added new function hideTopAlertViewOfType

MVMCoreUI/Alerts/MVMCoreAlertHandler.h

@@ -101,6 +101,9 @@
 /// Hides the current alert view.
 - (void)hideTopAlertView;
 
+/// Hides a persistent alert based on the type string.
+- (void)hidePersistentTopAlertViewOfType:(nullable NSString *)type;
+
 /// Hides a alert based on the type string.
 - (void)hideTopAlertViewOfType:(nullable NSString *)type;
 

MVMCoreUI/Alerts/MVMCoreAlertHandler.m

@@ -226,6 +226,19 @@
     return hasAlert;
 }
 
+- (void)hidePersistentTopAlertViewOfType:(nullable NSString *)type {
+    if (type) {
+        for (MVMCoreTopAlertOperation *operation in self.topAlertQueue.operations) {
+            
+            // Cancel all persistent operations of this type.
+            if (operation.topAlertObject.persistent && [operation.topAlertObject.type isEqualToString:type]) {
+                operation.reAddAfterCancel = NO;
+                [operation cancel];
+            }
+        }
+    }
+}
+
 - (void)hideTopAlertViewOfType:(nullable NSString *)type {
     if (type) {
         for (MVMCoreTopAlertOperation *operation in self.topAlertQueue.operations) {