+
+bool checkIfLoaded(FileName const & fn)
+{
+ return theBufferList().getBuffer(fn.absFilename());
+}
+
+
+Buffer * checkAndLoadLyXFile(FileName const & filename)
+{
+ // File already open?
+ Buffer * checkBuffer = theBufferList().getBuffer(filename.absFilename());
+ if (checkBuffer) {
+ if (checkBuffer->isClean())
+ return checkBuffer;
+ docstring const file = makeDisplayPath(filename.absFilename(), 20);
+ docstring text = bformat(_(
+ "The document %1$s is already loaded and has unsaved changes.\n"
+ "Do you want to abandon your changes and reload the version on disk?"), file);
+ if (Alert::prompt(_("Reload saved document?"),
+ text, 0, 1, _("&Reload"), _("&Keep Changes")))
+ return checkBuffer;
+
+ // FIXME: should be LFUN_REVERT
+ if (theBufferList().close(checkBuffer, false))
+ // Load it again.
+ return checkAndLoadLyXFile(filename);
+ else
+ // The file could not be closed.
+ return 0;
+ }
+
+ if (isFileReadable(filename)) {
+ Buffer * b = theBufferList().newBuffer(filename.absFilename());
+ if (!lyx::loadLyXFile(b, filename)) {
+ theBufferList().release(b);
+ return 0;
+ }
+ return b;
+ }
+
+ docstring text = bformat(_("The document %1$s does not yet "
+ "exist.\n\nDo you want to create a new document?"),
+ from_utf8(filename.absFilename()));
+ if (!Alert::prompt(_("Create new document?"),
+ text, 0, 1, _("&Create"), _("Cancel")))
+ return newFile(filename.absFilename(), string(), true);
+
+ return 0;
+}
+