added tag cloud widget

app/controllers/announcements_controller.rb

@@ -178,6 +178,35 @@ class AnnouncementsController < ApplicationController
     pack_data(announcements, top_anns)
   end
 
+  def tag_cloud
+    ma = ModuleApp.where(:key => "announcement").first
+    temp = []
+    ma.tags.each do |tag|
+      t1 = tag.taggings.collect{|t| t.taggable_id.to_s}
+      count = Bulletin.where(:id.in => t1).can_display.count
+      temp << {
+        "tag-name" => tag.name,
+        "count" => count,
+        "tag-url" => OrbitHelper.widget_more_url + "?tags[]=" + tag.id.to_s
+      }
+    end
+    max = temp.max_by{|t| t["count"]}["count"]
+    min = temp.min_by{|t| t["count"]}["count"]
+    tags = []
+    temp.each do |tag|
+      if tag["count"] > 0
+        percent = (tag["count"] * 100) / max
+        font_size = ((percent / 10).ceil) + 11
+        tag["font-size"] = font_size
+        tags << tag
+      end
+    end
+    {
+      "tags" => tags,
+      "extras" => {}
+    }
+  end
+
   def pack_data(announcements, top_anns = [])
     page = Page.where(:module => "announcement").first rescue nil
     feeds_anns = get_feed_announcements("widget")

config/locales/zh_tw.yml

@@ -79,6 +79,6 @@ zh_tw:
     mail_time: 時間
     image_upload_size_note: 建議檔案小於%{image_upload_size}
     resend_mail: 重新寄送提醒
-    is_external_link: 開啟內部連結
+    is_external_link: 連結外部網址
     external_link: 外部連結
     external_link_hint: "確定連結開頭為http://"

lib/announcement/engine.rb

@@ -5,7 +5,7 @@ module Announcement
       OrbitApp.registration "Announcement", :type => "ModuleApp" do
         module_label "announcement.announcement"
         base_url File.expand_path File.dirname(__FILE__)
-        widget_methods ["widget","random_announcement_widget"]
+        widget_methods ["widget","random_announcement_widget", "tag_cloud"]
         widget_settings [{"data_count"=>30}]
         taggable "Bulletin"
         categorizable