scroll only on material changes

2017-09-20 12:00:54 -07:00
parent 2e8b9145b7
commit 20fc9ae343
1 changed files with 3 additions and 3 deletions
@@ -2358,8 +2358,9 @@
      },

      // Scroll last message into view on component update e.g. on message received.
-      componentDidUpdate: function() {
-        if (this.messagesScroller) {
+      componentDidUpdate: function(prevProps, prevState) {
+        if (this.messagesScroller &&
+          (prevState.title != this.state.title || prevState.messages.length != this.state.messages.length)) {
          this.messagesScroller.scrollTop = this.messagesScroller.scrollHeight - this.state.scrollPosition;
        }
      },
@@ -2415,7 +2416,6 @@
            topic: props.topic,
            scrollPosition: 0
          });
-
          tryToResubscribe = true;
        }