checkboxTreeInput: Convert a tree data.frame into a ul list
In jiho/checkboxTreeInput: A Tree-like Input with Checkboxes for Shiny Apps

Description Usage Arguments Value Examples

View source: R/checkboxTreeInput.R

Convert a tree data.frame into a ul list

1 2	checkboxTreeInput(inputId, label = NULL, tree, selected = NULL, opened = NULL)

`inputId`	The `input` slot that will be used to access the value.
`label`	Display label for the control, or `NULL` for no label.
`tree`	a `treedf` data.frame defining a tree, with columns `id` and `parent_id` at least.
`selected`	The nodes that should be initially selected, if any. All selected nodes (and their ancestors) will also be opened, to be visible.
`opened`	The nodes that should be initially opened, if any. All ancestor nodes will also be opened.

A list of HTML elements that can be added to a UI definition.

tree <- data.frame(id=1:3, parent_id=c(NA, 1, 2))
checkboxTreeInput("foo", tree=tree)
checkboxTreeInput("foo", tree=tree, selected=3)
if (interactive()) {
tree <- data.frame(id=1:6, parent_id=c(NA, 1, 2, 2, NA, 1))
ui <- fluidPage(
  checkboxTreeInput(inputId="tree", label="Tree selector",
    tree=tree, selected=c(1, 6), opened=1
  ),
  verbatimTextOutput("selected")
)
server <- function(input, output, session) {
  output$selected <- renderPrint( input$tree )
}
shinyApp(ui, server)
}