Build completion notification for Windows.

tools/build.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 #
 
 import optparse
 import os
 import re
@@ skipping 315 matching lines @@
     # Use AppleScript to display a UI non-modal notification.
     script = 'display notification  "%s" with title "%s" sound name "Glass"' % (
       message, title)
     command = "osascript -e '%s' &" % script
   elif HOST_OS == 'linux':
     if success:
       icon = 'dialog-information'
     else:
       icon = 'dialog-error'
     command = "notify-send -i '%s' '%s' '%s' &" % (icon, message, title)
+  elif HOST_OS == 'win32':
+    if success:
+      icon = 'info'
+    else:
+      icon = 'error'
+    command = ("powershell -command \"" 
+      "[reflection.assembly]::loadwithpartialname('System.Windows.Forms')"
+        "| Out-Null;"
+      "[reflection.assembly]::loadwithpartialname('System.Drawing')"
+        "| Out-Null;"
+      "$n = new-object system.windows.forms.notifyicon;"
+      "$n.icon = [system.drawing.systemicons]::information;"
+      "$n.visible = $true;"
+      "$n.showballoontip(%d, '%s', '%s', "
+      "[system.windows.forms.tooltipicon]::%s);\"") % (
+        5000, # Notification stays on for this many milliseconds
+        message, title, icon)
 
   if command:
     # Ignore return code, if this command fails, it doesn't matter.
     os.system(command)
 
 
 def Main():
   utils.ConfigureJava()
   # Parse the options.
   parser = BuildOptions()
@@ skipping 100 matching lines @@
             NotifyBuildDone(build_config, success=False, start=start_time)
             return 1
           else:
             NotifyBuildDone(build_config, success=True, start=start_time)
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(Main())