Application checks the site for upgrades.

app/ui/mainwindow.rb

@@ -1,5 +1,6 @@
 require 'app/boot'
 
+require 'json'
 
 # methods for the main app
 module HH::App

app/ui/tabs/home.rb

@@ -1,26 +1,26 @@
 # the home tab content
-# partly unfinished: some features have just started being implemented
 
 class HH::SideTabs::Home < HH::SideTab
-# unfinished method that asks if the user wants to upgrade
-#  def home_bulletin
-#    stack do
-#      background "#FF9".."#FFF"
-#      subtitle "Upgrade to 0.7?", :font => "Phonetica", :align => "center", :margin => 8
-#      para "A New Hackety Hack is Here!", :align => "center", :margin_bottom => 50
-#      glossb "Upgrade", :top => 90, :left => 0.42, :width => 100, :color => "red" do
-#        alert("No upgrades yet.")
-#      end
-#    end
-#    stack do
-#      background black(0.4)..black(0.0)
-#      image 1, 10
-#    end
-#  end
+  def home_bulletin(new_version)
+    @bulletin_stack.clear do
+      stack do
+        background "#FF9"
+        subtitle "Upgrade to #{new_version}!", :font => "Phonetica", :align => "center", :margin => 8
+        para "A New Hackety Hack is Here!", :align => "center"
+        para "Go to ", link("hackety-hack.com", :click => "http://hackety-hack.com/download"), " to get it!", :align => "center", :margin_bottom => 20
+      end
+    end
+  end
   def initialize *args, &blk
     super *args, &blk
     # never changes so is most efficient to load here
     @samples = HH.samples
+    Upgrade::check_latest_version do |version|
+      warn "version #{version['current_version']}"
+      if version['current_version'] != HH::VERSION
+        home_bulletin(version['current_version'])
+      end
+    end
   end
 
   # auxiliary method to displays the arrows, for example in case
@@ -109,8 +109,6 @@ def home_lessons
     para "You have no lessons.", :margin_left => 12, :font => "Lacuna Regular"
   end
 
-  # add a tab at the top of the homepane, for now there is only one tab:
-  # (Programs)
   def hometab name, bg, starts = false, &blk
     tab =
       stack :margin_top => (starts ? 6 : 10), :margin_left => 14, :width => 120 do
@@ -170,6 +168,8 @@ def content
         background rgb(233, 239, 224, 0.85)..rgb(233, 239, 224, 0.0)
         image 10, 70
       end
+      @bulletin_stack = stack do
+      end
     end
   end
 end

lib/dev/init.rb

@@ -12,6 +12,7 @@
 HH::FONTS = HH::HOME + "/fonts"
 HH::LESSONS = HH::HOME + "/lessons"
 $LOAD_PATH << HH::HOME
+HH::VERSION = 1.0
 
 # platform-specific directories
 case RUBY_PLATFORM when /win32/, /i386-mingw32/

lib/web/all.rb

@@ -1,2 +1,3 @@
 require 'lib/web/hacker'
 require 'lib/web/web'
+require 'lib/web/version'

lib/web/version.rb

@@ -0,0 +1,14 @@
+require 'lib/web/yaml'
+
+module Upgrade
+  class << self
+    include HH::YAML
+
+    def check_latest_version &blk
+      http('GET', "/version.json") do |result| 
+        response = JSON.parse(result.response.body)
+        blk[response]
+      end
+    end
+  end
+end