add breakpointMargin property to cell metadata

src/vs/vscode.proposed.d.ts

@@ -1591,6 +1591,12 @@ declare module 'vscode' {
 		 */
 		runnable?: boolean;
 
+		/**
+		 * Controls if the cell has a margin to support the breakpoint UI.
+		 * This metadata is ignored for markdown cell.
+		 */
+		breakpointMargin?: boolean;
+
 		/**
 		 * The order in which this cell was executed.
 		 */

src/vs/workbench/contrib/notebook/browser/view/renderers/cellRenderer.ts

@@ -159,6 +159,13 @@ export class CellEditorOptions {
 	get value(): IEditorOptions {
 		return this._value;
 	}
+
+	setGlyphMargin(gm: boolean): void {
+		if (gm !== this._value.glyphMargin) {
+			this._value.glyphMargin = gm;
+			this._onDidChange.fire(this.value);
+		}
+	}
 }
 
 abstract class AbstractCellRenderer {
@@ -989,6 +996,10 @@ export class CodeCellRenderer extends AbstractCellRenderer implements IListRende
 		} else {
 			templateData.timer.clear();
 		}
+
+		if (typeof metadata.breakpointMargin === 'boolean') {
+			this.editorOptions.setGlyphMargin(metadata.breakpointMargin);
+		}
 	}
 
 	private renderExecutionOrder(element: CodeCellViewModel, templateData: CodeCellRenderTemplate): void {

src/vs/workbench/contrib/notebook/common/notebookCommon.ts

@@ -79,6 +79,7 @@ export enum NotebookCellRunState {
 export interface NotebookCellMetadata {
 	editable?: boolean;
 	runnable?: boolean;
+	breakpointMargin?: boolean;
 	executionOrder?: number;
 	statusMessage?: string;
 	runState?: NotebookCellRunState;