From 7b8a4fc28bd22e8e463cc6c40be99766f0cc1410 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Sun, 13 Jul 2008 12:12:58 +0000
Subject: [PATCH] Menu mapper: add support for :before, :after and :last
 options to #push method and add #delete method.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1660 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 lib/redmine.rb                              |  2 +-
 lib/redmine/menu_manager.rb                 | 38 +++++++++++++++++----
 test/functional/projects_controller_test.rb | 29 ++++++++++++++++
 3 files changed, 61 insertions(+), 8 deletions(-)

diff --git a/lib/redmine.rb b/lib/redmine.rb
index 84eda9f72..6db32340f 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -130,5 +130,5 @@ Redmine::MenuManager.map :project_menu do |menu|
   menu.push :files, { :controller => 'projects', :action => 'list_files' }, :caption => :label_attachment_plural
   menu.push :repository, { :controller => 'repositories', :action => 'show' },
               :if => Proc.new { |p| p.repository && !p.repository.new_record? }
-  menu.push :settings, { :controller => 'projects', :action => 'settings' }
+  menu.push :settings, { :controller => 'projects', :action => 'settings' }, :last => true
 end
diff --git a/lib/redmine/menu_manager.rb b/lib/redmine/menu_manager.rb
index 01c14083e..11b7a72e8 100644
--- a/lib/redmine/menu_manager.rb
+++ b/lib/redmine/menu_manager.rb
@@ -92,11 +92,9 @@ module Redmine
     
     class << self
       def map(menu_name)
-        mapper = Mapper.new
-        yield mapper
         @items ||= {}
-        @items[menu_name.to_sym] ||= []
-        @items[menu_name.to_sym] += mapper.items
+        mapper = Mapper.new(menu_name.to_sym, @items)
+        yield mapper
       end
       
       def items(menu_name)
@@ -109,6 +107,14 @@ module Redmine
     end
     
     class Mapper
+      def initialize(menu, items)
+        items[menu] ||= []
+        @menu = menu
+        @menu_items = items[menu]
+      end
+      
+      @@last_items_count = Hash.new {|h,k| h[k] = 0}
+      
       # Adds an item at the end of the menu. Available options:
       # * param: the parameter name that is used for the project id (default is :id)
       # * if: a Proc that is called before rendering the item, the item is displayed only if it returns true
@@ -116,13 +122,31 @@ module Redmine
       #   * a localized string Symbol
       #   * a String
       #   * a Proc that can take the project as argument
+      # * before, after: specify where the menu item should be inserted (eg. :after => :activity)
+      # * last: menu item will stay at the end (eg. :last => true)
       # * html_options: a hash of html options that are passed to link_to
       def push(name, url, options={})
-        items << MenuItem.new(name, url, options)
+        options = options.dup
+        
+        # menu item position
+        if before = options.delete(:before)
+          position = @menu_items.index {|i| i.name == before}
+        elsif after = options.delete(:after)
+          position = @menu_items.index {|i| i.name == after}
+          position += 1 unless position.nil?
+        elsif options.delete(:last)
+          position = @menu_items.size
+          @@last_items_count[@menu] += 1
+        end
+        # default position
+        position ||= @menu_items.size - @@last_items_count[@menu]
+        
+        @menu_items.insert(position, MenuItem.new(name, url, options))
       end
       
-      def items
-        @items ||= []
+      # Removes a menu item
+      def delete(name)
+        @menu_items.delete_if {|i| i.name == name}
       end
     end
     
diff --git a/test/functional/projects_controller_test.rb b/test/functional/projects_controller_test.rb
index f5f1c6733..4f0a2f179 100644
--- a/test/functional/projects_controller_test.rb
+++ b/test/functional/projects_controller_test.rb
@@ -312,4 +312,33 @@ class ProjectsControllerTest < Test::Unit::TestCase
     assert_redirected_to 'admin/projects'
     assert Project.find(1).active?
   end
+  
+  def test_project_menu
+    assert_no_difference 'Redmine::MenuManager.items(:project_menu).size' do
+      Redmine::MenuManager.map :project_menu do |menu|
+        menu.push :foo, { :controller => 'projects', :action => 'show' }, :cation => 'Foo'
+        menu.push :bar, { :controller => 'projects', :action => 'show' }, :before => :activity
+        menu.push :hello, { :controller => 'projects', :action => 'show' }, :caption => Proc.new {|p| p.name.upcase }, :after => :bar
+      end
+      
+      get :show, :id => 1
+      assert_tag :div, :attributes => { :id => 'main-menu' },
+                       :descendant => { :tag => 'li', :child => { :tag => 'a', :content => 'Foo' } }
+  
+      assert_tag :div, :attributes => { :id => 'main-menu' },
+                       :descendant => { :tag => 'li', :child => { :tag => 'a', :content => 'Bar' },
+                                                      :before => { :tag => 'li', :child => { :tag => 'a', :content => 'ECOOKBOOK' } } }
+
+      assert_tag :div, :attributes => { :id => 'main-menu' },
+                       :descendant => { :tag => 'li', :child => { :tag => 'a', :content => 'ECOOKBOOK' },
+                                                      :before => { :tag => 'li', :child => { :tag => 'a', :content => 'Activity' } } }
+      
+      # Remove the menu items
+      Redmine::MenuManager.map :project_menu do |menu|
+        menu.delete :foo
+        menu.delete :bar
+        menu.delete :hello
+      end
+    end
+  end
 end
-- 
2.39.5