From 2651ee8017fbafc3738e29ce78df2c81d8449a33 Mon Sep 17 00:00:00 2001
From: frankknoll <Knoll_Frank@web.de>
Date: Sat, 28 Jan 2023 22:51:28 +0100
Subject: [PATCH] refactoring

---
 docs/HistogramView.js | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/docs/HistogramView.js b/docs/HistogramView.js
index d1c0dd54b26..efe47133898 100644
--- a/docs/HistogramView.js
+++ b/docs/HistogramView.js
@@ -7,12 +7,9 @@ class HistogramView {
     }
 
     displayHistogramsForBatchcode(batchcode) {
-        const loadingText = document.createTextNode('Loading...');
-        this.#uiContainer.appendChild(loadingText);
-        fetch(`data/histograms/${batchcode}.json`)
-            .then(response => response.json())
+        this
+            .#loadHistoDescrsForBatchcode(batchcode)
             .then(histoDescrs => {
-                loadingText.remove();
                 for (const histoDescr of histoDescrs.histograms) {
                     const canvas = document.createElement("canvas");
                     this.#uiContainer.appendChild(canvas);
@@ -21,6 +18,16 @@ class HistogramView {
             });
     }
 
+    #loadHistoDescrsForBatchcode(batchcode) {
+        const loadingText = document.createTextNode('Loading...');
+        this.#uiContainer.appendChild(loadingText);
+        return fetch(`data/histograms/${batchcode}.json`)
+            .then(response => {
+                loadingText.remove();
+                return response.json();
+            })
+    }
+
     #displayHistogram(histoDescr, canvas) {
         // FK-TODO: brauchen Slider wie bei intensivstationen
         new Chart(