right click in RStudio Viewer

code.R

library(htmltools)
# using discussion from https://stackoverflow.com/questions/2973321/javascript-capturing-right-click-and-disabling-menu-only-within-certain-element
browsable(
  tagList(
    tags$div(id="divctx","right click me"),
    tags$script(
"
$('#divctx').bind('contextmenu', function(e) {
// do stuff here instead of normal context menu
alert('right click');
return false;
});
"
    ),
    rmarkdown::html_dependency_jquery()
  )
)

library(htmltools)

browsable(
  tagList(
    tags$head(
      tags$script(src="//cdn.jsdelivr.net/gh/mar10/jquery-ui-contextmenu@v1/jquery.ui-contextmenu.min.js")
    ),
    tags$div(id="divctx","right click me"),
    tags$script(
'
$(document).contextmenu({
  delegate: "#divctx",  autoFocus: true,
  preventContextMenuForPopup: true,
  preventSelect: true,
  taphold: true,
  menu: [
    {title: "Cut <kbd>Ctrl+X</kbd>", cmd: "cut", uiIcon: "ui-icon-scissors"},
    {title: "Copy <kbd>Ctrl+C</kbd>", cmd: "copy", uiIcon: "ui-icon-copy"}
  ]
})
'
    ),
    rmarkdown::html_dependency_jquery(),
    rmarkdown::html_dependency_jqueryui()
  )
)

i think i read in a thread yesterday that you can force the default context menu to have 100% opacity, that way only the user defined one is showing. (right now the rstudio one comes over the one you wrote in)