module Context

	class Widget
	
		attr_reader :delegate
	
		def initialize(delegate)
			@delegate = delegate
		end
		
		# This method is called after the widget has been
		# successfully added to another widget
		def addedTo(widget)
			# This is an abstract method, the child classes should
			# implement this		    
		end
		
		# This method is called after the widget has been
		# successfully removed from another widget
		def removedFrom(widget)
			# This is an abstract method, the child classes should
			# implement this		    
		end
		
		# Use this widget as a container for the passed widget
		def add(widget)
			# This is an abstract method, the child classes should
			# implement this
		end
	
		def remove(widget)
			# This is an abstract method, the child classes should
			# implement this
		end

		def eql?(widget)
			@delegate.eql?(widget.delegate)
		end
	end
end