Example for expand/collapse is broken

[razz-matazz]

Hello,

In the docs there is an example for expand/collapse.
I justed wanted to let you know that the actionButton "expandWAfrica" cannot work, because nodes_input = TRUE isn't set in treeviewInput.

Further I do not know if it is the intented behaviour that then the countrys of level 3 are then displayed directly under level 1. I would assume level 2 (e.g. western africa) is still displayed (but now expanded).

[pvictor]

Thanks for reporting, I've updated the example.
Indeed, I'm agree, I've updated the behavior to expand parent node as well.

Victor

[WurmPeter]

Hm, I think this caused a new bug.
When levels = 1, setting selected in treeviewInput shows now the selected third-level item directly under its first-level item, skipping the second-level...

Here's an example:

library(shinytreeview)

dat_fr <- data.frame(
  first_level_id = c("f1", "f2", "f1", "f3", "f2"),
  second_level_id = c("b1", "b2", "b3", "b3", "b4"),
  third_level_id = c("1", "2", "3", "4", "5"),
  first_level = c(
    "A",
    "B",
    "A",
    "C",
    "B"
  ),
  second_level = c(
    "A-1",
    "B-1",
    "A-2",
    "C-1",
    "B-2"
  ),
  third_level = c(
    "item 1",
    "item 2",
    "item 3",
    "item 4",
    "item 5"
  ),
  stringsAsFactors = FALSE
)

ui <- fluidPage( 
  fluidRow(
    column(
      width = 4, 
      uiOutput("tree")
    ),
    column(
      width = 8, 
      tags$b("Selected:"),
      verbatimTextOutput(outputId = "result")
    )
  )
)

server <- function(input, output, session) {
  
  output$result <- renderPrint({
    input$selected_item
  })
  
  output$tree <- renderUI({
    tagList(
      shinytreeview::treeviewInput(
        inputId = "selected_item",
        levels = 1,
        borders = FALSE,
        selected = "2",
        return_value = "id",
        choices = shinytreeview::make_tree( 
          dat_fr, 
          levels = c("first_level", "second_level", "third_level"),
          levels_id = c("first_level_id", "second_level_id", "third_level_id") 
        ),
        width = "100%"
      )
    )
  })
  
}

if (interactive())
  shinyApp(ui, server)