# Copyright 2010-2014 Meik Michalke <meik.michalke@hhu.de>
#
# This file is part of the R package rkwarddev.
#
# rkwarddev is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# rkwarddev is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with rkwarddev. If not, see <http://www.gnu.org/licenses/>.
#' Create RKWard help nodes from plugin XML
#'
#' @param pXML Either an object of class \code{XiMpLe.doc} or \code{XiMpLe.node}, or path to a plugin XML file.
#' @param help Logical, if \code{TRUE} a list of XiMpLe.node objects will be returned, otherwise a character
#' vector with only the relevant ID names.
#' @param captions Logical, if \code{TRUE} captions will be generated for all "page", "tab" and "frame" nodes.
#' @param component Character string, name of the scanned component. Only needed if you want to search for
#' help text provided by \code{\link[rkwarddev:rk.set.rkh.prompter]{rk.set.rkh.prompter}}.
#' @return A character vector or a list of XiMpLe.node objects. Returns \code{NULL} if no documentable nodes are found.
#' @seealso \href{help:rkwardplugins}{Introduction to Writing Plugins for RKWard}
#' @export
rk.rkh.scan <- function(pXML, help=TRUE, captions=TRUE, component=NULL){
settings.tags <- c("browser", "checkbox", "dropdown", "input", "matrix",
"radio", "saveobject", "select", "spinbox", "valueslot", "varslot")
if(isTRUE(captions)){
caption.tags <- c("page", "tab", "frame")
} else {
caption.tags <- NULL
}
help.relevant.tags <- c(settings.tags, caption.tags)
single.tags <- get.single.tags(XML.obj=pXML, drop=c("comments","cdata", "declarations", "doctype"))
help.id <- get.IDs(single.tags=single.tags, relevant.tags=help.relevant.tags, add.abbrev=FALSE, tag.names=TRUE)
if("id" %in% colnames(help.id)){
if(isTRUE(help)){
help.nodes <- unlist(sapply(1:nrow(help.id), function(this.id){
if(help.id[this.id,"tag"] %in% caption.tags){
return(rk.rkh.caption(id=help.id[this.id,"id"]))
} else {
if(!is.null(component)){
rkh.text <- rk.get.rkh.prompter(component=component, id=help.id[this.id,"id"])
# check if the component is to be omitted
if(is.logical(rkh.text[["help"]]) & !isTRUE(rkh.text[["help"]])){
return(NULL)
} else {}
} else {
rkh.text <- NULL
}
return(rk.rkh.setting(id=help.id[this.id,"id"], text=rkh.text))
}
}))
} else {
help.nodes <- help.id[,"id"]
}
} else {
help.nodes <- NULL
}
return(help.nodes)
}
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