note 

	description: "A class for MS-Windows to simulate resizing by children"
	legal: "See notice at end of class.";
	status: "See notice at end of class."; 
	date: "$Date$"; 
	revision: "$Revision$" 
 
deferred class

	SIZEABLE_WINDOWS

feature -- Status report

	fixed_size : BOOLEAN
			-- Is this widget or it's parents fixed?
		local
			pw : SIZEABLE_WINDOWS
		do
			Result := fixed_size_flag 
			if not Result then
				pw ?= parent 
				Result := pw /= Void and then pw.fixed_size
			end
		end

feature -- Status setting

	allow_recompute_size
			-- Allow resizing of the children.
		do
			fixed_size_flag := False
	        end

	forbid_recompute_size
			-- Forbid resizing of the children.
		do
			fixed_size_flag := True
		end

	resize_for_shell
			-- Resize current widget if the parent is a shell.			
		local
			tw: TOP_IMP
		do
			tw ?= parent
			if tw /= Void and then tw.exists and then not fixed_size_flag then
				set_x_y (0, 0)
				set_size (tw.client_width, tw.client_height)
			end
		end


feature {SIZEABLE_WINDOWS} -- Implementation

	fixed_size_flag: BOOLEAN
			-- Flag to indicate if this widget can have its size changed

	parent: COMPOSITE_IMP
			-- Parent of this sizeable widget
		deferred
		end

	set_x_y (new_x, new_y: INTEGER)
			-- Positioning of this sizeable widget
		deferred
		end

	set_size (new_width, new_height: INTEGER)
			-- Set the size of this widget
		deferred
		end
	
note
	copyright:	"Copyright (c) 1984-2006, Eiffel Software and others"
	license:	"Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
			 Eiffel Software
			 356 Storke Road, Goleta, CA 93117 USA
			 Telephone 805-685-1006, Fax 805-685-6869
			 Website http://www.eiffel.com
			 Customer support http://support.eiffel.com
		]"




end -- SIZEABLE_WINDOWS