From c8c19aa7cde85b90bb16ddeb0abda8e87186f556 Mon Sep 17 00:00:00 2001
From: rebornix <penn.lv@gmail.com>
Date: Wed, 2 Sep 2020 12:13:13 -0700
Subject: [PATCH] reduce context key update.

---
 .../contrib/notebook/browser/viewModel/codeCellViewModel.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/vs/workbench/contrib/notebook/browser/viewModel/codeCellViewModel.ts b/src/vs/workbench/contrib/notebook/browser/viewModel/codeCellViewModel.ts
index 0a7c21cf9be..06563a5b82a 100644
--- a/src/vs/workbench/contrib/notebook/browser/viewModel/codeCellViewModel.ts
+++ b/src/vs/workbench/contrib/notebook/browser/viewModel/codeCellViewModel.ts
@@ -224,8 +224,10 @@ export class CodeCellViewModel extends BaseCellViewModel implements ICellViewMod
 			this.textModel = ref.object.textEditorModel;
 			this._register(ref);
 			this._register(this.textModel.onDidChangeContent(() => {
-				this.editState = CellEditState.Editing;
-				this._onDidChangeState.fire({ contentChanged: true });
+				if (this.editState !== CellEditState.Editing) {
+					this.editState = CellEditState.Editing;
+					this._onDidChangeState.fire({ contentChanged: true });
+				}
 			}));
 		}