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- <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>
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