pagination on the history page

lib/gollum/frontend/app.rb

@@ -83,6 +83,8 @@ module Precious
       @name     = params[:name]
       wiki      = Gollum::Wiki.new($path)
       @page     = wiki.page(@name)
+      @page_num = [params[:page].to_i, 1].max
+      @versions = @page.versions :page => @page_num
       mustache :history
     end
 

lib/gollum/frontend/templates/history.mustache

@@ -10,6 +10,7 @@
           <th colspan="5">
             Select any two versions to <input type="submit" value="Compare" />
           </th>
+        </tr>
         {{#versions}}
           <tr class="commit">
             <td class="checkbox">
@@ -27,6 +28,10 @@
           </tr>
         {{/versions}}
       </table>
+      <div class="pagination">
+        {{{previous_link}}}
+        {{{next_link}}}
+      </div>
     </form>
   </div>
 </div>

lib/gollum/frontend/views/history.rb

@@ -1,15 +1,15 @@
 module Precious
   module Views
     class History < Layout
-      attr_reader :page
+      attr_reader :page, :page_num
 
       def title
         "History of #{@page.title}"
       end
 
       def versions
-        i = @page.versions.size + 1
-        @page.versions.map do |v|
+        i = @versions.size + 1
+        @versions.map do |v|
           i -= 1
           { :id       => v.id,
             :id7      => v.id[0..6],
@@ -21,6 +21,24 @@ module Precious
             :gravatar => Digest::MD5.hexdigest(v.author.email) }
         end
       end
+
+      def previous_link
+        label = "&laquo; Previous"
+        if @page_num == 1
+          %(<span class="disabled">#{label}</span>)
+        else
+          %(<a href="/history/#{@page.name}?page=#{@page_num-1}" hotkey="h">#{label}</a>)
+        end
+      end
+
+      def next_link
+        label = "Next &raquo;"
+        if @versions.size == Gollum::Page.per_page
+          %(<a href="/history/#{@page.name}?page=#{@page_num+1}" hotkey="l">#{label}</a>)
+        else
+          %(<span class="disabled">#{label}</span>)
+        end
+      end
     end
   end
 end