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Update model resolution.

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rebornix 2021-11-29 10:40:39 -08:00
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src/vs/workbench/contrib/notebook/browser/notebook.layout.md
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@ -4,6 +4,15 @@ The notebook editor is a virtualized list view rendered in two contexts (mainfra
## Notebook model resolution
The notebook model resolution consists of two main parts
* Resolving the raw data (bytes) of the resource from file service. This part is backed by the `WorkingCopyService` and it will resolve the data and broadcast updates when the resource is updated on file system.
* Requesting the contributed notebook serializer to serialize/deserize the raw bytes for the resource. We will find the best matched notebook serializer (by user's editor type configuration and serializer's selector defintion) and convert the raw bytes from/to `NotebookTextModel`.
`NotebookTextModel` is the only source of truth for the notebook document once the resource is opened in the workspace. The source text of each individual cell in the notebook is backed by a piece tree text buffer. When the notebook is opened in the editor group, we will request the `TextModelResolverModelService` for the monaco `TextModel` reference for each cell. The `TextModel` will use the piece tree text buffer from the cell as the backing store so whenver the `TextModel` gets udpated, the cells in `NotebookTextModel` are always up to date.
Since we are using the `TextModelResolverModelService` for cell's text model resolution, the `TextModel`s will have a mirror in the extension host, just like a normal resource opened in a text editor. Extensions can treat them as normal text documents.
![arch](https://user-images.githubusercontent.com/876920/141845889-abe0384e-0093-4b08-831a-04424a4b8101.png)
## Viewport rendering