Build Reactive Server State for ggpaintr — ptr_server

Create the shared reactive state used by the extensible ptr_* server helpers. This object can be passed to the bind helpers or inspected directly inside a larger Shiny app.

Usage

ptr_server_state(
  formula,
  envir = parent.frame(),
  ui_text = NULL,
  ids = ptr_build_ids(),
  placeholders = NULL,
  expr_check = TRUE
)

Arguments

formula: A single formula string using ggpaintr placeholders.
envir: Environment used to resolve local data objects when building the app.
ui_text: Optional named list of copy overrides for UI labels, helper text, and placeholders.
ids: A ptr_build_ids object describing the top-level Shiny ids used by the integration helpers.
placeholders: Optional custom placeholder definitions or an existing placeholder registry.
expr_check: Controls expr placeholder validation. TRUE (default) applies the built-in denylist of dangerous functions. FALSE disables all checking. A named list with deny_list and/or allow_list character vectors supplies a custom check; when both are given, denied entries are removed from the allowlist.

Value

An object of class ptr_state.

Examples

state <- ptr_server_state(
  "ggplot(data = mtcars, aes(x = var, y = var)) + geom_point()"
)
is.function(state$runtime)
#> [1] TRUE