Substate is a crash consistent undo framework for editor applications.
Undo/Redo command is an inevitable feature of an editing application.
Application developers tend to implement this functionality using the Command design pattern, typically creating a basic command class and then deriving a subclass for each type of user operation, and implementing undo and redo virtual functions for those subclasses.
Such workflow is not only time-consuming, but also tightly tied to the specific application features, which is too inflexiable to handle the ever-changing developing requirements.
We propose a flexible and efficient undo framework which not only allows developers to implement undo/redo features in less time, but also strictly ensures the crash consistency of the application by applying WAL strategy.
- Universality
- Crash Consistency
- Delayed Deletion
| Component | Requirement | Detailed |
|---|---|---|
| Compiler | >=C++17 | / |
| CMake | >=3.19 | >=3.20 is recommended |
cmake -B build -G Ninja
cmake --build build --target all
cmake --build build --target installSubstate Library is licenced under the Apache 2.0 License.