Expand toggle for RBF history view

frontend/src/app/components/rbf-timeline/rbf-timeline.component.ts

@@ -25,7 +25,9 @@ function isTimelineCell(val: RbfTree | TimelineCell): boolean {
 export class RbfTimelineComponent implements OnInit, OnChanges {
   @Input() replacements: RbfTree;
   @Input() txid: string;
+  @Input() rowLimit: number = 5; // If explicitly set to 0, all timelines rows will be displayed by default
   rows: TimelineCell[][] = [];
+  timelineExpanded: boolean = this.rowLimit === 0;
 
   hoverInfo: RbfTree | null = null;
   tooltipPosition = null;
@@ -191,6 +193,10 @@ export class RbfTimelineComponent implements OnInit, OnChanges {
     return rows;
   }
 
+  toggleTimeline(expand: boolean): void {
+    this.timelineExpanded = expand;
+  }
+
   scrollToSelected() {
     const node = document.getElementById('node-' + this.txid);
     if (node) {