Auto-closing dropdown menus in the navbar of a Shiny app with Bootstrap

Is there a way to customize the behavior of a shiny navbarMenu so that when I click inside or outside it, the dropdown does not automatically hide? I have seen mentions of using data-bs-auto-close="false" in the Bootstrap documentation, has anyone tried implementing this in a shiny app?

In HTML, the code would look something like this:

`

<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuClickable" data-bs-     toggle="dropdown" data-bs-auto-close="false" aria-expanded="false">
    Manual close
  </button>
  <ul class="dropdown-menu" aria-labelledby="dropdownMenuClickable">
    <li><a class="dropdown-item" href="#">Menu item</a></li>
    <li><a class="dropdown-item" href="#">Menu item</a></li>
    <li><a class="dropdown-item" href="#">Menu item</a></li>
  </ul>
</div>`
htmlcssrshinybootstrap-5

Answer №1

Utilizing custom bootstrap classes in Shiny can sometimes be challenging within the generic UI functions. However, you have the flexibility to construct the entire UI using HTML tags, as demonstrated below.

In the example below, I specified bootstrapPage and 

theme = bslib::bs_theme(version = 5)
to indicate that Bootstrap 5 should be used in this instance. I also showcased how to incorporate custom bootstrap classes by utilizing named arguments, such as 
"data-bs-auto-close" = "false"
.

Here is a recreated version of the provided HTML code written in R:

library(shiny)

ui <- bootstrapPage(
    theme = bslib::bs_theme(version = 5),
    
    # Navbar
    tags$nav(
        class = "navbar navbar-light bg-light",
        
        tags$div(
            class = "container-fluid",
            
            tags$button(
                class = "btn btn-secondary dropdown-toggle",
                type = "button",
                id = "dropdownMenuClickable",
                "data-bs-toggle" = "dropdown",
                "data-bs-auto-close" = "false",
                "Manual Close"
            ),
            
            
            tags$ul(
                class = "dropdown-menu",
                
                tags$li(
                    tags$a(
                        class = "dropdown-item",
                        "Menu Item"
                    ),
                    tags$a(
                        class = "dropdown-item",
                        "Menu Item"
                    ),
                    tags$a(
                        class = "dropdown-item",
                        "Menu Item"
                    )
                )
            )
        )
    )
)

server <- function(input, output, session) {
  
}

shinyApp(ui, server)

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