--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/view/form/ExpNumberField.js	Mon May 23 16:00:50 2016 +0200
@@ -0,0 +1,46 @@
+/* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU GPL (v>=3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out
+ * the documentation coming with IMIS-Labordaten-Application for details.
+ */
+
+/**
+ * Number field for display and editing of exponential numbers
+ */
+Ext.define('Lada.view.form.ExpNumberField', {
+    extend: 'Ext.form.field.Number',
+    alias: 'widget.expnumberfield',
+
+    baseChars: '0123456789eE',
+
+    hideTrigger: true,
+    keyNavEnabled: false,
+    mouseWheelEnabled: false,
+
+    valueToRaw: function(value) {
+        if (!value || value === '') {
+            return value;
+        }
+
+        // XXX: this will be applied to any input before being sent to
+        // the server! Thus, toExponential(2) would lead to incorrectly
+        // rounded numbers at this point.
+        value = parseFloat(value).toExponential()
+            .toString().replace('.', this.decimalSeparator);
+
+        return value;
+    },
+
+    rawToValue: function(value) {
+        if (!value || value === '') {
+            return value;
+        }
+
+        value = parseFloat(
+            value.toString().replace(this.decimalSeparator, '.'));
+
+        return value;
+    }
+});