From 2d2f9712b5682086c109170fab1331229bb3a06a Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Fri, 25 Jan 2019 18:48:25 +0100
Subject: [PATCH] update layout on window resize

---
 src/components/views/rooms/RoomList.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/components/views/rooms/RoomList.js b/src/components/views/rooms/RoomList.js
index 0c910f6808..3cbd8b0a4b 100644
--- a/src/components/views/rooms/RoomList.js
+++ b/src/components/views/rooms/RoomList.js
@@ -196,6 +196,7 @@ module.exports = React.createClass({
         this._checkSubListsOverflow();
 
         this.resizer.attach();
+        window.addEventListener("resize", this.onWindowResize);
         this.mounted = true;
     },
 
@@ -241,6 +242,7 @@ module.exports = React.createClass({
     componentWillUnmount: function() {
         this.mounted = false;
 
+        window.removeEventListener("resize", this.onWindowResize);
         dis.unregister(this.dispatcherRef);
         if (MatrixClientPeg.get()) {
             MatrixClientPeg.get().removeListener("Room", this.onRoom);
@@ -270,6 +272,17 @@ module.exports = React.createClass({
         this._delayedRefreshRoomList.cancelPendingCall();
     },
 
+    onWindowResize: function() {
+        if (this.mounted && this._layout && this.resizeContainer &&
+            Array.isArray(this._layoutSections)
+        ) {
+            this._layout.update(
+                this._layoutSections,
+                this.resizeContainer.offsetHeight
+            );
+        }
+    },
+
     onRoom: function(room) {
         this.updateVisibleRooms();
     },