note
	description: "Every events that can happend on a GAME_WINDOW"
	author: "Louis Marchand"
	date: "Wed, 01 Apr 2015 19:04:20 +0000"
	revision: "2.0"

deferred class interface
	GAME_WINDOW_EVENTS

feature -- Access

	clear
			-- Remove all events.
		ensure -- from GAME_EVENTS
			running_unchanged: is_running = old is_running

	close_request_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When the Window manager request that Current be closed.
		require
			window_events_enabled: events_controller.is_window_event_enable

	events_controller: GAME_EVENTS_CONTROLLER
			-- Manage every internal events
			-- (from GAME_EVENTS)

	expose_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current is exposed and should be redraw.
		require
			window_events_enabled: events_controller.is_window_event_enable

	generating_type: TYPE [detachable GAME_WINDOW_EVENTS]
			-- Type of current object
			-- (type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generating_type_not_void: Result /= Void

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generator_not_void: Result /= Void
			generator_not_empty: not Result.is_empty

	has_error: BOOLEAN
			-- Is the library has generate an error
			-- (from GAME_ERROR_MANAGER)

	hide_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current is hide.
		require
			window_events_enabled: events_controller.is_window_event_enable

	is_running: BOOLEAN assign set_is_running
			-- Is Current active
			-- (from GAME_EVENTS)

	key_pressed_actions: ACTION_SEQUENCE [NATURAL_32, GAME_KEY_EVENT]
			-- When a key (represented by key_state) has been pressed.
		require
			key_released_events_enabled: events_controller.is_key_pressed_event_enable

	key_released_actions: ACTION_SEQUENCE [NATURAL_32, GAME_KEY_EVENT]
			-- When a key (represented by key_state) has been released.
		require
			key_released_events_enabled: events_controller.is_key_released_event_enable

	keyboard_focus_gain_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has gain keyboard focus.
		require
			window_events_enabled: events_controller.is_window_event_enable

	keyboard_focus_lost_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has lost keyboard focus.
		require
			window_events_enabled: events_controller.is_window_event_enable

	last_error: READABLE_STRING_GENERAL
			-- The last error generate by the library
			-- (from GAME_SDL_ANY)

	maximize_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has been maximized.
		require
			window_events_enabled: events_controller.is_window_event_enable

	minimize_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has been minimized.
		require
			window_events_enabled: events_controller.is_window_event_enable

	mouse_button_pressed_actions: ACTION_SEQUENCE [NATURAL_32, GAME_MOUSE_BUTTON_PRESS_EVENT, NATURAL_8]
			-- When a mouse represented by mouse_state has been pressed for the nb_clicks times
		require
			mouse_button_pressed_events_enabled: events_controller.is_mouse_button_pressed_event_enable

	mouse_button_released_actions: ACTION_SEQUENCE [NATURAL_32, GAME_MOUSE_BUTTON_RELEASE_EVENT, NATURAL_8]
			-- When a mouse represented by mouse_state has been released for the nb_clicks times
		require
			mouse_button_released_events_enabled: events_controller.is_mouse_button_released_event_enable

	mouse_enter_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has gained mouse focus.
		require
			window_events_enabled: events_controller.is_window_event_enable

	mouse_leave_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has lost mouse focus.
		require
			window_events_enabled: events_controller.is_window_event_enable

	mouse_motion_actions: ACTION_SEQUENCE [NATURAL_32, GAME_MOUSE_MOTION_EVENT, INTEGER_32, INTEGER_32]
			-- When a mouse represented by mouse_state has been moved in Current.
			-- The difference between the old position and the new (delta_x,delta_y)
		require
			mouse_motion_events_enabled: events_controller.is_mouse_motion_event_enable

	mouse_wheel_move_actions: ACTION_SEQUENCE [NATURAL_32, GAME_MOUSE_EVENT, INTEGER_32, INTEGER_32]
			-- When the wheel of a mouse represented by mouse_state has been moved.
			-- The difference between the old wheel position and the new one is (delta_x,delta_y)
			-- When delta_x is positive, the wheel has been move up, and when negative, it has been moved down
			-- When delta_y is positive, the wheel has been move right, and when negative, it has been moved left
		require
			mouse_wheel_move_events_enabled: events_controller.is_mouse_wheel_event_enable

	move_actions: ACTION_SEQUENCE [NATURAL_32, INTEGER_32, INTEGER_32]
			-- When Current has been moved to (x,y).
		require
			window_events_enabled: events_controller.is_window_event_enable

	resize_actions: ACTION_SEQUENCE [NATURAL_32, INTEGER_32, INTEGER_32]
			-- When Current has been resized by the user (external to the game library)
			-- to widthxheight. Always precceded by a size_change_actions events.
			-- Note: This event is not trigger by the GAME_WINDOW.set_size or GAME_WINDOW.set_full_screen
			-- Routines
		require
			window_events_enabled: events_controller.is_window_event_enable

	restore_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has been restored to normal size and position.
		require
			window_events_enabled: events_controller.is_window_event_enable

	run
			-- Put Current active.
		require -- from GAME_EVENTS
			run_not_already_running: not is_running
		ensure -- from GAME_EVENTS
			is_running: is_running

	set_is_running (a_value: BOOLEAN)
			-- Assign to is_running the value of a_value
			-- (from GAME_EVENTS)
		ensure -- from GAME_EVENTS
			is_assign: is_running ~ a_value

	show_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current is show.
		require
			window_events_enabled: events_controller.is_window_event_enable

	size_change_actions: ACTION_SEQUENCE [NATURAL_32]
			-- When Current has been resized.
			-- Note: Trigger when a user resize the window (external to the game library) or when a
			-- call to the GAME_WINDOW.set_size or GAME_WINDOW.set_full_screen routines has
			-- been use.
		require
			window_events_enabled: events_controller.is_window_event_enable

	stop
			-- Put Current innactive.
		require -- from GAME_EVENTS
			stop_is_running: is_running
		ensure -- from GAME_EVENTS
			is_stopped: not is_running

	text_editing_actions: ACTION_SEQUENCE [NATURAL_32, STRING_32, INTEGER_32, INTEGER_32]
			-- When a text has been edited in Current.

	text_input_actions: ACTION_SEQUENCE [NATURAL_32, STRING_32]
			-- When a new text has been entered in Current.
	
feature -- Comparison

	frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			shallow_implies_deep: standard_equal (a, b) implies Result
			both_or_none_void: (a = Void) implies (Result = (b = Void))
			same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b))
			symmetric: Result implies deep_equal (b, a)

	frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b))

	frozen is_deep_equal alias "≡≡≡" (other: GAME_WINDOW_EVENTS): BOOLEAN
			-- Are Current and other attached to isomorphic object structures?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			shallow_implies_deep: standard_is_equal (other) implies Result
			same_type: Result implies same_type (other)
			symmetric: Result implies other.is_deep_equal (Current)

	is_equal (other: GAME_WINDOW_EVENTS): 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 ~ Current
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b 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
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b))

	frozen standard_is_equal alias "" (other: GAME_WINDOW_EVENTS): 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 -- Duplication

	copy (other: GAME_WINDOW_EVENTS)
			-- 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: Current ~ other

	frozen deep_copy (other: GAME_WINDOW_EVENTS)
			-- 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: GAME_WINDOW_EVENTS
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_twin_not_void: Result /= Void
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: GAME_WINDOW_EVENTS)
			-- 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: GAME_WINDOW_EVENTS
			-- 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: GAME_WINDOW_EVENTS
			-- New object equal to Current
			-- twin calls copy; to change copying/twinning semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result ~ Current
	
feature -- Basic operations

	frozen default: detachable GAME_WINDOW_EVENTS
			-- 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)
		ensure -- from ANY
			instance_free: class

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

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
	
feature -- Output

	Io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			io_not_void: Result /= Void

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			out_not_void: Result /= Void

	print (o: detachable ANY)
			-- Write terse external representation of o
			-- on standard output.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			tagged_out_not_void: Result /= Void
	
feature -- Platform

	Operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			operating_environment_not_void: Result /= Void
	
invariant
		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

end -- class GAME_WINDOW_EVENTS

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