src/vs/editor/browser/widget/codeEditorWidget.ts/EditorContextKeysManager/_updateFromFocus
class EditorContextKeysManager:	private _updateFromFocus(): void {
		this._editorFocus.set(this._editor.hasWidgetFocus() && !this._editor.isSimpleWidget);
		this._editorTextFocus.set(this._editor.hasTextFocus() && !this._editor.isSimpleWidget);
		this._textInputFocus.set(this._editor.hasTextFocus());
	}