yaze::editor::UndoAction Class Reference

Abstract base for all undoable actions (Command pattern) More...

#include <undo_action.h>

Inherited by yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonObjectsAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::MessageEditAction, yaze::editor::MusicSongEditAction, yaze::editor::OverworldTilePaintAction, and yaze::editor::Tile16EditAction.

Public Member Functions
virtual	~UndoAction ()=default
virtual absl::Status	Undo ()=0
virtual absl::Status	Redo ()=0
virtual std::string	Description () const =0
	Human-readable description (e.g., "Paint 12 tiles on map 5")
virtual size_t	MemoryUsage () const
	Approximate memory footprint for budget enforcement.
virtual bool	CanMergeWith (const UndoAction &) const
virtual void	MergeWith (UndoAction &)

Detailed Description

Abstract base for all undoable actions (Command pattern)

Each concrete action captures enough state to undo and redo itself. Actions may optionally merge with previous actions of the same type (e.g., sequential tile paints become a single undo step).

Definition at line 20 of file undo_action.h.

Constructor & Destructor Documentation

~UndoAction()

virtual yaze::editor::UndoAction::~UndoAction ( )

virtualdefault

Member Function Documentation

Undo()

virtual absl::Status yaze::editor::UndoAction::Undo ( )

pure virtual

Implemented in yaze::editor::DungeonObjectsAction, yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::MessageEditAction, yaze::editor::MusicSongEditAction, yaze::editor::OverworldTilePaintAction, and yaze::editor::Tile16EditAction.

Redo()

virtual absl::Status yaze::editor::UndoAction::Redo ( )

pure virtual

Implemented in yaze::editor::DungeonObjectsAction, yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::MessageEditAction, yaze::editor::MusicSongEditAction, yaze::editor::OverworldTilePaintAction, and yaze::editor::Tile16EditAction.

Description()

virtual std::string yaze::editor::UndoAction::Description ( ) const

pure virtual

Human-readable description (e.g., "Paint 12 tiles on map 5")

Implemented in yaze::editor::DungeonObjectsAction, yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::MessageEditAction, yaze::editor::MusicSongEditAction, yaze::editor::OverworldTilePaintAction, and yaze::editor::Tile16EditAction.

MemoryUsage()

virtual size_t yaze::editor::UndoAction::MemoryUsage ( ) const

inlinevirtual

Approximate memory footprint for budget enforcement.

Reimplemented in yaze::editor::DungeonObjectsAction, yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::MessageEditAction, yaze::editor::MusicSongEditAction, yaze::editor::OverworldTilePaintAction, and yaze::editor::Tile16EditAction.

Definition at line 31 of file undo_action.h.

CanMergeWith()

virtual bool yaze::editor::UndoAction::CanMergeWith ( const UndoAction & ) const

inlinevirtual

Whether this action can merge with the previous action on the stack. Called only when both actions have the same concrete type.

Reimplemented in yaze::editor::DungeonObjectsAction, yaze::editor::DungeonCustomCollisionAction, yaze::editor::DungeonWaterFillAction, yaze::editor::GraphicsPixelEditAction, yaze::editor::Tile16EditAction, and yaze::editor::OverworldTilePaintAction.

Definition at line 35 of file undo_action.h.

MergeWith()

virtual void yaze::editor::UndoAction::MergeWith ( UndoAction & )

inlinevirtual

Absorb the previous action into this one. Precondition: CanMergeWith(prev) returned true.

Reimplemented in yaze::editor::OverworldTilePaintAction.

Definition at line 39 of file undo_action.h.

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The documentation for this class was generated from the following file:

• src/app/editor/core/undo_action.h