prepare layout.

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellEditorOptions.ts

@@ -86,7 +86,7 @@ export class CellEditorOptions extends CellPart {
 		this._value = this._computeEditorOptions();
 	}
 
-	prepareRender(): void {
+	prepareLayout(): void {
 		// nothing to read
 	}
 	updateLayoutNow(element: ICellViewModel): void {

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellFocusIndicator.ts

@@ -21,7 +21,7 @@ export class CellFocusIndicator extends CellPart {
 		super();
 	}
 
-	prepareRender(): void {
+	prepareLayout(): void {
 		// nothing to read
 	}
 

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellOutput.ts

@@ -593,7 +593,7 @@ export class CellOutputContainer extends CellPart {
 		});
 	}
 
-	prepareRender() {
+	prepareLayout() {
 		this._outputEntries.forEach(entry => {
 			const index = this.viewCell.outputsViewModels.indexOf(entry.model);
 			if (index >= 0) {

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellPart.ts

@@ -12,14 +12,17 @@ export abstract class CellPart extends Disposable {
 	}
 
 	/**
-	 * Read DOM
+	 * Perform DOM read operations to prepare for the list/cell layout update.
 	 */
-	abstract prepareRender(): void;
+	abstract prepareLayout(): void;
 
 	/**
-	 * Update DOM based on layout info change of cell
+	 * Update DOM per cell layout info change
 	 */
 	abstract updateLayoutNow(element: ICellViewModel): void;
 
+	/**
+	 * Update per cell state change
+	 */
 	abstract updateState(element: ICellViewModel, e: CellViewModelStateChangeEvent): void;
 }

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellToolbars.ts

@@ -69,7 +69,7 @@ export class BetweenCellToolbar extends CellPart {
 		this._betweenCellToolbar.context = context;
 	}
 
-	prepareRender(): void {
+	prepareLayout(): void {
 		// nothing to read
 	}
 

src/vs/workbench/contrib/notebook/browser/view/cellParts/cellWidgets.ts

@@ -93,7 +93,7 @@ export class CellEditorStatusBar extends CellPart {
 		}));
 	}
 
-	prepareRender(): void {
+	prepareLayout(): void {
 		// nothing to read
 	}
 

src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts

@@ -106,8 +106,8 @@ export class CodeCell extends Disposable {
 		}
 
 		this._register(this.viewCell.onLayoutInfoRead(() => {
-			this._outputContainerRenderer.prepareRender();
-			this.cellParts.forEach(cellPart => cellPart.prepareRender());
+			this._outputContainerRenderer.prepareLayout();
+			this.cellParts.forEach(cellPart => cellPart.prepareLayout());
 		}));
 
 		this.updateForCollapseState();