Create a multi-line text area widget

Usage

text_area(
  value = "",
  language = NULL,
  show_line_numbers = FALSE,
  id = NULL,
  classes = NULL
)

Arguments

value: Initial text content.
language: Optional language for syntax highlighting (e.g. "r", "python", "json", "markdown", "sql").
show_line_numbers: Show line numbers.
id: Optional widget id.
classes: Optional CSS classes (character vector).

Value

An rtui_spec list.

Examples

if (FALSE) { # \dontrun{
# Code editor with syntax highlighting
quick_app(
  layout = vstack(
    text_area(value = "x <- 1:10\nmean(x)\nsd(x)",
              language = "r",
              show_line_numbers = TRUE,
              id = "editor"),
    button("Run", id = "run"),
    id = "root"
  ),
  on_change = list(
    editor = function(event, state) {
      state$set("code", event$value)
      state
    }
  )
)

# Markdown editor with live preview
quick_app(
  layout = hstack(
    text_area(value = "# Title\n\nSome **bold** text.",
              id = "editor", show_line_numbers = TRUE),
    markdown("", id = "preview"),
    id = "root"
  ),
  on_change = list(
    editor = function(event, state) {
      update(state$app, "preview", content = event$value)
      state
    }
  )
)
} # }