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note description: "[ Default widget for viewing and editing ARRAY preferences for which there must be only one selected value. ]" legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2018-01-25 22:51:54 -0900 (Thu, 25 Jan 2018) $" revision: "$Revision: 101309 $" class interface CHOICE_PREFERENCE_WIDGET create make_with_preference (a_preference: like preference) -- Make with values from a_preference. -- (from PREFERENCE_WIDGET) require -- from PREFERENCE_WIDGET preference_not_void: a_preference /= Void ensure -- from PREFERENCE_WIDGET has_preference: preference /= Void feature -- Access caller: detachable PREFERENCE_VIEW -- (from PREFERENCE_WIDGET) note option: stable change_item_widget: EV_GRID_CHOICE_ITEM -- Widget to change the value of this preference. generating_type: TYPE [detachable CHOICE_PREFERENCE_WIDGET] -- 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 graphical_type: STRING_8 -- Graphical type identifier 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: CHOICE_PREFERENCE_WIDGET): 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: CHOICE_PREFERENCE_WIDGET): 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: CHOICE_PREFERENCE_WIDGET): 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: CHOICE_PREFERENCE_WIDGET) -- 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: CHOICE_PREFERENCE_WIDGET) -- 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: CHOICE_PREFERENCE_WIDGET -- 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: CHOICE_PREFERENCE_WIDGET) -- 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: CHOICE_PREFERENCE_WIDGET -- 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: CHOICE_PREFERENCE_WIDGET -- 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 CHOICE_PREFERENCE_WIDGET -- 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) destroy -- Destroy all graphical objects. -- (from PREFERENCE_WIDGET) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class set_caller (a_caller: attached like caller) -- Set the view this widget belongs to. -- (from PREFERENCE_WIDGET) require -- from PREFERENCE_WIDGET caller_not_void: a_caller /= Void ensure -- from PREFERENCE_WIDGET caller_set: caller = a_caller feature -- Implementation preference: ABSTRACT_CHOICE_PREFERENCE [ANY] -- Actual preference. feature -- Actions change_actions: ACTION_SEQUENCE -- Actions to be performed when preference changes, after call to update_changes. -- (from PREFERENCE_WIDGET) feature -- Command refresh -- Reset. update_changes -- Update the changes made in change_item_widget to preference. 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 feature -- Status Setting set_displayed_value (a_mapping: HASH_TABLE [STRING_32, READABLE_STRING_GENERAL]) -- Set values for display. -- If values are not found, original ones are displayed. set_preference (new_preference: like preference) -- Set the preference. require -- from PREFERENCE_WIDGET preference_not_void: new_preference /= Void require else preference_is_choice: attached {ABSTRACT_ARRAY_PREFERENCE [READABLE_STRING_GENERAL]} new_preference as ar implies ar.is_choice ensure -- from PREFERENCE_WIDGET preference_set: preference = new_preference show -- Show the widget in its editable state invariant -- from PREFERENCE_WIDGET has_widget: preference /= Void implies change_item_widget /= Void -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2018, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., 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 CHOICE_PREFERENCE_WIDGET
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