<template>
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<view
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class="u-row"
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ref="u-row"
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:style="[rowStyle]"
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@tap="clickHandler"
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>
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<slot />
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</view>
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</template>
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<script>
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// #ifdef APP-NVUE
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const dom = uni.requireNativePlugin('dom')
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// #endif
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import props from './props.js';
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/**
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* Row 栅格系统中的行
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* @description 通过基础的 12 分栏，迅速简便地创建布局
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* @tutorial https://www.uviewui.com/components/layout.html
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* @property {String | Number} gutter 栅格间隔，左右各为此值的一半，单位px (默认 0 )
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* @property {String} justify 水平排列方式(微信小程序暂不支持) 可选值为`start`(或`flex-start`)、`end`(或`flex-end`)、`center`、`around`(或`space-around`)、`between`(或`space-between`) (默认 'start' )
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* @property {String} align 垂直排列方式 (默认 'center' )
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* @property {Object} customStyle 定义需要用到的外部样式
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*
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* @event {Function} click row被点击
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* @example <u-row justify="space-between" customStyle="margin-bottom: 10px"></u-row>
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*/
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export default {
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name: "u-row",
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
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data() {
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return {
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}
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},
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computed: {
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uJustify() {
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if (this.justify == 'end' || this.justify == 'start') return 'flex-' + this.justify
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else if (this.justify == 'around' || this.justify == 'between') return 'space-' + this.justify
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else return this.justify
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},
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uAlignItem() {
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if (this.align == 'top') return 'flex-start'
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if (this.align == 'bottom') return 'flex-end'
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else return this.align
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},
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rowStyle() {
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const style = {
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alignItems: this.uAlignItem,
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justifyContent: this.uJustify
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}
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// 通过给u-row左右两边的负外边距，消除u-col在有gutter时，第一个和最后一个元素的左内边距和右内边距造成的影响
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if(this.gutter) {
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style.marginLeft = uni.$u.addUnit(-Number(this.gutter)/2)
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style.marginRight = uni.$u.addUnit(-Number(this.gutter)/2)
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}
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return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
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}
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},
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methods: {
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clickHandler(e) {
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this.$emit('click')
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},
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async getComponentWidth() {
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// 延时一定时间，以确保节点渲染完成
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await uni.$u.sleep()
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return new Promise(resolve => {
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// uView封装的获取节点的方法，详见文档
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// #ifndef APP-NVUE
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this.$uGetRect('.u-row').then(res => {
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resolve(res.width)
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})
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// #endif
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// #ifdef APP-NVUE
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// nvue的dom模块用于获取节点
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dom.getComponentRect(this.$refs['u-row'], (res) => {
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resolve(res.size.width)
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})
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// #endif
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})
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},
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}
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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.u-row {
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@include flex;
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}
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</style>
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