[#808] Show issue description diffs in the lightbox popup

app/controllers/journals_controller.rb

@@ -95,6 +95,7 @@ class JournalsController < ApplicationController
       @issue = @journal.journaled
       respond_to do |format|
         format.html { }
+        format.js { render :layout => false }
       end
     else
       render_404

public/javascripts/application.js

@@ -617,4 +617,31 @@ jQuery(document).ready(function($) {
   $('#nav-login-content').click(function(event){
     event.stopPropagation();
   });
+
+  $('.lightbox-ajax').click(function(event) {
+    $('#dialog-window').
+      html('').
+      load(this.href, function() {
+        // Set width to the content width
+        var width = $('#content').width();
+        $(this).dialog("option", "width", width).dialog('open');
+      });
+
+    event.preventDefault();
+    return false;
+
+  });
+
+  // Configures the default dialog window
+  function setUpDialogWindow() {
+    $('#dialog-window').
+      dialog({
+        autoOpen: false,
+        minWidth: 400,
+        width: 800
+      });
+
+  }
+
+  setUpDialogWindow();
 });

vendor/plugins/acts_as_journalized/lib/journal_formatter.rb

@@ -127,7 +127,7 @@ module JournalFormatter
   #
   # Truncates the content. Adds a link to view a diff.
   def format_html_diff_detail(key, label, old_value, value)
-    link = link_to(l(:label_more), {:controller => 'journals', :action => 'diff', :id => id, :field => key.to_s})
+    link = link_to(l(:label_more), {:controller => 'journals', :action => 'diff', :id => id, :field => key.to_s}, :class => 'lightbox-ajax')
     old_value = truncate(old_value, :length => 80)
     value = truncate(value, :length => 80) + " " + link
     [old_value, value]