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note description: "Implementation interface for dockable source." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2015-06-25 15:41:43 -0700 (Thu, 25 Jun 2015) $" revision: "$Revision: 97568 $" deferred class interface EV_DOCKABLE_SOURCE_I feature -- Access generating_type: TYPE [detachable EV_DOCKABLE_SOURCE_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 is_dock_executing: BOOLEAN -- Is Current in the process of a dockable transport? is_dockable: BOOLEAN -- Is Current dockable? 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 the transport? 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. not_external_docking_enabled: BOOLEAN -- Attribute used for is_externally_dockable. We must implement -- is_externally_dockable this way as we have no easy solution to -- assign True to is_externally_dockable. not_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. -- Internal reversed value of is_external_docking_relative as we cannot -- easily initialize a BOOLE to True in this case. original_parent_position: INTEGER_32 -- Original position in parent. Required -- to restore widget later. real_source: detachable EV_DOCKABLE_SOURCE -- Result is EV_DOCKABLE_SOURCE which should be -- dragged when docking begins on Current. 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 (other: EV_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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 (other: EV_DOCKABLE_SOURCE_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 closest_dockable_target: detachable EV_DOCKABLE_TARGET -- Result is first dockable target that is_dockable found by recursively -- searching up through the parenting structure from the widget -- currently underneath the pointer position. -- Result will be Void if a dockable target is not found. ensure result_is_dockable: Result /= Void implies Result.is_docking_enabled 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 get_next_target (a_widget: EV_WIDGET): detachable EV_DOCKABLE_TARGET -- Result is next dockable target that is is_dockable found by -- recursively seraching up the parenting structure from current_target. -- Result will be Void if none. require a_widget_not_void: a_widget /= Void ensure result_is_dockable: Result /= Void implies Result.is_docking_enabled is_destroyed: BOOLEAN -- Is Current no longer usable? -- (from EV_ANY_I) same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) feature -- Status setting disable_dockable -- Ensure Current is not dockable ensure not_is_dockable: not is_dockable disable_external_docking -- Forbid Current to be docked into an EV_DOCKABLE_DIALOG -- When there is no valid EV_DRAGABLE_TARGET upon completion -- of the transport? require is_dockable: is_dockable ensure 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. require external_docking_enabled: is_external_docking_enabled ensure external_docking_not_relative: not is_external_docking_relative enable_dockable -- Allow Current to be dockable ensure is_dockable: is_dockable enable_external_docking -- Allow Current to be docked into an EV_DOCKABLE_DIALOG -- When there is no valid EV_DRAGABLE_TARGET upon completion -- of the transport? require is_dockable: is_dockable ensure 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. require external_docking_enabled: is_external_docking_enabled ensure external_docking_not_relative: is_external_docking_relative internal_disable_dockable -- Platform specific implementation of disable_dockable. internal_enable_dockable -- Platform specific implementation of enable_dockable. remove_real_source -- Ensure real_source is Void. require is_dockable: is_dockable ensure real_source_void: real_source = Void set_real_source (dockable_source: EV_DOCKABLE_SOURCE) -- Set dockable_source to be the widget moved when a -- drag begins on Current. require is_dockable: is_dockable dockable_source_not_void: dockable_source /= Void ensure real_source_assigned: real_source = dockable_source feature -- Duplication copy (other: EV_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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_DOCKABLE_SOURCE_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 close_dockable_dialog (dockable_dialog: EV_DOCKABLE_DIALOG) -- Close request received by dockable_dialog so -- restore widget contained back to its original position -- in its old parent if possible. -- We must fire dock_ended actions. ensure dockable_dialog_destroyed: dockable_dialog.is_destroyed complete_dock -- Complete a dock from source_being_docked. require source_being_docked: source_being_docked /= Void ensure not_dock_executing: not is_dock_executing insert_separator_not_parented: Insert_sep.parent = Void insert_label_not_parented: Insert_label.parent = Void frozen default: detachable EV_DOCKABLE_SOURCE_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 -- Inapplicable Drag_cursor: EV_POINTER_STYLE -- Cursor used when Current is being transported. feature -- Access EV_DRAGABLE_SOURCE. dockable_dialog_target: detachable EV_DOCKABLE_DIALOG -- A dockable dialog that will be created as -- necessary. This is not a local, to avoid it -- being garbage collected. -- (from EV_SHARED_TRANSPORT_I) Global_drag_targets: ARRAYED_LIST [INTEGER_32] -- Shortcut to EV_APPLICATION.pnd_targets. -- (from EV_SHARED_TRANSPORT_I) frozen Insert_label: EV_CELL -- Label used to indicate where Current will be placed in target. -- (from EV_SHARED_TRANSPORT_I) ensure -- from EV_SHARED_TRANSPORT_I result_not_void: Result /= Void Insert_label_imp: EV_CELL_I -- Once access to implementation of Insert_label. -- (from EV_SHARED_TRANSPORT_I) ensure -- from EV_SHARED_TRANSPORT_I Result /= Void Insert_sep: EV_TOOL_BAR_SEPARATOR -- Once access to a separator used to indicate the insertion position -- when moving tool bar items. -- (from EV_SHARED_TRANSPORT_I) Insert_sep_imp: EV_TOOL_BAR_SEPARATOR_I -- Once access to implementation of Insert_sep. -- (from EV_SHARED_TRANSPORT_I) ensure -- from EV_SHARED_TRANSPORT_I Result /= Void Internal_screen: EV_SCREEN -- Once access to an EV_SCREEN. -- (from EV_SHARED_TRANSPORT_I) original_x_offset: INTEGER_16 -- Original x_offset and original_y_offset of transport -- realtive to widget. Only used for dragable transports. -- (from EV_SHARED_TRANSPORT_I) original_y_offset: INTEGER_16 -- Original x_offset and original_y_offset of transport -- realtive to widget. Only used for dragable transports. -- (from EV_SHARED_TRANSPORT_I) originating_source: detachable EV_DOCKABLE_SOURCE_I -- Dragable source that originated the transport of source_being_dragged. -- (from EV_SHARED_TRANSPORT_I) remove_insert_label -- Remove Insert_label from its current parent. -- We must handle a special case for cells. If the parent is a cell, -- then we remove the cell from its parent, and then restore it. -- Otherwise, when the label, removed, the cell keeps it size, and cells -- are normally used with real_target when the cell must -- not be visible. -- (from EV_SHARED_TRANSPORT_I) ensure -- from EV_SHARED_TRANSPORT_I not_parented: Insert_label.parent = Void remove_insert_sep -- Ensure inset_sep is not parented. -- (from EV_SHARED_TRANSPORT_I) ensure -- from EV_SHARED_TRANSPORT_I not_parented: Insert_sep.parent = Void source_being_docked: detachable EV_DOCKABLE_SOURCE_I -- Dragable source currently being transported. May be a -- WIDGET_IMP or an EV_TOOL_BAR_BUTTON_IMP. -- (from EV_SHARED_TRANSPORT_I) feature -- Access EV_PICK_AND_DROPABLE. Default_accept_cursor: EV_POINTER_STYLE -- Used in lieu of a user defined accept_cursor. -- (from EV_SHARED_TRANSPORT_I) Default_deny_cursor: EV_POINTER_STYLE -- Used in lieu of a user defined deny_cursor. -- (from EV_SHARED_TRANSPORT_I) Default_pixmaps: EV_STOCK_PIXMAPS -- Default pixmaps -- (from EV_SHARED_TRANSPORT_I) Global_pnd_targets: HASH_TABLE [INTEGER_32, INTEGER_32] -- Shortcut to EV_APPLICATION.pnd_targets. -- (from EV_SHARED_TRANSPORT_I) rubber_band_is_drawn: BOOLEAN -- Is a rubber band line currently on the screen? -- (from EV_SHARED_TRANSPORT_I) feature -- Access common. pointer_x: INTEGER_16 -- (from EV_SHARED_TRANSPORT_I) pointer_y: INTEGER_16 -- (from EV_SHARED_TRANSPORT_I) feature -- Event handling 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_I) ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I not_void: Result /= Void dock_started_actions: EV_NOTIFY_ACTION_SEQUENCE -- Actions to be performed when pebble is picked up. -- (from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I) ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I not_void: Result /= Void feature -- Output Io: STD_FILES -- Handle to standard file setup -- (from ANY) ensure -- from ANY instance_free: class io_not_void: Result /= Void out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY out_not_void: Result /= Void print (o: detachable ANY) -- Write terse external representation of o -- on standard output. -- (from ANY) ensure -- from ANY instance_free: class frozen tagged_out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY tagged_out_not_void: Result /= Void feature -- Platform Operating_environment: OPERATING_ENVIRONMENT -- Objects available from the operating system -- (from ANY) ensure -- from ANY instance_free: class operating_environment_not_void: Result /= Void invariant widget_or_item_source: not (widget_source_being_docked /= Void and item_source_being_docked /= Void) dock_executing: is_dock_executing implies widget_source_being_docked /= Void or item_source_being_docked /= Void -- from EV_ANY_I interface_coupled: is_usable implies interface /= Void and then attached_interface.implementation = Current base_make_called: is_usable implies base_make_called -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2015, 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_DOCKABLE_SOURCE_I
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