Update currency validation with glidemodal (#749)

* Use GlideModal instead of alert

Also tried to optimize repeated code

* Fixed indentation

Author: niamccash

Catalog Client Script/Currency Validation/currency_validation.js

@@ -1,38 +1,40 @@
 function onChange(control, oldValue, newValue, isLoading) {
-  if (isLoading || newValue == '') {
-  return;
-  }
-  var cost = g_form.getValue('variable_name'); //update variable name used for currency
-  cost = cost.trim();
-  // first character should be dollar sign
-  var firstChar = cost.substring(0,1);
-  if (firstChar != '$') {
-  alert ("Please enter cost in $0.00 format");
-  g_form.setValue("daily_rate", oldValue);
-  return;
-  }
+    if (isLoading || newValue == '') {
+        return;
+    }
 
-  // characters after the $ sign should be numerics
-  var costType = isNaN(cost.substring(1));
-  if (costType == true) {
-  alert ("Please enter cost in $0.00 format");
-  g_form.setValue("daily_rate", oldValue);
-  return;
-  }
+    var cost = g_form.getValue('variable_name'); //update variable name used for currency
+    cost = cost.trim();
+    // first character should be dollar sign
+    var firstChar = cost.substring(0, 1);
+    if (firstChar != '$') {
+        validationAlert(oldValue);
+    }
 
-  // entered value should have a decimal point
-  var num = cost.substring(1);
-  if (num.indexOf('.') == -1) {
-  alert ("Please enter cost in $0.00 format");
-  g_form.setValue("daily_rate", oldValue);
-  return;
-  }
+    // characters after the $ sign should be numerics
+    var costType = isNaN(cost.substring(1));
+    if (costType == true) {
+        validationAlert(oldValue);
+    }
 
-  // there must be 2 digits only after the decimal
-  var decNum = num.substring(num.indexOf('.')+1, num.length);
-  if (decNum.length != 2) {
-  alert ("Please enter cost in $0.00 format");
-  g_form.setValue("daily_rate", oldValue);
-  return;
-  }
+    // entered value should have a decimal point
+    var num = cost.substring(1);
+    if (num.indexOf('.') == -1) {
+        validationAlert(oldValue);
+    }
+
+    // there must be 2 digits only after the decimal
+    var decNum = num.substring(num.indexOf('.') + 1, num.length);
+    if (decNum.length != 2) {
+        validationAlert(oldValue);
+    }
+}
+
+function validationAlert(oldValue) {
+    g_form.setValue("variable_name", oldValue);
+    var gm = new GlideModal("glide_warn");
+    gm.setTitle("Currency formatting problem");
+    gm.setPreference("title", "Please enter cost in $0.00 format");
+    gm.render();
+    return;
 }