fix Tree bug

examples/routers/tree.vue

@@ -1,21 +1,24 @@
 <template>
-    <Tree :data="data2" check-directly show-checkbox></Tree>
+    <Tree :data="data4" show-checkbox multiple></Tree>
 </template>
 <script>
     export default {
         data () {
             return {
-                data2: [
+                data4: [
                     {
                         title: 'parent 1',
                         expand: true,
+                        selected: true,
                         children: [
                             {
                                 title: 'parent 1-1',
                                 expand: true,
+                                disabled: true,
                                 children: [
                                     {
-                                        title: 'leaf 1-1-1'
+                                        title: 'leaf 1-1-1',
+                                        disabled: true
                                     },
                                     {
                                         title: 'leaf 1-1-2'
@@ -27,7 +30,8 @@
                                 expand: true,
                                 children: [
                                     {
-                                        title: 'leaf 1-2-1'
+                                        title: 'leaf 1-2-1',
+                                        checked: true
                                     },
                                     {
                                         title: 'leaf 1-2-1'

src/components/tree/node.vue

@@ -175,7 +175,7 @@
         methods: {
             handleExpand () {
                 const item = this.data;
-                if (item.disabled) return;
+                // if (item.disabled) return;
 
                 // Vue.js 2.6.9 对 transition 的 appear 进行了调整，导致 iView 初始化时无动画，加此方法来判断通过点击箭头展开时，加 appear，否则初始渲染时 appear 为 false
                 this.appearByClickArrow = true;

src/styles/components/tree.less

@@ -67,7 +67,7 @@
         //    }
         //}
         &-disabled{
-            cursor: @cursor-disabled;
+            //cursor: @cursor-disabled;
         }
     }