refactoring

docs/BatchcodeCombinationSelection.js

@@ -0,0 +1,30 @@
+class BatchcodeCombinationSelection {
+
+    getSelectBatchcodeCombination({ histograms, onSelect }) {
+        const selectBatchcodeCombination = UIUtils.instantiateTemplate('template-selectBatchcodeCombination');
+        const batchcodesSelect = selectBatchcodeCombination.querySelector('#batchcodesSelect');
+        this.#addBatchcodeCombinationOptions(batchcodesSelect, histograms);
+        batchcodesSelect.addEventListener(
+            'change',
+            event => {
+                const histoDescr = histograms[event.target.value];
+                onSelect(histoDescr);
+            });
+        return selectBatchcodeCombination;
+    }
+
+    #addBatchcodeCombinationOptions(batchcodesSelect, histograms) {
+        this.#getBatchcodeCombinationOptions(histograms).forEach(option => batchcodesSelect.add(option));
+    }
+
+    #getBatchcodeCombinationOptions(histograms) {
+        return histograms.map(this.#getBatchcodeCombinationOption);
+    }
+
+    #getBatchcodeCombinationOption(histoDescr, index) {
+        const option = document.createElement("option");
+        option.text = histoDescr.batchcodes.join(', ');
+        option.value = index;
+        return option;
+    }
+}