Shoes_Tricky_Blocks.rb

# This is a replay to Fela's question:
# http://gist.github.com/452089
# 
# Look at Shoes manual, The Rules of Shoes
#  - Shoes Tricky Blocks
#  - Block Redirection
#
# http://shoes.heroku.com/manual/Rules.html
# 
# If you'd like to add all outputs of addparas into the flow slot you defined 
# in the Shoes.app block, you need to bring the flow slot object like this:

class Shoes::MyWidget < Shoes::Widget
 def initialize slot
   @slot = slot
   @slot.append do
     background blue
     para "this is MyWidget"
   end
 end

 def addpara p
   @slot.append do
     para strong(p)
     para self
   end
 end
end

Shoes.app do
 background yellow
 @w = my_widget flow(:width => 300, :left => 100)
 @w.addpara "XXX"

 Thread.new do
   sleep 0.1
   @w.addpara "YYY"
 end
end