Undo / Redo

[brauliodiez]

Cannot be implemented til we don't have global context

We can follow same approach as in Mongo Modeler and reuse undo/redo helpers

More info about MongoModeler, you can take this files from the following path:

https://github.com/Lemoncode/mongo-modeler/tree/vnext/src/common/undo-redo

About how it works:

• Whenever we perform any operation on the shape list, we just call addSnapshot.
• Whenever we want to undo a given action, we can call Undo.
• Same to redo
• And we can check if something can be undone or not by using the flags.

Usage in Mongo Modeler:

https://github.com/Lemoncode/mongo-modeler/blob/vnext/src/core/providers/canvas-schema/canvas-schema.provider.tsx

In order to avoid having to call addSnapshot on very operation, we have implemented another hook: useStateWithInterceptor

https://github.com/Lemoncode/mongo-modeler/blob/vnext/src/core/providers/canvas-schema/canvas-schema.hook.tsx

This allows use to implement something like:

  // TODO: consider moving all these to useReducer (discuss first if needed)
  // #54 created to track this
  // https://github.com/Lemoncode/mongo-modeler/issues/54
  const [canvasSchema, setSchema, setSchemaSkipHistory] =
    useStateWithInterceptor(createDefaultDatabaseSchemaVm(), addSnapshot);

We can have a session to get started with this task