From 351c3034d3f159d03920613469c7bf46df7b9676 Mon Sep 17 00:00:00 2001
From: Timo Schneller <t.schneller@gmail.com>
Date: Thu, 5 Jan 2023 16:12:05 +0100
Subject: [PATCH] fix: cleanup shownPanels stream when new model supplied,
 closes #55

---
 .../src/lib/stacked-panels.service.ts              | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/projects/stacked-panels/src/lib/stacked-panels.service.ts b/projects/stacked-panels/src/lib/stacked-panels.service.ts
index 5cd32b0..41365e3 100644
--- a/projects/stacked-panels/src/lib/stacked-panels.service.ts
+++ b/projects/stacked-panels/src/lib/stacked-panels.service.ts
@@ -32,7 +32,7 @@ export class StackedPanelsService {
     this._subPanelsMap.clear();
     this._panelDataMap.clear();
     this._panels$.next([rootPanel]);
-    this._showPanel<T, C>(rootPanel);
+    this._showPanel<T, C>(rootPanel, undefined, true);
   }
 
   private _hidePanelById(panelId: string): void {
@@ -73,7 +73,16 @@ export class StackedPanelsService {
     return true;
   }
 
-  private _showPanel<T, C>(panel: Panel<T, C>, context?: C): void {
+  private _showPanel<T, C>(panel: Panel<T, C>, context?: C, cleanupShownPanels: boolean = false): void {
+    this._addSubPanelsAndAddDataToDataMap(panel, context);
+    if (cleanupShownPanels) {
+      this._shownPanels$.next([panel]);
+    } else {
+      this._shownPanels$.next([...this._shownPanels, panel]);
+    }
+  }
+
+  private _addSubPanelsAndAddDataToDataMap<T, C>(panel: Panel<T, C>, context?: C): void {
     if (panel.subPanels && panel.subPanels.length > 0) {
       this._addPanels(panel.id, panel.subPanels);
     }
@@ -95,7 +104,6 @@ export class StackedPanelsService {
       }
       this._panelDataMap.set(panel.id, data);
     }
-    this._shownPanels$.next([...this._shownPanels, panel]);
   }
 
   public getController<T, C>(panelId: string): StackedPanelsController {