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note description: "Abstraction of a list in which you can add/modify/remove paths." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2013-05-30 13:33:11 -0800 (Thu, 30 May 2013) $" revision: "$Revision: 92653 $" class interface EV_ADD_REMOVE_PATH_LIST create make_with_parent (win: like parent_window) -- Create an Add/Remove list. require win_not_void: win /= Void ensure parent_window_set: parent_window = win 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 add_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when Add is pressed then released. -- (from EV_ADD_REMOVE_LIST) 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) background_pixmap: detachable EV_PIXMAP -- Result is pixmap displayed on background of Current. -- It is tessellated and fills whole of Current. -- (from EV_CONTAINER) require -- from EV_PIXMAPABLE not_destroyed: not is_destroyed ensure -- from EV_PIXMAPABLE bridge_ok: (Result = Void and implementation.background_pixmap = Void) or (attached Result and then attached implementation.background_pixmap as l_pixmap and then Result.is_equal (l_pixmap)) 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_WIDGET] -- 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 vbox_is_empty 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_ADD_REMOVE_PATH_LIST] -- 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 vbox_is_empty sequential_has (v: like item): BOOLEAN -- Does structure include an occurrence of v? -- (Reference or object equality, -- based on object_comparison.) -- (from LINEAR) require -- from CONTAINER True ensure -- from CONTAINER not_found_in_empty: Result implies not vbox_is_empty has_recursive (an_item: like item): BOOLEAN -- Does structure include an_item or -- does any structure recursively included by structure, -- include an_item. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed 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) ensure then -- from EV_DYNAMIC_LIST bridge_ok: Result = implementation.index_of (v, i) sequential_index_of (v: like item; i: INTEGER_32): INTEGER_32 -- Index of i-th occurrence of v. -- 0 if none. -- (Reference or object equality, -- based on object_comparison.) -- (from LINEAR) require -- from LINEAR positive_occurrences: i > 0 ensure -- from LINEAR non_negative_result: Result >= 0 is_docking_enabled: BOOLEAN -- May Current be docked to? -- If True, Current will accept docking -- from a compatible EV_DOCKABLE_SOURCE. -- (from EV_DOCKABLE_TARGET) require -- from EV_DOCKABLE_TARGET not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_TARGET bridge_ok: Result = implementation.is_docking_enabled item: EV_WIDGET -- Item at current position. -- (from EV_DYNAMIC_LIST) require -- from ACTIVE readable: readable require -- from TRAVERSABLE not_off: not off require -- from EV_CONTAINER not_destroyed: not is_destroyed readable: readable ensure -- from EV_CONTAINER bridge_ok: Result = implementation.interface_item ensure then -- from EV_DYNAMIC_LIST not_void: Result /= Void bridge_ok: Result.is_equal (implementation.item) item_for_iteration: EV_WIDGET -- Item at current position -- (from LINEAR) require -- from LINEAR not_off: not off last: like item -- Item at last position -- (from CHAIN) require -- from CHAIN not_empty: not vbox_is_empty list: detachable EV_LIST -- (from EV_ADD_REMOVE_LIST) note option: stable modify_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when Apply is pressed then released. -- (from EV_ADD_REMOVE_LIST) new_cursor: INDEXABLE_ITERATION_CURSOR [EV_WIDGET] -- 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 sequential_occurrences (v: like item): INTEGER_32 -- Number of times v appears. -- (Reference or object equality, -- based on object_comparison.) -- (from LINEAR) require -- from BAG True ensure -- from BAG non_negative_occurrences: Result >= 0 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 parent_window: EV_WINDOW -- Parent window in which browsing dialogs will be modal to. path_field: detachable EV_PATH_FIELD note option: stable 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 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 remove_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when Delete is pressed then released. -- (from EV_ADD_REMOVE_LIST) retrieve_item_by_data (some_data: ANY; should_compare_objects: BOOLEAN): detachable EV_WIDGET -- 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 vbox_is_empty index_not_changed: old index = index retrieve_items_by_data (some_data: ANY; should_compare_objects: BOOLEAN): ARRAYED_LIST [EV_WIDGET] -- 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 vbox_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 text_field: detachable EV_TEXT_FIELD -- (from EV_ADD_REMOVE_LIST) note option: stable veto_dock_function: detachable FUNCTION [EV_DOCKABLE_SOURCE, BOOLEAN] -- Function to determine whether current dock is allowed. -- If Result is True, dock will be disallowed. -- (from EV_DOCKABLE_TARGET) require -- from EV_DOCKABLE_TARGET not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_TARGET bridge_ok: Result = implementation.veto_dock_function feature -- Measurement client_height: INTEGER_32 -- Height of the area available to children in pixels. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed ensure -- from EV_CONTAINER bridge_ok: Result = implementation.client_height client_width: INTEGER_32 -- Width of the area available to children in pixels. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed ensure -- from EV_CONTAINER bridge_ok: Result = implementation.client_width vbox_count: INTEGER_32 -- Number of items. -- (from EV_DYNAMIC_LIST) require -- from FINITE True require -- from READABLE_INDEXABLE True require -- from EV_CONTAINER not_destroyed: not is_destroyed 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) 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_ADD_REMOVE_PATH_LIST): 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_ADD_REMOVE_PATH_LIST): 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 vbox_count = other.vbox_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_ADD_REMOVE_PATH_LIST): 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 border_width: INTEGER_32 -- Width of border around container in pixels. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX bridge_ok: Result = implementation.border_width positive: Result >= 0 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 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 vbox_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_homogeneous: BOOLEAN -- Are all items forced to have same dimensions. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX bridge_ok: Result = implementation.is_homogeneous is_inserted (v: EV_WIDGET): 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_item_expanded (an_item: EV_WIDGET): BOOLEAN -- Is an_item expanded to occupy available spare space? -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed has_an_item: has (an_item) ensure -- from EV_BOX bridge_ok: Result = implementation.is_item_expanded (an_item) 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 isfirst: BOOLEAN -- Is cursor at first position? -- (from CHAIN) ensure -- from CHAIN valid_position: Result implies not vbox_is_empty islast: BOOLEAN -- Is cursor at last position? -- (from CHAIN) ensure -- from CHAIN valid_position: Result implies not vbox_is_empty merged_radio_button_groups: detachable ARRAYED_LIST [EV_CONTAINER] -- Result is all other radio button groups -- merged with Current. Void if no other containers -- are merged. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed ensure -- from EV_CONTAINER not_is_empty: Result /= Void implies not Result.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 padding: INTEGER_32 -- Space between children in pixels. -- Was declared in EV_BOX as synonym of padding_width. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX bridge_ok: Result = implementation.padding positive: Result >= 0 padding_width: INTEGER_32 -- Space between children in pixels. -- Was declared in EV_BOX as synonym of padding. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX bridge_ok: Result = implementation.padding positive: Result >= 0 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 require -- from EV_CONTAINER not_destroyed: not is_destroyed 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)) 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 <= vbox_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 <= vbox_count) ensure then -- from CHAIN valid_index_definition: Result = ((i >= 1) and (i <= vbox_count)) writable: BOOLEAN -- Is there a current item that may be modified? -- (from SEQUENCE) require -- from ACTIVE True require -- from EV_CONTAINER not_destroyed: not is_destroyed 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_docking -- Ensure is_docking_enabled is False. -- Current will not accept docking. -- (from EV_DOCKABLE_TARGET) require -- from EV_DOCKABLE_TARGET not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_TARGET not_dockable: not is_docking_enabled 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_homogeneous -- Allow items to have different dimensions. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX not_is_homogeneous: not is_homogeneous disable_item_expand (an_item: EV_WIDGET) -- Do not expand an_item to occupy available spare space. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed has_an_item: has (an_item) ensure -- from EV_BOX not_an_item_expanded: not is_item_expanded (an_item) 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 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_docking -- Ensure is_docking_enabled is True. -- (from EV_DOCKABLE_TARGET) require -- from EV_DOCKABLE_TARGET not_destroyed: not is_destroyed ensure -- from EV_DOCKABLE_TARGET is_dockable: is_docking_enabled 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_homogeneous -- Force all items to have same dimensions. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed ensure -- from EV_BOX is_homogeneous: is_homogeneous enable_item_expand (an_item: EV_WIDGET) -- Expand an_item to occupy available spare space. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed has_an_item: has (an_item) ensure -- from EV_BOX an_item_expanded: is_item_expanded (an_item) 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 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 merge_radio_button_groups (other: EV_CONTAINER) -- Merge Current radio button group with that of other. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed other_not_void: other /= Void 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_border_width (value: INTEGER_32) -- Assign value to border_width. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed positive_value: value >= 0 ensure -- from EV_BOX border_width_assigned: border_width = value 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_padding (value: INTEGER_32) -- Assign value to padding_width. -- Was declared in EV_BOX as synonym of set_padding_width. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed positive_value: value >= 0 ensure -- from EV_BOX padding_assigned: padding = value set_padding_width (value: INTEGER_32) -- Assign value to padding_width. -- Was declared in EV_BOX as synonym of set_padding. -- (from EV_BOX) require -- from EV_BOX not_destroyed: not is_destroyed positive_value: value >= 0 ensure -- from EV_BOX padding_assigned: padding = value 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) set_veto_dock_function (a_function: FUNCTION [EV_DOCKABLE_SOURCE, BOOLEAN]) -- Assign a_function to veto_dock_function. -- (from EV_DOCKABLE_TARGET) require -- from EV_DOCKABLE_TARGET not_destroyed: not is_destroyed a_function_not_void: a_function /= Void ensure -- from EV_DOCKABLE_TARGET veto_function_set: veto_dock_function = a_function 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 unmerge_radio_button_groups (other: EV_CONTAINER) -- Remove other from radio button group of Current. -- If no radio button of other was checked before removal -- then first radio button contained will be checked. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed other_is_merged: attached merged_radio_button_groups as l_merged_r_b_groups and then l_merged_r_b_groups.has (other) ensure -- from EV_CONTAINER other_not_merged: other.merged_radio_button_groups = Void not_contained_in_this_group: attached merged_radio_button_groups as l_merged_r_b_groups implies not l_merged_r_b_groups.has (other) other_first_radio_button_now_selected: not old other.has_selected_radio_button and old other.has_radio_button implies other.first_radio_button_selected original_radio_button_still_selected: old has_selected_radio_button implies has_selected_radio_button other_first_radio_button_now_selected: not old has_selected_radio_button and old other.has_radio_button and (attached old merged_radio_button_groups as l_merged_r_b_groups and then l_merged_r_b_groups.count = 1) and has_radio_button implies first_radio_button_selected other_original_radio_button_still_selected: old other.has_selected_radio_button implies other.has_selected_radio_button 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 vbox_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 > vbox_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 vbox_is_empty implies isfirst ensure then -- from EV_DYNAMIC_LIST empty_implies_after: vbox_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 vbox_count + s.count = vbox_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_CONTAINER not_destroyed: not is_destroyed extendible: extendible v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: v /= Current v_not_parent_of_current: not is_parent_recursive (v) v_containable: may_contain (v) 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_CONTAINER has_v: has (v) ensure -- from EV_DYNAMIC_LIST parent_is_current: v.parent = Current v_is_last: v = last count_increased: vbox_count = old vbox_count + 1 cursor_not_moved: (index = old index) or (after and old after) fill (other: CONTAINER [EV_WIDGET]) -- 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: vbox_count = old vbox_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: vbox_count = old vbox_count + 1 item_inserted: has (v) merge_left (other: EV_ADD_REMOVE_PATH_LIST) -- 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: vbox_count = old vbox_count + old other.vbox_count new_index: index = old index + old other.vbox_count other_is_empty: other.vbox_is_empty merge_right (other: EV_ADD_REMOVE_PATH_LIST) -- 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: vbox_count = old vbox_count + old other.vbox_count same_index: index = old index other_is_empty: other.vbox_is_empty put (v: like item) -- Replace current item by v. -- (Synonym for replace) -- (from CHAIN) require -- from EV_CONTAINER not_destroyed: not is_destroyed writable: writable v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: v /= Current v_not_parent_of_current: not is_parent_recursive (v) v_containable: may_contain (v) require -- from CHAIN writeable: writable replaceable: replaceable ensure -- from EV_CONTAINER has_v: has (v) not_has_old_item: old readable implies (attached old implementation.item as l_item and then not has (l_item)) ensure -- from CHAIN same_count: vbox_count = old vbox_count is_inserted: is_inserted (v) 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: vbox_count = old vbox_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 <= vbox_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: vbox_count = old vbox_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: vbox_count = old vbox_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: vbox_count = old vbox_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_background_pixmap -- Remove image displayed on Current. -- (from EV_PIXMAPABLE) require -- from EV_PIXMAPABLE not_destroyed: not is_destroyed ensure -- from EV_PIXMAPABLE pixmap_removed: background_pixmap = Void replace (v: like item) -- Replace current item by v. -- (from EV_DYNAMIC_LIST) require -- from EV_CONTAINER not_destroyed: not is_destroyed writable: writable v_not_void: v /= Void v_parent_void: v.parent = Void v_not_current: v /= Current v_not_parent_of_current: not is_parent_recursive (v) v_containable: may_contain (v) 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_CONTAINER has_v: has (v) not_has_old_item: old readable implies (attached old implementation.item as l_item and then not has (l_item)) 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: vbox_count = old vbox_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_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_background_pixmap (a_pixmap: EV_PIXMAP) -- Display image of a_pixmap on Current. -- Image of pixmap will be a copy of a_pixmap. -- Image may be scaled in some descendents, i.e EV_TREE_ITEM -- See EV_TREE.set_pixmaps_size. -- (from EV_PIXMAPABLE) require -- from EV_PIXMAPABLE not_destroyed: not is_destroyed pixmap_not_void: a_pixmap /= Void 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) 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) require -- from EV_CONTAINER not_destroyed: not is_destroyed writable: prunable v_not_void: v /= Void v_parent_void: v.parent = Current v_not_current: v /= Current ensure -- from EV_CONTAINER has_v: not has (v) 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 vbox_count = old vbox_count - 1 had_item_and_was_after_implies_index_decreased: (old after and old has (v)) implies index = old index - 1 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: vbox_is_empty implies after ensure then -- from EV_DYNAMIC_LIST v_removed: not has (old item) parent_void: (old item).parent = Void count_decreased: vbox_count = old vbox_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: vbox_count = old vbox_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: across old twin as c all c.target_index < i implies c.item = i_th (c.target_index) end same_trailing_items: across old twin as c all c.target_index > i implies c.item = i_th (c.target_index - 1) end 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: vbox_count = old vbox_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 < vbox_count ensure -- from DYNAMIC_CHAIN new_count: vbox_count = old vbox_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 then -- from DYNAMIC_LIST is_before: before ensure -- from COLLECTION wiped_out: vbox_is_empty chain_wipe_out -- Remove all items. -- (from DYNAMIC_CHAIN) require -- from COLLECTION prunable: prunable ensure -- from COLLECTION wiped_out: vbox_is_empty feature -- Conversion linear_representation: LINEAR [EV_WIDGET] -- Representation as a linear structure -- (from LINEAR) require -- from CONTAINER True feature -- Duplication frozen deep_copy (other: EV_ADD_REMOVE_PATH_LIST) -- 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_ADD_REMOVE_PATH_LIST -- 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_ADD_REMOVE_PATH_LIST) -- 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_ADD_REMOVE_PATH_LIST -- 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_ADD_REMOVE_PATH_LIST -- 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_ADD_REMOVE_PATH_LIST -- 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 eif_current_object_id: INTEGER_32 -- New identifier for Current -- (from IDENTIFIED_ROUTINES) ensure -- from IDENTIFIED_ROUTINES eif_current_object_id: Result > 0 inserted: eif_is_object_id_of_current (Result) eif_id_object (an_id: INTEGER_32): detachable ANY -- Object associated with an_id -- (from IDENTIFIED_ROUTINES) require -- from IDENTIFIED_ROUTINES an_id_non_negative: an_id >= 0 ensure -- from IDENTIFIED_ROUTINES instance_free: class eif_is_object_id_of_current (an_id: INTEGER_32): BOOLEAN -- Is an_id the associated object ID of Current. -- (from IDENTIFIED_ROUTINES) require -- from IDENTIFIED_ROUTINES an_id_non_negative: an_id >= 0 eif_object_id (an_object: ANY): INTEGER_32 -- New identifier for an_object -- (from IDENTIFIED_ROUTINES) ensure -- from IDENTIFIED_ROUTINES instance_free: class eif_object_id_positive: Result > 0 inserted: eif_id_object (Result) = an_object eif_object_id_free (an_id: INTEGER_32) -- Free the entry an_id -- (from IDENTIFIED_ROUTINES) require -- from IDENTIFIED_ROUTINES an_id_non_negative: an_id >= 0 ensure -- from IDENTIFIED_ROUTINES instance_free: class removed: eif_id_object (an_id) = Void propagate_background_color -- Propagate background_color recursively, to all children. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed ensure -- from EV_CONTAINER background_color_propagated: background_color_propagated propagate_foreground_color -- Propagate foreground_color recursively, to all children. -- (from EV_CONTAINER) require -- from EV_CONTAINER not_destroyed: not is_destroyed ensure -- from EV_CONTAINER foreground_color_propagated: foreground_color_propagated 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_WIDGET]) -- Append a copy of s. -- (from EV_DYNAMIC_LIST) require -- from SEQUENCE argument_not_void: s /= Void ensure -- from SEQUENCE new_count: vbox_count >= old vbox_count 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: vbox_count = old vbox_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: vbox_count = old vbox_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: vbox_count = old vbox_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_CONTAINER) cl_extend (v: like item) -- Ensure that structure includes v. -- (from EV_CONTAINER) require -- from COLLECTION extendible: extendible ensure -- from COLLECTION item_inserted: is_inserted (v) cl_prune (v: like item) -- Remove one occurrence of v if any. -- (Reference or object equality, -- based on object_comparison.) -- (from EV_CONTAINER) require -- from COLLECTION prunable: prunable cl_put (v: like item) -- Replace item with v. -- (from EV_CONTAINER) require -- from COLLECTION extendible: extendible ensure -- from COLLECTION item_inserted: is_inserted (v) ensure then -- from SEQUENCE new_count: vbox_count = old vbox_count + 1 feature -- Cleaning reset -- Reset content of Current -- (from EV_ADD_REMOVE_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_foreground_color_void: BOOLEAN -- If foreground_color void? -- (from EV_COLORIZABLE) is_in_default_state: BOOLEAN -- Is Current in its default state. -- (from EV_BOX) require -- from EV_ANY True is_parent_recursive (a_widget: EV_WIDGET): BOOLEAN -- Is a_widget parent, or recursivly, parent of parent. -- (from EV_CONTAINER) require -- from EV_DYNAMIC_LIST a_list_not_void: a_widget /= Void not_destroyed: not is_destroyed require -- from EV_CONTAINER not_destroyed: not is_destroyed may_contain (v: EV_WIDGET): BOOLEAN -- May v be inserted in Current. -- Instances of EV_WINDOW may not be inserted -- in a container even though they are widgets. -- (from EV_CONTAINER) 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 docked_actions: EV_DOCKABLE_SOURCE_ACTION_SEQUENCE -- Actions to be performed when a dockable source completes a transport -- Fired only if source has been moved, after parenting. -- (from EV_DOCKABLE_TARGET_ACTION_SEQUENCES) ensure -- from EV_DOCKABLE_TARGET_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_WIDGET]) -- 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_WIDGET]; test: FUNCTION [EV_WIDGET, 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_WIDGET, 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: vbox_is_empty implies Result there_exists (test: FUNCTION [EV_WIDGET, 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 -- Setting set_display_error_message (p: attached like display_error_message) -- Set display_error_message with p. -- (from EV_ADD_REMOVE_LIST) ensure -- from EV_ADD_REMOVE_LIST display_error_message_set: display_error_message = p set_is_entry_valid (f: attached like is_entry_valid) -- Set is_entry_valid with f. -- (from EV_ADD_REMOVE_LIST) ensure -- from EV_ADD_REMOVE_LIST is_entry_valid_set: is_entry_valid = f feature -- Settings set_browse_for_directory -- Force directory browsing dialog to appear when user -- click on browse_button. set_browse_for_file (filter: READABLE_STRING_GENERAL) -- Force file browsing dialog to appear when user -- click on browse_button. feature -- Status count: INTEGER_32 -- Number of items in list? -- (from EV_ADD_REMOVE_LIST) is_empty: BOOLEAN -- Is list empty? -- (from EV_ADD_REMOVE_LIST) 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 -- from EV_ADD_REMOVE_LIST list_not_void: list /= Void text_field_not_void: text_field /= Void add_actions_not_void: add_actions /= Void remove_actions_not_void: remove_actions /= Void modify_actions_not_void: modify_actions /= Void add_button_not_void: add_button /= Void apply_button_not_void: apply_button /= Void remove_button_not_void: remove_button /= Void -- from EV_CONTAINER client_width_non_negative: is_usable implies client_width >= 0 client_width_within_limit: is_usable implies client_width <= width client_height_non_negative: is_usable implies client_height >= 0 client_height_within_limit: is_usable implies client_height <= height all_radio_buttons_connected: is_usable implies all_radio_buttons_connected parent_of_items_is_current: is_usable implies parent_of_items_is_current items_unique: is_usable implies items_unique -- 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 LIST before_definition: before = (index = 0) after_definition: after = (index = vbox_count + 1) -- from CHAIN non_negative_index: index >= 0 index_small_enough: index <= vbox_count + 1 off_definition: off = ((index = 0) or (index = vbox_count + 1)) isfirst_definition: isfirst = ((not vbox_is_empty) and (index = 1)) islast_definition: islast = ((not vbox_is_empty) and (index = vbox_count)) item_corresponds_to_index: (not off) implies (item = i_th (index)) -- from ACTIVE writable_constraint: writable implies readable empty_constraint: vbox_is_empty implies (not readable) and (not writable) -- from READABLE_INDEXABLE consistent_boundaries: Lower <= vbox_count or else Lower = vbox_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: vbox_is_empty implies off -- from FINITE empty_definition: vbox_is_empty = (vbox_count = 0) note copyright: "Copyright (c) 1984-2013, 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_ADD_REMOVE_PATH_LIST
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