28   private trace: SpSystemTrace;  property in SpClockChart
30   constructor(trace: SpSystemTrace) {
31     this.trace = trace;
46     this.trace.rowsEL?.appendChild(folder);
61       traceRow.favoriteChangeHandler = this.trace.favoriteChangeHandler;
62       traceRow.selectChangeHandler = this.trace.selectChangeHandler;
101         this.trace?.displayTip(
115 …      context = traceRow.collect ? this.trace.canvasFavoritePanelCtx! : this.trace.canvasPanelCtx!;
130         traceRow.canvasRestore(context, this.trace);
147     clockFolder.favoriteChangeHandler = this.trace.favoriteChangeHandler;
148     clockFolder.selectChangeHandler = this.trace.selectChangeHandler;
151       clockFolder.canvasSave(this.trace.canvasPanelCtx!);
153 …     this.trace.canvasPanelCtx?.clearRect(0, 0, clockFolder.frame.width, clockFolder.frame.height);
157             context: this.trace.canvasPanelCtx,
164       clockFolder.canvasRestore(this.trace.canvasPanelCtx!, this.trace);