---
title: "CSS preloaders"
author: "David Granjon"
date: "`r Sys.Date()`"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{CSS preloaders}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r setup, include = FALSE}
library(bslib)
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
```

## How to set up a preloader?

Pass the argument `preloader` to the `dashboardPage()` function. It expects a list containing all parameters necessary to `waiter::waiterShowOnLoad`. The duration is automatically handled by listening to the `shiny:idle` [event](https://shiny.rstudio.com/articles/js-events.html). Please have a look to the 
`{waiter}` [documentation](https://waiter.john-coene.com/) for more details.

That's all!

```{r waiter-code, eval=TRUE, echo=FALSE}
card(
  bs4Dash:::create_link_iframe(bs4Dash:::shinylive_links["inst/examples/vignettes-demos/preloader"]),
  full_screen = TRUE,
  style = "margin: 0 auto; float: none;"
)
```