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Add support for saving shiny.tag/shiny.tag.list objects in saveWidget #309

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Add support for saving shiny.tag/shiny.tag.list objects in saveWidget #309

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21 changes: 18 additions & 3 deletions R/savewidget.R
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Original file line number Diff line number Diff line change
Expand Up @@ -25,15 +25,30 @@ saveWidget <- function(widget, file, selfcontained = TRUE, libdir = NULL,
background <- sprintf("rgba(%d,%d,%d,%f)", bgcol[1,1], bgcol[2,1], bgcol[3,1], bgcol[4,1]/255)
}

# convert to HTML tags
html <- toHTML(widget, standalone = TRUE, knitrOptions = knitrOptions)

# form a path for dependenent files
if (is.null(libdir)){
libdir <- paste(tools::file_path_sans_ext(basename(file)), "_files",
sep = "")
}

# convert to HTML tags
isWidget <- inherits(widget, "htmlwidget")
isTags <- inherits(widget, c("shiny.tag", "shiny.tag.list"))
html <- if (isWidget) {
toHTML(widget, standalone = TRUE, knitrOptions = knitrOptions)
} else if (isTags) {
widget
} else {
stop("`widget` must be an object of class 'htmlwidget' or 'shiny.tag' or 'shiny.tag.list'.", call. = FALSE)
}

# selfcontained isn't yet supported in htmltools, but maybe it will someday
# https://github.com/rstudio/htmltools/issues/73
if (isTags && selfcontained) {
warning("`selfcontained` is not yet supported for HTML tags (just HTML widgets).", call. = FALSE)
selfcontained <- FALSE
}

# make it self-contained if requested
if (selfcontained) {

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