| <template> | 
|     <view | 
|         class="u-grid" | 
|         ref='u-grid' | 
|         :style="[gridStyle]" | 
|     > | 
|         <slot /> | 
|     </view> | 
| </template> | 
|   | 
| <script> | 
|     import props from './props.js'; | 
|     /** | 
|      * grid 宫格布局 | 
|      * @description 宫格组件一般用于同时展示多个同类项目的场景,可以给宫格的项目设置徽标组件(badge),或者图标等,也可以扩展为左右滑动的轮播形式。 | 
|      * @tutorial https://www.uviewui.com/components/grid.html | 
|      * @property {String | Number}    col            宫格的列数(默认 3 ) | 
|      * @property {Boolean}            border        是否显示宫格的边框(默认 false ) | 
|      * @property {String}            align        宫格对齐方式,表现为数量少的时候,靠左,居中,还是靠右 (默认 'left' ) | 
|      * @property {Object}            customStyle    定义需要用到的外部样式 | 
|      * @event {Function} click 点击宫格触发 | 
|      * @example <u-grid :col="3" @click="click"></u-grid> | 
|      */ | 
|     export default { | 
|         name: 'u-grid', | 
|         mixins: [uni.$u.mpMixin, uni.$u.mixin,props], | 
|         data() { | 
|             return { | 
|                 index: 0, | 
|                 width: 0 | 
|             } | 
|         }, | 
|         watch: { | 
|             // 当父组件需要子组件需要共享的参数发生了变化,手动通知子组件 | 
|             parentData() { | 
|                 if (this.children.length) { | 
|                     this.children.map(child => { | 
|                         // 判断子组件(u-radio)如果有updateParentData方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值) | 
|                         typeof(child.updateParentData) == 'function' && child.updateParentData(); | 
|                     }) | 
|                 } | 
|             }, | 
|         }, | 
|         created() { | 
|             // 如果将children定义在data中,在微信小程序会造成循环引用而报错 | 
|             this.children = [] | 
|         }, | 
|         computed: { | 
|             // 计算父组件的值是否发生变化 | 
|             parentData() { | 
|                 return [this.hoverClass, this.col, this.size, this.border]; | 
|             }, | 
|             // 宫格对齐方式 | 
|             gridStyle() { | 
|                 let style = {}; | 
|                 switch (this.align) { | 
|                     case 'left': | 
|                         style.justifyContent = 'flex-start'; | 
|                         break; | 
|                     case 'center': | 
|                         style.justifyContent = 'center'; | 
|                         break; | 
|                     case 'right': | 
|                         style.justifyContent = 'flex-end'; | 
|                         break; | 
|                     default: | 
|                         style.justifyContent = 'flex-start'; | 
|                 }; | 
|                 return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle)); | 
|             } | 
|         }, | 
|         methods: { | 
|             // 此方法由u-grid-item触发,用于在u-grid发出事件 | 
|             childClick(name) { | 
|                 this.$emit('click', name) | 
|             } | 
|         } | 
|     }; | 
| </script> | 
|   | 
| <style lang="scss" scoped> | 
|     @import "../../libs/css/components.scss"; | 
|      $u-grid-width:100% !default; | 
|     .u-grid { | 
|         /* #ifdef MP */ | 
|         width: $u-grid-width; | 
|         position: relative; | 
|         box-sizing: border-box; | 
|         overflow: hidden; | 
|         display: block; | 
|         /* #endif */ | 
|         justify-content: center; | 
|         @include flex; | 
|         flex-wrap: wrap; | 
|         align-items: center; | 
|     } | 
| </style> |