Automatic generation produced by ISE Eiffel
note description: "Column of an EV_GRID, containing EV_GRID_ITEMs." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2021-10-13 08:08:45 -0800 (Wed, 13 Oct 2021) $" revision: "$Revision: 105871 $" class interface EV_GRID_COLUMN_I create make -- Initialize Current. ensure -- from EV_ANY_I is_initialized: get_state_flag (Is_initialized_flag) feature -- Access background_color: detachable EV_COLOR -- Color displayed as background of Current except where there are items contained that -- have a non-Void `background_color`. If Void, `background_color` of `parent` is displayed. deselect_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when Current is deselected. -- (from EV_GRID_COLUMN_ACTION_SEQUENCES_I) ensure -- from EV_GRID_COLUMN_ACTION_SEQUENCES_I result_not_void: Result /= Void foreground_color: detachable EV_COLOR -- Color displayed for foreground features of Current except where there are items contained that -- have a non-Void `foreground_color`. If Void, `foreground_color` of `parent` is displayed. generating_type: TYPE [detachable EV_GRID_COLUMN_I] -- Type of current object -- (type of which it is a direct instance) -- (from ANY) ensure -- from ANY generating_type_not_void: Result /= Void generator: STRING_8 -- Name of current object's generating class -- (base class of the type of which it is a direct instance) -- (from ANY) ensure -- from ANY generator_not_void: Result /= Void generator_not_empty: not Result.is_empty index_of_first_item: INTEGER_32 -- Return the index of the first non Void item within Current -- or 0 if none. ensure valid_result: Result >= 0 and Result <= count is_displayed: BOOLEAN -- Is Current visible on the screen? -- True when show requested and parent displayed. -- A column that `is_displayed` does not necessarily have to be visible on screen at that particular time. is_locked: BOOLEAN -- Is Current locked so that it no longer scrolls? -- Note that this could be implemented as a function -- "Result := parent_i.locked_columns.item (index) /= Void" but this has not been done -- so for performance reasons. is_show_requested: BOOLEAN -- May Current be displayed when its `parent` is? -- Will return False if `hide` has been called on Current. item (i: INTEGER_32): detachable EV_GRID_ITEM -- Item at i-th row, Void if none. require i_positive: i > 0 i_less_than_count: i <= count is_parented: parent /= Void locked_position: INTEGER_32 -- Locked position of Current from left edge of viewable area of `parent`. -- Result is 0 if not `is_locked`. ensure not_locked_implies_result_zero: not is_locked implies Result = 0 minimum_width: INTEGER_32 -- Minimum width of current column. parent: detachable EV_GRID -- Grid to which current column belongs. pixmap: detachable EV_PIXMAP -- Pixmap display on column header to left of `title`. select_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when Current is selected. -- (from EV_GRID_COLUMN_ACTION_SEQUENCES_I) ensure -- from EV_GRID_COLUMN_ACTION_SEQUENCES_I result_not_void: Result /= Void selected_items: ARRAYED_LIST [EV_GRID_ITEM] -- All items selected in Current. require is_parented: parent /= Void ensure result_not_void: Result /= Void title: STRING_32 -- Title of Current column. Empty if none. require is_parented: parent /= Void ensure title_not_void: Result /= Void virtual_x_position: INTEGER_32 -- Horizontal offset of Current in relation to the -- the virtual area of `parent` grid in pixels. -- Result is 0 if `parent` is Void. ensure parent_void_implies_result_zero: parent = Void implies Result = 0 virtual_x_position_unlocked: INTEGER_32 -- Horizontal offset of unlocked position of Current, in relation to the -- virtual area of `parent` grid in pixels. -- If not `is_locked`, then `virtual_x_position` = virtual_y_position_unlocked. -- If `is_locked` then Result is the "shadow" position where the column would -- be if not locked. ensure parent_void_implies_result_zero: parent = Void implies Result = 0 width: INTEGER_32 -- Result is width of Current. require is_parented: parent /= Void ensure result_non_negative: Result >= 0 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_COLUMN_I): BOOLEAN -- Are Current and other attached to isomorphic object structures? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY shallow_implies_deep: standard_is_equal (other) implies Result same_type: Result implies same_type (other) symmetric: Result implies other.is_deep_equal (Current) is_equal (other: EV_GRID_COLUMN_I): BOOLEAN -- Is other attached to an object considered -- equal to current object? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached to -- field-by-field identical objects of the same type? -- Always uses default object comparison criterion. -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b)) frozen standard_is_equal alias "≜" (other: EV_GRID_COLUMN_I): BOOLEAN -- Is other attached to an object of the same type -- as current object, and field-by-field identical to it? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY same_type: Result implies same_type (other) symmetric: Result implies other.standard_is_equal (Current) feature -- Status report conforms_to (other: ANY): BOOLEAN -- Does type of current object conform to type -- of other (as per Eiffel: The Language, chapter 13)? -- (from ANY) require -- from ANY other_not_void: other /= Void count: INTEGER_32 -- Number of items in current. require is_parented: parent /= Void ensure count_not_negative: count >= 0 index: INTEGER_32 -- Position of Current in `parent`. internal_is_selected: BOOLEAN is_destroyed: BOOLEAN -- Is Current no longer usable? -- (from EV_ANY_I) is_selectable: BOOLEAN -- May the object be selected. is_selected: BOOLEAN -- Is objects state set to selected? locked_column: detachable EV_GRID_LOCKED_COLUMN_I -- Locked column information for Current. -- Void if not locked. same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) feature -- Status setting disable_select -- Deselect Current from `parent_i`. require -- from EV_DESELECTABLE_I is_selectable: is_selectable ensure -- from EV_DESELECTABLE_I deselected: not is_selected enable_select -- Select Current in `parent_i`. require -- from EV_SELECTABLE_I is_selectable: is_selectable ensure -- from EV_SELECTABLE_I selected: is_selected ensure_visible -- Ensure Current is visible in viewable area of `parent`. require parented: parent /= Void shown: is_displayed ensure parent_attached: attached parent as l_par parent_virtual_y_position_unchanged: attached old parent as l_old_parent and then l_old_parent.virtual_y_position = l_par.virtual_y_position to_implement_assertion ("old_is_visible_implies_horizontal_position_not_changed") column_visible: virtual_x_position >= l_par.virtual_x_position and virtual_x_position + width <= l_par.virtual_x_position + (l_par.viewable_width).max (width) hide -- Prevent column from being displayed in `parent`. require is_parented: parent /= Void ensure not_is_displayed: not is_show_requested lock_at_position (a_position: INTEGER_32) -- Ensure `is_locked` is True with the horizontal offset from -- the left edge of the viewable area of `parent` set to a_position. ensure is_locked: is_locked locked_position_set: locked_position = a_position required_width_of_item_span (start_row, end_row: INTEGER_32): INTEGER_32 -- Result is greatest required_width of all items from -- row index start_row, end_row that are not hidden (i.e. `is_show_requested` is True). require parented: attached parent as l_parent valid_rows: start_row >= 1 and end_row <= l_parent.row_count and start_row - 1 <= end_row ensure result_non_negative: Result >= 0 show -- Allow column to be displayed when `parent` is. -- Does not signify that the column will be visible on screen but that it will be visible within its parent. require is_parented: parent /= Void ensure is_displayed: is_show_requested toggle -- Change `is_selected`. -- (from EV_DESELECTABLE_I) require -- from EV_DESELECTABLE_I not_is_destroyed: not is_destroyed can_be_selected: not is_selected implies is_selectable unlock -- Ensure `is_locked` is False. ensure not_is_locked: not is_locked feature -- Element change clear -- Remove all items from Current. require is_parented: parent /= Void redraw -- Force all items within Current to be re-drawn when next idle. require parented: parent /= Void remove_pixmap -- Remove image displayed on Current. ensure pixmap_removed: pixmap = Void set_background_color (a_color: EV_COLOR) -- Set `background_color` with a_color. require is_parented: parent /= Void ensure background_color_set: background_color = a_color set_foreground_color (a_color: EV_COLOR) -- Set `foreground_color` with a_color. require is_parented: parent /= Void ensure foreground_color_set: foreground_color = a_color set_item (i: INTEGER_32; a_item: EV_GRID_ITEM) -- Set item at i-th row to be a_item. -- If a_item is Void, the current item (if any) is removed. require i_positive: i > 0 a_item_not_parented: a_item /= Void implies a_item.parent = Void is_parented: attached parent as l_parent valid_tree_structure_on_insertion: a_item /= Void and then l_parent.is_tree_enabled and then attached l_parent.row (i).parent_row as l_parent_row implies index >= l_parent_row.index_of_first_item item_may_be_added_to_tree_node: a_item /= Void and l_parent.row (i).is_part_of_tree_structure implies l_parent.row (i).is_index_valid_for_item_setting_if_tree_node (index) item_may_be_removed_from_tree_node: a_item = Void and then l_parent.row (i).is_part_of_tree_structure implies l_parent.row (i).is_index_valid_for_item_removal_if_tree_node (index) ensure item_set: item (i) = a_item set_pixmap (a_pixmap: EV_PIXMAP) -- Display image of a_pixmap on Current to left of `title`. require pixmap_not_void: a_pixmap /= Void ensure pixmap_set: pixmap = a_pixmap set_title (a_title: READABLE_STRING_GENERAL) -- a_title_not_void: a_title /= Void. require is_parented: parent /= Void ensure title_set: a_title.same_string (title) set_width (a_width: INTEGER_32) -- Assign a_width to `width`. require width_non_negative: a_width >= 0 a_width_greater_or_equal_minimum: a_width >= minimum_width is_parented: parent /= Void ensure width_set: width = a_width feature -- Duplication copy (other: EV_GRID_COLUMN_I) -- Update current object using fields of object attached -- to other, so as to yield equal objects. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen deep_copy (other: EV_GRID_COLUMN_I) -- Effect equivalent to that of: -- `copy` (other . `deep_twin`) -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY deep_equal: deep_equal (Current, other) frozen deep_twin: EV_GRID_COLUMN_I -- New object structure recursively duplicated from Current. -- (from ANY) ensure -- from ANY deep_twin_not_void: Result /= Void deep_equal: deep_equal (Current, Result) frozen standard_copy (other: EV_GRID_COLUMN_I) -- Copy every field of other onto corresponding field -- of current object. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_standard_equal: standard_is_equal (other) frozen standard_twin: EV_GRID_COLUMN_I -- New object field-by-field identical to other. -- Always uses default copying semantics. -- (from ANY) ensure -- from ANY standard_twin_not_void: Result /= Void equal: standard_equal (Result, Current) frozen twin: EV_GRID_COLUMN_I -- New object equal to Current -- `twin` calls `copy`; to change copying/twinning semantics, redefine `copy`. -- (from ANY) ensure -- from ANY twin_not_void: Result /= Void is_equal: Result ~ Current feature -- Basic operations frozen default: detachable EV_GRID_COLUMN_I -- Default value of object's type -- (from ANY) frozen default_pointer: POINTER -- Default value of type POINTER -- (Avoid the need to write p.`default` for -- some p of type POINTER.) -- (from ANY) ensure -- from ANY instance_free: class default_rescue -- Process exception for routines with no Rescue clause. -- (Default: do nothing.) -- (from ANY) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class feature -- Markers fixme (comment: READABLE_STRING_8) -- Mark code that has to be "fixed" with comment. -- (from REFACTORING_HELPER) require -- from REFACTORING_HELPER comment_not_void: comment /= Void ensure -- from REFACTORING_HELPER instance_free: class to_implement (comment: READABLE_STRING_8) -- Mark code that has to be "implemented" with comment. -- (from REFACTORING_HELPER) require -- from REFACTORING_HELPER comment_not_void: comment /= Void ensure -- from REFACTORING_HELPER instance_free: class to_implement_assertion (comment: READABLE_STRING_8): BOOLEAN -- Mark assertion that has to be "implemented" with comment. -- (from REFACTORING_HELPER) require -- from REFACTORING_HELPER comment_not_void: comment /= Void ensure -- from REFACTORING_HELPER instance_free: class 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 invariant header_item_not_void: is_initialized implies header_item /= Void physical_index_set: parent /= Void implies physical_index >= 0 -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) -- from EV_ANY_I interface_coupled: is_usable implies interface /= Void and then attached_interface.implementation = Current base_make_called: is_usable implies base_make_called note copyright: "Copyright (c) 1984-2021, 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_GRID_COLUMN_I -- Generated by Eiffel Studio --
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