commit b306fb1348f19b59565f36df8e02701498df261f
Author: Yuki Sonoda (Yugui) <yugui@yugui.jp>
Date:   Sun Feb 20 16:22:13 2011 +0900

    Allows plugins to add their own default gravatar.

diff --git a/app/helpers/settings_helper.rb b/app/helpers/settings_helper.rb
index 6dc33a8..39f4496 100644
--- a/app/helpers/settings_helper.rb
+++ b/app/helpers/settings_helper.rb
@@ -81,4 +81,19 @@ module SettingsHelper
                          l_or_humanize(notifiable.name, :prefix => 'label_'),
                        :class => notifiable.parent.present? ? "parent" : '')
   end
+
+  def default_gravatar_options
+    Redmine::GravatarManager.registered_gravatars.map do |name, url_or_file_name, options|
+      if Symbol === url_or_file_name
+        [name, url_or_file_name]
+      else
+        options = (options || {}).with_indifferent_access
+        source = image_path(url_or_file_name, options)
+        if source !~ %r{^[-a-z]+://}
+          source = "#{Setting.protocol}://#{Setting.host_name}#{source}"
+        end
+        [name, source]
+      end
+    end
+  end
 end
diff --git a/app/views/settings/_display.rhtml b/app/views/settings/_display.rhtml
index c6fe833..3daf4c5 100644
--- a/app/views/settings/_display.rhtml
+++ b/app/views/settings/_display.rhtml
@@ -15,7 +15,7 @@
 
 <p><%= setting_check_box :gravatar_enabled %></p>
 
-<p><%= setting_select :gravatar_default, [["Wavatars", 'wavatar'], ["Identicons", 'identicon'], ["Monster ids", 'monsterid'], ["Retro", "retro"]], :blank => :label_none %></p>
+<p><%= setting_select :gravatar_default, default_gravatar_options, :blank => :label_none %></p>
 </div>
 
 <%= submit_tag l(:button_save) %>
diff --git a/lib/redmine.rb b/lib/redmine.rb
index 7fcd764..9e1e0c7 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -230,4 +230,11 @@ Redmine::WikiFormatting.map do |format|
   format.register :textile, Redmine::WikiFormatting::Textile::Formatter, Redmine::WikiFormatting::Textile::Helper
 end
 
+Redmine::GravatarManager.map do |options|
+  options.register 'Wavatars', :wavatar
+  options.register 'Identicons', :identicon
+  options.register 'Monster ids', :monsterid
+  options.register 'Retro', :retro
+end
+
 ActionView::Template.register_template_handler :rsb, Redmine::Views::ApiTemplateHandler
diff --git a/lib/redmine/gravatar_manager.rb b/lib/redmine/gravatar_manager.rb
new file mode 100644
index 0000000..b0ee921
--- /dev/null
+++ b/lib/redmine/gravatar_manager.rb
@@ -0,0 +1,18 @@
+module Redmine
+  module GravatarManager
+    @map = []
+
+    def self.map
+      yield self
+    end
+
+    def self.register(name, url_or_file_name, options = nil)
+      raise ArgumentError, "gravatar name '#{name}' is already taken" if @map.assoc(name.to_s)
+      @map << [name.to_s, url_or_file_name.to_s, options]
+    end
+
+    def self.registered_gravatars
+      @map.dup
+    end
+  end
+end
diff --git a/lib/redmine/plugin.rb b/lib/redmine/plugin.rb
index f30277a..f88a43f 100644
--- a/lib/redmine/plugin.rb
+++ b/lib/redmine/plugin.rb
@@ -270,6 +270,13 @@ module Redmine #:nodoc:
       Redmine::WikiFormatting.register(name, formatter, helper)
     end
 
+    # Registers an option for the default gravatar
+    # * +label+ - human-readable name
+    # * +url_or_file_name+ - URL (or file name) for the image file.
+    def default_gravatar(label, url_or_file_name)
+      Redmine::GravatarManager.register(label, url_or_file_name, :plugin => self.id)
+    end
+
     # Returns +true+ if the plugin can be configured.
     def configurable?
       settings && settings.is_a?(Hash) && !settings[:partial].blank?