NEWS

dragulaR 0.3.3

dragula() gains a maxItems shortcut option for limiting how many elements a container will accept, e.g. dragula(c("Available", "Model"), maxItems = list(Model = 3)) (#4). A new example app, example08-max-items, demonstrates it.
The example apps are published as a static Shinylive site that runs entirely in the browser. tools/build-shinylive.R exports every app in inst/apps/ and a GitHub Actions workflow deploys the result to GitHub Pages.

dragulaValue() now returns character(0) for an empty container instead of dropping it from the result, so the returned list always has one entry per registered container.
useDragulajs() passes functions = "refreshDragulaR" to shinyjs::extendShinyjs(), which recent versions of shinyjs require for js$refreshDragulaR() to be defined.
Calling dragula() with no options no longer sends an empty JSON array where the dragula JavaScript library expects an options object.
The accepts wrapper installed by maxItems no longer fails when dragula calls it with a null target (an element dragged outside any container).
The JavaScript code checks that registered container ids actually exist in the document before using them.
Examples 02 and 07 call library(dragulaR); they previously only worked if the package happened to be attached already.
Fixed the runApp() paths for example 07 in the README - the directory is example07-input-options.

JS() is imported from htmlwidgets instead of V8, dropping the V8 dependency. V8::JS is a verbatim copy of htmlwidgets::JS, so this is a no-op at runtime, but it removes a compiled dependency and makes the package loadable under webR/Shinylive, where V8 has no WebAssembly build.
Expanded test coverage for dragulaValue(), copyOnly and maxItems.
Documentation regenerated with roxygen2 8.1.0; added Encoding: UTF-8 to DESCRIPTION and return-value documentation for all exported functions.
Added AGENTS.md with guidelines for AI agents working on the package.

dragula() accepts arbitrary dragula JavaScript options through ..., which are forwarded to the JavaScript library (thanks to Darren Maczka). id is still handled as the Shiny input id.
Added the copyOnly shortcut option, which makes a container a source that elements are copied from rather than moved out of, together with the example07-input-options app.
Darren Maczka added to the authors list as a contributor.

dragula(x, id = NULL) now takes a vector of container ids and registers them with a single dragula instance; elements carrying a drag attribute are the ones tracked.
Added dragulaValue() for turning the raw input$dragula object into a named list of container ids and element order.
Added useDragulajs() and the js$refreshDragulaR() JavaScript function for refreshing dragula after elements are added dynamically with insertUI() or renderUI().
The widget waits for Shiny to finish initialising before rendering.
Added example apps covering basic usage, Shiny inputs, element order, Shiny modules and dynamically inserted elements.
Added test suite, pkgdown site and CI (Travis, AppVeyor, codecov).
Updated the bundled dragula JavaScript library.

First version: dragula(), dragulaOutput() and renderDragula() wrapping the dragula JavaScript library as an htmlwidget.