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Yeah, sure thing, that's possible. The title of a navbarPage/etc can be an actionLink that sends the user to a certain tab with updateNavbarPage. Same with a tabsetPanel with updateTabsetPanel.
Here's an example:
library(shiny)
ui <- fluidPage(
navbarPage(
id = "my-page",
title = actionLink("title", "My Application"),
tabPanel(
"Home",
"This is the home page."
),
tabPanel(
"Help",
"This is the help page."
)
)
)
server <- function(input, output, session) {
observeEvent(input$title, {
updateNavbarPage(session, "my-page", "Home")
})
}
shinyApp(ui, server)
Example taken with minor modifications from this StackOverflow answer.