Rewrite the Gantt chart. #6276

This version of the Gantt chart supports nested charts. So Projects,
Versions, and Issues will be nested underneath their parents correctly.

Additional features:

* Move all Gantt code to Redmine::Helpers::Gantt class instead of having it in
  the Gantt class, controller, and view
* Recursive and nest sub-projects
* Recursive and nest versions
* Recursive and nest issues
* Draw a line showing when a Project is active and it's progress
* Draw a line showing when a Version is active and it's progress
* Show a version's % complete
* Change the color of Projects, Versions, and Issues if they are late or
  behind schedule
* Added Project#start_date and #due_date
* Added Project#completed_percent
* Use a mini-gravatar on the Gantt chart
* Added tests for the Gantt rendering

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4072 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -121,6 +121,11 @@ module ApplicationHelper
 
     link_to(text, {:controller => 'repositories', :action => 'revision', :id => project, :rev => revision}, :title => l(:label_revision_id, revision))
   end
+  
+  def link_to_project(project, options={})
+    options[:class] ||= 'project'
+    link_to(h(project), {:controller => 'projects', :action => 'show', :id => project}, :class => options[:class])
+  end
 
   # Generates a link to a project if active
   # Examples:
@@ -832,6 +837,8 @@ module ApplicationHelper
         email = $1
       end
       return gravatar(email.to_s.downcase, options) unless email.blank? rescue nil
+    else
+      ''
     end
   end
 

app/helpers/gantt_helper.rb

@@ -0,0 +1,24 @@
+# redMine - project management software
+# Copyright (C) 2006  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+module GanttHelper
+  def number_of_issues_on_versions(gantt)
+    versions = gantt.events.collect {|event| (event.is_a? Version) ? event : nil}.compact
+
+    versions.sum {|v| v.fixed_issues.for_gantt.with_query(@query).count}
+  end
+end

app/helpers/issues_helper.rb

@@ -35,8 +35,10 @@ module IssuesHelper
     @cached_label_due_date ||= l(:field_due_date)
     @cached_label_assigned_to ||= l(:field_assigned_to)
     @cached_label_priority ||= l(:field_priority)
-    
+    @cached_label_project ||= l(:field_project)
+
     link_to_issue(issue) + "<br /><br />" +
+      "<strong>#{@cached_label_project}</strong>: #{link_to_project(issue.project)}<br />" +
       "<strong>#{@cached_label_status}</strong>: #{issue.status.name}<br />" +
       "<strong>#{@cached_label_start_date}</strong>: #{format_date(issue.start_date)}<br />" +
       "<strong>#{@cached_label_due_date}</strong>: #{format_date(issue.due_date)}<br />" +