Merge pull request #801 from lcx960324/2.0

new feature: @on-toggle-expand on Tree

examples/routers/tree.vue

@@ -1,5 +1,5 @@
 <template>
-    <Tree :data="baseData" show-checkbox @on-check-change="handleChange" ></Tree>
+    <Tree :data="baseData" show-checkbox @on-check-change="handleChange" @on-toggle-expand="showExpand"></Tree>
 </template>
 <script>
     export default {
@@ -47,6 +47,9 @@
             },
             handleChange () {
                 console.log(1)
+            },
+            showExpand (payload) {
+                console.log(payload)
             }
         },
         mounted () {

src/components/tree/node.vue

@@ -98,6 +98,7 @@
             handleExpand () {
                 if (this.data.disabled) return;
                 this.$set(this.data, 'expand', !this.data.expand);
+                this.dispatch('Tree', 'toggle-expand', this.data);
             },
             handleSelect () {
                 if (this.data.disabled) return;

src/components/tree/tree.vue

@@ -102,7 +102,6 @@
         },
         mounted () {
             this.updateData();
-
             this.$on('selected', ori => {
                 const nodes = findComponentsDownward(this, 'TreeNode');
                 nodes.forEach(node => {
@@ -119,6 +118,9 @@
             this.$on('on-checked', () => {
                 this.$emit('on-check-change', this.getCheckedNodes());
             });
+            this.$on('toggle-expand', (payload) => {
+                this.$emit('on-toggle-expand', payload);
+            });
         },
         watch: {
             data () {