Index: lib/redmine/helpers/gantt.rb
===================================================================
--- lib/redmine/helpers/gantt.rb	(Revision 13036)
+++ lib/redmine/helpers/gantt.rb	(Arbeitskopie)
@@ -15,13 +15,16 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+require 'context_menus_helper'
+
 module Redmine
   module Helpers
     # Simple class to handle gantt chart data
-    class Gantt
+    class Gantt # FIXME: inherit  < Redmine::Hook::ViewListener
       include ERB::Util
       include Redmine::I18n
       include Redmine::Utils::DateCalculation
+      include ContextMenusHelper
 
       # Relation types that are rendered
       DRAW_TYPES = {
@@ -361,7 +364,7 @@
         end
         output = case options[:format]
         when :html
-          css_classes = ''
+          css_classes = 'hascontextmenu'
           css_classes << ' issue-overdue' if issue.overdue?
           css_classes << ' issue-behind-schedule' if issue.behind_schedule?
           css_classes << ' icon icon-issue' unless Setting.gravatar_enabled? && issue.assigned_to
@@ -381,6 +384,8 @@
                              :title => assigned_string).to_s.html_safe
           end
           s << view.link_to_issue(issue).html_safe
+# FIXME: causes undefined method error in ContextMenuHelper -> due to Gantt class not inherited from Redmine::Hook::ViewListener ???
+#          s << context_menu_link("##{issue.id}", {:controller => "issues", :action => "show", :id => issue}, :class => issue.css_classes, :title => "").html_safe
           subject = view.content_tag(:span, s, :class => css_classes).html_safe
           html_subject(options, subject, :css => "issue-subject",
                        :title => issue.subject, :id => "issue-#{issue.id}") + "\n"
Index: app/views/gantts/show.html.erb
===================================================================
--- app/views/gantts/show.html.erb	(Revision 13036)
+++ app/views/gantts/show.html.erb	(Arbeitskopie)
@@ -261,8 +261,12 @@
   <% end %>
 <% end %>
 
+<%= call_hook(:view_issues_context_menu_start, {:issues => @issues, :can => @can, :back => @back }) %>
+
 <%= @gantt.lines.html_safe %>
 
+<%= call_hook(:view_issues_context_menu_end, {:issues => @issues, :can => @can, :back => @back }) %>
+
 <% ###### Today red line (excluded from cache) ###### %>
 <% if Date.today >= @gantt.date_from and Date.today <= @gantt.date_to %>
   <%
@@ -330,3 +334,6 @@
     $("#draw_progress_line").change(drawGanttHandler);
   });
 <% end %>
+
+<%= context_menu issues_context_menu_path %>
+