X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/e322205a65bdc3a0565997eb68c86e74cd191762..09a3f207ceb2ddcdc7d31d0190eeed94962740d1:/apps/workbench/app/helpers/collections_helper.rb

diff --git a/apps/workbench/app/helpers/collections_helper.rb b/apps/workbench/app/helpers/collections_helper.rb
index 23a440ad1e..3f62a5601c 100644
--- a/apps/workbench/app/helpers/collections_helper.rb
+++ b/apps/workbench/app/helpers/collections_helper.rb
@@ -1,3 +1,7 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
 module CollectionsHelper
   def d3ify_links(links)
     links.collect do |x|
@@ -51,6 +55,27 @@ module CollectionsHelper
     f0 = '' if f0 == '.'
     f0 = f0[2..-1] if f0[0..1] == './'
     f0 += '/' if not f0.empty?
-    file_path = "#{f0}#{file[1]}"
+    "#{f0}#{file[1]}"
+  end
+
+  ##
+  # Check if collection preview is allowed for the given filename with extension
+  #
+  def preview_allowed_for file_name
+    file_type = MIME::Types.type_for(file_name).first
+    if file_type.nil?
+      if file_name.downcase.end_with?('.cwl') # unknown mime type, but we support preview
+        true
+      else
+        false
+      end
+    elsif (file_type.raw_media_type == "text") || (file_type.raw_media_type == "image")
+      true
+    elsif (file_type.raw_media_type == "application") &&
+          Rails.configuration.Workbench.Workbench.ApplicationMimetypesWithViewIcon[file_type.sub_type]
+      true
+    else
+      false
+    end
   end
 end