Demonstrates creating a custom Shiny input binding for a simple JavaScript-enabled "dueling select box" input widget.
Run this example by calling:
shiny::runGitHub("shiny-js-examples", "jcheng5", subdir="input")
chooser.R contains reusable R function chooserInput that can be used in ui.R. It also registers an input handler with Shiny to reshape the data into a nicer form before handing it over to the app's server side R code.
The file www/chooser-binding.js contains the JavaScript code that defines a custom Shiny input binding for the chooser, as well as the implementation of the chooser itself. It's loaded into the app implicitly by the chooserInput function.
This example is set up for easy reading of the code and easy running via shiny::runGitHub().
If instead we wanted to make this line chart component easily distributable to other Shiny users, we would set it up as a package. chooser.R would go into the R subdirectory. The contents of www would be moved to inst, and chooserInput would call shiny::addResourcePath to make them available at a URL prefix like "chooser". See shiny-incubator for one example.