new_contents: #!/usr/bin/python
  import pygtk
  pygtk.require('2.0')
  
  from sugar.session.UITestSession import UITestSession
  
  session = UITestSession()
  session.start()
  
  import gtk
  import goocanvas
  
  from sugar.canvas.IconColor import IconColor
  from sugar.canvas.IconItem import IconItem
  from sugar.canvas.CanvasView import CanvasView
  from sugar.canvas.GridBox import GridBox
  from sugar.canvas.GridModel import GridModel
  from sugar.canvas.GridLayout import GridConstraints
  
  def _new_icon_clicked_cb(icon):
  	box.remove_child(icon)
  
  def _icon_clicked_cb(icon):
  	icon = IconItem(color=IconColor(), icon_name='activity-groupchat')
  	icon.connect('clicked', _new_icon_clicked_cb)
  	box.add_child(icon, 0)
  
  model = GridModel('#4f4f4f')
  layout = model.get_layout()
  
  box = GridBox(GridBox.HORIZONTAL, 5, 6)
  layout.set_constraints(box, GridConstraints(0, 0, 5, 1))
  model.add(box)
  
  rect = goocanvas.Rect(fill_color='red')
  box.add_child(rect)
  
  icon = IconItem(color=IconColor(), icon_name='activity-web')
  icon.connect('clicked', _icon_clicked_cb)
  box.add_child(icon)
  
  icon = IconItem(color=IconColor(), icon_name='activity-groupchat')
  box.add_child(icon)
  
  window = gtk.Window()
  window.connect("destroy", lambda w: gtk.main_quit())
  window.show()
  
  canvas = CanvasView()
  canvas.show()
  window.add(canvas)
  canvas.set_model(model.get())
  
  gtk.main()
  
subject: Add test