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#' @include globals.R
NULL
# Given the name of a license, return the appropriate link HTML for the
# license, which may just be the name of the license if the name is
# unrecognized.
#
# Recognizes the 'standard' set of licenses used for R packages
# (see http://cran.r-project.org/doc/manuals/R-exts.html)
licenseLink <- function(licenseName) {
licenses <- list(
"GPL-2" = "https://gnu.org/licenses/gpl-2.0.txt",
"GPL-3" = "https://gnu.org/licenses/gpl-3.0.txt",
"LGPL-3" = "https://www.gnu.org/licenses/lgpl-3.0.txt",
"LGPL-2" = "http://www.gnu.org/licenses/old-licenses/lgpl-2.0.txt",
"LGPL-2.1" = "http://www.gnu.org/licenses/lgpl-2.1.txt",
"AGPL-3" = "http://www.gnu.org/licenses/agpl-3.0.txt",
"Artistic-2.0" = "http://www.r-project.org/Licenses/Artistic-2.0",
"BSD_2_clause" = "http://www.r-project.org/Licenses/BSD_2_clause",
"BSD_3_clause" = "http://www.r-project.org/Licenses/BSD_3_clause",
"MIT" = "http://www.r-project.org/Licenses/MIT")
if (exists(licenseName, where = licenses)) {
tags$a(href=licenses[[licenseName]], licenseName)
} else {
licenseName
}
}
# Returns tags containing showcase directives intended for the <HEAD> of the
# document.
showcaseHead <- function() {
deps <- list(
htmlDependency("jqueryui", "1.12.1", c(href="shared/jqueryui"),
script = "jquery-ui.min.js"),
htmlDependency("showdown", "0.3.1", c(href="shared/showdown/compressed"),
script = "showdown.js"),
htmlDependency("highlight.js", "6.2", c(href="shared/highlight"),
script = "highlight.pack.js")
)
mdfile <- file.path.ci(getwd(), 'Readme.md')
html <- with(tags, tagList(
script(src="shared/shiny-showcase.js"),
link(rel="stylesheet", type="text/css",
href="shared/highlight/rstudio.css"),
link(rel="stylesheet", type="text/css",
href="shared/shiny-showcase.css"),
if (file.exists(mdfile))
script(type="text/markdown", id="showcase-markdown-content",
paste(readUTF8(mdfile), collapse="\n"))
else ""
))
return(attachDependencies(html, deps))
}
# Returns tags containing the application metadata (title and author) in
# showcase mode.
appMetadata <- function(desc) {
cols <- colnames(desc)
if ("Title" %in% cols)
with(tags, h4(class="text-muted shiny-showcase-apptitle", desc[1,"Title"],
if ("Author" %in% cols) small(
br(), "by",
if ("AuthorUrl" %in% cols)
a(href=desc[1,"AuthorUrl"], class="shiny-showcase-appauthor",
desc[1,"Author"])
else
desc[1,"Author"],
if ("AuthorEmail" %in% cols)
a(href=paste("mailto:", desc[1,"AuthorEmail"], sep = ''),
class="shiny-showcase-appauthoreemail",
desc[1,"AuthorEmail"])
else "")
else ""))
else ""
}
navTabsHelper <- function(files, prefix = "") {
lapply(files, function(file) {
with(tags,
li(class=if (tolower(file) %in% c("app.r", "server.r")) "active" else "",
a(href=paste("#", gsub(".", "_", file, fixed=TRUE), "_code", sep=""),
"data-toggle"="tab", paste0(prefix, file)))
)
})
}
navTabsDropdown <- function(files) {
if (length(files) > 0) {
with(tags,
li(role="presentation", class="dropdown",
a(class="dropdown-toggle", `data-toggle`="dropdown", href="#",
role="button", `aria-haspopup`="true", `aria-expanded`="false",
"www", span(class="caret")
),
ul(class="dropdown-menu", navTabsHelper(files))
)
)
}
}
tabContentHelper <- function(files, path, language) {
lapply(files, function(file) {
with(tags,
div(class=paste("tab-pane",
if (tolower(file) %in% c("app.r", "server.r")) " active"
else "",
sep=""),
id=paste(gsub(".", "_", file, fixed=TRUE),
"_code", sep=""),
pre(class="shiny-code",
# we need to prevent the indentation of <code> ... </code>
HTML(format(tags$code(
class=paste0("language-", language),
paste(readUTF8(file.path.ci(path, file)), collapse="\n")
), indent = FALSE))))
)
})
}
# Returns tags containing the application's code in Bootstrap-style tabs in
# showcase mode.
showcaseCodeTabs <- function(codeLicense) {
rFiles <- list.files(pattern = "\\.[rR]$")
wwwFiles <- list()
if (isTRUE(.globals$IncludeWWW)) {
path <- file.path(getwd(), "www")
wwwFiles$jsFiles <- list.files(path, pattern = "\\.js$")
wwwFiles$cssFiles <- list.files(path, pattern = "\\.css$")
wwwFiles$htmlFiles <- list.files(path, pattern = "\\.html$")
}
with(tags, div(id="showcase-code-tabs",
a(id="showcase-code-position-toggle",
class="btn btn-default btn-sm",
onclick="toggleCodePosition()",
icon("level-up"),
"show with app"),
ul(class="nav nav-tabs",
navTabsHelper(rFiles),
navTabsDropdown(unlist(wwwFiles))
),
div(class="tab-content", id="showcase-code-content",
tabContentHelper(rFiles, path = getwd(), language = "r"),
tabContentHelper(wwwFiles$jsFiles,
path = paste0(getwd(), "/www"),
language = "javascript"),
tabContentHelper(wwwFiles$cssFiles,
path = paste0(getwd(), "/www"),
language = "css"),
tabContentHelper(wwwFiles$htmlFiles,
path = paste0(getwd(), "/www"),
language = "xml")
),
codeLicense))
}
# Returns tags containing the showcase application information (readme and
# code).
showcaseAppInfo <- function() {
descfile <- file.path.ci(getwd(), "DESCRIPTION")
hasDesc <- file.exists(descfile)
readmemd <- file.path.ci(getwd(), "Readme.md")
hasReadme <- file.exists(readmemd)
if (hasDesc) {
con <- textConnection(readUTF8(descfile))
on.exit(close(con), add = TRUE)
desc <- read.dcf(con)
}
with(tags,
div(class="container-fluid shiny-code-container well",
id="showcase-well",
div(class="row",
if (hasDesc || hasReadme) {
div(id="showcase-app-metadata", class="col-sm-4",
if (hasDesc) appMetadata(desc) else "",
if (hasReadme) div(id="readme-md"))
} else "",
div(id="showcase-code-inline",
class=if (hasReadme || hasDesc) "col-sm-8" else "col-sm-10 col-sm-offset-1",
showcaseCodeTabs(
if (hasDesc && "License" %in% colnames(desc)) {
small(class="showcase-code-license text-muted",
"Code license: ",
licenseLink(desc[1,"License"]))
} else "")))))
}
# Returns the body of the showcase document, given the HTML it should wrap.
showcaseBody <- function(htmlBody) {
with(tags, tagList(
table(id="showcase-app-code",
tr(td(id="showcase-app-container",
class="showcase-app-container-expanded",
htmlBody,
td(id="showcase-sxs-code",
class="showcase-sxs-code-collapsed")))),
showcaseAppInfo()))
}
# Sets the defaults for showcase mode (for app boot).
setShowcaseDefault <- function(showcaseDefault) {
.globals$showcaseDefault <- showcaseDefault
.globals$showcaseOverride <- as.logical(showcaseDefault)
}
# Given a UI tag/tagList, wrap it in appropriate tags for showcase mode.
showcaseUI <- function(ui) {
# If top-level tag is a body, replace its children with children wrapped in
# showcase stuff.
if (inherits(ui, "shiny.tag") && ui$name == "body") {
ui$children <- showcaseUI(ui$children)
return(ui)
}
tagList(
tags$head(showcaseHead()),
showcaseBody(ui)
)
}
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