update Menu

update Menu

src/components/menu/menu-item.vue

@@ -1,13 +1,42 @@
 <template>
-
+    <li :class="classes" @click.stop="handleClick"><slot></slot></li>
 </template>
 <script>
+    const prefixCls = 'ivu-menu';
+
     export default {
-        props: {},
-        data () {
-            return {}
+        name: 'MenuItem',
+        props: {
+            key: {
+                type: [String, Number],
+                required: true
+            },
+            disabled: {
+                type: Boolean,
+                default: false
+            }
         },
-        computed: {},
-        methods: {}
+        data () {
+            return {
+                active: false
+            }
+        },
+        computed: {
+            classes () {
+                return [
+                    `${prefixCls}-item`,
+                    {
+                        [`${prefixCls}-item-active`]: this.active,
+                        [`${prefixCls}-item-selected`]: this.active,
+                        [`${prefixCls}-item-disabled`]: this.disabled
+                    }
+                ]
+            }
+        },
+        methods: {
+            handleClick () {
+                this.$dispatch('on-menu-item-select', this.key);
+            }
+        }
     }
 </script>