dr_catalog_pane()

The viewer receives the actual listening URL from Shiny. If no IDE viewer is available, the system browser opens instead. Launching runs Shiny in the current R process and blocks that session until the app stops. Keep a supplied lake connection open for that time; this function neither disconnects it nor creates a background server. An exported snapshot can be used independently of a live lake connection.

Usage

dr_catalog_pane(
  lake = NULL,
  snapshot = NULL,
  launch = interactive(),
  refresh_seconds = 30,
  ...
)

Arguments

lake: Connected lake, or NULL when reading an exported snapshot.
snapshot: Path to JSON exported by dr_catalog_export().
launch: Start the app; FALSE returns a shiny.appobj for Connect.
refresh_seconds: Metadata refresh interval.
...: Additional arguments to shiny::runApp(), such as port and host. The launch.browser callback is managed by this function.

Value

A Shiny app object when launch = FALSE; otherwise the value returned when shiny::runApp() stops.

Examples

\dontshow{if (requireNamespace("shiny", quietly = TRUE) && requireNamespace("bslib", quietly = TRUE)) withAutoprint(\{ # examplesIf}
snapshot <- tempfile(fileext = ".json")
writeLines('{"assets":[]}', snapshot)
app <- dr_catalog_pane(snapshot = snapshot, launch = FALSE)
class(app)
unlink(snapshot)
\dontshow{\}) # examplesIf}

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