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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| import { ISharedCell, NotebookChange, YCellType } from '@jupyter/ydoc'; | ||
| import { | ||
| CellModel, | ||
| CodeCellModel, | ||
| ICellModel, | ||
| MarkdownCellModel, | ||
| RawCellModel | ||
| } from '@jupyterlab/cells'; | ||
| import { NotebookPanel } from '@jupyterlab/notebook'; | ||
|
|
||
| import { IDict } from './types'; | ||
|
|
||
| /** | ||
| * Generates a mapping of cell IDs to cell models for a given notebook. | ||
| * | ||
| * @param {NotebookPanel | null} nb - The notebook panel from which to | ||
| * extract cell models. | ||
| * @returns {IDict<ICellModel>} - A dictionary mapping cell IDs to their | ||
| * respective cell models. | ||
| */ | ||
| export function getCellMap(nb: NotebookPanel | null): IDict<ICellModel> { | ||
| const cellMap: IDict<ICellModel> = {}; | ||
| [...(nb?.model?.cells ?? [])].forEach(it => { | ||
| cellMap[it.id] = it; | ||
| }); | ||
| return cellMap; | ||
| } | ||
|
|
||
| /** | ||
| * Detects changes to cells in a notebook and classifies the type of change. | ||
| * | ||
| * @param {NotebookChange} changed - The change event to analyze. | ||
| * @returns {Object | undefined} - An object describing the type of event: | ||
| * - If cells were deleted: `{ event: 'deleted' }` | ||
| * - If cells were moved: `{ event: 'moved', movedCells: ISharedCell[] }` | ||
| * - Otherwise, returns `undefined`. | ||
| */ | ||
| export function detectCellChangedEvent(changed: NotebookChange): | ||
| | { | ||
| event: 'deleted' | 'moved'; | ||
| movedCells?: ISharedCell[]; | ||
| } | ||
| | undefined { | ||
| const { cellsChange } = changed; | ||
|
|
||
| if (cellsChange) { | ||
| let haveDelete = false; | ||
| let haveInsert: ISharedCell[] | undefined; | ||
| for (const c of cellsChange) { | ||
| if (c.delete !== undefined) { | ||
| haveDelete = true; | ||
| } | ||
| if (c.insert !== undefined) { | ||
| haveInsert = c.insert; | ||
| } | ||
| } | ||
| if (!haveInsert && haveDelete) { | ||
| return { event: 'deleted' }; | ||
| } | ||
| if (haveInsert && haveDelete) { | ||
| return { event: 'moved', movedCells: haveInsert }; | ||
| } | ||
| } | ||
| return; | ||
| } | ||
|
|
||
| /** | ||
| * Creates a cell model from a YCellType instance based on its cell type. | ||
| * | ||
| * @param {Object} options - The options for creating the cell model. | ||
| * @param {YCellType} options.yCell - The YCellType instance representing | ||
| * the shared cell model. | ||
| * @param {string} options.mimeType - The MIME type to assign to the cell | ||
| * model (used for code cells). | ||
| * @returns {CellModel | undefined} - The created cell model (CodeCellModel, | ||
| * MarkdownCellModel, or RawCellModel) or `undefined` if the cell type | ||
| * is unsupported. | ||
| */ | ||
| export function cellModelFromYCell(options: { | ||
| yCell: YCellType; | ||
| mimeType: string; | ||
| }): CellModel | undefined { | ||
| let copiedCellModel: CellModel | undefined; | ||
| const { yCell, mimeType } = options; | ||
| switch (yCell.cell_type) { | ||
| case 'code': { | ||
| copiedCellModel = new CodeCellModel({ | ||
| sharedModel: yCell | ||
| }); | ||
| copiedCellModel.mimeType = mimeType; | ||
| break; | ||
| } | ||
| case 'markdown': { | ||
| copiedCellModel = new MarkdownCellModel({ | ||
| sharedModel: yCell | ||
| }); | ||
| break; | ||
| } | ||
| case 'raw': { | ||
| copiedCellModel = new RawCellModel({ | ||
| sharedModel: yCell | ||
| }); | ||
| break; | ||
| } | ||
| default: | ||
| break; | ||
| } | ||
| return copiedCellModel; | ||
| } |
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