Automatic generation produced by ISE Eiffel
note description: "Objects that represent a header control for an EV_GRID" legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2009-06-03 16:11:49 -0800 (Wed, 03 Jun 2009) $" revision: "$Revision: 79073 $" class interface EV_GRID_HEADER create {EV_GRID_I} default_create -- Standard creation procedure. -- (from EV_ANY) require -- from ANY True ensure then -- from EV_ANY is_coupled: implementation /= Void is_initialized: is_initialized default_create_called: default_create_called is_in_default_state: is_in_default_state feature -- Access accept_cursor: EV_POINTER_STYLE -- Result is cursor displayed when the screen pointer is over a -- target that accepts `pebble` during pick and drop. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE result_not_void: Result /= Void ensure then -- from EV_PICK_AND_DROPABLE cursor_valid: (attached implementation.accept_cursor implies Result = implementation.accept_cursor) or else Result = Default_pixmaps.Standard_cursor actual_drop_target_agent: detachable FUNCTION [INTEGER_32, INTEGER_32, detachable EV_ABSTRACT_PICK_AND_DROPABLE] -- Overrides default drop target on a certain position. -- If Void, Current will use the default drop target. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.actual_drop_target_agent at alias "@" (i: INTEGER_32): like item assign dl_put_i_th -- Item at i-th position -- Was declared in {CHAIN} as synonym of `i_th`. -- (from CHAIN) require -- from TABLE valid_key: valid_index (i) background_color: EV_COLOR -- Color displayed behind foreground features. -- (from EV_COLORIZABLE) require -- from EV_COLORIZABLE not_destroyed: not is_destroyed ensure -- from EV_COLORIZABLE bridge_ok: Result.is_equal (implementation.background_color) configurable_target_menu_handler: detachable PROCEDURE [EV_MENU, ARRAYED_LIST [EV_PND_TARGET_DATA], EV_PICK_AND_DROPABLE, detachable ANY] -- Agent used for customizing the Pick and Drop Target Menu of Current. -- (from EV_PICK_AND_DROPABLE) cursor: EV_DYNAMIC_LIST_CURSOR [EV_HEADER_ITEM] -- Current cursor position. -- (from EV_DYNAMIC_LIST) require -- from CURSOR_STRUCTURE True ensure -- from CURSOR_STRUCTURE cursor_not_void: Result /= Void ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result.is_equal (implementation.cursor) data: detachable ANY -- Arbitrary user data may be stored here. -- (from EV_ANY) default_identifier_name: STRING_32 -- Default name if no other name is set. -- (from EV_IDENTIFIABLE) ensure -- from EV_IDENTIFIABLE result_not_void: Result /= Void result_not_empty: not Result.is_empty no_period_in_result: not Result.has ('.'.to_character_32) default_key_processing_handler: detachable PREDICATE [EV_KEY] assign set_default_key_processing_handler -- Agent used to determine whether the default key processing should occur for Current. -- If agent returns True then default key processing continues as normal, False prevents -- default key processing from occurring. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.default_key_processing_handler deny_cursor: EV_POINTER_STYLE -- Result is cursor displayed when the screen pointer is over a -- target that does not accept `pebble` during pick and drop. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE result_not_void: Result /= Void ensure then -- from EV_PICK_AND_DROPABLE cursor_valid: (attached implementation.deny_cursor implies Result = implementation.deny_cursor) or else Result = Default_pixmaps.No_cursor first: like item -- Item at first position -- (from CHAIN) require -- from CHAIN not_empty: not is_empty font: EV_FONT -- Typeface appearance for Current. -- (from EV_FONTABLE) require -- from EV_FONTABLE not_destroyed: not is_destroyed ensure -- from EV_FONTABLE not_void: Result /= Void bridge_ok: Result.is_equal (implementation.font) foreground_color: EV_COLOR -- Color of foreground features like text. -- (from EV_COLORIZABLE) require -- from EV_COLORIZABLE not_destroyed: not is_destroyed ensure -- from EV_COLORIZABLE bridge_ok: Result.is_equal (implementation.foreground_color) full_identifier_path: STRING_32 -- Full name of object by prepending path of parent -- Uses '.' as a separator. -- (from EV_IDENTIFIABLE) ensure -- from EV_IDENTIFIABLE result_not_void: Result /= Void result_correct: parent = Void implies Result.is_equal (identifier_name) result_correct: attached parent as l_parent implies Result.is_equal (l_parent.full_identifier_path + ".".as_string_32 + identifier_name) generating_type: TYPE [detachable EV_GRID_HEADER] -- 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 (v: like item): BOOLEAN -- Does chain include v? -- (Reference or object equality, -- based on `object_comparison`.) -- (from CHAIN) require -- from CONTAINER True ensure -- from CONTAINER not_found_in_empty: Result implies not is_empty help_context: detachable FUNCTION [EV_HELP_CONTEXT] -- Agent that evaluates to help context sent to help engine when help is requested -- (from EV_HELP_CONTEXTABLE) require -- from EV_HELP_CONTEXTABLE not_destroyed: not is_destroyed ensure -- from EV_HELP_CONTEXTABLE bridge_ok: Result = implementation.help_context i_th alias "[]" (i: INTEGER_32): like item -- Item at i-th position. -- (from EV_DYNAMIC_LIST) require -- from TABLE valid_key: valid_index (i) require -- from READABLE_INDEXABLE valid_index: valid_index (i) ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result.is_equal (implementation.i_th (i)) frozen id_object (an_id: INTEGER_32): detachable IDENTIFIED -- Object associated with an_id (void if no such object) -- (from IDENTIFIED) ensure -- from IDENTIFIED consistent: Result = Void or else Result.object_id = an_id identifier_name: STRING_32 -- Name of object -- If no specific name is set, `default_identifier_name` is used. -- (from EV_IDENTIFIABLE) ensure -- from EV_IDENTIFIABLE result_not_void: Result /= Void result_not_empty: not Result.is_empty no_period_in_result: not Result.has ('.'.to_character_32) default_name_available: not has_identifier_name_set implies Result.is_equal (default_identifier_name) index: INTEGER_32 -- Current position. -- (from EV_DYNAMIC_LIST) require -- from LINEAR True ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result = implementation.index index_of (v: like item; i: INTEGER_32): INTEGER_32 -- Index of ith occurrence of v. -- (from EV_DYNAMIC_LIST) require -- from LINEAR positive_occurrences: i > 0 ensure -- from LINEAR non_negative_result: Result >= 0 ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result = implementation.index_of (v, i) item: EV_HEADER_ITEM -- Item at current position. -- (from EV_DYNAMIC_LIST) require -- from ACTIVE readable: readable require -- from TRAVERSABLE not_off: not off ensure then -- from EV_DYNAMIC_LIST not_void: Result /= Void bridge_ok: Result.is_equal (implementation.item) item_for_iteration: EV_HEADER_ITEM -- Item at current position -- (from LINEAR) require -- from LINEAR not_off: not off item_pointer_button_press_actions: EV_LITE_ACTION_SEQUENCE [detachable EV_HEADER_ITEM, INTEGER_32, INTEGER_32, INTEGER_32] -- Actions to be performed when a mouse pointer is pressed on a header item. -- -- header_item: EV_HEADER_ITEM -- The header item the event occurred upon. -- x_pos: INTEGER -- The x position of the motion in grid virtual coordinates. -- y_pos: INTEGER -- The y position of the motion in grid virtual coordinates. -- button_number: INTEGER -- The mouse button number. -- (from EV_HEADER_ACTION_SEQUENCES) ensure -- from EV_HEADER_ACTION_SEQUENCES not_void: Result /= Void item_pointer_double_press_actions: EV_LITE_ACTION_SEQUENCE [detachable EV_HEADER_ITEM, INTEGER_32, INTEGER_32, INTEGER_32] -- Actions to be performed when a mouse pointer is double-pressed on a header item. -- -- header_item: EV_HEADER_ITEM -- The header item the event occurred upon. -- x_pos: INTEGER -- The x position of the motion in grid virtual coordinates. -- y_pos: INTEGER -- The y position of the motion in grid virtual coordinates. -- button_number: INTEGER -- The mouse button number. -- (from EV_HEADER_ACTION_SEQUENCES) ensure -- from EV_HEADER_ACTION_SEQUENCES not_void: Result /= Void item_resize_actions: EV_HEADER_ITEM_ACTION_SEQUENCE -- Actions to be performed as a header item is resized. -- (from EV_HEADER_ACTION_SEQUENCES) ensure -- from EV_HEADER_ACTION_SEQUENCES not_void: Result /= Void item_resize_end_actions: EV_HEADER_ITEM_ACTION_SEQUENCE -- Actions to be performed when resizing completes on a header item. -- (from EV_HEADER_ACTION_SEQUENCES) ensure -- from EV_HEADER_ACTION_SEQUENCES not_void: Result /= Void item_resize_start_actions: EV_HEADER_ITEM_ACTION_SEQUENCE -- Actions to be performed when resizing begins on a header item. -- (from EV_HEADER_ACTION_SEQUENCES) ensure -- from EV_HEADER_ACTION_SEQUENCES not_void: Result /= Void item_x_offset (an_item: EV_HEADER_ITEM): INTEGER_32 -- Result is x position of an_item in relation to Current. -- (from EV_HEADER) require -- from EV_HEADER not_is_destroyed: not is_destroyed has_an_item: has (an_item) ensure -- from EV_HEADER result_non_negative: Result >= 0 last: like item -- Item at last position -- (from CHAIN) require -- from CHAIN not_empty: not is_empty new_cursor: INDEXABLE_ITERATION_CURSOR [EV_HEADER_ITEM] -- Fresh cursor associated with current structure -- (from READABLE_INDEXABLE) require -- from ITERABLE True ensure -- from ITERABLE result_attached: Result /= Void frozen object_id: INTEGER_32 -- Unique for current object in any given session -- (from IDENTIFIED) ensure -- from IDENTIFIED valid_id: Result > 0 implies id_object (Result) = Current parent: detachable EV_CONTAINER -- Contains Current. -- (from EV_WIDGET) require -- from EV_IDENTIFIABLE not_destroyed: not is_destroyed ensure -- from EV_IDENTIFIABLE correct: has_parent implies Result /= Void correct: not has_parent implies Result = Void ensure then -- from EV_WIDGET bridge_ok: Result = implementation.parent pebble: detachable ANY -- Data to be transported by pick and drop mechanism. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.pebble pebble_function: detachable FUNCTION [detachable ANY] -- Returns data to be transported by pick and drop mechanism. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.pebble_function pebble_positioning_enabled: BOOLEAN -- If True then pick and drop start coordinates are -- `pebble_x_position`, `pebble_y_position`. -- If False then pick and drop start coordinates are -- the pointer coordinates. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.pebble_positioning_enabled pebble_x_position: INTEGER_32 -- Initial x position for pick and drop relative to Current. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.pebble_x_position pebble_y_position: INTEGER_32 -- Initial y position for pick and drop relative to Current. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.pebble_y_position pixmaps_height: INTEGER_32 -- Height of displayed pixmaps in the list. -- (from EV_ITEM_PIXMAP_SCALER) require -- from EV_ITEM_PIXMAP_SCALER not_destroyed: not is_destroyed ensure -- from EV_ITEM_PIXMAP_SCALER bridge_ok: Result = implementation.pixmaps_height pixmaps_width: INTEGER_32 -- Width of displayed pixmaps in the list. -- (from EV_ITEM_PIXMAP_SCALER) require -- from EV_ITEM_PIXMAP_SCALER not_destroyed: not is_destroyed ensure -- from EV_ITEM_PIXMAP_SCALER bridge_ok: Result = implementation.pixmaps_width pointed_divider_index: INTEGER_32 -- Index of divider currently beneath the mouse pointer, or -- 0 if none. -- (from EV_HEADER) require -- from EV_HEADER not_is_destroyed: not is_destroyed ensure -- from EV_HEADER result_non_negative: Result >= 0 pointer_position: EV_COORDINATE -- Position of the screen pointer relative to Current. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed is_show_requested: is_show_requested pointer_style: EV_POINTER_STYLE -- Cursor displayed when pointer is over this widget. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed real_target: detachable EV_DOCKABLE_TARGET -- Result is target used during a dockable transport if -- mouse pointer is above Current. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.real_target retrieve_item_by_data (some_data: ANY; should_compare_objects: BOOLEAN): detachable EV_HEADER_ITEM -- Result is first item in Current with data -- matching some_data. Compare objects if -- should_compare_objects otherwise compare references. -- (from EV_DYNAMIC_LIST) ensure -- from EV_DYNAMIC_LIST not_found_in_empty: Result /= Void implies not is_empty index_not_changed: old index = index retrieve_items_by_data (some_data: ANY; should_compare_objects: BOOLEAN): ARRAYED_LIST [EV_HEADER_ITEM] -- Result is all items in Current with data -- matching some_data. Compare objects if -- should_compare_objects otherwise compare references. -- (from EV_DYNAMIC_LIST) ensure -- from EV_DYNAMIC_LIST result_not_void: Result /= Void not_found_in_empty: not Result.is_empty implies not is_empty index_not_changed: old index = index target_data_function: detachable FUNCTION [like pebble, EV_PND_TARGET_DATA] -- Function for computing target meta data based on source pebble. -- Primarily used for Pick and Drop target menu. -- (from EV_ABSTRACT_PICK_AND_DROPABLE) note option: stable target_name: detachable READABLE_STRING_GENERAL -- Optional textual name describing Current pick and drop hole. -- (from EV_ABSTRACT_PICK_AND_DROPABLE) note option: stable tooltip: STRING_32 -- Tooltip displayed on Current. -- If Result is empty then no tooltip displayed. -- (from EV_TOOLTIPABLE) require -- from EV_TOOLTIPABLE not_destroyed: not is_destroyed ensure -- from EV_TOOLTIPABLE bridge_ok: is_bridge_ok (Result) not_void: Result /= Void cloned: is_cloned (Result) feature -- Measurement count: INTEGER_32 -- Number of items. -- (from EV_DYNAMIC_LIST) require -- from FINITE True require -- from READABLE_INDEXABLE True ensure -- from FINITE count_non_negative: Result >= 0 ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result = implementation.count dpi: NATURAL_32 -- Window dpi -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED positive_or_zero: Result >= 0 height: INTEGER_32 -- Vertical size in pixels. -- Same as `minimum_height` when not displayed. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.height Lower: INTEGER_32 = 1 -- Minimum index. -- (from CHAIN) minimum_height: INTEGER_32 -- Lower bound on `height` in pixels. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.minimum_height positive_or_zero: Result >= 0 minimum_width: INTEGER_32 -- Lower bound on `width` in pixels. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.minimum_width positive_or_zero: Result >= 0 occurrences (v: like item): INTEGER_32 -- Number of times v appears. -- (Reference or object equality, -- based on `object_comparison`.) -- (from CHAIN) require -- from BAG True require -- from LINEAR True ensure -- from BAG non_negative_occurrences: Result >= 0 screen_x: INTEGER_32 -- Horizontal offset relative to screen. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.screen_x screen_y: INTEGER_32 -- Vertical offset relative to screen. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.screen_y width: INTEGER_32 -- Horizontal size in pixels. -- Same as `minimum_width` when not displayed. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.width x_position: INTEGER_32 -- Horizontal offset relative to parent `x_position` in pixels. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.x_position y_position: INTEGER_32 -- Vertical offset relative to parent `y_position` in pixels. -- (from EV_POSITIONED) require -- from EV_POSITIONED not_destroyed: not is_destroyed ensure -- from EV_POSITIONED bridge_ok: Result = implementation.y_position 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_GRID_HEADER): 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_GRID_HEADER): BOOLEAN -- Does other contain the same elements? -- (from LIST) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result ensure then -- from LIST indices_unchanged: index = old index and other.index = old other.index true_implies_same_size: Result implies count = other.count 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_GRID_HEADER): 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 after: BOOLEAN -- Is there no valid cursor position to the right of cursor? -- (from LIST) require -- from LINEAR True before: BOOLEAN -- Is there no valid cursor position to the left of cursor? -- (from LIST) require -- from BILINEAR True 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 debug_output: STRING_32 -- String that should be displayed in debugger to represent Current. -- (from EV_IDENTIFIABLE) ensure -- from DEBUG_OUTPUT result_not_void: Result /= Void exhausted: BOOLEAN -- Has structure been completely explored? -- (from LINEAR) ensure -- from LINEAR exhausted_when_off: off implies Result extendible: BOOLEAN -- May new items be added? (Answer: yes.) -- (from DYNAMIC_CHAIN) require -- from COLLECTION True Full: BOOLEAN = False -- Is structured filled to capacity? (Answer: no.) -- (from EV_DYNAMIC_LIST) has_capture: BOOLEAN -- Does widget have capture? -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.has_capture has_focus: BOOLEAN -- Does widget have the keyboard focus? -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.has_focus has_identifier_name_set: BOOLEAN -- Is a specific identifier name set? -- (from EV_IDENTIFIABLE) has_parent: BOOLEAN -- Does identifiable has a parent? -- (from EV_IDENTIFIABLE) frozen id_freed: BOOLEAN -- Has Current been removed from the table? -- (from IDENTIFIED) is_displayed: BOOLEAN -- Is Current visible on the screen? -- True when show requested and parent displayed. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.is_displayed is_dockable: BOOLEAN -- Is Current dockable? -- If True, then Current may be dragged -- from its current parent. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE bridge_ok: Result = implementation.is_dockable is_empty: BOOLEAN -- Is structure empty? -- (from FINITE) require -- from CONTAINER True is_external_docking_enabled: BOOLEAN -- Is Current able to be docked into an EV_DOCKABLE_DIALOG -- When there is no valid EV_DRAGABLE_TARGET upon completion -- of transport? -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE bridge_ok: Result = implementation.is_external_docking_enabled is_external_docking_relative: BOOLEAN -- Will dockable dialog displayed when Current is docked externally -- be displayed relative to parent window of Current? -- Otherwise displayed as a standard window. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE bridge_ok: Result = implementation.is_external_docking_relative is_inserted (v: EV_HEADER_ITEM): BOOLEAN -- Has v been inserted by the most recent insertion? -- (By default, the value returned is equivalent to calling -- has (v). However, descendants might be able to provide more -- efficient implementations.) -- (from COLLECTION) is_sensitive: BOOLEAN -- Is object sensitive to user input. -- (from EV_SENSITIVE) require -- from EV_SENSITIVE not_destroyed: not is_destroyed ensure -- from EV_SENSITIVE bridge_ok: Result = implementation.user_is_sensitive is_show_requested: BOOLEAN -- Will Current be displayed when its parent is? -- See also `is_displayed`. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET bridge_ok: Result = implementation.is_show_requested is_tabable_from: BOOLEAN -- Is Current able to be tabbed from? -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed is_tabable_to: BOOLEAN -- Is Current able to be tabbed to? -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed isfirst: BOOLEAN -- Is cursor at first position? -- (from CHAIN) ensure -- from CHAIN valid_position: Result implies not is_empty islast: BOOLEAN -- Is cursor at last position? -- (from CHAIN) ensure -- from CHAIN valid_position: Result implies not is_empty mode_is_configurable_target_menu: BOOLEAN -- Is the user interface mode a configurable pop-up menu of targets? -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.mode_is_configurable_target_menu mode_is_drag_and_drop: BOOLEAN -- Is the user interface mode drag and drop? -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.mode_is_drag_and_drop mode_is_pick_and_drop: BOOLEAN -- Is the user interface mode pick and drop? -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.mode_is_pick_and_drop mode_is_target_menu: BOOLEAN -- Is the user interface mode a pop-up menu of targets? -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure then -- from EV_PICK_AND_DROPABLE bridge_ok: Result = implementation.mode_is_target_menu object_comparison: BOOLEAN -- Must search operations use `equal` rather than = -- for comparing references? (Default: no, use =.) -- (from CONTAINER) off: BOOLEAN -- Is there no current item? -- (from CHAIN) require -- from TRAVERSABLE True prunable: BOOLEAN -- May items be removed? (Answer: yes.) -- (from DYNAMIC_TABLE) require -- from COLLECTION True readable: BOOLEAN -- Is there a current item that may be read? -- (from SEQUENCE) require -- from ACTIVE True real_source: detachable EV_DOCKABLE_SOURCE -- Result is source to be dragged -- when a docking drag occurs on Current. -- If Void, Current is dragged. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE bridge_ok: Result = implementation.real_source replaceable: BOOLEAN -- Can current item be replaced? -- (from ACTIVE) 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)) set_pixmaps_size (a_width: INTEGER_32; a_height: INTEGER_32) -- Set size of pixmaps disaplyed in Current. -- Note: Default value is 16x16 -- (from EV_ITEM_PIXMAP_SCALER) require -- from EV_ITEM_PIXMAP_SCALER not_destroyed: not is_destroyed valid_width: a_width > 0 valid_height: a_height > 0 ensure -- from EV_ITEM_PIXMAP_SCALER width_set: pixmaps_width = a_width height_set: pixmaps_height = a_height valid_cursor (p: CURSOR): BOOLEAN -- Can the cursor be moved to position p? -- This is True if p conforms to EV_DYNAMIC_LIST_CURSOR and -- if it points to an item, Current must have it. -- (from EV_DYNAMIC_LIST) require -- from CURSOR_STRUCTURE True ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result = implementation.valid_cursor (p) valid_cursor_index (i: INTEGER_32): BOOLEAN -- Is i correctly bounded for cursor movement? -- (from CHAIN) ensure -- from CHAIN valid_cursor_index_definition: Result = ((i >= 0) and (i <= count + 1)) valid_index (i: INTEGER_32): BOOLEAN -- Is i within allowable bounds? -- (from CHAIN) require -- from READABLE_INDEXABLE True require -- from TABLE True ensure -- from READABLE_INDEXABLE only_if_in_index_set: Result implies (Lower <= i and i <= count) ensure then -- from CHAIN valid_index_definition: Result = ((i >= 1) and (i <= count)) writable: BOOLEAN -- Is there a current item that may be modified? -- (from SEQUENCE) require -- from ACTIVE True feature -- Status setting center_pointer -- Position screen pointer over center of Current. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed compare_objects -- Ensure that future search operations will use `equal` -- rather than = for comparing references. -- (from CONTAINER) require -- from CONTAINER changeable_comparison_criterion: Changeable_comparison_criterion ensure -- from CONTAINER object_comparison compare_references -- Ensure that future search operations will use = -- rather than `equal` for comparing references. -- (from CONTAINER) require -- from CONTAINER changeable_comparison_criterion: Changeable_comparison_criterion ensure -- from CONTAINER reference_comparison: not object_comparison disable_capture -- Disable grab of all user input events. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET not_has_capture: not has_capture disable_dockable -- Ensure Current is not dockable. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE not_is_dockable: not is_dockable disable_external_docking -- Assign False to `is_external_docking_enabled`. -- Forbid Current to be docked into an EV_DOCKABLE_DIALOG -- When there is no valid EV_DRAGABLE_TARGET upon completion -- of transport. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed is_dockable: is_dockable ensure -- from EV_DOCKABLE_SOURCE not_externally_dockable: not is_external_docking_enabled disable_external_docking_relative -- Assign False to `is_external_docking_relative`, ensuring that -- a dockable dialog displayed when Current is docked externally -- is displayed as a standard window. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed external_docking_enabled: is_external_docking_enabled ensure -- from EV_DOCKABLE_SOURCE external_docking_not_relative: not is_external_docking_relative disable_pebble_positioning -- Assign False to `pebble_positioning_enabled`. -- The pick and drop will start at the pointer position. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE pebble_positioning_updated: not pebble_positioning_enabled disable_sensitive -- Make object non-sensitive to user input. -- (from EV_SENSITIVE) require -- from EV_SENSITIVE not_destroyed: not is_destroyed ensure -- from EV_SENSITIVE is_unsensitive: not is_sensitive disable_tabable_from -- Make `is_tabable_from` False. -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed ensure -- from EV_TAB_CONTROLABLE not_is_tabable_from: not is_tabable_from disable_tabable_to -- Make `is_tabable_to` False. -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed ensure -- from EV_TAB_CONTROLABLE not_is_tabable_to: not is_tabable_to enable_capture -- Grab all user input events (mouse and keyboard). -- `disable_capture` must be called to resume normal input handling. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed is_displayed: is_displayed ensure -- from EV_WIDGET has_capture: has_capture enable_dockable -- Ensure Current is dockable. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE is_dockable: is_dockable enable_external_docking -- Assign True to `is_external_docking_enabled`. -- Allows Current to be docked into an EV_DOCKABLE_DIALOG -- When there is no valid EV_DRAGABLE_TARGET upon completion -- of transport. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed is_dockable: is_dockable ensure -- from EV_DOCKABLE_SOURCE is_externally_dockable: is_external_docking_enabled enable_external_docking_relative -- Assign True to `is_external_docking_relative`, ensuring that -- a dockable dialog displayed when Current is docked externally -- is displayed relative to the top level window. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed external_docking_enabled: is_external_docking_enabled ensure -- from EV_DOCKABLE_SOURCE external_docking_not_relative: is_external_docking_relative enable_pebble_positioning -- Assign True to `pebble_positioning_enabled`. -- Use `pebble_x_position` and `pebble_y_position` as the initial coordinates -- for the pick and drop in pixels relative to Current. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE pebble_positioning_updated: pebble_positioning_enabled enable_sensitive -- Make object sensitive to user input. -- (from EV_SENSITIVE) require -- from EV_SENSITIVE not_destroyed: not is_destroyed ensure -- from EV_SENSITIVE is_sensitive: (parent = Void or parent_is_sensitive) implies is_sensitive enable_tabable_from -- Make `is_tabable_from` True. -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed ensure -- from EV_TAB_CONTROLABLE is_tabable_from: is_tabable_from enable_tabable_to -- Make `is_tabable_to` True. -- (from EV_TAB_CONTROLABLE) require -- from EV_TAB_CONTROLABLE not_destroyed: not is_destroyed ensure -- from EV_TAB_CONTROLABLE is_tabable_to: is_tabable_to hide -- Request that Current not be displayed even when its parent is. -- If successful, make `is_show_requested` False. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed remove_default_key_processing_handler -- Ensure `default_key_processing_handler` is Void. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed remove_pebble -- Make `pebble` Void and `pebble_function` `Void, -- Removing transport. -- (from EV_PICK_AND_DROPABLE) ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE pebble_removed: pebble = Void and pebble_function = Void remove_real_source -- Ensure `real_source` is Void. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_SOURCE real_source_void: real_source = Void remove_real_target -- Ensure `real_target` is Void. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed ensure -- from EV_WIDGET real_target_void: real_target = Void set_accept_cursor (a_cursor: detachable like accept_cursor) -- Set a_cursor to be displayed when the screen pointer is over a -- target that accepts `pebble` during pick and drop. -- (from EV_PICK_AND_DROPABLE) ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE accept_cursor_assigned: attached a_cursor as l_accept_cursor implies l_accept_cursor ~ accept_cursor set_actual_drop_target_agent (an_agent: like actual_drop_target_agent) -- Assign an_agent to `actual_drop_target_agent`. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed an_agent_not_void: an_agent /= Void ensure -- from EV_WIDGET assigned: actual_drop_target_agent = an_agent set_configurable_target_menu_handler (a_handler: detachable PROCEDURE [EV_MENU, ARRAYED_LIST [EV_PND_TARGET_DATA], EV_PICK_AND_DROPABLE, detachable ANY]) -- Set Configurable Target Menu Handler to a_handler. -- (from EV_PICK_AND_DROPABLE) ensure -- from EV_PICK_AND_DROPABLE configurable_target_menu_hander_assigned: configurable_target_menu_handler = a_handler set_configurable_target_menu_mode -- Set user interface mode to pop-up menu of targets. -- Target menu is configurable as the first option can be used to -- initiate a regular 'pick and drop' of the source pebble. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE target_menu_mode_set: mode_is_configurable_target_menu set_default_colors -- Set foreground and background color to their default values. -- (from EV_COLORIZABLE) require -- from EV_COLORIZABLE not_destroyed: not is_destroyed set_default_key_processing_handler (a_handler: like default_key_processing_handler) -- Assign `default_key_processing_handler` to a_handler. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed set_deny_cursor (a_cursor: detachable like deny_cursor) -- Set a_cursor to be displayed when the screen pointer is not -- over a valid target. -- (from EV_PICK_AND_DROPABLE) ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE deny_cursor_assigned: attached a_cursor as l_deny_cursor implies l_deny_cursor ~ deny_cursor set_drag_and_drop_mode -- Set user interface mode to drag and drop. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE drag_and_drop_set: mode_is_drag_and_drop set_focus -- Grab keyboard focus if `is_displayed`. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed is_sensitive: is_sensitive set_pebble (a_pebble: ANY) -- Assign a_pebble to `pebble`. -- Overrides `set_pebble_function`. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE a_pebble_not_void: a_pebble /= Void ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE pebble_assigned: pebble = a_pebble set_pebble_function (a_function: FUNCTION [detachable ANY]) -- Set a_function to compute `pebble`. -- It will be called once each time a pick occurs, the result -- will be assigned to `pebble` for the duration of transport. -- When a pick occurs, the pick position in widget coordinates, -- <<x, y>> in pixels, is passed. -- To handle this data use a_function of type -- FUNCTION [ANY, TUPLE [INTEGER, INTEGER], ANY] and return the -- pebble as a function of x and y. -- Overrides `set_pebble`. -- (from EV_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE a_function_not_void: a_function /= Void a_function_takes_two_integer_open_operands: a_function.valid_operands ([1, 1]) ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE pebble_function_assigned: pebble_function = a_function set_pebble_position (a_x, a_y: INTEGER_32) -- Set the initial position for pick and drop -- Coordinates are in pixels and are relative to position of Current. -- Pebble_positioning_enabled must be True for the position to be used, -- use enable_pebble_positioning. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE pebble_position_assigned: pebble_x_position = a_x and pebble_y_position = a_y set_pick_and_drop_mode -- Set user interface mode to pick and drop. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE pick_and_drop_set: mode_is_pick_and_drop set_real_source (dockable_source: EV_DOCKABLE_SOURCE) -- Assign dockable_source to `real_source`. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed is_dockable: is_dockable dockable_source_not_void: dockable_source /= Void dockable_source_is_parent_recursive: source_has_current_recursive (dockable_source) ensure -- from EV_DOCKABLE_SOURCE real_source_assigned: real_source = dockable_source set_real_target (a_target: EV_DOCKABLE_TARGET) -- Assign a_target to `real_target`. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed target_not_void: a_target /= Void ensure -- from EV_WIDGET assigned: real_target = a_target set_target_data_function (a_function: FUNCTION [like pebble, EV_PND_TARGET_DATA]) -- Set a_function to compute target meta data based on transport source. -- Overrides any `target_name` set with `set_target_name`. -- (from EV_ABSTRACT_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE a_function_not_void: a_function /= Void ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE target_data_function_assigned: target_data_function /= Void and then target_data_function.is_equal (a_function) set_target_menu_mode -- Set user interface mode to pop-up menu of targets. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed ensure -- from EV_PICK_AND_DROPABLE target_menu_mode_set: mode_is_target_menu set_target_name (a_name: READABLE_STRING_GENERAL) -- Assign a_name to `target_name`. -- (from EV_ABSTRACT_PICK_AND_DROPABLE) require -- from EV_ABSTRACT_PICK_AND_DROPABLE a_name_not_void: a_name /= Void ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE target_name_assigned: attached target_name as l_target_name and then a_name /= l_target_name and then a_name.same_string (l_target_name) show -- Request that Current be displayed when its parent is. -- True by default. -- If successful, make `is_show_requested` True. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed show_configurable_target_menu (a_x, a_y: INTEGER_32) -- Show the configurable target menu at position a_x, a_y relative to Current. -- (from EV_PICK_AND_DROPABLE) require -- from EV_PICK_AND_DROPABLE not_destroyed: not is_destroyed mode_is_configurable_target_menu: mode_is_configurable_target_menu configurable_menu_handler_set: configurable_target_menu_handler /= Void feature -- Cursor movement back -- Move to previous position. -- (from EV_DYNAMIC_LIST) require -- from BILINEAR not_before: not before finish -- Move cursor to last position. -- (No effect if empty) -- (from CHAIN) require -- from LINEAR True ensure then -- from CHAIN at_last: not is_empty implies islast forth -- Move cursor to next position. -- (from EV_DYNAMIC_LIST) require -- from LINEAR not_after: not after ensure then -- from LIST moved_forth: index = old index + 1 go_i_th (i: INTEGER_32) -- Move cursor to i-th position. -- (from EV_DYNAMIC_LIST) require -- from CHAIN valid_cursor_index: valid_cursor_index (i) ensure -- from CHAIN position_expected: index = i go_to (p: CURSOR) -- Move cursor to position p. -- (from EV_DYNAMIC_LIST) require -- from CURSOR_STRUCTURE cursor_position_valid: valid_cursor (p) move (i: INTEGER_32) -- Move cursor i positions. -- (from EV_DYNAMIC_LIST) ensure -- from CHAIN too_far_right: (old index + i > count) implies exhausted too_far_left: (old index + i < 1) implies exhausted expected_index: (not exhausted) implies (index = old index + i) search (v: like item) -- Move to first position (at or after current -- position) where `item` and v are equal. -- If structure does not include v ensure that -- `exhausted` will be true. -- (Reference or object equality, -- based on `object_comparison`.) -- (from BILINEAR) ensure -- from LINEAR object_found: (not exhausted and object_comparison) implies v ~ item item_found: (not exhausted and not object_comparison) implies v = item start -- Move cursor to first position. -- (from EV_DYNAMIC_LIST) require -- from TRAVERSABLE True ensure then -- from CHAIN at_first: not is_empty implies isfirst ensure then -- from EV_DYNAMIC_LIST empty_implies_after: is_empty implies after feature -- Element change append (s: SEQUENCE [like item]) -- Append a copy of s. Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible sequence_not_void: s /= Void sequence_not_current: s /= Current not_parented: not s.there_exists (agent (v: like item): BOOLEAN ) ensure -- from EV_DYNAMIC_LIST count_increased: old count + s.count = count cursor_not_moved: (index = old index) or (after and old after) extend (v: like item) -- Add v to end. Do not move cursor. -- Was declared in {EV_DYNAMIC_LIST} as synonym of `force`. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_is_last: v = last count_increased: count = old count + 1 cursor_not_moved: (index = old index) or (after and old after) fill (other: CONTAINER [EV_HEADER_ITEM]) -- Fill with as many items of other as possible. -- The representations of other and current structure -- need not be the same. -- (from CHAIN) require -- from COLLECTION other_not_void: other /= Void extendible: extendible force (v: like item) -- Add v to end. Do not move cursor. -- Was declared in {EV_DYNAMIC_LIST} as synonym of `extend`. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_is_last: v = last count_increased: count = old count + 1 cursor_not_moved: (index = old index) or (after and old after) dl_force (v: like item) -- Add v to end. -- (from SEQUENCE) require -- from SEQUENCE extendible: extendible ensure then -- from SEQUENCE new_count: count = old count + 1 item_inserted: has (v) merge_left (other: EV_GRID_HEADER) -- Merge other into current structure before cursor -- position. Do not move cursor. Empty other. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN extendible: extendible not_before: not before other_exists: other /= Void not_current: other /= Current ensure -- from DYNAMIC_CHAIN new_count: count = old count + old other.count new_index: index = old index + old other.count other_is_empty: other.is_empty merge_right (other: EV_GRID_HEADER) -- Merge other into current structure after cursor -- position. Do not move cursor. Empty other. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN extendible: extendible not_after: not after other_exists: other /= Void not_current: other /= Current ensure -- from DYNAMIC_CHAIN new_count: count = old count + old other.count same_index: index = old index other_is_empty: other.is_empty put (v: like item) -- Replace current item by v. -- (Synonym for `replace`) -- (from CHAIN) require -- from CHAIN writeable: writable replaceable: replaceable ensure -- from CHAIN same_count: count = old count is_inserted: is_inserted (v) sequence_put (v: like item) -- Add v to end. -- (from SEQUENCE) require -- from COLLECTION extendible: extendible ensure -- from COLLECTION item_inserted: is_inserted (v) ensure then -- from SEQUENCE new_count: count = old count + 1 put_front (v: like item) -- Add v at beginning. Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_is_first: v = first count_increased: count = old count + 1 cursor_not_moved: (index = old index + 1) or (before and old before) put_i_th (v: like item; i: INTEGER_32) -- Replace item at i-th position by v. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed valid_index: i > 0 and i <= count v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current item_replaced: v = i_th (i) not_has_old_item: not has (old i_th (i)) old_item_parent_void: (old i_th (i)).parent = Void count_same: count = old count cursor_not_moved: index = old index put_left (v: like item) -- Add v to the left of cursor position. Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible not_before: not before v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_at_index_plus_one: v = i_th (index - 1) count_increased: count = old count + 1 cursor_not_moved: index = old index + 1 put_right (v: like item) -- Add v to right of cursor position. Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed extendible: extendible not_after: not after v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_at_index_plus_one: v = i_th (index + 1) count_increased: count = old count + 1 cursor_not_moved: index = old index remove_help_context -- Remove key press action associated with EV_APPLICATION.help_key. -- (from EV_HELP_CONTEXTABLE) require -- from EV_HELP_CONTEXTABLE not_destroyed: not is_destroyed help_context_not_void: help_context /= Void ensure -- from EV_HELP_CONTEXTABLE no_help_context: help_context = Void remove_tooltip -- Make `tooltip` empty. -- (from EV_TOOLTIPABLE) require -- from EV_TOOLTIPABLE not_destroyed: not is_destroyed ensure -- from EV_TOOLTIPABLE tooltip_removed: tooltip.is_empty replace (v: like item) -- Replace current item by v. -- (from EV_DYNAMIC_LIST) require -- from EV_DYNAMIC_LIST not_destroyed: not is_destroyed writable: writable v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: not same (v) v_not_parent_of_current: not is_parent_recursive (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current item_replaced: v = item not_has_old_item: not has (old item) old_item_parent_void: (old item).parent = Void count_same: count = old count cursor_not_moved: index = old index set_background_color (a_color: like background_color) -- Assign a_color to `background_color`. -- (from EV_COLORIZABLE) require -- from EV_COLORIZABLE not_destroyed: not is_destroyed a_color_not_void: a_color /= Void ensure -- from EV_COLORIZABLE background_color_assigned: background_color.is_equal (a_color) set_data (some_data: like data) -- Assign some_data to `data`. -- (from EV_ANY) require -- from EV_ANY not_destroyed: not is_destroyed ensure -- from EV_ANY data_assigned: data = some_data set_font (a_font: EV_FONT) -- Assign a_font to `font`. -- (from EV_FONTABLE) require -- from EV_FONTABLE not_destroyed: not is_destroyed a_font_not_void: a_font /= Void ensure -- from EV_FONTABLE font_assigned: font.is_equal (a_font) and font /= a_font set_foreground_color (a_color: like foreground_color) -- Assign a_color to `foreground_color`. -- (from EV_COLORIZABLE) require -- from EV_COLORIZABLE not_destroyed: not is_destroyed a_color_not_void: a_color /= Void ensure -- from EV_COLORIZABLE foreground_color_assigned: foreground_color.is_equal (a_color) set_help_context (an_help_context: FUNCTION [EV_HELP_CONTEXT]) -- Assign an_help_context to `help_context`. -- (from EV_HELP_CONTEXTABLE) require -- from EV_HELP_CONTEXTABLE not_destroyed: not is_destroyed an_help_context_not_void: an_help_context /= Void ensure -- from EV_HELP_CONTEXTABLE help_context_assigned: attached help_context as l_help_context and then l_help_context.is_equal (an_help_context) set_identifier_name (a_name: READABLE_STRING_GENERAL) -- Set `identifier_name` to a_name. -- (from EV_IDENTIFIABLE) require -- from EV_IDENTIFIABLE a_name_not_void: a_name /= Void a_name_not_empty: not a_name.is_empty no_period_in_name: not a_name.has ('.'.to_character_32) no_special_regexp_characters_in_name: ensure -- from EV_IDENTIFIABLE identifier_name_set: identifier_name.same_string_general (a_name) set_minimum_height (a_minimum_height: INTEGER_32) -- Set a_minimum_height in pixels to `minimum_height`. -- If `height` is less than a_minimum_height, resize. -- From now, `minimum_height` is fixed and will not be changed -- dynamically by the application anymore. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed a_minimum_height_positive: a_minimum_height >= 0 ensure -- from EV_WIDGET minimum_height_assigned: (a_minimum_height > 0 implies minimum_height = a_minimum_height) or (a_minimum_height = 0 implies (minimum_height <= 1)) minimum_height_set_by_user_set: minimum_height_set_by_user set_minimum_size (a_minimum_width, a_minimum_height: INTEGER_32) -- Assign a_minimum_height to `minimum_height` -- and a_minimum_width to `minimum_width` in pixels. -- If `width` or `height` is less than minimum size, resize. -- From now, minimum size is fixed and will not be changed -- dynamically by the application anymore. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed a_minimum_width_positive: a_minimum_width >= 0 a_minimum_height_positive: a_minimum_height >= 0 ensure -- from EV_WIDGET minimum_width_assigned: (a_minimum_width > 0 implies minimum_width = a_minimum_width) or (a_minimum_width = 0 implies (minimum_width <= 1)) minimum_height_assigned: (a_minimum_height > 0 implies minimum_height = a_minimum_height) or (a_minimum_height = 0 implies (minimum_height <= 1)) minimum_height_set_by_user_set: minimum_height_set_by_user minimum_width_set_by_user_set: minimum_width_set_by_user set_minimum_width (a_minimum_width: INTEGER_32) -- Assign a_minimum_width in pixels to `minimum_width`. -- If `width` is less than a_minimum_width, resize. -- From now, `minimum_width` is fixed and will not be changed -- dynamically by the application anymore. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed a_minimum_width_positive: a_minimum_width >= 0 ensure -- from EV_WIDGET minimum_width_assigned: (a_minimum_width > 0 implies minimum_width = a_minimum_width) or (a_minimum_width = 0 implies (minimum_width <= 1)) minimum_width_set_by_user_set: minimum_width_set_by_user set_pointer_style (a_cursor: EV_POINTER_STYLE) -- Assign a_cursor to `pointer_style`. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed a_cursor_not_void: a_cursor /= Void ensure -- from EV_WIDGET pointer_style_assigned: attached pointer_style as l_pointer_style and then l_pointer_style.is_equal (a_cursor) set_tooltip (a_tooltip: READABLE_STRING_GENERAL) -- Assign a_tooltip to `tooltip`. -- (from EV_TOOLTIPABLE) require -- from EV_TOOLTIPABLE not_destroyed: not is_destroyed tooltip: a_tooltip /= Void ensure -- from EV_TOOLTIPABLE tooltip_assigned: tooltip.same_string_general (a_tooltip) cloned: tooltip /= a_tooltip swap (i: INTEGER_32) -- Exchange_item at i-th position with item -- at cursor position. -- (from EV_DYNAMIC_LIST) require -- from CHAIN not_off: not off valid_index: valid_index (i) ensure -- from CHAIN swapped_to_item: item = old i_th (i) swapped_from_item: i_th (i) = old item feature -- Removal dispose -- Free the entry associated with `object_id` if any -- (from IDENTIFIED) require -- from DISPOSABLE True ensure then -- from IDENTIFIED object_freed: id_freed frozen free_id -- Free the entry associated with `object_id` if any. -- (from IDENTIFIED) ensure -- from IDENTIFIED object_freed: id_freed prune (v: like item) -- Remove v if present. Do not move cursor, except if -- cursor was on v, move to right neighbor. -- (from EV_DYNAMIC_LIST) ensure then -- from EV_DYNAMIC_LIST not_has_v: not has (v) had_item_implies_parent_void: old has (v) implies (v /= Void and then v.parent = Void) had_item_implies_count_decreased: old has (v) implies count = old count - 1 had_item_and_was_after_implies_index_decreased: (old after and old has (v)) implies index = old index - 1 dl_prune (v: like item) -- Remove first occurrence of v, if any, -- after cursor position. -- If found, move cursor to right neighbor; -- if not, make structure `exhausted`. -- (from DYNAMIC_CHAIN) require -- from COLLECTION prunable: prunable prune_all (v: like item) -- Remove all occurrences of v. -- (Reference or object equality, -- based on `object_comparison`.) -- Leave structure `exhausted`. -- (from DYNAMIC_CHAIN) require -- from COLLECTION prunable: prunable ensure -- from COLLECTION no_more_occurrences: not has (v) ensure then -- from DYNAMIC_CHAIN is_exhausted: exhausted remove -- Remove current item. Move cursor to right neighbor. -- (or `after` if no right neighbor). -- (from EV_DYNAMIC_LIST) require -- from ACTIVE prunable: prunable writable: writable ensure then -- from DYNAMIC_LIST after_when_empty: is_empty implies after ensure then -- from EV_DYNAMIC_LIST v_removed: not has (old item) parent_void: (old item).parent = Void count_decreased: count = old count - 1 index_same: index = old index remove_i_th (i: INTEGER_32) -- Remove item at index i. -- Move cursor to next neighbor (or `after` if no next neighbor) if it is at i-th position. -- Do not change cursor otherwise. -- (from DYNAMIC_CHAIN) require -- from DYNAMIC_TABLE prunable: prunable valid_key: valid_index (i) ensure then -- from DYNAMIC_CHAIN new_count: count = old count - 1 same_index_if_below: index <= i implies index = old index new_index_if_above: index > i implies index = old index - 1 same_leading_items: ∀ c: old twin ¦ @ c.target_index < i implies c = i_th (.target_index) same_trailing_items: ∀ c: old twin ¦ .target_index > i implies c = i_th (.target_index - 1) remove_left -- Remove item to left of cursor position. -- Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN left_exists: index > 1 ensure -- from DYNAMIC_CHAIN new_count: count = old count - 1 new_index: index = old index - 1 ensure then -- from EV_DYNAMIC_LIST left_neighbor_removed: not has (old i_th (index - 1)) parent_void: (old i_th (index - 1)).parent = Void index_decreased: index = old index - 1 remove_right -- Remove item to right of cursor position. -- Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN right_exists: index < count ensure -- from DYNAMIC_CHAIN new_count: count = old count - 1 same_index: index = old index ensure then -- from EV_DYNAMIC_LIST right_neighbor_removed: not has (old i_th (index + 1)) parent_void: (old i_th (index + 1)).parent = Void index_same: index = old index wipe_out -- Remove all items. -- (from EV_DYNAMIC_LIST) require -- from COLLECTION prunable: prunable ensure -- from COLLECTION wiped_out: is_empty ensure then -- from DYNAMIC_LIST is_before: before feature -- Conversion linear_representation: LINEAR [EV_HEADER_ITEM] -- Representation as a linear structure -- (from LINEAR) require -- from CONTAINER True feature -- Duplication frozen deep_copy (other: EV_GRID_HEADER) -- 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_GRID_HEADER -- 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_GRID_HEADER) -- 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_GRID_HEADER -- 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_GRID_HEADER -- 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_GRID_HEADER -- 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 refresh_now -- Force an immediate redraw of Current. -- (from EV_WIDGET) require -- from EV_WIDGET not_destroyed: not is_destroyed feature -- Inapplicable dl_append (s: SEQUENCE [EV_HEADER_ITEM]) -- Append a copy of s. -- (from EV_DYNAMIC_LIST) require -- from SEQUENCE argument_not_void: s /= Void ensure -- from SEQUENCE new_count: count >= old count dl_extend (v: like item) -- Add a new occurrence of v. -- (from EV_DYNAMIC_LIST) require -- from COLLECTION extendible: extendible ensure -- from COLLECTION item_inserted: is_inserted (v) dl_put_front (v: like item) -- Add v at beginning. -- Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN extendible: extendible ensure -- from DYNAMIC_CHAIN new_count: count = old count + 1 item_inserted: first = v dl_put_i_th (v: like item; i: INTEGER_32) -- Put v at i-th position. -- (from EV_DYNAMIC_LIST) require -- from TABLE valid_key: valid_index (i) require -- from TABLE valid_key: valid_index (i) ensure -- from TABLE inserted: i_th (i) = v dl_put_left (v: like item) -- Add v to the left of cursor position. -- Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN extendible: extendible not_before: not before ensure -- from DYNAMIC_CHAIN new_count: count = old count + 1 new_index: index = old index + 1 dl_put_right (v: like item) -- Add v to the right of cursor position. -- Do not move cursor. -- (from EV_DYNAMIC_LIST) require -- from DYNAMIC_CHAIN extendible: extendible not_after: not after ensure -- from DYNAMIC_CHAIN new_count: count = old count + 1 same_index: index = old index dl_replace (v: like item) -- Replace current item by v. -- (from EV_DYNAMIC_LIST) require -- from ACTIVE writable: writable replaceable: replaceable ensure -- from ACTIVE item_replaced: item = v feature -- Implementation Changeable_comparison_criterion: BOOLEAN = False -- May `object_comparison` be changed? -- (Answer: no by default. -- (from EV_ITEM_LIST) feature -- Command destroy -- Destroy underlying native toolkit object. -- Render Current unusable. -- (from EV_ANY) ensure -- from EV_ANY is_destroyed: is_destroyed feature -- Contract support is_background_color_void: BOOLEAN -- If `background_color` void? -- (from EV_COLORIZABLE) is_bridge_ok (a_string: STRING_32): BOOLEAN -- If a_string equal implementation's `tooltip`? -- (from EV_TOOLTIPABLE) is_cloned (a_string: STRING_32): BOOLEAN -- If a_string same instance as implementation's `tooltip`? -- (from EV_TOOLTIPABLE) is_foreground_color_void: BOOLEAN -- If `foreground_color` void? -- (from EV_COLORIZABLE) is_in_default_state: BOOLEAN -- Is Current in its default state? -- (from EV_HEADER) require -- from EV_ANY True is_in_default_state_for_tabs: BOOLEAN -- Default state for widgets. -- (from EV_HEADER) is_parent_recursive (a_list_item: EV_HEADER_ITEM): BOOLEAN -- Is a_list_item a parent of Current? -- (from EV_HEADER) require -- from EV_DYNAMIC_LIST a_list_not_void: a_list_item /= Void not_destroyed: not is_destroyed parent_of_source_allows_docking: BOOLEAN -- Does parent of source to be transported -- allow current to be dragged out? (See `real_source`) -- Not all Vision2 containers are currently supported by this -- mechanism, only descendents of EV_DOCKABLE_TARGET -- are supported. -- (from EV_DOCKABLE_SOURCE) same (other: EV_ANY): BOOLEAN -- Is other Current? -- (from EV_DYNAMIC_LIST) source_has_current_recursive (source: EV_DOCKABLE_SOURCE): BOOLEAN -- Does source recursively contain Current? -- As seen by parenting structure. -- (from EV_DOCKABLE_SOURCE) require -- from EV_DOCKABLE_SOURCE not_destroyed: not is_destroyed source_not_void: source /= Void feature -- Event handling conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when a pebble that fits here is picked. -- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES not_void: Result /= Void dock_ended_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed after a dock completes from Current. -- Either to a dockable target or a dockable dialog. -- (from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES) ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES not_void: Result /= Void dock_started_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when a dockable source is dragged. -- (from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES) ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES not_void: Result /= Void dpi_changed_actions: EV_DPI_ACTION_SEQUENCE -- Actions to be performed when size changes. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void drop_actions: EV_PND_ACTION_SEQUENCE -- Actions to be performed when a pebble is dropped here. -- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES not_void: Result /= Void file_drop_actions: EV_LITE_ACTION_SEQUENCE [LIST [STRING_32]] -- Actions to be performed when an OS file drop is performed on Current. -- (from EV_WIDGET_ACTION_SEQUENCES) focus_in_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when keyboard focus is gained. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void focus_out_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when keyboard focus is lost. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void key_press_actions: EV_KEY_ACTION_SEQUENCE -- Actions to be performed when a keyboard key is pressed. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void key_press_string_actions: EV_KEY_STRING_ACTION_SEQUENCE -- Actions to be performed when a keyboard press generates a displayable character. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void key_release_actions: EV_KEY_ACTION_SEQUENCE -- Actions to be performed when a keyboard key is released. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void mouse_wheel_actions: EV_INTEGER_ACTION_SEQUENCE -- Actions to be performed when mouse wheel is rotated. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pick_actions: EV_PND_START_ACTION_SEQUENCE -- Actions to be performed when `pebble` is picked up. -- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES not_void: Result /= Void pick_ended_actions: EV_PND_FINISHED_ACTION_SEQUENCE -- Actions to be performed when a transport from Current ends. -- If transport completed successfully, then event data -- is target. If cancelled, then event data is Void. -- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES) ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES not_void: Result /= Void pointer_button_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE -- Actions to be performed when screen pointer button is pressed. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pointer_button_release_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE -- Actions to be performed when screen pointer button is released. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pointer_double_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE -- Actions to be performed when screen pointer is double clicked. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pointer_enter_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when screen pointer enters widget. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pointer_leave_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when screen pointer leaves widget. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE -- Actions to be performed when screen pointer moves. -- (from EV_WIDGET_ACTION_SEQUENCES) require -- from EV_ABSTRACT_PICK_AND_DROPABLE True ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void resize_actions: EV_GEOMETRY_ACTION_SEQUENCE -- Actions to be performed when size changes. -- (from EV_WIDGET_ACTION_SEQUENCES) ensure -- from EV_WIDGET_ACTION_SEQUENCES not_void: Result /= Void feature -- Iteration do_all (action: PROCEDURE [EV_HEADER_ITEM]) -- Apply action to every item. -- Semantics not guaranteed if action changes the structure; -- in such a case, apply iterator to clone of structure instead. -- (from LINEAR) require -- from TRAVERSABLE action_exists: action /= Void do_if (action: PROCEDURE [EV_HEADER_ITEM]; test: FUNCTION [EV_HEADER_ITEM, BOOLEAN]) -- Apply action to every item that satisfies test. -- Semantics not guaranteed if action or test changes the structure; -- in such a case, apply iterator to clone of structure instead. -- (from LINEAR) require -- from TRAVERSABLE action_exists: action /= Void test_exists: test /= Void for_all (test: FUNCTION [EV_HEADER_ITEM, BOOLEAN]): BOOLEAN -- Is test true for all items? -- Semantics not guaranteed if test changes the structure; -- in such a case, apply iterator to clone of structure instead. -- (from LINEAR) require -- from TRAVERSABLE test_exists: test /= Void ensure then -- from LINEAR empty: is_empty implies Result there_exists (test: FUNCTION [EV_HEADER_ITEM, BOOLEAN]): BOOLEAN -- Is test true for at least one item? -- Semantics not guaranteed if test changes the structure; -- in such a case, apply iterator to clone of structure instead. -- (from LINEAR) require -- from TRAVERSABLE test_exists: test /= 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 -- Status Report is_destroyed: BOOLEAN -- Is Current no longer usable? -- (from EV_ANY) ensure -- from EV_ANY bridge_ok: Result = implementation.is_destroyed invariant grid_parented_implies_header_parented: attached grid as l_grid and then l_grid.parent /= Void implies parent /= Void -- from EV_WIDGET is_displayed_implies_show_requested: is_usable and then is_displayed implies is_show_requested parent_contains_current: is_usable and then attached parent as l_parent implies l_parent.has (Current) -- from EV_PICK_AND_DROPABLE user_interface_modes_mutually_exclusive: mode_is_pick_and_drop.to_integer + mode_is_drag_and_drop.to_integer + mode_is_target_menu.to_integer = 1 -- from EV_ANY is_initialized: is_initialized default_create_called: default_create_called is_coupled: default_create_called implies (implementation.interface = Current or (attached {EV_ENVIRONMENT} Current and then attached implementation.interface)) -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) -- from EV_POSITIONED width_not_negative: is_usable implies width >= 0 height_not_negative: is_usable implies height >= 0 minimum_width_not_negative: is_usable implies minimum_width >= 0 minimum_height_not_negative: is_usable implies minimum_height >= 0 -- from EV_DOCKABLE_SOURCE parent_permits_docking: is_dockable implies parent_of_source_allows_docking -- from EV_COLORIZABLE background_color_not_void: is_usable implies not is_background_color_void foreground_color_not_void: is_usable implies not is_foreground_color_void -- from EV_ITEM_LIST parent_of_items_is_current: is_usable and then not is_empty implies parent_of_items_is_current items_unique: is_usable and not is_empty implies items_unique -- from LIST before_definition: before = (index = 0) after_definition: after = (index = count + 1) -- from CHAIN non_negative_index: index >= 0 index_small_enough: index <= count + 1 off_definition: off = ((index = 0) or (index = count + 1)) isfirst_definition: isfirst = ((not is_empty) and (index = 1)) islast_definition: islast = ((not is_empty) and (index = count)) item_corresponds_to_index: (not off) implies (item = i_th (index)) -- from ACTIVE writable_constraint: writable implies readable empty_constraint: is_empty implies (not readable) and (not writable) -- from READABLE_INDEXABLE consistent_boundaries: Lower <= count or else Lower = count + 1 -- from BILINEAR not_both: not (after and before) before_constraint: before implies off -- from LINEAR after_constraint: after implies off -- from TRAVERSABLE empty_constraint: is_empty implies off -- from FINITE empty_definition: is_empty = (count = 0) -- from EV_ITEM_PIXMAP_SCALER pixmaps_size_positive: pixmaps_height > 0 and pixmaps_width > 0 note 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_GRID_HEADER -- Generated by Eiffel Studio --
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