From 82efef8e4431415f2618ad5f2e3f967dbafbd079 Mon Sep 17 00:00:00 2001
From: surunzi <surunzi@foxmail.com>
Date: Sat, 19 Aug 2017 12:37:38 +0800
Subject: [PATCH] Dev: Auto scroll only at bottom

---
 src/Console/Logger.es6 | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/Console/Logger.es6 b/src/Console/Logger.es6
index 1e8221b..25a8a31 100644
--- a/src/Console/Logger.es6
+++ b/src/Console/Logger.es6
@@ -203,7 +203,10 @@ export default class Logger extends util.Emitter
     insert(type, args)
     {
         let logs = this._logs,
-            $el = this._$el;
+            $el = this._$el,
+            el = $el.get(0);
+
+        let isAtBottom = (el.scrollTop === el.scrollHeight - el.offsetHeight);
 
         let options = util.isStr(type) ? {type, args} : type;
         util.extend(options, {
@@ -237,7 +240,8 @@ export default class Logger extends util.Emitter
         if (this._filterLog(log) && this._parent.active) $el.append(log.formattedMsg);
 
         this.emit('insert', log);
-        this.scrollToBottom();
+
+        if (isAtBottom) this.scrollToBottom();
 
         return this;
     }
@@ -245,7 +249,7 @@ export default class Logger extends util.Emitter
     {
         let el = this._$el.get(0);
 
-        el.scrollTop = el.scrollHeight;
+        el.scrollTop = el.scrollHeight - el.offsetHeight;
     }
     _filterLogs(logs)
     {