Make Diff::Display calculate line changes and display them in the merge request version

Also style the file list a bit nicer and change the event listener to be on the h4

2 files changed, 21 insertions, 2 deletions

diff --git a/vendor/diff-display/lib/diff/display/data_structure.rb b/vendor/diff-display/lib/diff/display/data_structure.rb
index 176eaf9..1da658c 100644
--- a/vendor/diff-display/lib/diff/display/data_structure.rb
+++ b/vendor/diff-display/lib/diff/display/data_structure.rb
@@ -3,6 +3,21 @@ module Diff
     class Data < Array
       def initialize
         super
+        @stats = {:additions => 0, :deletions => 0}
+      end
+
+      def stats
+        each do |block|
+          block.each do |line|
+            case line
+            when Diff::Display::AddLine
+              @stats[:additions] += 1
+            when Diff::Display::RemLine
+              @stats[:deletions] += 1
+            end
+          end
+        end
+        @stats
       end
       
       def to_diff
@@ -190,4 +205,4 @@ module Diff
     class NonewlineBlock < Block; end
     #:startdoc:#
   end
-end
\ No newline at end of file
+end
diff --git a/vendor/diff-display/lib/diff/display/unified.rb b/vendor/diff-display/lib/diff/display/unified.rb
index b5e0169..9754f89 100644
--- a/vendor/diff-display/lib/diff/display/unified.rb
+++ b/vendor/diff-display/lib/diff/display/unified.rb
@@ -5,6 +5,10 @@ module Diff
         @data = Diff::Display::Unified::Generator.run(udiff)
       end
       attr_reader :data
+
+      def stats
+        @stats ||= data.stats
+      end
       
       def render(renderer, out="")
         out << renderer.render(data)
@@ -12,4 +16,4 @@ module Diff
       end
     end
   end
-end
\ No newline at end of file
+end