Merge pull request #309 from rijn/307

fix bug: cascader still can be opened if set to disabled

src/components/cascader/cascader.vue

@@ -129,6 +129,7 @@
                 this.visible = false;
             },
             toggleOpen () {
+                if (this.disabled) return false;
                 if (this.visible) {
                     this.handleClose();
                 } else {

test/routers/cascader.vue

@@ -3,11 +3,21 @@
     <Cascader :data="data" @on-change="handleChange">
         <a href="javascript:void(0)">选择</a>
     </Cascader>
+
+    <Row>
+        <i-col span="4">
+            Disabled <Switch :checked.sync="disabled"></Switch>
+        </i-col>
+        <i-col span="4">
+            <Cascader :data="data" :value.sync="value1" :disabled="disabled"></Cascader>
+        </i-col>
+    </Row>
 </template>
 <script>
     export default {
         data () {
             return {
+                disabled: false,
                 text: '未选择',
                 data: [{
                     value: 'beijing',