Fix cumulative request

view-mode/function/overlaySCurve.js

@@ -13,13 +13,7 @@ function callback(response) {
 	return_first = response;
 }
 
-function getSCurveData(){
+function messageListener(event) {
-
-  // Send a message to the parent window requesting the URL
-  window.parent.postMessage({ action: 'getUrl' }, '*');
-
-  // Listen for messages from the parent window
-  window.addEventListener('message', function(event) {
 	if (event.data && event.data.action === 'sendUrl') {
 		const parentUrl = event.data.url;
 
@@ -39,6 +33,7 @@ function getSCurveData(){
 				data: JSON.stringify(sCurvePayload),
 				success: function (data) {
 					callback(data)
+					window.removeEventListener('message', messageListener);
 				}
 			});
 			$.ajax({
@@ -61,11 +56,16 @@ function getSCurveData(){
 				data: JSON.stringify(sCurvePayload),
 				success: function (data) {
 					callback(data)
+					window.removeEventListener('message', messageListener);
 				}
 			});
 		}
 	}
-  });
+}
+
+function getSCurveData() {
+	window.parent.postMessage({ action: 'getUrl' }, '*');
+	window.addEventListener('message', messageListener);
 };
 
 function toggleOverlay() {