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note description: "EiffelVision file selection dialog, implementation interface." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2012-12-09 07:17:19 -0900 (Sun, 09 Dec 2012) $" revision: "$Revision: 90130 $" deferred class interface EV_FILE_DIALOG_I feature -- Access blocking_window: detachable EV_WINDOW -- Window this dialog is a transient for. -- (from EV_STANDARD_DIALOG_I) filter: STRING_32 -- Filter currently applied to file list. filters: ARRAYED_LIST [TUPLE [filter: READABLE_STRING_GENERAL; text: READABLE_STRING_GENERAL]] -- All filters currently applied to file list. -- First element represents the filter e.g "*.txt". -- Second element represents the displayed text -- e.g. "Text files (*.txt)". full_file_path: PATH -- Full path of currently selected file including path. generating_type: TYPE [detachable EV_FILE_DIALOG_I] -- 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 start_path: PATH -- Base directory where browsing will start. title: STRING_32 -- Title of dialog shown in title bar. -- (from EV_STANDARD_DIALOG_I) feature -- Measurement dpi: NATURAL_32 -- Window dpi. -- (from EV_POSITIONED_I) height: INTEGER_32 -- Vertical size in pixels. -- (from EV_POSITIONED_I) minimum_height: INTEGER_32 -- Minimum vertical size in pixels. -- (from EV_POSITIONED_I) minimum_width: INTEGER_32 -- Minimum horizontal size in pixels. -- (from EV_POSITIONED_I) screen_x: INTEGER_32 -- Horizontal offset relative to screen. -- (from EV_POSITIONED_I) screen_y: INTEGER_32 -- Vertical offset relative to screen. -- (from EV_POSITIONED_I) width: INTEGER_32 -- Horizontal size in pixels. -- (from EV_POSITIONED_I) x_position: INTEGER_32 -- Horizontal offset relative to parent x_position in pixels. -- (from EV_POSITIONED_I) y_position: INTEGER_32 -- Vertical offset relative to parent y_position in pixels. -- (from EV_POSITIONED_I) 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: EV_FILE_DIALOG_I): 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: EV_FILE_DIALOG_I): 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: EV_FILE_DIALOG_I): 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 is_destroyed: BOOLEAN -- Is Current no longer usable? -- (from EV_ANY_I) 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)) selected_button: detachable IMMUTABLE_STRING_32 -- Label of the last clicked button. -- (from EV_STANDARD_DIALOG_I) selected_filter_index: INTEGER_32 -- One based index of selected filter within filters, or -- zero if no filters set. ensure result_zero_when_no_filters: filters.is_empty implies Result = 0 valid_result_when_filters_set: not filters.is_empty implies Result >= 1 and Result <= filters.count feature -- Status setting hide -- Request that Current not be displayed even when its parent is. -- If successful, make is_show_requested False. -- (from EV_STANDARD_DIALOG_I) require -- from EV_STANDARD_DIALOG_I not_destroyed: not is_destroyed set_height (a_height: INTEGER_32) -- Set the vertical size to a_height. -- (from EV_POSITIONABLE_I) require -- from EV_POSITIONABLE_I a_height_positive_or_zero: a_height >= 0 ensure -- from EV_POSITIONABLE_I height_assigned: height = minimum_height or else height = a_height set_position (a_x, a_y: INTEGER_32) -- Set horizontal offset to parent to a_x. -- Set vertical offset to parent to a_y. -- (from EV_POSITIONABLE_I) ensure -- from EV_POSITIONABLE_I x_position_assigned: x_position = a_x y_position_assigned: y_position = a_y set_size (a_width, a_height: INTEGER_32) -- Set the horizontal size to a_width. -- Set the vertical size to a_height. -- (from EV_POSITIONABLE_I) require -- from EV_POSITIONABLE_I a_width_positive_or_zero: a_width >= 0 a_height_positive_or_zero: a_height >= 0 ensure -- from EV_POSITIONABLE_I width_assigned: width = minimum_width or else width = a_width height_assigned: height = minimum_height or else height = a_height set_title (a_title: READABLE_STRING_GENERAL) -- Set the title of the dialog. -- (from EV_STANDARD_DIALOG_I) require -- from EV_STANDARD_DIALOG_I a_title_not_void: a_title /= Void set_width (a_width: INTEGER_32) -- Set the horizontal size to a_width. -- (from EV_POSITIONABLE_I) require -- from EV_POSITIONABLE_I a_width_positive_or_zero: a_width >= 0 ensure -- from EV_POSITIONABLE_I width_assigned: width = minimum_width or else width = a_width set_x_position (a_x: INTEGER_32) -- Set horizontal offset to parent to a_x. -- (from EV_POSITIONABLE_I) ensure -- from EV_POSITIONABLE_I x_position_assigned: x_position = a_x set_y_position (a_y: INTEGER_32) -- Set vertical offset to parent to a_y. -- (from EV_POSITIONABLE_I) ensure -- from EV_POSITIONABLE_I y_position_assigned: y_position = a_y show_modal_to_window (a_window: EV_WINDOW) -- Show the dialog modal with respect to a_window. -- (from EV_STANDARD_DIALOG_I) feature -- Element change set_filter (a_filter: READABLE_STRING_GENERAL) -- Set a_filter as new filter. require a_filter_not_void: a_filter /= Void ensure assigned: filter.same_string_general (a_filter) set_full_file_path (a_path: PATH) -- Make a_path the selected file. require a_path_not_void: a_path /= Void set_start_path (a_path: PATH) -- Make a_path the base directory. require a_path_not_void: a_path /= Void ensure assigned: start_path ~ a_path feature -- Duplication copy (other: EV_FILE_DIALOG_I) -- 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: EV_FILE_DIALOG_I) -- 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: EV_FILE_DIALOG_I -- 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: EV_FILE_DIALOG_I) -- 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: EV_FILE_DIALOG_I -- 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: EV_FILE_DIALOG_I -- 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 EV_FILE_DIALOG_I -- 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 -- Button Texts Ev_abort: IMMUTABLE_STRING_32 -- Text displayed on "abort" buttons. -- (from EV_DIALOG_NAMES) Ev_cancel: IMMUTABLE_STRING_32 -- Text displayed on "cancel" buttons. -- (from EV_DIALOG_NAMES) Ev_ignore: IMMUTABLE_STRING_32 -- Text displayed on "ignore" buttons. -- (from EV_DIALOG_NAMES) Ev_no: IMMUTABLE_STRING_32 -- Text displayed on "no" buttons. -- (from EV_DIALOG_NAMES) Ev_ok: IMMUTABLE_STRING_32 -- Text displayed on "ok" buttons. -- (from EV_DIALOG_NAMES) Ev_open: IMMUTABLE_STRING_32 -- Text displayed on "open" buttons. -- (from EV_DIALOG_NAMES) Ev_print: IMMUTABLE_STRING_32 -- Text displayed on "print" buttons. -- (from EV_DIALOG_NAMES) Ev_retry: IMMUTABLE_STRING_32 -- Text displayed on "retry" buttons. -- (from EV_DIALOG_NAMES) Ev_save: IMMUTABLE_STRING_32 -- Text displayed on "save" buttons. -- (from EV_DIALOG_NAMES) Ev_yes: IMMUTABLE_STRING_32 -- Text displayed on "yes" buttons. -- (from EV_DIALOG_NAMES) feature -- Event handling cancel_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when user cancels. -- (from EV_STANDARD_DIALOG_ACTION_SEQUENCES_I) ensure -- from EV_STANDARD_DIALOG_ACTION_SEQUENCES_I not_void: Result /= Void ok_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when user clicks OK. -- (from EV_STANDARD_DIALOG_ACTION_SEQUENCES_I) ensure -- from EV_STANDARD_DIALOG_ACTION_SEQUENCES_I not_void: Result /= Void 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 -- Titles Ev_confirmation_dialog_title: IMMUTABLE_STRING_32 -- Title of EV_CONFIRMATION_DIALOG. -- (from EV_DIALOG_NAMES) Ev_error_dialog_title: IMMUTABLE_STRING_32 -- Title of EV_ERROR_DIALOG. -- (from EV_DIALOG_NAMES) Ev_information_dialog_title: IMMUTABLE_STRING_32 -- Title of EV_INFORMATION_DIALOG. -- (from EV_DIALOG_NAMES) Ev_question_dialog_title: IMMUTABLE_STRING_32 -- Title of EV_QUESTION_DIALOG. -- (from EV_DIALOG_NAMES) Ev_warning_dialog_title: IMMUTABLE_STRING_32 -- Title of EV_WARNING_DIALOG. -- (from EV_DIALOG_NAMES) invariant filters_not_void: filters /= Void -- from EV_ANY_I interface_coupled: is_usable implies interface /= Void and then attached_interface.implementation = Current base_make_called: is_usable implies base_make_called -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) -- from EV_POSITIONED_I minimum_width_positive_or_zero: is_usable implies minimum_width >= 0 minimum_height_positive_or_zero: is_usable implies minimum_height >= 0 note copyright: "Copyright (c) 1984-2012, 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 EV_FILE_DIALOG_I
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