indexing
	description: "Graphic objects representing a database table attribute."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2006-01-22 18:25:44 -0800 (Sun, 22 Jan 2006) $"
	revision: "$Revision: 56675 $"

class interface
	DV_TABLEROW_FIELD

create 
	make_with_code (code: INTEGER_32)
			-- Initialize with `code' to
			-- locate table attribute in the database.

feature -- Initialization

	make_with_code (code: INTEGER_32)
			-- Initialize with `code' to
			-- locate table attribute in the database.
	
feature -- Access

	attribute_code: INTEGER_32
			-- Code of the represented attribute in the
			-- database table.

	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)

	graphical_title: DV_SENSITIVE_STRING
			-- Graphical element holding field title.

	graphical_type: DV_SENSITIVE_STRING
			-- Graphical element holding field type.

	graphical_value: DV_SENSITIVE_STRING
			-- Graphical element holding field value.

	table_description: DB_TABLE_DESCRIPTION
			-- Description of the database table containing
			-- the represented attribute.

	text: STRING_8
			-- Field text.
		ensure
			result_not_void: Result /= Void
	
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

	can_be_activated: BOOLEAN
			-- Can the component be activated?

	can_update: BOOLEAN
			-- Can value held be updated?

	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

	graphical_title_set: BOOLEAN
			-- Is a graphical title set?

	graphical_type_set: BOOLEAN
			-- Is a graphical type set?

	graphical_value_set: BOOLEAN
			-- Is a graphical value set?

	has_changed: BOOLEAN
			-- Has the user changed the field content?

	is_activated: BOOLEAN
			-- Is component activated?

	is_boolean: BOOLEAN
			-- Is the attribute a boolean value?

	is_character: BOOLEAN
			-- Is the attribute a character value?

	is_cleared: BOOLEAN
			-- Has the field been cleared?

	is_date: BOOLEAN
			-- Is the attribute a date only value?

	is_datetime: BOOLEAN
			-- Is the attribute a date & time value?

	is_double: BOOLEAN
			-- Is the attribute a double value?

	is_integer: BOOLEAN
			-- Is the attribute an integer value?

	is_real: BOOLEAN
			-- Is the attribute a date & time value?

	is_string: BOOLEAN
			-- Is the attribute a date & time value?

	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))

	use_redirection: BOOLEAN
			-- Is the display a redirection from the attribute? 
	
feature -- Status setting

	set_is_date
			-- Field must contain a date value.
		require
			is_datetime: is_datetime
		ensure
			is_datetime: is_datetime
			is_date: is_date
	
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)

	set_graphical_title (g_title: DV_SENSITIVE_STRING)
			-- Set graphical title to `g_title'.
		require
			not_activated: not is_activated
			not_void: g_title /= Void

	set_graphical_type (g_type: DV_SENSITIVE_STRING)
			-- Set graphical type to `g_type'.
		require
			not_activated: not is_activated
			not_void: g_type /= Void

	set_graphical_value (g_value: DV_SENSITIVE_STRING)
			-- Set graphical value to `g_value'.
		require
			not_activated: not is_activated
			not_void: g_value /= Void

	set_redirector (a_redirector: DV_VALUE_REDIRECTOR)
			-- Set redirector to redirect an integer to the associated string.
		require
			not_activated: not is_activated

	set_title (t: STRING_8)
			-- Set component `title' to `t'.
		require
			not_activated: not is_activated
			graphical_title_set: graphical_title_set

	set_type (t: STRING_8)
			-- Set component `type' to `t'.
		require
			not_activated: not is_activated
			graphical_type_set: graphical_type_set
	
feature --

	enter_field_value (type, name: STRING_8): STRING_8
			-- Value of field with `name' and `type' not valid message.
			-- (from DV_MESSAGES)

	retrieve_field_value (type, name: STRING_8): STRING_8
			-- Value of field with `name' and `type' retrieval failure message.
			-- (from DV_MESSAGES)

	type_not_recognized (name: STRING_8): STRING_8
			-- Type of field with `name' not recognized message.
			-- (from DV_MESSAGES)

	wrong_date_format (name: STRING_8): STRING_8
			-- Wrong date type format for field with `name' message.
			-- (from DV_MESSAGES)

	wrong_datetime_format (name: STRING_8): STRING_8
			-- Wrong date & time type format for field with `name' message.
			-- (from DV_MESSAGES)
	
feature -- Combo box

	empty_combo_item_label: STRING_8
			-- Label for an empty combo item value.
			-- (from DV_MESSAGES)
	
feature -- Creation

	creation_confirmation (table_name: STRING_8): STRING_8
			-- Table row creation on `table_name' confirmation message.
			-- (from DV_MESSAGES)

	creation_done (table_name: STRING_8): STRING_8
			-- Table row creation on `table_name' successful message.
			-- (from DV_MESSAGES)
	
feature -- Deletion

	deletion_confirmation (table_name: STRING_8): STRING_8
			-- Table row deletion on `table_name' confirmation message.
			-- (from DV_MESSAGES)

	deletion_done (table_name: STRING_8): STRING_8
			-- Table row deletion on `table_name' successful message.
			-- (from DV_MESSAGES)
	
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 -- Selection

	tablerows_selected (count: INTEGER_32): STRING_8
			-- Database selection carried out message. `count' table rows
			-- have been selected.
			-- (from DV_MESSAGES)
	
feature -- Update

	update_done (table_name: STRING_8): STRING_8
			-- Table row update on `table_name' successful message.
			-- (from DV_MESSAGES)
	
feature -- Window to select foreign key values for creation

	selection_window_title (table_name: STRING_8): STRING_8
			-- Selection window title.
			-- (from DV_MESSAGES)

	undetermined_table_name: STRING_8
			-- Undetermined table name (use for selection_window_title).
			-- (from DV_MESSAGES)
	
invariant
		-- 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 DV_TABLEROW_FIELD