temporary fix for #209 -- workaround bug in RStudio

DESCRIPTION

@@ -11,8 +11,8 @@ Description: Easily implement a variety of simulation models, with a focus on
     installed with `install.packages("fastshp", repos="http://rforge.net",
     type="source")`.
 URL: https://github.com/PredictiveEcology/SpaDES
-Version: 1.0.3.9007
-Date: 2015-10-28
+Version: 1.0.3.9008
+Date: 2015-10-29
 Authors@R: c(
     person(c("Alex", "M"), "Chubaty", email="alexander.chubaty@canada.ca",
     role=c("aut", "cre")),
@@ -100,4 +100,5 @@ Collate:
     'spades-package.R'
     'splitRaster.R'
     'spread-process.R'
+    'temp.R'
     'zzz.R'

R/temp.R

@@ -0,0 +1,44 @@
+### TEMPORARY FIX FOR ISSUE #209 -- FIXES RSTUDIO BUG
+### https://github.com/achubaty/rstudio/commit/378ae10a29a3c6a0eb7680ff7f99d495b44aed9c
+### pull request to come, pending copyright transfer agreement form
+
+options(editor = function(name, file, title) {
+
+  # use internal editor for files and functions, otherwise
+  # delegate to the default editor
+  if (missing(name) || is.null(name) || is.function(name)) {
+
+    # if no name then use file
+    if (missing(name) || is.null(name)) {
+      if (!is.null(file) && nzchar(file))
+        targetFile <- file
+      else
+        targetFile <- scratchFile
+    }
+    # otherwise it's a function, write it to a file for editing
+    else {
+      functionSrc <- .rs.deparseFunction(name, TRUE, FALSE)
+      targetFile <- scratchFile
+      writeLines(functionSrc, targetFile)
+    }
+
+    # invoke the RStudio editor on the file
+    if (.Call("rs_editFile", targetFile)) {
+
+      # try to parse it back in
+      newFunc <- try(eval.parent(parse(targetFile)),
+                     silent = TRUE)
+      if (inherits(newFunc, "try-error")) {
+        stop(newFunc, "You can attempt to correct the error using ",
+             title, " = edit()")
+      }
+
+      return(newFunc)
+    }
+    else {
+      stop("Error occurred while editing function '", name, "'")
+    }
+  }
+  else
+    edit(name, file, title, editor=defaultEditor)
+})