From 7b957a5c378532b11ebfb66156c3a46898f9231b Mon Sep 17 00:00:00 2001
From: Artur Signell <artur@vaadin.com>
Date: Sat, 15 Oct 2016 22:05:51 +0300
Subject: Allow a resize listener to fire a resize listener (#20338)

Change-Id: I6b045c3a693e88b3cba182ae9ea68cfa98c914b0
---
 client/src/main/java/com/vaadin/client/LayoutManager.java | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'client')

diff --git a/client/src/main/java/com/vaadin/client/LayoutManager.java b/client/src/main/java/com/vaadin/client/LayoutManager.java
index ad0a3f8c38..878ac17901 100644
--- a/client/src/main/java/com/vaadin/client/LayoutManager.java
+++ b/client/src/main/java/com/vaadin/client/LayoutManager.java
@@ -350,9 +350,12 @@ public class LayoutManager {
 
             int firedListeners = 0;
             if (!listenersToFire.isEmpty()) {
+                HashSet<Element> listenersCopy = new HashSet<Element>(
+                        listenersToFire);
+                listenersToFire.clear();
                 firedListeners = listenersToFire.size();
                 Profiler.enter("Layout fire resize events");
-                for (Element element : listenersToFire) {
+                for (Element element : listenersCopy) {
                     Collection<ElementResizeListener> listeners = elementResizeListeners
                             .get(element);
                     if (listeners != null) {
@@ -393,8 +396,6 @@ public class LayoutManager {
                                 "Layout fire resize events - listeners not null");
                     }
                 }
-                listenersToFire.clear();
-
                 Profiler.leave("Layout fire resize events");
             }
 
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