indexing
	description: "Eiffel Vision sizeable. Mswindows implementation of ancestor%Nfor EV_SIZEABLE_PRIMITIVE_IMP and EV_SIZEABLE_CONTAINER_IMP."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2006-04-07 17:05:59 -0700 (Fri, 07 Apr 2006) $"
	revision: "$Revision: 58088 $"

deferred class interface
	EV_SIZEABLE_IMP

feature -- Access

	generating_type: STRING_8
			-- Name of current object's generating type
			-- (type of which it is a direct instance)
			-- (from ANY)

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)

	minimum_height: INTEGER_32
			-- Lower bound on height in pixels.

	minimum_width: INTEGER_32
			-- Lower bound on width in pixels.
	
feature -- Comparison

	frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			shallow_implies_deep: standard_equal (some, other) implies Result
			both_or_none_void: (some = Void) implies (Result = (other = Void))
			same_type: (Result and (some /= Void)) implies some.same_type (other)
			symmetric: Result implies deep_equal (other, some)

	frozen equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))

	is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other.is_equal (Current)
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))

	frozen standard_is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of `other' (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of `other'?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
	
feature -- Resizing

	ev_set_minimum_height (value: INTEGER_32)
			-- Make `value' the new minimum_height of `Current'.
			-- There is no need to grow `Current' if its size is
			-- too small, the parent will do it if necessary.

	ev_set_minimum_size (mw, mh: INTEGER_32)
			-- Make `mw' the new minimum_width and `mh' the new
			-- minimum_height of `Current'.

	ev_set_minimum_width (value: INTEGER_32)
			-- Make `value' the new minimum_width of `Current'.
			-- There is no need to grow `Current' if its size is
			-- too small, the parent will do it if necessary.

	set_height (value: INTEGER_32)
			-- Make `value' the new height of `Current'.

	set_minimum_height (value: INTEGER_32)
			-- Make `value' the new minimum_height of `Current'.
			-- There is no need to grow `Current' if its size is
			-- too small, the parent will do it if necessary.

	set_minimum_size (mw, mh: INTEGER_32)
			-- Make `mw' the new minimum_width and `mh' the new
			-- minimum_height of `Current'.

	set_minimum_width (value: INTEGER_32)
			-- Make `value' the new minimum_width of `Current'.
			-- There is no need to grow `Current' if its size is
			-- too small, the parent will do it if necessary.

	set_size (w, h: INTEGER_32)
			-- Resize `Current'.

	set_width (value: INTEGER_32)
			-- Make `value' the new width of `Current'.
	
feature -- Duplication

	copy (other: like Current)
			-- Update current object using fields of object attached
			-- to `other', so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: is_equal (other)

	frozen deep_copy (other: like Current)
			-- Effect equivalent to that of:
			--		copy (`other' . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: like Current
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: like Current)
			-- Copy every field of `other' onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: like Current
			-- New object field-by-field identical to `other'.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: like Current
			-- New object equal to `Current'
			-- twin calls copy; to change copying/twining semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result.is_equal (Current)
	
feature -- Basic operations

	frozen default: like Current
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type `POINTER'
			-- (Avoid the need to write `p'.default for
			-- some `p' of type `POINTER'.)
			-- (from ANY)

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
	
feature -- Obsolete

	nc_minheight: INTEGER_32 is 2
			-- Used only in the `notify_change' feature to
			-- notify the parent that the minimum height of
			-- `Current' has changed.

	nc_minsize: INTEGER_32 is 3
			-- Used only in the `notify_change' feature to
			-- notify the parent that both the minimum width
			-- and height of `Current' widget have changed.

	nc_minwidth: INTEGER_32 is 1
			-- Used only in the `notify_change' feature to
			-- notify the parent that the minimum width of
			-- `Current' has changed.
	
feature -- Basic operation

	internal_set_minimum_height (value: INTEGER_32)
			-- Make `value' the new minimum_height of `Current'.
			-- Should check if the user didn't set the minimum width
			-- before to set the new value.
		require
			positive_value: value >= 0

	internal_set_minimum_size (mw, mh: INTEGER_32)
			-- Make `mw' the new minimum_width and `mh' the new
			-- minimum_height of `Current'.
			-- Should check if the user didn't set the minimum width
			-- before to set the new value.
		require
			positive_mw: mw >= 0
			positive_mh: mh >= 0

	internal_set_minimum_width (value: INTEGER_32)
			-- Make `value' the new minimum_width of `Current'.
			-- Should check if the user didn't set the minimum width
			-- before to set the new value.
		require
			positive_value: value >= 0

	internal_set_size (mw, mh: INTEGER_32)
			-- Set `size' of child_cell.
		require
			positive_mw: mw >= 0
			positive_mh: mh >= 0

	parent_ask_resize (a_width, a_height: INTEGER_32)
			-- Called by the parent when the size of `Current' has to be
			-- changed to `a_width', `a_height'.

	set_move_and_size (a_x_position, a_y_position, a_width, a_height: INTEGER_32)
			-- Move and resize the widget. Only the parent can call this feature
			-- because it doesn't notify the parent of the change.
			-- Equivalent of parent_ask_resize with move.
	
feature -- Output

	io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of tagged_out.
			-- (from ANY)

	print (some: ANY)
			-- Write terse external representation of `some'
			-- on standard output.
			-- (from ANY)

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of out.
			-- (from ANY)
	
feature -- Platform

	operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
	
feature -- Position

	set_position (new_x_position: INTEGER_32; new_y_position: INTEGER_32)
			-- Put at horizontal position `new_x_position' and at
			-- vertical position `new_y_position' relative to parent.
	
invariant
		-- from EV_ANY_I
	interface_coupled: is_usable implies interface /= Void and then interface.implementation = Current
	base_make_called: base_make_called

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

indexing
	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 -- class EV_SIZEABLE_IMP