
#'
#' @param outputId output variable to read from
#' @param width,height Must be a valid CSS unit (like \code{'100\%'},
#'   \code{'400px'}, \code{'auto'}) or a number, which will be coerced to a
#'   string and have \code{'px'} appended.
#' @param expr An expression that generates a d3
#' @param env The environment in which to evaluate \code{expr}.
#' @param quoted Is \code{expr} a quoted expression (with \code{quote()})? This
#'   is useful if you want to save an expression in a variable.
#'
#' @name d3-shiny
#'
#' @export
d3Output <- function(outputId, width = '100%', height = '400px')
{
  htmlwidgets::shinyWidgetOutput(outputId, 'r2d3', width, height)
}

#' @rdname d3-shiny
#' @export
renderD3 <- function(expr, env = parent.frame(), quoted = FALSE)
{
  if (!quoted) { expr <- substitute(expr) } # force quoted
  htmlwidgets::shinyRenderWidget(expr, d3Output, env, quoted = TRUE)
}