From 77cf667e75bff689308026213d025ab4e1dba570 Mon Sep 17 00:00:00 2001
From: Dmitry Babenko <dmitry@babenko.in.ua>
Date: Tue, 8 Jan 2013 21:31:24 +0200
Subject: [PATCH] ChiliProject 3.4 compatibility

---
 .../_progressive_projects_list.html.erb       |  2 +
 init.rb                                       | 14 ++++--
 lib/progressive/application_helper_patch.rb   | 44 +++++++++++++++++++
 lib/progressive_projects_list.rb              |  4 ++
 4 files changed, 61 insertions(+), 3 deletions(-)
 create mode 100644 lib/progressive/application_helper_patch.rb

diff --git a/app/views/settings/_progressive_projects_list.html.erb b/app/views/settings/_progressive_projects_list.html.erb
index bdc339a..5ddc56c 100644
--- a/app/views/settings/_progressive_projects_list.html.erb
+++ b/app/views/settings/_progressive_projects_list.html.erb
@@ -1,8 +1,10 @@
 <div class="tabular settings">
+<% if Rails::VERSION::MAJOR >= 3 %>
 	<p>
 		<%= setting_label(:show_project_menu) %>
 		<%= check_box_tag('settings[show_project_menu]', true, @settings['show_project_menu']) %>
 	</p>
+<% end %>
 	<p>
 		<%= setting_label(:show_project_description) %>
 		<%= check_box_tag('settings[show_project_description]', true, @settings['show_project_description']) %>
diff --git a/init.rb b/init.rb
index 344d926..a46ea8b 100644
--- a/init.rb
+++ b/init.rb
@@ -13,6 +13,14 @@
   }, :partial => 'settings/progressive_projects_list'
 end
 
-require 'progressive_projects_list_listener'
-require 'progressive_projects_list'
-ProjectsHelper.send(:include, ProgressiveProjectsList)
+if Rails::VERSION::MAJOR >= 3
+  require 'progressive_projects_list_listener'
+  require 'progressive_projects_list'
+else
+  # Rails 2.x (ChiliProject) compatibility
+  require 'dispatcher'
+  Dispatcher.to_prepare :progressive_projects_list do
+    require_dependency 'progressive_projects_list'
+    require_dependency 'progressive/application_helper_patch'
+  end
+end
diff --git a/lib/progressive/application_helper_patch.rb b/lib/progressive/application_helper_patch.rb
new file mode 100644
index 0000000..da3288f
--- /dev/null
+++ b/lib/progressive/application_helper_patch.rb
@@ -0,0 +1,44 @@
+module Progressive::ApplicationHelperPatch
+  def self.included(base) # :nodoc:
+    base.send(:include, InstanceMethods)
+  end
+
+  module InstanceMethods
+    # Renders a tree of projects as a nested set of unordered lists
+    # The given collection may be a subset of the whole project tree
+    # (eg. some intermediate nodes are private and can not be seen)
+    def render_project_nested_lists(projects)
+      s = ''
+      if projects.any?
+        ancestors = []
+        original_project = @project
+        projects.sort_by(&:lft).each do |project|
+          # set the project environment to please macros.
+          @project = project
+          if (ancestors.empty? || project.is_descendant_of?(ancestors.last))
+            s << "<ul class='projects #{ ancestors.empty? ? 'root' : nil}'>\n"
+          else
+            ancestors.pop
+            s << "</li>"
+            while (ancestors.any? && !project.is_descendant_of?(ancestors.last))
+              ancestors.pop
+              s << "</ul></li>\n"
+            end
+          end
+          classes = (ancestors.empty? ? 'root' : 'child')
+          s << "<li class='#{classes}'><div class='#{classes}'>"
+          s << h(block_given? ? yield(project) : project.name)
+          s << "</div>\n"
+          ancestors << project
+        end
+        s << ("</li></ul>\n" * ancestors.size)
+        @project = original_project
+      end
+      s.html_safe
+    end
+  end
+end
+
+unless ApplicationHelper.included_modules.include? Progressive::ApplicationHelperPatch
+  ApplicationHelper.send(:include, Progressive::ApplicationHelperPatch)
+end
diff --git a/lib/progressive_projects_list.rb b/lib/progressive_projects_list.rb
index f74b978..c200680 100644
--- a/lib/progressive_projects_list.rb
+++ b/lib/progressive_projects_list.rb
@@ -60,3 +60,7 @@ def render_project_menu(project)
     end
   end
 end
+
+unless ProjectsHelper.included_modules.include? ProgressiveProjectsList
+  ProjectsHelper.send(:include, ProgressiveProjectsList)
+end