Fixed keep-alive component loss offset #161

Author: tangbc

README.md

@@ -17,9 +17,6 @@
   <a href="http://packagequality.com/#?package=vue-virtual-scroll-list">
     <img alt="Package quality" src="https://npm.packagequality.com/shield/vue-virtual-scroll-list.svg">
   </a>
-  <a href="https://opensource.org/licenses/MIT">
-    <img alt="License" src="https://img.shields.io/npm/l/vue-virtual-scroll-list.svg">
-  </a>
 </p>
 
 ## Table of contents

dist/index.js

@@ -1,5 +1,5 @@
 /*!
- * vue-virtual-scroll-list v2.0.6
+ * vue-virtual-scroll-list v2.0.7
  * open source under the MIT license
  * https://github.com/tangbc/vue-virtual-scroll-list#readme
  */
@@ -594,8 +594,9 @@
         this.$on(EVENT_TYPE.SLOT, this.onSlotResized);
       }
     },
-    beforeDestroy: function beforeDestroy() {
-      this.virtual.destroy();
+    // set back offset when use keep-alive
+    activated: function activated() {
+      this.scrollToOffset(this.virtual.offset);
     },
     mounted: function mounted() {
       // set position
@@ -605,6 +606,9 @@
         this.scrollToOffset(this.offset);
       }
     },
+    beforeDestroy: function beforeDestroy() {
+      this.virtual.destroy();
+    },
     methods: {
       // set current scroll position to a expectant offset
       scrollToOffset: function scrollToOffset(offset) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-virtual-scroll-list",
-  "version": "2.0.6",
+  "version": "2.0.7",
   "description": "A vue component support big amount data list with high scroll performance.",
   "main": "dist/index.js",
   "files": [

src/index.js

@@ -51,8 +51,9 @@ const VirtualList = Vue.component(NAME, {
     }
   },
 
-  beforeDestroy () {
-    this.virtual.destroy()
+  // set back offset when use keep-alive
+  activated () {
+    this.scrollToOffset(this.virtual.offset)
   },
 
   mounted () {
@@ -64,6 +65,10 @@ const VirtualList = Vue.component(NAME, {
     }
   },
 
+  beforeDestroy () {
+    this.virtual.destroy()
+  },
+
   methods: {
     // set current scroll position to a expectant offset
     scrollToOffset (offset) {